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-rw-r--r--fs/Kconfig35
-rw-r--r--fs/Makefile1
-rw-r--r--fs/affs/inode.c3
-rw-r--r--fs/autofs/inode.c2
-rw-r--r--fs/autofs4/autofs_i.h2
-rw-r--r--fs/autofs4/dev-ioctl.c75
-rw-r--r--fs/autofs4/expire.c4
-rw-r--r--fs/autofs4/inode.c18
-rw-r--r--fs/autofs4/waitq.c8
-rw-r--r--fs/bfs/inode.c45
-rw-r--r--fs/binfmt_elf.c12
-rw-r--r--fs/binfmt_misc.c5
-rw-r--r--fs/bio.c36
-rw-r--r--fs/block_dev.c16
-rw-r--r--fs/buffer.c1
-rw-r--r--fs/char_dev.c2
-rw-r--r--fs/cifs/inode.c2
-rw-r--r--fs/coda/file.c12
-rw-r--r--fs/coda/sysctl.c5
-rw-r--r--fs/compat.c6
-rw-r--r--fs/configfs/inode.c3
-rw-r--r--fs/cramfs/inode.c2
-rw-r--r--fs/dcache.c14
-rw-r--r--fs/debugfs/file.c32
-rw-r--r--fs/debugfs/inode.c3
-rw-r--r--fs/devpts/inode.c4
-rw-r--r--fs/direct-io.c13
-rw-r--r--fs/dlm/ast.c56
-rw-r--r--fs/dlm/ast.h4
-rw-r--r--fs/dlm/debug_fs.c310
-rw-r--r--fs/dlm/dir.c18
-rw-r--r--fs/dlm/dlm_internal.h4
-rw-r--r--fs/dlm/lock.c31
-rw-r--r--fs/dlm/lowcomms.c8
-rw-r--r--fs/dlm/memory.c6
-rw-r--r--fs/dlm/midcomms.c2
-rw-r--r--fs/dlm/netlink.c1
-rw-r--r--fs/dlm/user.c4
-rw-r--r--fs/dlm/user.h2
-rw-r--r--fs/dquot.c438
-rw-r--r--fs/ecryptfs/crypto.c514
-rw-r--r--fs/ecryptfs/ecryptfs_kernel.h105
-rw-r--r--fs/ecryptfs/file.c45
-rw-r--r--fs/ecryptfs/inode.c300
-rw-r--r--fs/ecryptfs/keystore.c651
-rw-r--r--fs/ecryptfs/main.c126
-rw-r--r--fs/ecryptfs/messaging.c4
-rw-r--r--fs/ecryptfs/miscdev.c18
-rw-r--r--fs/exec.c34
-rw-r--r--fs/ext2/ialloc.c8
-rw-r--r--fs/ext2/inode.c2
-rw-r--r--fs/ext2/ioctl.c3
-rw-r--r--fs/ext2/super.c10
-rw-r--r--fs/ext3/ialloc.c8
-rw-r--r--fs/ext3/ioctl.c3
-rw-r--r--fs/ext3/namei.c4
-rw-r--r--fs/ext3/super.c26
-rw-r--r--fs/ext4/ext4.h6
-rw-r--r--fs/ext4/extents.c2
-rw-r--r--fs/ext4/inode.c2
-rw-r--r--fs/ext4/namei.c4
-rw-r--r--fs/ext4/super.c15
-rw-r--r--fs/filesystems.c23
-rw-r--r--fs/fs-writeback.c92
-rw-r--r--fs/fuse/control.c6
-rw-r--r--fs/fuse/dev.c113
-rw-r--r--fs/fuse/dir.c48
-rw-r--r--fs/fuse/file.c457
-rw-r--r--fs/fuse/fuse_i.h83
-rw-r--r--fs/fuse/inode.c157
-rw-r--r--fs/gfs2/Kconfig2
-rw-r--r--fs/gfs2/Makefile2
-rw-r--r--fs/gfs2/acl.c2
-rw-r--r--fs/gfs2/bmap.c77
-rw-r--r--fs/gfs2/bmap.h34
-rw-r--r--fs/gfs2/daemon.c136
-rw-r--r--fs/gfs2/daemon.h17
-rw-r--r--fs/gfs2/dir.c62
-rw-r--r--fs/gfs2/dir.h1
-rw-r--r--fs/gfs2/eattr.c40
-rw-r--r--fs/gfs2/glock.c303
-rw-r--r--fs/gfs2/glock.h2
-rw-r--r--fs/gfs2/glops.c56
-rw-r--r--fs/gfs2/incore.h55
-rw-r--r--fs/gfs2/inode.c53
-rw-r--r--fs/gfs2/inode.h13
-rw-r--r--fs/gfs2/locking/dlm/mount.c12
-rw-r--r--fs/gfs2/locking/dlm/sysfs.c16
-rw-r--r--fs/gfs2/main.c15
-rw-r--r--fs/gfs2/mount.c29
-rw-r--r--fs/gfs2/ops_address.c33
-rw-r--r--fs/gfs2/ops_dentry.c2
-rw-r--r--fs/gfs2/ops_dentry.h17
-rw-r--r--fs/gfs2/ops_export.c5
-rw-r--r--fs/gfs2/ops_file.c24
-rw-r--r--fs/gfs2/ops_fstype.c125
-rw-r--r--fs/gfs2/ops_fstype.h19
-rw-r--r--fs/gfs2/ops_inode.c75
-rw-r--r--fs/gfs2/ops_inode.h25
-rw-r--r--fs/gfs2/ops_super.c149
-rw-r--r--fs/gfs2/ops_super.h17
-rw-r--r--fs/gfs2/quota.c113
-rw-r--r--fs/gfs2/quota.h24
-rw-r--r--fs/gfs2/recovery.c48
-rw-r--r--fs/gfs2/recovery.h14
-rw-r--r--fs/gfs2/rgrp.c58
-rw-r--r--fs/gfs2/super.c246
-rw-r--r--fs/gfs2/super.h13
-rw-r--r--fs/gfs2/sys.c66
-rw-r--r--fs/gfs2/sys.h4
-rw-r--r--fs/gfs2/util.c1
-rw-r--r--fs/gfs2/util.h1
-rw-r--r--fs/hugetlbfs/inode.c13
-rw-r--r--fs/inode.c34
-rw-r--r--fs/ioctl.c44
-rw-r--r--fs/isofs/inode.c6
-rw-r--r--fs/jbd/commit.c15
-rw-r--r--fs/jbd/transaction.c39
-rw-r--r--fs/jbd2/commit.c9
-rw-r--r--fs/jbd2/journal.c19
-rw-r--r--fs/jbd2/transaction.c47
-rw-r--r--fs/jfs/jfs_imap.c10
-rw-r--r--fs/libfs.c5
-rw-r--r--fs/lockd/clntproc.c7
-rw-r--r--fs/lockd/host.c170
-rw-r--r--fs/lockd/mon.c569
-rw-r--r--fs/lockd/svc.c72
-rw-r--r--fs/lockd/svc4proc.c13
-rw-r--r--fs/lockd/svcproc.c13
-rw-r--r--fs/lockd/svcsubs.c1
-rw-r--r--fs/lockd/xdr.c5
-rw-r--r--fs/lockd/xdr4.c5
-rw-r--r--fs/minix/dir.c2
-rw-r--r--fs/mpage.c6
-rw-r--r--fs/namei.c32
-rw-r--r--fs/ncpfs/getopt.c1
-rw-r--r--fs/ncpfs/ioctl.c2
-rw-r--r--fs/nfsd/auth.c4
-rw-r--r--fs/nfsd/nfs4callback.c3
-rw-r--r--fs/nfsd/nfs4proc.c5
-rw-r--r--fs/nfsd/nfs4recover.c2
-rw-r--r--fs/nfsd/nfs4state.c79
-rw-r--r--fs/nfsd/nfs4xdr.c2
-rw-r--r--fs/nfsd/nfsctl.c479
-rw-r--r--fs/nfsd/nfsfh.c36
-rw-r--r--fs/nfsd/nfsproc.c1
-rw-r--r--fs/nfsd/vfs.c9
-rw-r--r--fs/notify/inotify/inotify_user.c2
-rw-r--r--fs/ntfs/inode.c3
-rw-r--r--fs/ocfs2/Makefile7
-rw-r--r--fs/ocfs2/acl.c479
-rw-r--r--fs/ocfs2/acl.h58
-rw-r--r--fs/ocfs2/alloc.c712
-rw-r--r--fs/ocfs2/alloc.h30
-rw-r--r--fs/ocfs2/aops.c59
-rw-r--r--fs/ocfs2/blockcheck.c477
-rw-r--r--fs/ocfs2/blockcheck.h82
-rw-r--r--fs/ocfs2/buffer_head_io.c32
-rw-r--r--fs/ocfs2/buffer_head_io.h27
-rw-r--r--fs/ocfs2/cluster/heartbeat.c2
-rw-r--r--fs/ocfs2/cluster/masklog.c1
-rw-r--r--fs/ocfs2/cluster/masklog.h1
-rw-r--r--fs/ocfs2/dir.c399
-rw-r--r--fs/ocfs2/dir.h2
-rw-r--r--fs/ocfs2/dlm/dlmast.c52
-rw-r--r--fs/ocfs2/dlm/dlmcommon.h3
-rw-r--r--fs/ocfs2/dlm/dlmdebug.c53
-rw-r--r--fs/ocfs2/dlm/dlmdomain.c1
-rw-r--r--fs/ocfs2/dlm/dlmfs.c2
-rw-r--r--fs/ocfs2/dlm/dlmmaster.c42
-rw-r--r--fs/ocfs2/dlm/dlmthread.c3
-rw-r--r--fs/ocfs2/dlmglue.c172
-rw-r--r--fs/ocfs2/dlmglue.h19
-rw-r--r--fs/ocfs2/extent_map.c96
-rw-r--r--fs/ocfs2/extent_map.h24
-rw-r--r--fs/ocfs2/file.c211
-rw-r--r--fs/ocfs2/file.h3
-rw-r--r--fs/ocfs2/inode.c175
-rw-r--r--fs/ocfs2/inode.h18
-rw-r--r--fs/ocfs2/journal.c364
-rw-r--r--fs/ocfs2/journal.h128
-rw-r--r--fs/ocfs2/localalloc.c26
-rw-r--r--fs/ocfs2/namei.c318
-rw-r--r--fs/ocfs2/ocfs2.h46
-rw-r--r--fs/ocfs2/ocfs2_fs.h213
-rw-r--r--fs/ocfs2/ocfs2_jbd_compat.h82
-rw-r--r--fs/ocfs2/ocfs2_lockid.h5
-rw-r--r--fs/ocfs2/quota.h119
-rw-r--r--fs/ocfs2/quota_global.c1025
-rw-r--r--fs/ocfs2/quota_local.c1253
-rw-r--r--fs/ocfs2/resize.c76
-rw-r--r--fs/ocfs2/slot_map.c4
-rw-r--r--fs/ocfs2/suballoc.c363
-rw-r--r--fs/ocfs2/suballoc.h18
-rw-r--r--fs/ocfs2/super.c328
-rw-r--r--fs/ocfs2/symlink.c2
-rw-r--r--fs/ocfs2/xattr.c2984
-rw-r--r--fs/ocfs2/xattr.h45
-rw-r--r--fs/omfs/inode.c1
-rw-r--r--fs/open.c2
-rw-r--r--fs/openpromfs/inode.c3
-rw-r--r--fs/partitions/check.c11
-rw-r--r--fs/proc/base.c235
-rw-r--r--fs/proc/generic.c8
-rw-r--r--fs/proc/inode.c3
-rw-r--r--fs/proc/proc_net.c2
-rw-r--r--fs/proc/proc_sysctl.c1
-rw-r--r--fs/proc/root.c8
-rw-r--r--fs/proc/task_mmu.c8
-rw-r--r--fs/proc/task_nommu.c2
-rw-r--r--fs/proc/vmcore.c2
-rw-r--r--fs/quota.c11
-rw-r--r--fs/quota_tree.c645
-rw-r--r--fs/quota_tree.h25
-rw-r--r--fs/quota_v1.c28
-rw-r--r--fs/quota_v2.c631
-rw-r--r--fs/quotaio_v1.h33
-rw-r--r--fs/quotaio_v2.h60
-rw-r--r--fs/ramfs/inode.c1
-rw-r--r--fs/read_write.c13
-rw-r--r--fs/reiserfs/inode.c13
-rw-r--r--fs/reiserfs/super.c10
-rw-r--r--fs/romfs/inode.c13
-rw-r--r--fs/select.c76
-rw-r--r--fs/splice.c1
-rw-r--r--fs/stat.c2
-rw-r--r--fs/super.c10
-rw-r--r--fs/sync.c50
-rw-r--r--fs/sysfs/inode.c3
-rw-r--r--fs/ubifs/Kconfig2
-rw-r--r--fs/ubifs/budget.c4
-rw-r--r--fs/ubifs/gc.c2
-rw-r--r--fs/ubifs/journal.c2
-rw-r--r--fs/ubifs/shrinker.c2
-rw-r--r--fs/ubifs/super.c9
-rw-r--r--fs/xattr.c2
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c2
237 files changed, 14750 insertions, 5711 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index ff0e8198020..32883589ee5 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -189,6 +189,8 @@ config OCFS2_FS
select CONFIGFS_FS
select JBD2
select CRC32
+ select QUOTA
+ select QUOTA_TREE
help
OCFS2 is a general purpose extent based shared disk cluster file
system with many similarities to ext3. It supports 64 bit inode
@@ -258,15 +260,14 @@ config OCFS2_DEBUG_FS
this option for debugging only as it is likely to decrease
performance of the filesystem.
-config OCFS2_COMPAT_JBD
- bool "Use JBD for compatibility"
+config OCFS2_FS_POSIX_ACL
+ bool "OCFS2 POSIX Access Control Lists"
depends on OCFS2_FS
+ select FS_POSIX_ACL
default n
- select JBD
help
- The ocfs2 filesystem now uses JBD2 for its journalling. JBD2
- is backwards compatible with JBD. It is safe to say N here.
- However, if you really want to use the original JBD, say Y here.
+ Posix Access Control Lists (ACLs) support permissions for users and
+ groups beyond the owner/group/world scheme.
endif # BLOCK
@@ -303,6 +304,10 @@ config PRINT_QUOTA_WARNING
Note that this behavior is currently deprecated and may go away in
future. Please use notification via netlink socket instead.
+# Generic support for tree structured quota files. Seleted when needed.
+config QUOTA_TREE
+ tristate
+
config QFMT_V1
tristate "Old quota format support"
depends on QUOTA
@@ -314,6 +319,7 @@ config QFMT_V1
config QFMT_V2
tristate "Quota format v2 support"
depends on QUOTA
+ select QUOTA_TREE
help
This quota format allows using quotas with 32-bit UIDs/GIDs. If you
need this functionality say Y here.
@@ -715,7 +721,20 @@ config CONFIGFS_FS
endmenu
-menu "Miscellaneous filesystems"
+menuconfig MISC_FILESYSTEMS
+ bool "Miscellaneous filesystems"
+ default y
+ ---help---
+ Say Y here to get to see options for various miscellaneous
+ filesystems, such as filesystems that came from other
+ operating systems.
+
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and
+ disabled; if unsure, say Y here.
+
+if MISC_FILESYSTEMS
config ADFS_FS
tristate "ADFS file system support (EXPERIMENTAL)"
@@ -1085,7 +1104,7 @@ config UFS_DEBUG
Y here. This will result in _many_ additional debugging messages to be
written to the system log.
-endmenu
+endif # MISC_FILESYSTEMS
menuconfig NETWORK_FILESYSTEMS
bool "Network File Systems"
diff --git a/fs/Makefile b/fs/Makefile
index e6f423d1d22..c830611550d 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -54,6 +54,7 @@ obj-$(CONFIG_GENERIC_ACL) += generic_acl.o
obj-$(CONFIG_QUOTA) += dquot.o
obj-$(CONFIG_QFMT_V1) += quota_v1.o
obj-$(CONFIG_QFMT_V2) += quota_v2.o
+obj-$(CONFIG_QUOTA_TREE) += quota_tree.o
obj-$(CONFIG_QUOTACTL) += quota.o
obj-$(CONFIG_PROC_FS) += proc/
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index 415d9c67ac1..3c4ec7d864c 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -119,8 +119,7 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
#else
inode->i_mode |= S_IFDIR;
- inode->i_op = NULL;
- inode->i_fop = NULL;
+ /* ... and leave ->i_op and ->i_fop pointing to empty */
break;
#endif
case ST_LINKFILE:
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index c773680d5c6..e1734f2d6e2 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -251,13 +251,11 @@ struct inode *autofs_iget(struct super_block *sb, unsigned long ino)
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
inode->i_nlink = 2;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
- inode->i_blocks = 0;
if (ino == AUTOFS_ROOT_INO) {
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
inode->i_op = &autofs_root_inode_operations;
inode->i_fop = &autofs_root_operations;
- inode->i_uid = inode->i_gid = 0; /* Changed in read_super */
goto done;
}
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index e0f16da00e5..a76803108d0 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -25,8 +25,6 @@
#define AUTOFS_DEV_IOCTL_IOC_FIRST (AUTOFS_DEV_IOCTL_VERSION)
#define AUTOFS_DEV_IOCTL_IOC_COUNT (AUTOFS_IOC_COUNT - 11)
-#define AUTOFS_TYPE_TRIGGER (AUTOFS_TYPE_DIRECT|AUTOFS_TYPE_OFFSET)
-
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/time.h>
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 63b7c7afe8d..025e105bffe 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -124,7 +124,7 @@ static inline void free_dev_ioctl(struct autofs_dev_ioctl *param)
/*
* Check sanity of parameter control fields and if a path is present
- * check that it has a "/" and is terminated.
+ * check that it is terminated and contains at least one "/".
*/
static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
{
@@ -138,15 +138,16 @@ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
}
if (param->size > sizeof(*param)) {
- err = check_name(param->path);
+ err = invalid_str(param->path,
+ (void *) ((size_t) param + param->size));
if (err) {
- AUTOFS_WARN("invalid path supplied for cmd(0x%08x)",
- cmd);
+ AUTOFS_WARN(
+ "path string terminator missing for cmd(0x%08x)",
+ cmd);
goto out;
}
- err = invalid_str(param->path,
- (void *) ((size_t) param + param->size));
+ err = check_name(param->path);
if (err) {
AUTOFS_WARN("invalid path supplied for cmd(0x%08x)",
cmd);
@@ -180,7 +181,7 @@ static int autofs_dev_ioctl_protover(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
- param->arg1 = sbi->version;
+ param->protover.version = sbi->version;
return 0;
}
@@ -189,7 +190,7 @@ static int autofs_dev_ioctl_protosubver(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
- param->arg1 = sbi->sub_version;
+ param->protosubver.sub_version = sbi->sub_version;
return 0;
}
@@ -335,13 +336,13 @@ static int autofs_dev_ioctl_openmount(struct file *fp,
int err, fd;
/* param->path has already been checked */
- if (!param->arg1)
+ if (!param->openmount.devid)
return -EINVAL;
param->ioctlfd = -1;
path = param->path;
- devid = param->arg1;
+ devid = param->openmount.devid;
err = 0;
fd = autofs_dev_ioctl_open_mountpoint(path, devid);
@@ -373,7 +374,7 @@ static int autofs_dev_ioctl_ready(struct file *fp,
{
autofs_wqt_t token;
- token = (autofs_wqt_t) param->arg1;
+ token = (autofs_wqt_t) param->ready.token;
return autofs4_wait_release(sbi, token, 0);
}
@@ -388,8 +389,8 @@ static int autofs_dev_ioctl_fail(struct file *fp,
autofs_wqt_t token;
int status;
- token = (autofs_wqt_t) param->arg1;
- status = param->arg2 ? param->arg2 : -ENOENT;
+ token = (autofs_wqt_t) param->fail.token;
+ status = param->fail.status ? param->fail.status : -ENOENT;
return autofs4_wait_release(sbi, token, status);
}
@@ -412,10 +413,10 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp,
int pipefd;
int err = 0;
- if (param->arg1 == -1)
+ if (param->setpipefd.pipefd == -1)
return -EINVAL;
- pipefd = param->arg1;
+ pipefd = param->setpipefd.pipefd;
mutex_lock(&sbi->wq_mutex);
if (!sbi->catatonic) {
@@ -457,8 +458,8 @@ static int autofs_dev_ioctl_timeout(struct file *fp,
{
unsigned long timeout;
- timeout = param->arg1;
- param->arg1 = sbi->exp_timeout / HZ;
+ timeout = param->timeout.timeout;
+ param->timeout.timeout = sbi->exp_timeout / HZ;
sbi->exp_timeout = timeout * HZ;
return 0;
}
@@ -489,7 +490,7 @@ static int autofs_dev_ioctl_requester(struct file *fp,
path = param->path;
devid = sbi->sb->s_dev;
- param->arg1 = param->arg2 = -1;
+ param->requester.uid = param->requester.gid = -1;
/* Get nameidata of the parent directory */
err = path_lookup(path, LOOKUP_PARENT, &nd);
@@ -505,8 +506,8 @@ static int autofs_dev_ioctl_requester(struct file *fp,
err = 0;
autofs4_expire_wait(nd.path.dentry);
spin_lock(&sbi->fs_lock);
- param->arg1 = ino->uid;
- param->arg2 = ino->gid;
+ param->requester.uid = ino->uid;
+ param->requester.gid = ino->gid;
spin_unlock(&sbi->fs_lock);
}
@@ -529,10 +530,10 @@ static int autofs_dev_ioctl_expire(struct file *fp,
int err = -EAGAIN;
int how;
- how = param->arg1;
+ how = param->expire.how;
mnt = fp->f_path.mnt;
- if (sbi->type & AUTOFS_TYPE_TRIGGER)
+ if (autofs_type_trigger(sbi->type))
dentry = autofs4_expire_direct(sbi->sb, mnt, sbi, how);
else
dentry = autofs4_expire_indirect(sbi->sb, mnt, sbi, how);
@@ -565,9 +566,9 @@ static int autofs_dev_ioctl_askumount(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
- param->arg1 = 0;
+ param->askumount.may_umount = 0;
if (may_umount(fp->f_path.mnt))
- param->arg1 = 1;
+ param->askumount.may_umount = 1;
return 0;
}
@@ -600,6 +601,7 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
struct nameidata nd;
const char *path;
unsigned int type;
+ unsigned int devid, magic;
int err = -ENOENT;
if (param->size <= sizeof(*param)) {
@@ -608,13 +610,13 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
}
path = param->path;
- type = param->arg1;
+ type = param->ismountpoint.in.type;
- param->arg1 = 0;
- param->arg2 = 0;
+ param->ismountpoint.out.devid = devid = 0;
+ param->ismountpoint.out.magic = magic = 0;
if (!fp || param->ioctlfd == -1) {
- if (type == AUTOFS_TYPE_ANY) {
+ if (autofs_type_any(type)) {
struct super_block *sb;
err = path_lookup(path, LOOKUP_FOLLOW, &nd);
@@ -622,7 +624,7 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
goto out;
sb = nd.path.dentry->d_sb;
- param->arg1 = new_encode_dev(sb->s_dev);
+ devid = new_encode_dev(sb->s_dev);
} else {
struct autofs_info *ino;
@@ -635,38 +637,41 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
goto out_release;
ino = autofs4_dentry_ino(nd.path.dentry);
- param->arg1 = autofs4_get_dev(ino->sbi);
+ devid = autofs4_get_dev(ino->sbi);
}
err = 0;
if (nd.path.dentry->d_inode &&
nd.path.mnt->mnt_root == nd.path.dentry) {
err = 1;
- param->arg2 = nd.path.dentry->d_inode->i_sb->s_magic;
+ magic = nd.path.dentry->d_inode->i_sb->s_magic;
}
} else {
- dev_t devid = new_encode_dev(sbi->sb->s_dev);
+ dev_t dev = autofs4_get_dev(sbi);
err = path_lookup(path, LOOKUP_PARENT, &nd);
if (err)
goto out;
- err = autofs_dev_ioctl_find_super(&nd, devid);
+ err = autofs_dev_ioctl_find_super(&nd, dev);
if (err)
goto out_release;
- param->arg1 = autofs4_get_dev(sbi);
+ devid = dev;
err = have_submounts(nd.path.dentry);
if (nd.path.mnt->mnt_mountpoint != nd.path.mnt->mnt_root) {
if (follow_down(&nd.path.mnt, &nd.path.dentry)) {
struct inode *inode = nd.path.dentry->d_inode;
- param->arg2 = inode->i_sb->s_magic;
+ magic = inode->i_sb->s_magic;
}
}
}
+ param->ismountpoint.out.devid = devid;
+ param->ismountpoint.out.magic = magic;
+
out_release:
path_put(&nd.path);
out:
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 4b6fb3f628c..e3bd50776f9 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -63,7 +63,7 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
/* This is an autofs submount, we can't expire it */
- if (sbi->type == AUTOFS_TYPE_INDIRECT)
+ if (autofs_type_indirect(sbi->type))
goto done;
/*
@@ -490,7 +490,7 @@ int autofs4_expire_multi(struct super_block *sb, struct vfsmount *mnt,
if (arg && get_user(do_now, arg))
return -EFAULT;
- if (sbi->type & AUTOFS_TYPE_TRIGGER)
+ if (autofs_type_trigger(sbi->type))
dentry = autofs4_expire_direct(sb, mnt, sbi, do_now);
else
dentry = autofs4_expire_indirect(sb, mnt, sbi, do_now);
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 7b19802cfef..716e12b627b 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -197,9 +197,9 @@ static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt)
seq_printf(m, ",minproto=%d", sbi->min_proto);
seq_printf(m, ",maxproto=%d", sbi->max_proto);
- if (sbi->type & AUTOFS_TYPE_OFFSET)
+ if (autofs_type_offset(sbi->type))
seq_printf(m, ",offset");
- else if (sbi->type & AUTOFS_TYPE_DIRECT)
+ else if (autofs_type_direct(sbi->type))
seq_printf(m, ",direct");
else
seq_printf(m, ",indirect");
@@ -284,13 +284,13 @@ static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
*maxproto = option;
break;
case Opt_indirect:
- *type = AUTOFS_TYPE_INDIRECT;
+ set_autofs_type_indirect(type);
break;
case Opt_direct:
- *type = AUTOFS_TYPE_DIRECT;
+ set_autofs_type_direct(type);
break;
case Opt_offset:
- *type = AUTOFS_TYPE_OFFSET;
+ set_autofs_type_offset(type);
break;
default:
return 1;
@@ -338,7 +338,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
sbi->sb = s;
sbi->version = 0;
sbi->sub_version = 0;
- sbi->type = AUTOFS_TYPE_INDIRECT;
+ set_autofs_type_indirect(&sbi->type);
sbi->min_proto = 0;
sbi->max_proto = 0;
mutex_init(&sbi->wq_mutex);
@@ -380,7 +380,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
}
root_inode->i_fop = &autofs4_root_operations;
- root_inode->i_op = sbi->type & AUTOFS_TYPE_TRIGGER ?
+ root_inode->i_op = autofs_type_trigger(sbi->type) ?
&autofs4_direct_root_inode_operations :
&autofs4_indirect_root_inode_operations;
@@ -455,11 +455,7 @@ struct inode *autofs4_get_inode(struct super_block *sb,
if (sb->s_root) {
inode->i_uid = sb->s_root->d_inode->i_uid;
inode->i_gid = sb->s_root->d_inode->i_gid;
- } else {
- inode->i_uid = 0;
- inode->i_gid = 0;
}
- inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
if (S_ISDIR(inf->mode)) {
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index e02cc8ae5eb..eeb24684590 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -337,7 +337,7 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
* is very similar for indirect mounts except only dentrys
* in the root of the autofs file system may be negative.
*/
- if (sbi->type & AUTOFS_TYPE_TRIGGER)
+ if (autofs_type_trigger(sbi->type))
return -ENOENT;
else if (!IS_ROOT(dentry->d_parent))
return -ENOENT;
@@ -348,7 +348,7 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
return -ENOMEM;
/* If this is a direct mount request create a dummy name */
- if (IS_ROOT(dentry) && sbi->type & AUTOFS_TYPE_TRIGGER)
+ if (IS_ROOT(dentry) && autofs_type_trigger(sbi->type))
qstr.len = sprintf(name, "%p", dentry);
else {
qstr.len = autofs4_getpath(sbi, dentry, &name);
@@ -406,11 +406,11 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
type = autofs_ptype_expire_multi;
} else {
if (notify == NFY_MOUNT)
- type = (sbi->type & AUTOFS_TYPE_TRIGGER) ?
+ type = autofs_type_trigger(sbi->type) ?
autofs_ptype_missing_direct :
autofs_ptype_missing_indirect;
else
- type = (sbi->type & AUTOFS_TYPE_TRIGGER) ?
+ type = autofs_type_trigger(sbi->type) ?
autofs_ptype_expire_direct :
autofs_ptype_expire_indirect;
}
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 0ed57b5ee01..cc4062d12ca 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -213,6 +213,9 @@ static void bfs_put_super(struct super_block *s)
{
struct bfs_sb_info *info = BFS_SB(s);
+ if (!info)
+ return;
+
brelse(info->si_sbh);
mutex_destroy(&info->bfs_lock);
kfree(info->si_imap);
@@ -327,6 +330,7 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
unsigned i, imap_len;
struct bfs_sb_info *info;
long ret = -EINVAL;
+ unsigned long i_sblock, i_eblock, i_eoff, s_size;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
@@ -350,6 +354,12 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
s->s_magic = BFS_MAGIC;
info->si_sbh = bh;
+
+ if (le32_to_cpu(bfs_sb->s_start) > le32_to_cpu(bfs_sb->s_end)) {
+ printf("Superblock is corrupted\n");
+ goto out;
+ }
+
info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) /
sizeof(struct bfs_inode)
+ BFS_ROOT_INO - 1;
@@ -380,6 +390,18 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
- le32_to_cpu(bfs_sb->s_start)) >> BFS_BSIZE_BITS;
info->si_freei = 0;
info->si_lf_eblk = 0;
+
+ /* can we read the last block? */
+ bh = sb_bread(s, info->si_blocks - 1);
+ if (!bh) {
+ printf("Last block not available: %lu\n", info->si_blocks - 1);
+ iput(inode);
+ ret = -EIO;
+ kfree(info->si_imap);
+ goto out;
+ }
+ brelse(bh);
+
bh = NULL;
for (i = BFS_ROOT_INO; i <= info->si_lasti; i++) {
struct bfs_inode *di;
@@ -397,6 +419,29 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
di = (struct bfs_inode *)bh->b_data + off;
+ /* test if filesystem is not corrupted */
+
+ i_eoff = le32_to_cpu(di->i_eoffset);
+ i_sblock = le32_to_cpu(di->i_sblock);
+ i_eblock = le32_to_cpu(di->i_eblock);
+ s_size = le32_to_cpu(bfs_sb->s_end);
+
+ if (i_sblock > info->si_blocks ||
+ i_eblock > info->si_blocks ||
+ i_sblock > i_eblock ||
+ i_eoff > s_size ||
+ i_sblock * BFS_BSIZE > i_eoff) {
+
+ printf("Inode 0x%08x corrupted\n", i);
+
+ brelse(bh);
+ s->s_root = NULL;
+ kfree(info->si_imap);
+ kfree(info);
+ s->s_fs_info = NULL;
+ return -EIO;
+ }
+
if (!di->i_ino) {
info->si_freei++;
continue;
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index c41fa2af767..e3ff2b9e602 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -152,8 +152,10 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
elf_addr_t __user *sp;
elf_addr_t __user *u_platform;
elf_addr_t __user *u_base_platform;
+ elf_addr_t __user *u_rand_bytes;
const char *k_platform = ELF_PLATFORM;
const char *k_base_platform = ELF_BASE_PLATFORM;
+ unsigned char k_rand_bytes[16];
int items;
elf_addr_t *elf_info;
int ei_index = 0;
@@ -196,6 +198,15 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
return -EFAULT;
}
+ /*
+ * Generate 16 random bytes for userspace PRNG seeding.
+ */
+ get_random_bytes(k_rand_bytes, sizeof(k_rand_bytes));
+ u_rand_bytes = (elf_addr_t __user *)
+ STACK_ALLOC(p, sizeof(k_rand_bytes));
+ if (__copy_to_user(u_rand_bytes, k_rand_bytes, sizeof(k_rand_bytes)))
+ return -EFAULT;
+
/* Create the ELF interpreter info */
elf_info = (elf_addr_t *)current->mm->saved_auxv;
/* update AT_VECTOR_SIZE_BASE if the number of NEW_AUX_ENT() changes */
@@ -228,6 +239,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
NEW_AUX_ENT(AT_GID, cred->gid);
NEW_AUX_ENT(AT_EGID, cred->egid);
NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
+ NEW_AUX_ENT(AT_RANDOM, (elf_addr_t)(unsigned long)u_rand_bytes);
NEW_AUX_ENT(AT_EXECFN, bprm->exec);
if (k_platform) {
NEW_AUX_ENT(AT_PLATFORM,
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index f2744ab4e5b..c4e83537ead 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -496,9 +496,6 @@ static struct inode *bm_get_inode(struct super_block *sb, int mode)
if (inode) {
inode->i_mode = mode;
- inode->i_uid = 0;
- inode->i_gid = 0;
- inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime =
current_fs_time(inode->i_sb);
}
@@ -652,7 +649,7 @@ static const struct file_operations bm_register_operations = {
static ssize_t
bm_status_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
{
- char *s = enabled ? "enabled" : "disabled";
+ char *s = enabled ? "enabled\n" : "disabled\n";
return simple_read_from_buffer(buf, nbytes, ppos, s, strlen(s));
}
diff --git a/fs/bio.c b/fs/bio.c
index 711cee10360..062299acbcc 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -788,6 +788,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
int i, ret;
int nr_pages = 0;
unsigned int len = 0;
+ unsigned int offset = map_data ? map_data->offset & ~PAGE_MASK : 0;
for (i = 0; i < iov_count; i++) {
unsigned long uaddr;
@@ -814,35 +815,42 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
bio->bi_rw |= (!write_to_vm << BIO_RW);
ret = 0;
- i = 0;
+
+ if (map_data) {
+ nr_pages = 1 << map_data->page_order;
+ i = map_data->offset / PAGE_SIZE;
+ }
while (len) {
- unsigned int bytes;
+ unsigned int bytes = PAGE_SIZE;
- if (map_data)
- bytes = 1U << (PAGE_SHIFT + map_data->page_order);
- else
- bytes = PAGE_SIZE;
+ bytes -= offset;
if (bytes > len)
bytes = len;
if (map_data) {
- if (i == map_data->nr_entries) {
+ if (i == map_data->nr_entries * nr_pages) {
ret = -ENOMEM;
break;
}
- page = map_data->pages[i++];
- } else
+
+ page = map_data->pages[i / nr_pages];
+ page += (i % nr_pages);
+
+ i++;
+ } else {
page = alloc_page(q->bounce_gfp | gfp_mask);
- if (!page) {
- ret = -ENOMEM;
- break;
+ if (!page) {
+ ret = -ENOMEM;
+ break;
+ }
}
- if (bio_add_pc_page(q, bio, page, bytes, 0) < bytes)
+ if (bio_add_pc_page(q, bio, page, bytes, offset) < bytes)
break;
len -= bytes;
+ offset = 0;
}
if (ret)
@@ -851,7 +859,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
/*
* success
*/
- if (!write_to_vm) {
+ if (!write_to_vm && (!map_data || !map_data->null_mapped)) {
ret = __bio_copy_iov(bio, bio->bi_io_vec, iov, iov_count, 0, 0);
if (ret)
goto cleanup;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 1dd07e66e98..ac7031f12ea 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1005,6 +1005,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
}
lock_kernel();
+ restart:
ret = -ENXIO;
disk = get_gendisk(bdev->bd_dev, &partno);
@@ -1025,6 +1026,19 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
if (disk->fops->open) {
ret = disk->fops->open(bdev, mode);
+ if (ret == -ERESTARTSYS) {
+ /* Lost a race with 'disk' being
+ * deleted, try again.
+ * See md.c
+ */
+ disk_put_part(bdev->bd_part);
+ bdev->bd_part = NULL;
+ module_put(disk->fops->owner);
+ put_disk(disk);
+ bdev->bd_disk = NULL;
+ mutex_unlock(&bdev->bd_mutex);
+ goto restart;
+ }
if (ret)
goto out_clear;
}
@@ -1277,7 +1291,7 @@ EXPORT_SYMBOL(ioctl_by_bdev);
/**
* lookup_bdev - lookup a struct block_device by name
- * @path: special file representing the block device
+ * @pathname: special file representing the block device
*
* Get a reference to the blockdevice at @pathname in the current
* namespace if possible and return it. Return ERR_PTR(error)
diff --git a/fs/buffer.c b/fs/buffer.c
index a13f09b696f..c26da785938 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2022,7 +2022,6 @@ int block_write_begin(struct file *file, struct address_space *mapping,
if (pos + len > inode->i_size)
vmtruncate(inode, inode->i_size);
}
- goto out;
}
out:
diff --git a/fs/char_dev.c b/fs/char_dev.c
index 700697a7261..38f71222a55 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -120,7 +120,7 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor,
cd->major = major;
cd->baseminor = baseminor;
cd->minorct = minorct;
- strncpy(cd->name,name, 64);
+ strlcpy(cd->name, name, sizeof(cd->name));
i = major_to_index(major);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index f247da9f4ed..5ab9896fdcb 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1641,7 +1641,7 @@ do_expand:
i_size_write(inode, offset);
spin_unlock(&inode->i_lock);
out_truncate:
- if (inode->i_op && inode->i_op->truncate)
+ if (inode->i_op->truncate)
inode->i_op->truncate(inode);
return 0;
out_sig:
diff --git a/fs/coda/file.c b/fs/coda/file.c
index 466303db2df..6a347fbc998 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -201,8 +201,7 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
int coda_fsync(struct file *coda_file, struct dentry *coda_dentry, int datasync)
{
struct file *host_file;
- struct dentry *host_dentry;
- struct inode *host_inode, *coda_inode = coda_dentry->d_inode;
+ struct inode *coda_inode = coda_dentry->d_inode;
struct coda_file_info *cfi;
int err = 0;
@@ -214,14 +213,7 @@ int coda_fsync(struct file *coda_file, struct dentry *coda_dentry, int datasync)
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
host_file = cfi->cfi_container;
- if (host_file->f_op && host_file->f_op->fsync) {
- host_dentry = host_file->f_path.dentry;
- host_inode = host_dentry->d_inode;
- mutex_lock(&host_inode->i_mutex);
- err = host_file->f_op->fsync(host_file, host_dentry, datasync);
- mutex_unlock(&host_inode->i_mutex);
- }
-
+ err = vfs_fsync(host_file, host_file->f_path.dentry, datasync);
if ( !err && !datasync ) {
lock_kernel();
err = venus_fsync(coda_inode->i_sb, coda_i2f(coda_inode));
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
index 81b7771c646..43c96ce2961 100644
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -11,7 +11,9 @@
#include "coda_int.h"
+#ifdef CONFIG_SYSCTL
static struct ctl_table_header *fs_table_header;
+#endif
static ctl_table coda_table[] = {
{
@@ -41,6 +43,7 @@ static ctl_table coda_table[] = {
{}
};
+#ifdef CONFIG_SYSCTL
static ctl_table fs_table[] = {
{
.ctl_name = CTL_UNNUMBERED,
@@ -50,7 +53,7 @@ static ctl_table fs_table[] = {
},
{}
};
-
+#endif
void coda_sysctl_init(void)
{
diff --git a/fs/compat.c b/fs/compat.c
index d1ece79b641..30f2faa22f5 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1187,6 +1187,9 @@ compat_sys_readv(unsigned long fd, const struct compat_iovec __user *vec, unsign
ret = compat_do_readv_writev(READ, file, vec, vlen, &file->f_pos);
out:
+ if (ret > 0)
+ add_rchar(current, ret);
+ inc_syscr(current);
fput(file);
return ret;
}
@@ -1210,6 +1213,9 @@ compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec, unsig
ret = compat_do_readv_writev(WRITE, file, vec, vlen, &file->f_pos);
out:
+ if (ret > 0)
+ add_wchar(current, ret);
+ inc_syscw(current);
fput(file);
return ret;
}
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index 4803ccc9448..5d349d38e05 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -117,8 +117,6 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr)
static inline void set_default_inode_attr(struct inode * inode, mode_t mode)
{
inode->i_mode = mode;
- inode->i_uid = 0;
- inode->i_gid = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
}
@@ -136,7 +134,6 @@ struct inode * configfs_new_inode(mode_t mode, struct configfs_dirent * sd)
{
struct inode * inode = new_inode(configfs_sb);
if (inode) {
- inode->i_blocks = 0;
inode->i_mapping->a_ops = &configfs_aops;
inode->i_mapping->backing_dev_info = &configfs_backing_dev_info;
inode->i_op = &configfs_inode_operations;
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index f40423eb1a1..a07338d2d14 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -83,8 +83,6 @@ static struct inode *get_cramfs_inode(struct super_block *sb,
inode->i_op = &page_symlink_inode_operations;
inode->i_data.a_ops = &cramfs_aops;
} else {
- inode->i_size = 0;
- inode->i_blocks = 0;
init_special_inode(inode, inode->i_mode,
old_decode_dev(cramfs_inode->size));
}
diff --git a/fs/dcache.c b/fs/dcache.c
index e88c23b85a3..4547f66884a 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1567,10 +1567,6 @@ void d_rehash(struct dentry * entry)
spin_unlock(&dcache_lock);
}
-#define do_switch(x,y) do { \
- __typeof__ (x) __tmp = x; \
- x = y; y = __tmp; } while (0)
-
/*
* When switching names, the actual string doesn't strictly have to
* be preserved in the target - because we're dropping the target
@@ -1589,7 +1585,7 @@ static void switch_names(struct dentry *dentry, struct dentry *target)
/*
* Both external: swap the pointers
*/
- do_switch(target->d_name.name, dentry->d_name.name);
+ swap(target->d_name.name, dentry->d_name.name);
} else {
/*
* dentry:internal, target:external. Steal target's
@@ -1620,7 +1616,7 @@ static void switch_names(struct dentry *dentry, struct dentry *target)
return;
}
}
- do_switch(dentry->d_name.len, target->d_name.len);
+ swap(dentry->d_name.len, target->d_name.len);
}
/*
@@ -1680,7 +1676,7 @@ already_unhashed:
/* Switch the names.. */
switch_names(dentry, target);
- do_switch(dentry->d_name.hash, target->d_name.hash);
+ swap(dentry->d_name.hash, target->d_name.hash);
/* ... and switch the parents */
if (IS_ROOT(dentry)) {
@@ -1688,7 +1684,7 @@ already_unhashed:
target->d_parent = target;
INIT_LIST_HEAD(&target->d_u.d_child);
} else {
- do_switch(dentry->d_parent, target->d_parent);
+ swap(dentry->d_parent, target->d_parent);
/* And add them back to the (new) parent lists */
list_add(&target->d_u.d_child, &target->d_parent->d_subdirs);
@@ -1789,7 +1785,7 @@ static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon)
struct dentry *dparent, *aparent;
switch_names(dentry, anon);
- do_switch(dentry->d_name.hash, anon->d_name.hash);
+ swap(dentry->d_name.hash, anon->d_name.hash);
dparent = dentry->d_parent;
aparent = anon->d_parent;
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 159a5efd6a8..33a90120f6a 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -294,6 +294,38 @@ struct dentry *debugfs_create_x32(const char *name, mode_t mode,
}
EXPORT_SYMBOL_GPL(debugfs_create_x32);
+
+static int debugfs_size_t_set(void *data, u64 val)
+{
+ *(size_t *)data = val;
+ return 0;
+}
+static int debugfs_size_t_get(void *data, u64 *val)
+{
+ *val = *(size_t *)data;
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_size_t, debugfs_size_t_get, debugfs_size_t_set,
+ "%llu\n"); /* %llu and %zu are more or less the same */
+
+/**
+ * debugfs_create_size_t - create a debugfs file that is used to read and write an size_t value
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file. This should be a
+ * directory dentry if set. If this parameter is %NULL, then the
+ * file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ * from.
+ */
+struct dentry *debugfs_create_size_t(const char *name, mode_t mode,
+ struct dentry *parent, size_t *value)
+{
+ return debugfs_create_file(name, mode, parent, value, &fops_size_t);
+}
+EXPORT_SYMBOL_GPL(debugfs_create_size_t);
+
+
static ssize_t read_file_bool(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 3dbe2169cf3..81ae9ea3c6e 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -37,9 +37,6 @@ static struct inode *debugfs_get_inode(struct super_block *sb, int mode, dev_t d
if (inode) {
inode->i_mode = mode;
- inode->i_uid = 0;
- inode->i_gid = 0;
- inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
switch (mode & S_IFMT) {
default:
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index fff96e152c0..5f3231b9633 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -189,8 +189,6 @@ static int mknod_ptmx(struct super_block *sb)
}
inode->i_ino = 2;
- inode->i_uid = inode->i_gid = 0;
- inode->i_blocks = 0;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
mode = S_IFCHR|opts->ptmxmode;
@@ -300,8 +298,6 @@ devpts_fill_super(struct super_block *s, void *data, int silent)
goto free_fsi;
inode->i_ino = 1;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
- inode->i_blocks = 0;
- inode->i_uid = inode->i_gid = 0;
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
inode->i_op = &simple_dir_inode_operations;
inode->i_fop = &simple_dir_operations;
diff --git a/fs/direct-io.c b/fs/direct-io.c
index af0558dbe8b..b6d43908ff7 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1209,6 +1209,19 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
retval = direct_io_worker(rw, iocb, inode, iov, offset,
nr_segs, blkbits, get_block, end_io, dio);
+ /*
+ * In case of error extending write may have instantiated a few
+ * blocks outside i_size. Trim these off again for DIO_LOCKING.
+ * NOTE: DIO_NO_LOCK/DIO_OWN_LOCK callers have to handle this by
+ * it's own meaner.
+ */
+ if (unlikely(retval < 0 && (rw & WRITE))) {
+ loff_t isize = i_size_read(inode);
+
+ if (end > isize && dio_lock_type == DIO_LOCKING)
+ vmtruncate(inode, isize);
+ }
+
if (rw == READ && dio_lock_type == DIO_LOCKING)
release_i_mutex = 0;
diff --git a/fs/dlm/ast.c b/fs/dlm/ast.c
index 8bf31e3fbf0..dc2ad6008b2 100644
--- a/fs/dlm/ast.c
+++ b/fs/dlm/ast.c
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -33,10 +33,10 @@ void dlm_del_ast(struct dlm_lkb *lkb)
spin_unlock(&ast_queue_lock);
}
-void dlm_add_ast(struct dlm_lkb *lkb, int type)
+void dlm_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
{
if (lkb->lkb_flags & DLM_IFL_USER) {
- dlm_user_add_ast(lkb, type);
+ dlm_user_add_ast(lkb, type, bastmode);
return;
}
@@ -46,6 +46,8 @@ void dlm_add_ast(struct dlm_lkb *lkb, int type)
list_add_tail(&lkb->lkb_astqueue, &ast_queue);
}
lkb->lkb_ast_type |= type;
+ if (bastmode)
+ lkb->lkb_bastmode = bastmode;
spin_unlock(&ast_queue_lock);
set_bit(WAKE_ASTS, &astd_wakeflags);
@@ -59,50 +61,40 @@ static void process_asts(void)
struct dlm_lkb *lkb;
void (*cast) (void *astparam);
void (*bast) (void *astparam, int mode);
- int type = 0, found, bmode;
-
- for (;;) {
- found = 0;
- spin_lock(&ast_queue_lock);
- list_for_each_entry(lkb, &ast_queue, lkb_astqueue) {
- r = lkb->lkb_resource;
- ls = r->res_ls;
-
- if (dlm_locking_stopped(ls))
- continue;
-
- list_del(&lkb->lkb_astqueue);
- type = lkb->lkb_ast_type;
- lkb->lkb_ast_type = 0;
- found = 1;
- break;
- }
- spin_unlock(&ast_queue_lock);
+ int type = 0, bastmode;
+
+repeat:
+ spin_lock(&ast_queue_lock);
+ list_for_each_entry(lkb, &ast_queue, lkb_astqueue) {
+ r = lkb->lkb_resource;
+ ls = r->res_ls;
+
+ if (dlm_locking_stopped(ls))
+ continue;
- if (!found)
- break;
+ list_del(&lkb->lkb_astqueue);
+ type = lkb->lkb_ast_type;
+ lkb->lkb_ast_type = 0;
+ bastmode = lkb->lkb_bastmode;
+ spin_unlock(&ast_queue_lock);
cast = lkb->lkb_astfn;
bast = lkb->lkb_bastfn;
- bmode = lkb->lkb_bastmode;
if ((type & AST_COMP) && cast)
cast(lkb->lkb_astparam);
- /* FIXME: Is it safe to look at lkb_grmode here
- without doing a lock_rsb() ?
- Look at other checks in v1 to avoid basts. */
-
if ((type & AST_BAST) && bast)
- if (!dlm_modes_compat(lkb->lkb_grmode, bmode))
- bast(lkb->lkb_astparam, bmode);
+ bast(lkb->lkb_astparam, bastmode);
/* this removes the reference added by dlm_add_ast
and may result in the lkb being freed */
dlm_put_lkb(lkb);
- schedule();
+ cond_resched();
+ goto repeat;
}
+ spin_unlock(&ast_queue_lock);
}
static inline int no_asts(void)
diff --git a/fs/dlm/ast.h b/fs/dlm/ast.h
index 6ee276c74c5..1b5fc5f428f 100644
--- a/fs/dlm/ast.h
+++ b/fs/dlm/ast.h
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -13,7 +13,7 @@
#ifndef __ASTD_DOT_H__
#define __ASTD_DOT_H__
-void dlm_add_ast(struct dlm_lkb *lkb, int type);
+void dlm_add_ast(struct dlm_lkb *lkb, int type, int bastmode);
void dlm_del_ast(struct dlm_lkb *lkb);
void dlm_astd_wake(void);
diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c
index 8fc24f4507a..2f107d1a6a4 100644
--- a/fs/dlm/debug_fs.c
+++ b/fs/dlm/debug_fs.c
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -27,7 +27,7 @@ static struct dentry *dlm_root;
struct rsb_iter {
int entry;
- int locks;
+ int format;
int header;
struct dlm_ls *ls;
struct list_head *next;
@@ -60,8 +60,8 @@ static char *print_lockmode(int mode)
}
}
-static void print_resource_lock(struct seq_file *s, struct dlm_lkb *lkb,
- struct dlm_rsb *res)
+static void print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb,
+ struct dlm_rsb *res)
{
seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode));
@@ -83,7 +83,7 @@ static void print_resource_lock(struct seq_file *s, struct dlm_lkb *lkb,
seq_printf(s, "\n");
}
-static int print_resource(struct dlm_rsb *res, struct seq_file *s)
+static int print_format1(struct dlm_rsb *res, struct seq_file *s)
{
struct dlm_lkb *lkb;
int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list;
@@ -134,15 +134,15 @@ static int print_resource(struct dlm_rsb *res, struct seq_file *s)
/* Print the locks attached to this resource */
seq_printf(s, "Granted Queue\n");
list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue)
- print_resource_lock(s, lkb, res);
+ print_format1_lock(s, lkb, res);
seq_printf(s, "Conversion Queue\n");
list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue)
- print_resource_lock(s, lkb, res);
+ print_format1_lock(s, lkb, res);
seq_printf(s, "Waiting Queue\n");
list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue)
- print_resource_lock(s, lkb, res);
+ print_format1_lock(s, lkb, res);
if (list_empty(&res->res_lookup))
goto out;
@@ -160,23 +160,24 @@ static int print_resource(struct dlm_rsb *res, struct seq_file *s)
return 0;
}
-static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb *r)
+static void print_format2_lock(struct seq_file *s, struct dlm_lkb *lkb,
+ struct dlm_rsb *r)
{
- unsigned int waiting = 0;
- uint64_t xid = 0;
+ u64 xid = 0;
+ u64 us;
if (lkb->lkb_flags & DLM_IFL_USER) {
if (lkb->lkb_ua)
xid = lkb->lkb_ua->xid;
}
- if (lkb->lkb_timestamp)
- waiting = jiffies_to_msecs(jiffies - lkb->lkb_timestamp);
+ /* microseconds since lkb was added to current queue */
+ us = ktime_to_us(ktime_sub(ktime_get(), lkb->lkb_timestamp));
- /* id nodeid remid pid xid exflags flags sts grmode rqmode time_ms
+ /* id nodeid remid pid xid exflags flags sts grmode rqmode time_us
r_nodeid r_len r_name */
- seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %u %u %d \"%s\"\n",
+ seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %llu %u %d \"%s\"\n",
lkb->lkb_id,
lkb->lkb_nodeid,
lkb->lkb_remid,
@@ -187,26 +188,114 @@ static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb *
lkb->lkb_status,
lkb->lkb_grmode,
lkb->lkb_rqmode,
- waiting,
+ (unsigned long long)us,
r->res_nodeid,
r->res_length,
r->res_name);
}
-static int print_locks(struct dlm_rsb *r, struct seq_file *s)
+static int print_format2(struct dlm_rsb *r, struct seq_file *s)
{
struct dlm_lkb *lkb;
lock_rsb(r);
list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue)
- print_lock(s, lkb, r);
+ print_format2_lock(s, lkb, r);
list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue)
- print_lock(s, lkb, r);
+ print_format2_lock(s, lkb, r);
list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue)
- print_lock(s, lkb, r);
+ print_format2_lock(s, lkb, r);
+
+ unlock_rsb(r);
+ return 0;
+}
+
+static void print_format3_lock(struct seq_file *s, struct dlm_lkb *lkb,
+ int rsb_lookup)
+{
+ u64 xid = 0;
+
+ if (lkb->lkb_flags & DLM_IFL_USER) {
+ if (lkb->lkb_ua)
+ xid = lkb->lkb_ua->xid;
+ }
+
+ seq_printf(s, "lkb %x %d %x %u %llu %x %x %d %d %d %d %d %d %u %llu %llu\n",
+ lkb->lkb_id,
+ lkb->lkb_nodeid,
+ lkb->lkb_remid,
+ lkb->lkb_ownpid,
+ (unsigned long long)xid,
+ lkb->lkb_exflags,
+ lkb->lkb_flags,
+ lkb->lkb_status,
+ lkb->lkb_grmode,
+ lkb->lkb_rqmode,
+ lkb->lkb_highbast,
+ rsb_lookup,
+ lkb->lkb_wait_type,
+ lkb->lkb_lvbseq,
+ (unsigned long long)ktime_to_ns(lkb->lkb_timestamp),
+ (unsigned long long)ktime_to_ns(lkb->lkb_time_bast));
+}
+
+static int print_format3(struct dlm_rsb *r, struct seq_file *s)
+{
+ struct dlm_lkb *lkb;
+ int i, lvblen = r->res_ls->ls_lvblen;
+ int print_name = 1;
+
+ lock_rsb(r);
+
+ seq_printf(s, "rsb %p %d %x %lx %d %d %u %d ",
+ r,
+ r->res_nodeid,
+ r->res_first_lkid,
+ r->res_flags,
+ !list_empty(&r->res_root_list),
+ !list_empty(&r->res_recover_list),
+ r->res_recover_locks_count,
+ r->res_length);
+
+ for (i = 0; i < r->res_length; i++) {
+ if (!isascii(r->res_name[i]) || !isprint(r->res_name[i]))
+ print_name = 0;
+ }
+
+ seq_printf(s, "%s", print_name ? "str " : "hex");
+
+ for (i = 0; i < r->res_length; i++) {
+ if (print_name)
+ seq_printf(s, "%c", r->res_name[i]);
+ else
+ seq_printf(s, " %02x", (unsigned char)r->res_name[i]);
+ }
+ seq_printf(s, "\n");
+
+ if (!r->res_lvbptr)
+ goto do_locks;
+
+ seq_printf(s, "lvb %u %d", r->res_lvbseq, lvblen);
+
+ for (i = 0; i < lvblen; i++)
+ seq_printf(s, " %02x", (unsigned char)r->res_lvbptr[i]);
+ seq_printf(s, "\n");
+
+ do_locks:
+ list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue)
+ print_format3_lock(s, lkb, 0);
+
+ list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue)
+ print_format3_lock(s, lkb, 0);
+
+ list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue)
+ print_format3_lock(s, lkb, 0);
+
+ list_for_each_entry(lkb, &r->res_lookup, lkb_rsb_lookup)
+ print_format3_lock(s, lkb, 1);
unlock_rsb(r);
return 0;
@@ -231,7 +320,7 @@ static int rsb_iter_next(struct rsb_iter *ri)
break;
}
read_unlock(&ls->ls_rsbtbl[i].lock);
- }
+ }
ri->entry = i;
if (ri->entry >= ls->ls_rsbtbl_size)
@@ -248,7 +337,7 @@ static int rsb_iter_next(struct rsb_iter *ri)
read_unlock(&ls->ls_rsbtbl[i].lock);
dlm_put_rsb(old);
goto top;
- }
+ }
ri->rsb = list_entry(ri->next, struct dlm_rsb, res_hashchain);
dlm_hold_rsb(ri->rsb);
read_unlock(&ls->ls_rsbtbl[i].lock);
@@ -274,6 +363,7 @@ static struct rsb_iter *rsb_iter_init(struct dlm_ls *ls)
ri->ls = ls;
ri->entry = 0;
ri->next = NULL;
+ ri->format = 1;
if (rsb_iter_next(ri)) {
rsb_iter_free(ri);
@@ -325,16 +415,26 @@ static int rsb_seq_show(struct seq_file *file, void *iter_ptr)
{
struct rsb_iter *ri = iter_ptr;
- if (ri->locks) {
+ switch (ri->format) {
+ case 1:
+ print_format1(ri->rsb, file);
+ break;
+ case 2:
if (ri->header) {
- seq_printf(file, "id nodeid remid pid xid exflags flags "
- "sts grmode rqmode time_ms r_nodeid "
- "r_len r_name\n");
+ seq_printf(file, "id nodeid remid pid xid exflags "
+ "flags sts grmode rqmode time_ms "
+ "r_nodeid r_len r_name\n");
ri->header = 0;
}
- print_locks(ri->rsb, file);
- } else {
- print_resource(ri->rsb, file);
+ print_format2(ri->rsb, file);
+ break;
+ case 3:
+ if (ri->header) {
+ seq_printf(file, "version rsb 1.1 lvb 1.1 lkb 1.1\n");
+ ri->header = 0;
+ }
+ print_format3(ri->rsb, file);
+ break;
}
return 0;
@@ -385,7 +485,7 @@ static struct rsb_iter *locks_iter_init(struct dlm_ls *ls, loff_t *pos)
ri->ls = ls;
ri->entry = 0;
ri->next = NULL;
- ri->locks = 1;
+ ri->format = 2;
if (*pos == 0)
ri->header = 1;
@@ -448,6 +548,84 @@ static const struct file_operations locks_fops = {
};
/*
+ * Dump all rsb/lvb/lkb state in compact listing, more complete than _locks
+ * This can replace both formats 1 and 2 eventually.
+ */
+
+static struct rsb_iter *all_iter_init(struct dlm_ls *ls, loff_t *pos)
+{
+ struct rsb_iter *ri;
+
+ ri = kzalloc(sizeof *ri, GFP_KERNEL);
+ if (!ri)
+ return NULL;
+
+ ri->ls = ls;
+ ri->entry = 0;
+ ri->next = NULL;
+ ri->format = 3;
+
+ if (*pos == 0)
+ ri->header = 1;
+
+ if (rsb_iter_next(ri)) {
+ rsb_iter_free(ri);
+ return NULL;
+ }
+
+ return ri;
+}
+
+static void *all_seq_start(struct seq_file *file, loff_t *pos)
+{
+ struct rsb_iter *ri;
+ loff_t n = *pos;
+
+ ri = all_iter_init(file->private, pos);
+ if (!ri)
+ return NULL;
+
+ while (n--) {
+ if (rsb_iter_next(ri)) {
+ rsb_iter_free(ri);
+ return NULL;
+ }
+ }
+
+ return ri;
+}
+
+static struct seq_operations all_seq_ops = {
+ .start = all_seq_start,
+ .next = rsb_seq_next,
+ .stop = rsb_seq_stop,
+ .show = rsb_seq_show,
+};
+
+static int all_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq;
+ int ret;
+
+ ret = seq_open(file, &all_seq_ops);
+ if (ret)
+ return ret;
+
+ seq = file->private_data;
+ seq->private = inode->i_private;
+
+ return 0;
+}
+
+static const struct file_operations all_fops = {
+ .owner = THIS_MODULE,
+ .open = all_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release
+};
+
+/*
* dump lkb's on the ls_waiters list
*/
@@ -489,30 +667,33 @@ static const struct file_operations waiters_fops = {
.read = waiters_read
};
+void dlm_delete_debug_file(struct dlm_ls *ls)
+{
+ if (ls->ls_debug_rsb_dentry)
+ debugfs_remove(ls->ls_debug_rsb_dentry);
+ if (ls->ls_debug_waiters_dentry)
+ debugfs_remove(ls->ls_debug_waiters_dentry);
+ if (ls->ls_debug_locks_dentry)
+ debugfs_remove(ls->ls_debug_locks_dentry);
+ if (ls->ls_debug_all_dentry)
+ debugfs_remove(ls->ls_debug_all_dentry);
+}
+
int dlm_create_debug_file(struct dlm_ls *ls)
{
char name[DLM_LOCKSPACE_LEN+8];
+ /* format 1 */
+
ls->ls_debug_rsb_dentry = debugfs_create_file(ls->ls_name,
S_IFREG | S_IRUGO,
dlm_root,
ls,
&rsb_fops);
if (!ls->ls_debug_rsb_dentry)
- return -ENOMEM;
+ goto fail;
- memset(name, 0, sizeof(name));
- snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_waiters", ls->ls_name);
-
- ls->ls_debug_waiters_dentry = debugfs_create_file(name,
- S_IFREG | S_IRUGO,
- dlm_root,
- ls,
- &waiters_fops);
- if (!ls->ls_debug_waiters_dentry) {
- debugfs_remove(ls->ls_debug_rsb_dentry);
- return -ENOMEM;
- }
+ /* format 2 */
memset(name, 0, sizeof(name));
snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_locks", ls->ls_name);
@@ -522,23 +703,38 @@ int dlm_create_debug_file(struct dlm_ls *ls)
dlm_root,
ls,
&locks_fops);
- if (!ls->ls_debug_locks_dentry) {
- debugfs_remove(ls->ls_debug_waiters_dentry);
- debugfs_remove(ls->ls_debug_rsb_dentry);
- return -ENOMEM;
- }
+ if (!ls->ls_debug_locks_dentry)
+ goto fail;
+
+ /* format 3 */
+
+ memset(name, 0, sizeof(name));
+ snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_all", ls->ls_name);
+
+ ls->ls_debug_all_dentry = debugfs_create_file(name,
+ S_IFREG | S_IRUGO,
+ dlm_root,
+ ls,
+ &all_fops);
+ if (!ls->ls_debug_all_dentry)
+ goto fail;
+
+ memset(name, 0, sizeof(name));
+ snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_waiters", ls->ls_name);
+
+ ls->ls_debug_waiters_dentry = debugfs_create_file(name,
+ S_IFREG | S_IRUGO,
+ dlm_root,
+ ls,
+ &waiters_fops);
+ if (!ls->ls_debug_waiters_dentry)
+ goto fail;
return 0;
-}
-void dlm_delete_debug_file(struct dlm_ls *ls)
-{
- if (ls->ls_debug_rsb_dentry)
- debugfs_remove(ls->ls_debug_rsb_dentry);
- if (ls->ls_debug_waiters_dentry)
- debugfs_remove(ls->ls_debug_waiters_dentry);
- if (ls->ls_debug_locks_dentry)
- debugfs_remove(ls->ls_debug_locks_dentry);
+ fail:
+ dlm_delete_debug_file(ls);
+ return -ENOMEM;
}
int __init dlm_register_debugfs(void)
diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c
index 85defeb64df..92969f879a1 100644
--- a/fs/dlm/dir.c
+++ b/fs/dlm/dir.c
@@ -374,7 +374,7 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen,
struct list_head *list;
struct dlm_rsb *r;
int offset = 0, dir_nodeid;
- uint16_t be_namelen;
+ __be16 be_namelen;
down_read(&ls->ls_root_sem);
@@ -410,15 +410,15 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen,
if (offset + sizeof(uint16_t)*2 + r->res_length > outlen) {
/* Write end-of-block record */
- be_namelen = 0;
- memcpy(outbuf + offset, &be_namelen, sizeof(uint16_t));
- offset += sizeof(uint16_t);
+ be_namelen = cpu_to_be16(0);
+ memcpy(outbuf + offset, &be_namelen, sizeof(__be16));
+ offset += sizeof(__be16);
goto out;
}
be_namelen = cpu_to_be16(r->res_length);
- memcpy(outbuf + offset, &be_namelen, sizeof(uint16_t));
- offset += sizeof(uint16_t);
+ memcpy(outbuf + offset, &be_namelen, sizeof(__be16));
+ offset += sizeof(__be16);
memcpy(outbuf + offset, r->res_name, r->res_length);
offset += r->res_length;
}
@@ -430,9 +430,9 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen,
if ((list == &ls->ls_root_list) &&
(offset + sizeof(uint16_t) <= outlen)) {
- be_namelen = 0xFFFF;
- memcpy(outbuf + offset, &be_namelen, sizeof(uint16_t));
- offset += sizeof(uint16_t);
+ be_namelen = cpu_to_be16(0xFFFF);
+ memcpy(outbuf + offset, &be_namelen, sizeof(__be16));
+ offset += sizeof(__be16);
}
out:
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index 868e4c9ef12..ef2f1e35396 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -245,7 +245,8 @@ struct dlm_lkb {
struct list_head lkb_astqueue; /* need ast to be sent */
struct list_head lkb_ownqueue; /* list of locks for a process */
struct list_head lkb_time_list;
- unsigned long lkb_timestamp;
+ ktime_t lkb_time_bast; /* for debugging */
+ ktime_t lkb_timestamp;
unsigned long lkb_timeout_cs;
char *lkb_lvbptr;
@@ -481,6 +482,7 @@ struct dlm_ls {
struct dentry *ls_debug_rsb_dentry; /* debugfs */
struct dentry *ls_debug_waiters_dentry; /* debugfs */
struct dentry *ls_debug_locks_dentry; /* debugfs */
+ struct dentry *ls_debug_all_dentry; /* debugfs */
wait_queue_head_t ls_uevent_wait; /* user part of join/leave */
int ls_uevent_result;
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 724ddac9153..6cfe65bbf4a 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -307,7 +307,7 @@ static void queue_cast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rv)
lkb->lkb_lksb->sb_status = rv;
lkb->lkb_lksb->sb_flags = lkb->lkb_sbflags;
- dlm_add_ast(lkb, AST_COMP);
+ dlm_add_ast(lkb, AST_COMP, 0);
}
static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
@@ -318,12 +318,12 @@ static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
static void queue_bast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rqmode)
{
+ lkb->lkb_time_bast = ktime_get();
+
if (is_master_copy(lkb))
send_bast(r, lkb, rqmode);
- else {
- lkb->lkb_bastmode = rqmode;
- dlm_add_ast(lkb, AST_BAST);
- }
+ else
+ dlm_add_ast(lkb, AST_BAST, rqmode);
}
/*
@@ -744,6 +744,8 @@ static void add_lkb(struct dlm_rsb *r, struct dlm_lkb *lkb, int status)
DLM_ASSERT(!lkb->lkb_status, dlm_print_lkb(lkb););
+ lkb->lkb_timestamp = ktime_get();
+
lkb->lkb_status = status;
switch (status) {
@@ -1013,10 +1015,8 @@ static void add_timeout(struct dlm_lkb *lkb)
{
struct dlm_ls *ls = lkb->lkb_resource->res_ls;
- if (is_master_copy(lkb)) {
- lkb->lkb_timestamp = jiffies;
+ if (is_master_copy(lkb))
return;
- }
if (test_bit(LSFL_TIMEWARN, &ls->ls_flags) &&
!(lkb->lkb_exflags & DLM_LKF_NODLCKWT)) {
@@ -1031,7 +1031,6 @@ static void add_timeout(struct dlm_lkb *lkb)
DLM_ASSERT(list_empty(&lkb->lkb_time_list), dlm_print_lkb(lkb););
mutex_lock(&ls->ls_timeout_mutex);
hold_lkb(lkb);
- lkb->lkb_timestamp = jiffies;
list_add_tail(&lkb->lkb_time_list, &ls->ls_timeout);
mutex_unlock(&ls->ls_timeout_mutex);
}
@@ -1059,6 +1058,7 @@ void dlm_scan_timeout(struct dlm_ls *ls)
struct dlm_rsb *r;
struct dlm_lkb *lkb;
int do_cancel, do_warn;
+ s64 wait_us;
for (;;) {
if (dlm_locking_stopped(ls))
@@ -1069,14 +1069,15 @@ void dlm_scan_timeout(struct dlm_ls *ls)
mutex_lock(&ls->ls_timeout_mutex);
list_for_each_entry(lkb, &ls->ls_timeout, lkb_time_list) {
+ wait_us = ktime_to_us(ktime_sub(ktime_get(),
+ lkb->lkb_timestamp));
+
if ((lkb->lkb_exflags & DLM_LKF_TIMEOUT) &&
- time_after_eq(jiffies, lkb->lkb_timestamp +
- lkb->lkb_timeout_cs * HZ/100))
+ wait_us >= (lkb->lkb_timeout_cs * 10000))
do_cancel = 1;
if ((lkb->lkb_flags & DLM_IFL_WATCH_TIMEWARN) &&
- time_after_eq(jiffies, lkb->lkb_timestamp +
- dlm_config.ci_timewarn_cs * HZ/100))
+ wait_us >= dlm_config.ci_timewarn_cs * 10000)
do_warn = 1;
if (!do_cancel && !do_warn)
@@ -1122,12 +1123,12 @@ void dlm_scan_timeout(struct dlm_ls *ls)
void dlm_adjust_timeouts(struct dlm_ls *ls)
{
struct dlm_lkb *lkb;
- long adj = jiffies - ls->ls_recover_begin;
+ u64 adj_us = jiffies_to_usecs(jiffies - ls->ls_recover_begin);
ls->ls_recover_begin = 0;
mutex_lock(&ls->ls_timeout_mutex);
list_for_each_entry(lkb, &ls->ls_timeout, lkb_time_list)
- lkb->lkb_timestamp += adj;
+ lkb->lkb_timestamp = ktime_add_us(lkb->lkb_timestamp, adj_us);
mutex_unlock(&ls->ls_timeout_mutex);
}
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 3962262f991..103a5ebd137 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -295,6 +295,7 @@ static int add_sock(struct socket *sock, struct connection *con)
con->sock->sk->sk_write_space = lowcomms_write_space;
con->sock->sk->sk_state_change = lowcomms_state_change;
con->sock->sk->sk_user_data = con;
+ con->sock->sk->sk_allocation = GFP_NOFS;
return 0;
}
@@ -823,7 +824,6 @@ static void sctp_init_assoc(struct connection *con)
len = e->len;
offset = e->offset;
spin_unlock(&con->writequeue_lock);
- kmap(e->page);
/* Send the first block off the write queue */
iov[0].iov_base = page_address(e->page)+offset;
@@ -854,7 +854,6 @@ static void sctp_init_assoc(struct connection *con)
if (e->len == 0 && e->users == 0) {
list_del(&e->list);
- kunmap(e->page);
free_entry(e);
}
spin_unlock(&con->writequeue_lock);
@@ -1203,8 +1202,6 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc)
if (e) {
got_one:
- if (users == 0)
- kmap(e->page);
*ppc = page_address(e->page) + offset;
return e;
}
@@ -1233,7 +1230,6 @@ void dlm_lowcomms_commit_buffer(void *mh)
if (users)
goto out;
e->len = e->end - e->offset;
- kunmap(e->page);
spin_unlock(&con->writequeue_lock);
if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags)) {
@@ -1272,7 +1268,6 @@ static void send_to_sock(struct connection *con)
offset = e->offset;
BUG_ON(len == 0 && e->users == 0);
spin_unlock(&con->writequeue_lock);
- kmap(e->page);
ret = 0;
if (len) {
@@ -1294,7 +1289,6 @@ static void send_to_sock(struct connection *con)
if (e->len == 0 && e->users == 0) {
list_del(&e->list);
- kunmap(e->page);
free_entry(e);
continue;
}
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index 54c14c6d06c..c1775b84eba 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -39,7 +39,7 @@ char *dlm_allocate_lvb(struct dlm_ls *ls)
{
char *p;
- p = kzalloc(ls->ls_lvblen, GFP_KERNEL);
+ p = kzalloc(ls->ls_lvblen, ls->ls_allocation);
return p;
}
@@ -57,7 +57,7 @@ struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen)
DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
- r = kzalloc(sizeof(*r) + namelen, GFP_KERNEL);
+ r = kzalloc(sizeof(*r) + namelen, ls->ls_allocation);
return r;
}
@@ -72,7 +72,7 @@ struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
{
struct dlm_lkb *lkb;
- lkb = kmem_cache_zalloc(lkb_cache, GFP_KERNEL);
+ lkb = kmem_cache_zalloc(lkb_cache, ls->ls_allocation);
return lkb;
}
diff --git a/fs/dlm/midcomms.c b/fs/dlm/midcomms.c
index 07ac709f3ed..f3396c622ae 100644
--- a/fs/dlm/midcomms.c
+++ b/fs/dlm/midcomms.c
@@ -112,7 +112,7 @@ int dlm_process_incoming_buffer(int nodeid, const void *base,
ordinary messages). */
if (msglen > sizeof(__tmp) && p == &__tmp.p) {
- p = kmalloc(dlm_config.ci_buffer_size, GFP_KERNEL);
+ p = kmalloc(dlm_config.ci_buffer_size, GFP_NOFS);
if (p == NULL)
return ret;
}
diff --git a/fs/dlm/netlink.c b/fs/dlm/netlink.c
index aa2a5775a02..ccc9d62c462 100644
--- a/fs/dlm/netlink.c
+++ b/fs/dlm/netlink.c
@@ -115,7 +115,6 @@ static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb)
data->status = lkb->lkb_status;
data->grmode = lkb->lkb_grmode;
data->rqmode = lkb->lkb_rqmode;
- data->timestamp = lkb->lkb_timestamp;
if (lkb->lkb_ua)
data->xid = lkb->lkb_ua->xid;
if (r) {
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index b3832c67194..065149e84f4 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -175,7 +175,7 @@ static int lkb_is_endoflife(struct dlm_lkb *lkb, int sb_status, int type)
/* we could possibly check if the cancel of an orphan has resulted in the lkb
being removed and then remove that lkb from the orphans list and free it */
-void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
+void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
{
struct dlm_ls *ls;
struct dlm_user_args *ua;
@@ -208,6 +208,8 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
ast_type = lkb->lkb_ast_type;
lkb->lkb_ast_type |= type;
+ if (bastmode)
+ lkb->lkb_bastmode = bastmode;
if (!ast_type) {
kref_get(&lkb->lkb_ref);
diff --git a/fs/dlm/user.h b/fs/dlm/user.h
index 35eb6a13d61..1c968649228 100644
--- a/fs/dlm/user.h
+++ b/fs/dlm/user.h
@@ -9,7 +9,7 @@
#ifndef __USER_DOT_H__
#define __USER_DOT_H__
-void dlm_user_add_ast(struct dlm_lkb *lkb, int type);
+void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode);
int dlm_user_init(void);
void dlm_user_exit(void);
int dlm_device_deregister(struct dlm_ls *ls);
diff --git a/fs/dquot.c b/fs/dquot.c
index c237ccc8581..48c0571f831 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -211,8 +211,6 @@ static struct hlist_head *dquot_hash;
struct dqstats dqstats;
-static void dqput(struct dquot *dquot);
-
static inline unsigned int
hashfn(const struct super_block *sb, unsigned int id, int type)
{
@@ -415,6 +413,17 @@ out_dqlock:
return ret;
}
+void dquot_destroy(struct dquot *dquot)
+{
+ kmem_cache_free(dquot_cachep, dquot);
+}
+EXPORT_SYMBOL(dquot_destroy);
+
+static inline void do_destroy_dquot(struct dquot *dquot)
+{
+ dquot->dq_sb->dq_op->destroy_dquot(dquot);
+}
+
/* Invalidate all dquots on the list. Note that this function is called after
* quota is disabled and pointers from inodes removed so there cannot be new
* quota users. There can still be some users of quotas due to inodes being
@@ -463,9 +472,44 @@ restart:
remove_dquot_hash(dquot);
remove_free_dquot(dquot);
remove_inuse(dquot);
- kmem_cache_free(dquot_cachep, dquot);
+ do_destroy_dquot(dquot);
+ }
+ spin_unlock(&dq_list_lock);
+}
+
+/* Call callback for every active dquot on given filesystem */
+int dquot_scan_active(struct super_block *sb,
+ int (*fn)(struct dquot *dquot, unsigned long priv),
+ unsigned long priv)
+{
+ struct dquot *dquot, *old_dquot = NULL;
+ int ret = 0;
+
+ mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
+ spin_lock(&dq_list_lock);
+ list_for_each_entry(dquot, &inuse_list, dq_inuse) {
+ if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags))
+ continue;
+ if (dquot->dq_sb != sb)
+ continue;
+ /* Now we have active dquot so we can just increase use count */
+ atomic_inc(&dquot->dq_count);
+ dqstats.lookups++;
+ spin_unlock(&dq_list_lock);
+ dqput(old_dquot);
+ old_dquot = dquot;
+ ret = fn(dquot, priv);
+ if (ret < 0)
+ goto out;
+ spin_lock(&dq_list_lock);
+ /* We are safe to continue now because our dquot could not
+ * be moved out of the inuse list while we hold the reference */
}
spin_unlock(&dq_list_lock);
+out:
+ dqput(old_dquot);
+ mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
+ return ret;
}
int vfs_quota_sync(struct super_block *sb, int type)
@@ -479,7 +523,7 @@ int vfs_quota_sync(struct super_block *sb, int type)
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (type != -1 && cnt != type)
continue;
- if (!sb_has_quota_enabled(sb, cnt))
+ if (!sb_has_quota_active(sb, cnt))
continue;
spin_lock(&dq_list_lock);
dirty = &dqopt->info[cnt].dqi_dirty_list;
@@ -504,8 +548,8 @@ int vfs_quota_sync(struct super_block *sb, int type)
}
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if ((cnt == type || type == -1) && sb_has_quota_enabled(sb, cnt)
- && info_dirty(&dqopt->info[cnt]))
+ if ((cnt == type || type == -1) && sb_has_quota_active(sb, cnt)
+ && info_dirty(&dqopt->info[cnt]))
sb->dq_op->write_info(sb, cnt);
spin_lock(&dq_list_lock);
dqstats.syncs++;
@@ -527,7 +571,7 @@ static void prune_dqcache(int count)
remove_dquot_hash(dquot);
remove_free_dquot(dquot);
remove_inuse(dquot);
- kmem_cache_free(dquot_cachep, dquot);
+ do_destroy_dquot(dquot);
count--;
head = free_dquots.prev;
}
@@ -558,7 +602,7 @@ static struct shrinker dqcache_shrinker = {
* NOTE: If you change this function please check whether dqput_blocks() works right...
* MUST be called with either dqptr_sem or dqonoff_mutex held
*/
-static void dqput(struct dquot *dquot)
+void dqput(struct dquot *dquot)
{
int ret;
@@ -584,7 +628,7 @@ we_slept:
/* We have more than one user... nothing to do */
atomic_dec(&dquot->dq_count);
/* Releasing dquot during quotaoff phase? */
- if (!sb_has_quota_enabled(dquot->dq_sb, dquot->dq_type) &&
+ if (!sb_has_quota_active(dquot->dq_sb, dquot->dq_type) &&
atomic_read(&dquot->dq_count) == 1)
wake_up(&dquot->dq_wait_unused);
spin_unlock(&dq_list_lock);
@@ -625,11 +669,17 @@ we_slept:
spin_unlock(&dq_list_lock);
}
+struct dquot *dquot_alloc(struct super_block *sb, int type)
+{
+ return kmem_cache_zalloc(dquot_cachep, GFP_NOFS);
+}
+EXPORT_SYMBOL(dquot_alloc);
+
static struct dquot *get_empty_dquot(struct super_block *sb, int type)
{
struct dquot *dquot;
- dquot = kmem_cache_zalloc(dquot_cachep, GFP_NOFS);
+ dquot = sb->dq_op->alloc_dquot(sb, type);
if(!dquot)
return NODQUOT;
@@ -647,15 +697,33 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type)
}
/*
+ * Check whether dquot is in memory.
+ * MUST be called with either dqptr_sem or dqonoff_mutex held
+ */
+int dquot_is_cached(struct super_block *sb, unsigned int id, int type)
+{
+ unsigned int hashent = hashfn(sb, id, type);
+ int ret = 0;
+
+ if (!sb_has_quota_active(sb, type))
+ return 0;
+ spin_lock(&dq_list_lock);
+ if (find_dquot(hashent, sb, id, type) != NODQUOT)
+ ret = 1;
+ spin_unlock(&dq_list_lock);
+ return ret;
+}
+
+/*
* Get reference to dquot
* MUST be called with either dqptr_sem or dqonoff_mutex held
*/
-static struct dquot *dqget(struct super_block *sb, unsigned int id, int type)
+struct dquot *dqget(struct super_block *sb, unsigned int id, int type)
{
unsigned int hashent = hashfn(sb, id, type);
struct dquot *dquot, *empty = NODQUOT;
- if (!sb_has_quota_enabled(sb, type))
+ if (!sb_has_quota_active(sb, type))
return NODQUOT;
we_slept:
spin_lock(&dq_list_lock);
@@ -682,7 +750,7 @@ we_slept:
dqstats.lookups++;
spin_unlock(&dq_list_lock);
if (empty)
- kmem_cache_free(dquot_cachep, empty);
+ do_destroy_dquot(empty);
}
/* Wait for dq_lock - after this we know that either dquot_release() is already
* finished or it will be canceled due to dq_count > 1 test */
@@ -820,7 +888,7 @@ static void drop_dquot_ref(struct super_block *sb, int type)
}
}
-static inline void dquot_incr_inodes(struct dquot *dquot, unsigned long number)
+static inline void dquot_incr_inodes(struct dquot *dquot, qsize_t number)
{
dquot->dq_dqb.dqb_curinodes += number;
}
@@ -830,9 +898,10 @@ static inline void dquot_incr_space(struct dquot *dquot, qsize_t number)
dquot->dq_dqb.dqb_curspace += number;
}
-static inline void dquot_decr_inodes(struct dquot *dquot, unsigned long number)
+static inline void dquot_decr_inodes(struct dquot *dquot, qsize_t number)
{
- if (dquot->dq_dqb.dqb_curinodes > number)
+ if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NEGATIVE_USAGE ||
+ dquot->dq_dqb.dqb_curinodes >= number)
dquot->dq_dqb.dqb_curinodes -= number;
else
dquot->dq_dqb.dqb_curinodes = 0;
@@ -843,11 +912,12 @@ static inline void dquot_decr_inodes(struct dquot *dquot, unsigned long number)
static inline void dquot_decr_space(struct dquot *dquot, qsize_t number)
{
- if (dquot->dq_dqb.dqb_curspace > number)
+ if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NEGATIVE_USAGE ||
+ dquot->dq_dqb.dqb_curspace >= number)
dquot->dq_dqb.dqb_curspace -= number;
else
dquot->dq_dqb.dqb_curspace = 0;
- if (toqb(dquot->dq_dqb.dqb_curspace) <= dquot->dq_dqb.dqb_bsoftlimit)
+ if (dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit)
dquot->dq_dqb.dqb_btime = (time_t) 0;
clear_bit(DQ_BLKS_B, &dquot->dq_flags);
}
@@ -1023,10 +1093,11 @@ static inline char ignore_hardlimit(struct dquot *dquot)
}
/* needs dq_data_lock */
-static int check_idq(struct dquot *dquot, ulong inodes, char *warntype)
+static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
{
*warntype = QUOTA_NL_NOWARN;
- if (inodes <= 0 || test_bit(DQ_FAKE_B, &dquot->dq_flags))
+ if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) ||
+ test_bit(DQ_FAKE_B, &dquot->dq_flags))
return QUOTA_OK;
if (dquot->dq_dqb.dqb_ihardlimit &&
@@ -1058,11 +1129,12 @@ static int check_idq(struct dquot *dquot, ulong inodes, char *warntype)
static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *warntype)
{
*warntype = QUOTA_NL_NOWARN;
- if (space <= 0 || test_bit(DQ_FAKE_B, &dquot->dq_flags))
+ if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) ||
+ test_bit(DQ_FAKE_B, &dquot->dq_flags))
return QUOTA_OK;
if (dquot->dq_dqb.dqb_bhardlimit &&
- toqb(dquot->dq_dqb.dqb_curspace + space) > dquot->dq_dqb.dqb_bhardlimit &&
+ dquot->dq_dqb.dqb_curspace + space > dquot->dq_dqb.dqb_bhardlimit &&
!ignore_hardlimit(dquot)) {
if (!prealloc)
*warntype = QUOTA_NL_BHARDWARN;
@@ -1070,7 +1142,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
}
if (dquot->dq_dqb.dqb_bsoftlimit &&
- toqb(dquot->dq_dqb.dqb_curspace + space) > dquot->dq_dqb.dqb_bsoftlimit &&
+ dquot->dq_dqb.dqb_curspace + space > dquot->dq_dqb.dqb_bsoftlimit &&
dquot->dq_dqb.dqb_btime && get_seconds() >= dquot->dq_dqb.dqb_btime &&
!ignore_hardlimit(dquot)) {
if (!prealloc)
@@ -1079,7 +1151,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
}
if (dquot->dq_dqb.dqb_bsoftlimit &&
- toqb(dquot->dq_dqb.dqb_curspace + space) > dquot->dq_dqb.dqb_bsoftlimit &&
+ dquot->dq_dqb.dqb_curspace + space > dquot->dq_dqb.dqb_bsoftlimit &&
dquot->dq_dqb.dqb_btime == 0) {
if (!prealloc) {
*warntype = QUOTA_NL_BSOFTWARN;
@@ -1096,10 +1168,11 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
return QUOTA_OK;
}
-static int info_idq_free(struct dquot *dquot, ulong inodes)
+static int info_idq_free(struct dquot *dquot, qsize_t inodes)
{
if (test_bit(DQ_FAKE_B, &dquot->dq_flags) ||
- dquot->dq_dqb.dqb_curinodes <= dquot->dq_dqb.dqb_isoftlimit)
+ dquot->dq_dqb.dqb_curinodes <= dquot->dq_dqb.dqb_isoftlimit ||
+ !sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type))
return QUOTA_NL_NOWARN;
if (dquot->dq_dqb.dqb_curinodes - inodes <= dquot->dq_dqb.dqb_isoftlimit)
@@ -1113,15 +1186,13 @@ static int info_idq_free(struct dquot *dquot, ulong inodes)
static int info_bdq_free(struct dquot *dquot, qsize_t space)
{
if (test_bit(DQ_FAKE_B, &dquot->dq_flags) ||
- toqb(dquot->dq_dqb.dqb_curspace) <= dquot->dq_dqb.dqb_bsoftlimit)
+ dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit)
return QUOTA_NL_NOWARN;
- if (toqb(dquot->dq_dqb.dqb_curspace - space) <=
- dquot->dq_dqb.dqb_bsoftlimit)
+ if (dquot->dq_dqb.dqb_curspace - space <= dquot->dq_dqb.dqb_bsoftlimit)
return QUOTA_NL_BSOFTBELOW;
- if (toqb(dquot->dq_dqb.dqb_curspace) >= dquot->dq_dqb.dqb_bhardlimit &&
- toqb(dquot->dq_dqb.dqb_curspace - space) <
- dquot->dq_dqb.dqb_bhardlimit)
+ if (dquot->dq_dqb.dqb_curspace >= dquot->dq_dqb.dqb_bhardlimit &&
+ dquot->dq_dqb.dqb_curspace - space < dquot->dq_dqb.dqb_bhardlimit)
return QUOTA_NL_BHARDBELOW;
return QUOTA_NL_NOWARN;
}
@@ -1166,17 +1237,23 @@ out_err:
* Release all quotas referenced by inode
* Transaction must be started at an entry
*/
-int dquot_drop(struct inode *inode)
+int dquot_drop_locked(struct inode *inode)
{
int cnt;
- down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (inode->i_dquot[cnt] != NODQUOT) {
dqput(inode->i_dquot[cnt]);
inode->i_dquot[cnt] = NODQUOT;
}
}
+ return 0;
+}
+
+int dquot_drop(struct inode *inode)
+{
+ down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
+ dquot_drop_locked(inode);
up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
return 0;
}
@@ -1264,7 +1341,7 @@ warn_put_all:
/*
* This operation can block, but only after everything is updated
*/
-int dquot_alloc_inode(const struct inode *inode, unsigned long number)
+int dquot_alloc_inode(const struct inode *inode, qsize_t number)
{
int cnt, ret = NO_QUOTA;
char warntype[MAXQUOTAS];
@@ -1349,7 +1426,7 @@ out_sub:
/*
* This operation can block, but only after everything is updated
*/
-int dquot_free_inode(const struct inode *inode, unsigned long number)
+int dquot_free_inode(const struct inode *inode, qsize_t number)
{
unsigned int cnt;
char warntype[MAXQUOTAS];
@@ -1495,7 +1572,7 @@ warn_put_all:
/* Wrapper for transferring ownership of an inode */
int vfs_dq_transfer(struct inode *inode, struct iattr *iattr)
{
- if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {
+ if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode)) {
vfs_dq_init(inode);
if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA)
return 1;
@@ -1533,54 +1610,27 @@ struct dquot_operations dquot_operations = {
.acquire_dquot = dquot_acquire,
.release_dquot = dquot_release,
.mark_dirty = dquot_mark_dquot_dirty,
- .write_info = dquot_commit_info
+ .write_info = dquot_commit_info,
+ .alloc_dquot = dquot_alloc,
+ .destroy_dquot = dquot_destroy,
};
-static inline void set_enable_flags(struct quota_info *dqopt, int type)
-{
- switch (type) {
- case USRQUOTA:
- dqopt->flags |= DQUOT_USR_ENABLED;
- dqopt->flags &= ~DQUOT_USR_SUSPENDED;
- break;
- case GRPQUOTA:
- dqopt->flags |= DQUOT_GRP_ENABLED;
- dqopt->flags &= ~DQUOT_GRP_SUSPENDED;
- break;
- }
-}
-
-static inline void reset_enable_flags(struct quota_info *dqopt, int type,
- int remount)
-{
- switch (type) {
- case USRQUOTA:
- dqopt->flags &= ~DQUOT_USR_ENABLED;
- if (remount)
- dqopt->flags |= DQUOT_USR_SUSPENDED;
- else
- dqopt->flags &= ~DQUOT_USR_SUSPENDED;
- break;
- case GRPQUOTA:
- dqopt->flags &= ~DQUOT_GRP_ENABLED;
- if (remount)
- dqopt->flags |= DQUOT_GRP_SUSPENDED;
- else
- dqopt->flags &= ~DQUOT_GRP_SUSPENDED;
- break;
- }
-}
-
-
/*
* Turn quota off on a device. type == -1 ==> quotaoff for all types (umount)
*/
-int vfs_quota_off(struct super_block *sb, int type, int remount)
+int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags)
{
int cnt, ret = 0;
struct quota_info *dqopt = sb_dqopt(sb);
struct inode *toputinode[MAXQUOTAS];
+ /* Cannot turn off usage accounting without turning off limits, or
+ * suspend quotas and simultaneously turn quotas off. */
+ if ((flags & DQUOT_USAGE_ENABLED && !(flags & DQUOT_LIMITS_ENABLED))
+ || (flags & DQUOT_SUSPENDED && flags & (DQUOT_LIMITS_ENABLED |
+ DQUOT_USAGE_ENABLED)))
+ return -EINVAL;
+
/* We need to serialize quota_off() for device */
mutex_lock(&dqopt->dqonoff_mutex);
@@ -1589,7 +1639,7 @@ int vfs_quota_off(struct super_block *sb, int type, int remount)
* sometimes we are called when fill_super() failed and calling
* sync_fs() in such cases does no good.
*/
- if (!sb_any_quota_enabled(sb) && !sb_any_quota_suspended(sb)) {
+ if (!sb_any_quota_loaded(sb)) {
mutex_unlock(&dqopt->dqonoff_mutex);
return 0;
}
@@ -1597,17 +1647,28 @@ int vfs_quota_off(struct super_block *sb, int type, int remount)
toputinode[cnt] = NULL;
if (type != -1 && cnt != type)
continue;
- /* If we keep inodes of quota files after remount and quotaoff
- * is called, drop kept inodes. */
- if (!remount && sb_has_quota_suspended(sb, cnt)) {
- iput(dqopt->files[cnt]);
- dqopt->files[cnt] = NULL;
- reset_enable_flags(dqopt, cnt, 0);
+ if (!sb_has_quota_loaded(sb, cnt))
continue;
+
+ if (flags & DQUOT_SUSPENDED) {
+ dqopt->flags |=
+ dquot_state_flag(DQUOT_SUSPENDED, cnt);
+ } else {
+ dqopt->flags &= ~dquot_state_flag(flags, cnt);
+ /* Turning off suspended quotas? */
+ if (!sb_has_quota_loaded(sb, cnt) &&
+ sb_has_quota_suspended(sb, cnt)) {
+ dqopt->flags &= ~dquot_state_flag(
+ DQUOT_SUSPENDED, cnt);
+ iput(dqopt->files[cnt]);
+ dqopt->files[cnt] = NULL;
+ continue;
+ }
}
- if (!sb_has_quota_enabled(sb, cnt))
+
+ /* We still have to keep quota loaded? */
+ if (sb_has_quota_loaded(sb, cnt) && !(flags & DQUOT_SUSPENDED))
continue;
- reset_enable_flags(dqopt, cnt, remount);
/* Note: these are blocking operations */
drop_dquot_ref(sb, cnt);
@@ -1623,7 +1684,7 @@ int vfs_quota_off(struct super_block *sb, int type, int remount)
put_quota_format(dqopt->info[cnt].dqi_format);
toputinode[cnt] = dqopt->files[cnt];
- if (!remount)
+ if (!sb_has_quota_loaded(sb, cnt))
dqopt->files[cnt] = NULL;
dqopt->info[cnt].dqi_flags = 0;
dqopt->info[cnt].dqi_igrace = 0;
@@ -1631,6 +1692,11 @@ int vfs_quota_off(struct super_block *sb, int type, int remount)
dqopt->ops[cnt] = NULL;
}
mutex_unlock(&dqopt->dqonoff_mutex);
+
+ /* Skip syncing and setting flags if quota files are hidden */
+ if (dqopt->flags & DQUOT_QUOTA_SYS_FILE)
+ goto put_inodes;
+
/* Sync the superblock so that buffers with quota data are written to
* disk (and so userspace sees correct data afterwards). */
if (sb->s_op->sync_fs)
@@ -1646,7 +1712,7 @@ int vfs_quota_off(struct super_block *sb, int type, int remount)
mutex_lock(&dqopt->dqonoff_mutex);
/* If quota was reenabled in the meantime, we have
* nothing to do */
- if (!sb_has_quota_enabled(sb, cnt)) {
+ if (!sb_has_quota_loaded(sb, cnt)) {
mutex_lock_nested(&toputinode[cnt]->i_mutex, I_MUTEX_QUOTA);
toputinode[cnt]->i_flags &= ~(S_IMMUTABLE |
S_NOATIME | S_NOQUOTA);
@@ -1655,26 +1721,43 @@ int vfs_quota_off(struct super_block *sb, int type, int remount)
mark_inode_dirty(toputinode[cnt]);
}
mutex_unlock(&dqopt->dqonoff_mutex);
+ }
+ if (sb->s_bdev)
+ invalidate_bdev(sb->s_bdev);
+put_inodes:
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++)
+ if (toputinode[cnt]) {
/* On remount RO, we keep the inode pointer so that we
- * can reenable quota on the subsequent remount RW.
- * But we have better not keep inode pointer when there
- * is pending delete on the quota file... */
- if (!remount)
+ * can reenable quota on the subsequent remount RW. We
+ * have to check 'flags' variable and not use sb_has_
+ * function because another quotaon / quotaoff could
+ * change global state before we got here. We refuse
+ * to suspend quotas when there is pending delete on
+ * the quota file... */
+ if (!(flags & DQUOT_SUSPENDED))
iput(toputinode[cnt]);
else if (!toputinode[cnt]->i_nlink)
ret = -EBUSY;
}
- if (sb->s_bdev)
- invalidate_bdev(sb->s_bdev);
return ret;
}
+int vfs_quota_off(struct super_block *sb, int type, int remount)
+{
+ return vfs_quota_disable(sb, type, remount ? DQUOT_SUSPENDED :
+ (DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED));
+}
+
/*
* Turn quotas on on a device
*/
-/* Helper function when we already have the inode */
-static int vfs_quota_on_inode(struct inode *inode, int type, int format_id)
+/*
+ * Helper function to turn quotas on when we already have the inode of
+ * quota file and no quota information is loaded.
+ */
+static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
+ unsigned int flags)
{
struct quota_format_type *fmt = find_quota_format(format_id);
struct super_block *sb = inode->i_sb;
@@ -1696,27 +1779,37 @@ static int vfs_quota_on_inode(struct inode *inode, int type, int format_id)
error = -EINVAL;
goto out_fmt;
}
+ /* Usage always has to be set... */
+ if (!(flags & DQUOT_USAGE_ENABLED)) {
+ error = -EINVAL;
+ goto out_fmt;
+ }
- /* As we bypass the pagecache we must now flush the inode so that
- * we see all the changes from userspace... */
- write_inode_now(inode, 1);
- /* And now flush the block cache so that kernel sees the changes */
- invalidate_bdev(sb->s_bdev);
+ if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) {
+ /* As we bypass the pagecache we must now flush the inode so
+ * that we see all the changes from userspace... */
+ write_inode_now(inode, 1);
+ /* And now flush the block cache so that kernel sees the
+ * changes */
+ invalidate_bdev(sb->s_bdev);
+ }
mutex_lock(&inode->i_mutex);
mutex_lock(&dqopt->dqonoff_mutex);
- if (sb_has_quota_enabled(sb, type) ||
- sb_has_quota_suspended(sb, type)) {
+ if (sb_has_quota_loaded(sb, type)) {
error = -EBUSY;
goto out_lock;
}
- /* We don't want quota and atime on quota files (deadlocks possible)
- * Also nobody should write to the file - we use special IO operations
- * which ignore the immutable bit. */
- down_write(&dqopt->dqptr_sem);
- oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE | S_NOQUOTA);
- inode->i_flags |= S_NOQUOTA | S_NOATIME | S_IMMUTABLE;
- up_write(&dqopt->dqptr_sem);
- sb->dq_op->drop(inode);
+
+ if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) {
+ /* We don't want quota and atime on quota files (deadlocks
+ * possible) Also nobody should write to the file - we use
+ * special IO operations which ignore the immutable bit. */
+ down_write(&dqopt->dqptr_sem);
+ oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE | S_NOQUOTA);
+ inode->i_flags |= S_NOQUOTA | S_NOATIME | S_IMMUTABLE;
+ up_write(&dqopt->dqptr_sem);
+ sb->dq_op->drop(inode);
+ }
error = -EIO;
dqopt->files[type] = igrab(inode);
@@ -1737,7 +1830,7 @@ static int vfs_quota_on_inode(struct inode *inode, int type, int format_id)
}
mutex_unlock(&dqopt->dqio_mutex);
mutex_unlock(&inode->i_mutex);
- set_enable_flags(dqopt, type);
+ dqopt->flags |= dquot_state_flag(flags, type);
add_dquot_ref(sb, type);
mutex_unlock(&dqopt->dqonoff_mutex);
@@ -1770,20 +1863,23 @@ static int vfs_quota_on_remount(struct super_block *sb, int type)
struct quota_info *dqopt = sb_dqopt(sb);
struct inode *inode;
int ret;
+ unsigned int flags;
mutex_lock(&dqopt->dqonoff_mutex);
if (!sb_has_quota_suspended(sb, type)) {
mutex_unlock(&dqopt->dqonoff_mutex);
return 0;
}
- BUG_ON(sb_has_quota_enabled(sb, type));
-
inode = dqopt->files[type];
dqopt->files[type] = NULL;
- reset_enable_flags(dqopt, type, 0);
+ flags = dqopt->flags & dquot_state_flag(DQUOT_USAGE_ENABLED |
+ DQUOT_LIMITS_ENABLED, type);
+ dqopt->flags &= ~dquot_state_flag(DQUOT_STATE_FLAGS, type);
mutex_unlock(&dqopt->dqonoff_mutex);
- ret = vfs_quota_on_inode(inode, type, dqopt->info[type].dqi_fmt_id);
+ flags = dquot_generic_flag(flags, type);
+ ret = vfs_load_quota_inode(inode, type, dqopt->info[type].dqi_fmt_id,
+ flags);
iput(inode);
return ret;
@@ -1799,12 +1895,12 @@ int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
if (path->mnt->mnt_sb != sb)
error = -EXDEV;
else
- error = vfs_quota_on_inode(path->dentry->d_inode, type,
- format_id);
+ error = vfs_load_quota_inode(path->dentry->d_inode, type,
+ format_id, DQUOT_USAGE_ENABLED |
+ DQUOT_LIMITS_ENABLED);
return error;
}
-/* Actual function called from quotactl() */
int vfs_quota_on(struct super_block *sb, int type, int format_id, char *name,
int remount)
{
@@ -1823,6 +1919,50 @@ int vfs_quota_on(struct super_block *sb, int type, int format_id, char *name,
}
/*
+ * More powerful function for turning on quotas allowing setting
+ * of individual quota flags
+ */
+int vfs_quota_enable(struct inode *inode, int type, int format_id,
+ unsigned int flags)
+{
+ int ret = 0;
+ struct super_block *sb = inode->i_sb;
+ struct quota_info *dqopt = sb_dqopt(sb);
+
+ /* Just unsuspend quotas? */
+ if (flags & DQUOT_SUSPENDED)
+ return vfs_quota_on_remount(sb, type);
+ if (!flags)
+ return 0;
+ /* Just updating flags needed? */
+ if (sb_has_quota_loaded(sb, type)) {
+ mutex_lock(&dqopt->dqonoff_mutex);
+ /* Now do a reliable test... */
+ if (!sb_has_quota_loaded(sb, type)) {
+ mutex_unlock(&dqopt->dqonoff_mutex);
+ goto load_quota;
+ }
+ if (flags & DQUOT_USAGE_ENABLED &&
+ sb_has_quota_usage_enabled(sb, type)) {
+ ret = -EBUSY;
+ goto out_lock;
+ }
+ if (flags & DQUOT_LIMITS_ENABLED &&
+ sb_has_quota_limits_enabled(sb, type)) {
+ ret = -EBUSY;
+ goto out_lock;
+ }
+ sb_dqopt(sb)->flags |= dquot_state_flag(flags, type);
+out_lock:
+ mutex_unlock(&dqopt->dqonoff_mutex);
+ return ret;
+ }
+
+load_quota:
+ return vfs_load_quota_inode(inode, type, format_id, flags);
+}
+
+/*
* This function is used when filesystem needs to initialize quotas
* during mount time.
*/
@@ -1843,7 +1983,8 @@ int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
error = security_quota_on(dentry);
if (!error)
- error = vfs_quota_on_inode(dentry->d_inode, type, format_id);
+ error = vfs_load_quota_inode(dentry->d_inode, type, format_id,
+ DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
out:
dput(dentry);
@@ -1866,14 +2007,24 @@ int vfs_dq_quota_on_remount(struct super_block *sb)
return ret;
}
+static inline qsize_t qbtos(qsize_t blocks)
+{
+ return blocks << QIF_DQBLKSIZE_BITS;
+}
+
+static inline qsize_t stoqb(qsize_t space)
+{
+ return (space + QIF_DQBLKSIZE - 1) >> QIF_DQBLKSIZE_BITS;
+}
+
/* Generic routine for getting common part of quota structure */
static void do_get_dqblk(struct dquot *dquot, struct if_dqblk *di)
{
struct mem_dqblk *dm = &dquot->dq_dqb;
spin_lock(&dq_data_lock);
- di->dqb_bhardlimit = dm->dqb_bhardlimit;
- di->dqb_bsoftlimit = dm->dqb_bsoftlimit;
+ di->dqb_bhardlimit = stoqb(dm->dqb_bhardlimit);
+ di->dqb_bsoftlimit = stoqb(dm->dqb_bsoftlimit);
di->dqb_curspace = dm->dqb_curspace;
di->dqb_ihardlimit = dm->dqb_ihardlimit;
di->dqb_isoftlimit = dm->dqb_isoftlimit;
@@ -1918,28 +2069,38 @@ static int do_set_dqblk(struct dquot *dquot, struct if_dqblk *di)
if (di->dqb_valid & QIF_SPACE) {
dm->dqb_curspace = di->dqb_curspace;
check_blim = 1;
+ __set_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags);
}
if (di->dqb_valid & QIF_BLIMITS) {
- dm->dqb_bsoftlimit = di->dqb_bsoftlimit;
- dm->dqb_bhardlimit = di->dqb_bhardlimit;
+ dm->dqb_bsoftlimit = qbtos(di->dqb_bsoftlimit);
+ dm->dqb_bhardlimit = qbtos(di->dqb_bhardlimit);
check_blim = 1;
+ __set_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags);
}
if (di->dqb_valid & QIF_INODES) {
dm->dqb_curinodes = di->dqb_curinodes;
check_ilim = 1;
+ __set_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags);
}
if (di->dqb_valid & QIF_ILIMITS) {
dm->dqb_isoftlimit = di->dqb_isoftlimit;
dm->dqb_ihardlimit = di->dqb_ihardlimit;
check_ilim = 1;
+ __set_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags);
}
- if (di->dqb_valid & QIF_BTIME)
+ if (di->dqb_valid & QIF_BTIME) {
dm->dqb_btime = di->dqb_btime;
- if (di->dqb_valid & QIF_ITIME)
+ check_blim = 1;
+ __set_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags);
+ }
+ if (di->dqb_valid & QIF_ITIME) {
dm->dqb_itime = di->dqb_itime;
+ check_ilim = 1;
+ __set_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags);
+ }
if (check_blim) {
- if (!dm->dqb_bsoftlimit || toqb(dm->dqb_curspace) < dm->dqb_bsoftlimit) {
+ if (!dm->dqb_bsoftlimit || dm->dqb_curspace < dm->dqb_bsoftlimit) {
dm->dqb_btime = 0;
clear_bit(DQ_BLKS_B, &dquot->dq_flags);
}
@@ -1970,12 +2131,14 @@ int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *d
int rc;
mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
- if (!(dquot = dqget(sb, id, type))) {
- mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
- return -ESRCH;
+ dquot = dqget(sb, id, type);
+ if (!dquot) {
+ rc = -ESRCH;
+ goto out;
}
rc = do_set_dqblk(dquot, di);
dqput(dquot);
+out:
mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
return rc;
}
@@ -1986,7 +2149,7 @@ int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
struct mem_dqinfo *mi;
mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
- if (!sb_has_quota_enabled(sb, type)) {
+ if (!sb_has_quota_active(sb, type)) {
mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
return -ESRCH;
}
@@ -2005,11 +2168,12 @@ int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
{
struct mem_dqinfo *mi;
+ int err = 0;
mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
- if (!sb_has_quota_enabled(sb, type)) {
- mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
- return -ESRCH;
+ if (!sb_has_quota_active(sb, type)) {
+ err = -ESRCH;
+ goto out;
}
mi = sb_dqopt(sb)->info + type;
spin_lock(&dq_data_lock);
@@ -2023,8 +2187,9 @@ int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
mark_info_dirty(sb, type);
/* Force write to disk */
sb->dq_op->write_info(sb, type);
+out:
mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
- return 0;
+ return err;
}
struct quotactl_ops vfs_quotactl_ops = {
@@ -2186,10 +2351,13 @@ EXPORT_SYMBOL(register_quota_format);
EXPORT_SYMBOL(unregister_quota_format);
EXPORT_SYMBOL(dqstats);
EXPORT_SYMBOL(dq_data_lock);
+EXPORT_SYMBOL(vfs_quota_enable);
EXPORT_SYMBOL(vfs_quota_on);
EXPORT_SYMBOL(vfs_quota_on_path);
EXPORT_SYMBOL(vfs_quota_on_mount);
+EXPORT_SYMBOL(vfs_quota_disable);
EXPORT_SYMBOL(vfs_quota_off);
+EXPORT_SYMBOL(dquot_scan_active);
EXPORT_SYMBOL(vfs_quota_sync);
EXPORT_SYMBOL(vfs_get_dqinfo);
EXPORT_SYMBOL(vfs_set_dqinfo);
@@ -2202,7 +2370,11 @@ EXPORT_SYMBOL(dquot_release);
EXPORT_SYMBOL(dquot_mark_dquot_dirty);
EXPORT_SYMBOL(dquot_initialize);
EXPORT_SYMBOL(dquot_drop);
+EXPORT_SYMBOL(dquot_drop_locked);
EXPORT_SYMBOL(vfs_dq_drop);
+EXPORT_SYMBOL(dqget);
+EXPORT_SYMBOL(dqput);
+EXPORT_SYMBOL(dquot_is_cached);
EXPORT_SYMBOL(dquot_alloc_space);
EXPORT_SYMBOL(dquot_alloc_inode);
EXPORT_SYMBOL(dquot_free_space);
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index 6046239465a..c01e043670e 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -175,8 +175,8 @@ out:
*
* Returns zero on success; non-zero on error.
*/
-static int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat,
- loff_t offset)
+int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat,
+ loff_t offset)
{
int rc = 0;
char dst[MD5_DIGEST_SIZE];
@@ -924,6 +924,15 @@ static void ecryptfs_copy_mount_wide_flags_to_inode_flags(
crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR;
if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED)
crypt_stat->flags |= ECRYPTFS_VIEW_AS_ENCRYPTED;
+ if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES) {
+ crypt_stat->flags |= ECRYPTFS_ENCRYPT_FILENAMES;
+ if (mount_crypt_stat->flags
+ & ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK)
+ crypt_stat->flags |= ECRYPTFS_ENCFN_USE_MOUNT_FNEK;
+ else if (mount_crypt_stat->flags
+ & ECRYPTFS_GLOBAL_ENCFN_USE_FEK)
+ crypt_stat->flags |= ECRYPTFS_ENCFN_USE_FEK;
+ }
}
static int ecryptfs_copy_mount_wide_sigs_to_inode_sigs(
@@ -1060,7 +1069,8 @@ struct ecryptfs_flag_map_elem {
static struct ecryptfs_flag_map_elem ecryptfs_flag_map[] = {
{0x00000001, ECRYPTFS_ENABLE_HMAC},
{0x00000002, ECRYPTFS_ENCRYPTED},
- {0x00000004, ECRYPTFS_METADATA_IN_XATTR}
+ {0x00000004, ECRYPTFS_METADATA_IN_XATTR},
+ {0x00000008, ECRYPTFS_ENCRYPT_FILENAMES}
};
/**
@@ -1149,19 +1159,20 @@ ecryptfs_cipher_code_str_map[] = {
/**
* ecryptfs_code_for_cipher_string
- * @crypt_stat: The cryptographic context
+ * @cipher_name: The string alias for the cipher
+ * @key_bytes: Length of key in bytes; used for AES code selection
*
* Returns zero on no match, or the cipher code on match
*/
-u8 ecryptfs_code_for_cipher_string(struct ecryptfs_crypt_stat *crypt_stat)
+u8 ecryptfs_code_for_cipher_string(char *cipher_name, size_t key_bytes)
{
int i;
u8 code = 0;
struct ecryptfs_cipher_code_str_map_elem *map =
ecryptfs_cipher_code_str_map;
- if (strcmp(crypt_stat->cipher, "aes") == 0) {
- switch (crypt_stat->key_size) {
+ if (strcmp(cipher_name, "aes") == 0) {
+ switch (key_bytes) {
case 16:
code = RFC2440_CIPHER_AES_128;
break;
@@ -1173,7 +1184,7 @@ u8 ecryptfs_code_for_cipher_string(struct ecryptfs_crypt_stat *crypt_stat)
}
} else {
for (i = 0; i < ARRAY_SIZE(ecryptfs_cipher_code_str_map); i++)
- if (strcmp(crypt_stat->cipher, map[i].cipher_str) == 0){
+ if (strcmp(cipher_name, map[i].cipher_str) == 0) {
code = map[i].cipher_code;
break;
}
@@ -1212,6 +1223,8 @@ int ecryptfs_read_and_validate_header_region(char *data,
&(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat);
int rc;
+ if (crypt_stat->extent_size == 0)
+ crypt_stat->extent_size = ECRYPTFS_DEFAULT_EXTENT_SIZE;
rc = ecryptfs_read_lower(data, 0, crypt_stat->extent_size,
ecryptfs_inode);
if (rc) {
@@ -1221,7 +1234,6 @@ int ecryptfs_read_and_validate_header_region(char *data,
}
if (!contains_ecryptfs_marker(data + ECRYPTFS_FILE_SIZE_BYTES)) {
rc = -EINVAL;
- ecryptfs_printk(KERN_DEBUG, "Valid marker not found\n");
}
out:
return rc;
@@ -1628,95 +1640,95 @@ out:
}
/**
- * ecryptfs_encode_filename - converts a plaintext file name to cipher text
- * @crypt_stat: The crypt_stat struct associated with the file anem to encode
- * @name: The plaintext name
- * @length: The length of the plaintext
- * @encoded_name: The encypted name
+ * ecryptfs_encrypt_filename - encrypt filename
*
- * Encrypts and encodes a filename into something that constitutes a
- * valid filename for a filesystem, with printable characters.
+ * CBC-encrypts the filename. We do not want to encrypt the same
+ * filename with the same key and IV, which may happen with hard
+ * links, so we prepend random bits to each filename.
*
- * We assume that we have a properly initialized crypto context,
- * pointed to by crypt_stat->tfm.
- *
- * TODO: Implement filename decoding and decryption here, in place of
- * memcpy. We are keeping the framework around for now to (1)
- * facilitate testing of the components needed to implement filename
- * encryption and (2) to provide a code base from which other
- * developers in the community can easily implement this feature.
- *
- * Returns the length of encoded filename; negative if error
+ * Returns zero on success; non-zero otherwise
*/
-int
-ecryptfs_encode_filename(struct ecryptfs_crypt_stat *crypt_stat,
- const char *name, int length, char **encoded_name)
+static int
+ecryptfs_encrypt_filename(struct ecryptfs_filename *filename,
+ struct ecryptfs_crypt_stat *crypt_stat,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat)
{
- int error = 0;
+ int rc = 0;
- (*encoded_name) = kmalloc(length + 2, GFP_KERNEL);
- if (!(*encoded_name)) {
- error = -ENOMEM;
+ filename->encrypted_filename = NULL;
+ filename->encrypted_filename_size = 0;
+ if ((crypt_stat && (crypt_stat->flags & ECRYPTFS_ENCFN_USE_MOUNT_FNEK))
+ || (mount_crypt_stat && (mount_crypt_stat->flags
+ & ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK))) {
+ size_t packet_size;
+ size_t remaining_bytes;
+
+ rc = ecryptfs_write_tag_70_packet(
+ NULL, NULL,
+ &filename->encrypted_filename_size,
+ mount_crypt_stat, NULL,
+ filename->filename_size);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to get packet "
+ "size for tag 72; rc = [%d]\n", __func__,
+ rc);
+ filename->encrypted_filename_size = 0;
+ goto out;
+ }
+ filename->encrypted_filename =
+ kmalloc(filename->encrypted_filename_size, GFP_KERNEL);
+ if (!filename->encrypted_filename) {
+ printk(KERN_ERR "%s: Out of memory whilst attempting "
+ "to kmalloc [%zd] bytes\n", __func__,
+ filename->encrypted_filename_size);
+ rc = -ENOMEM;
+ goto out;
+ }
+ remaining_bytes = filename->encrypted_filename_size;
+ rc = ecryptfs_write_tag_70_packet(filename->encrypted_filename,
+ &remaining_bytes,
+ &packet_size,
+ mount_crypt_stat,
+ filename->filename,
+ filename->filename_size);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to generate "
+ "tag 70 packet; rc = [%d]\n", __func__,
+ rc);
+ kfree(filename->encrypted_filename);
+ filename->encrypted_filename = NULL;
+ filename->encrypted_filename_size = 0;
+ goto out;
+ }
+ filename->encrypted_filename_size = packet_size;
+ } else {
+ printk(KERN_ERR "%s: No support for requested filename "
+ "encryption method in this release\n", __func__);
+ rc = -ENOTSUPP;
goto out;
}
- /* TODO: Filename encryption is a scheduled feature for a
- * future version of eCryptfs. This function is here only for
- * the purpose of providing a framework for other developers
- * to easily implement filename encryption. Hint: Replace this
- * memcpy() with a call to encrypt and encode the
- * filename, the set the length accordingly. */
- memcpy((void *)(*encoded_name), (void *)name, length);
- (*encoded_name)[length] = '\0';
- error = length + 1;
out:
- return error;
+ return rc;
}
-/**
- * ecryptfs_decode_filename - converts the cipher text name to plaintext
- * @crypt_stat: The crypt_stat struct associated with the file
- * @name: The filename in cipher text
- * @length: The length of the cipher text name
- * @decrypted_name: The plaintext name
- *
- * Decodes and decrypts the filename.
- *
- * We assume that we have a properly initialized crypto context,
- * pointed to by crypt_stat->tfm.
- *
- * TODO: Implement filename decoding and decryption here, in place of
- * memcpy. We are keeping the framework around for now to (1)
- * facilitate testing of the components needed to implement filename
- * encryption and (2) to provide a code base from which other
- * developers in the community can easily implement this feature.
- *
- * Returns the length of decoded filename; negative if error
- */
-int
-ecryptfs_decode_filename(struct ecryptfs_crypt_stat *crypt_stat,
- const char *name, int length, char **decrypted_name)
+static int ecryptfs_copy_filename(char **copied_name, size_t *copied_name_size,
+ const char *name, size_t name_size)
{
- int error = 0;
+ int rc = 0;
- (*decrypted_name) = kmalloc(length + 2, GFP_KERNEL);
- if (!(*decrypted_name)) {
- error = -ENOMEM;
+ (*copied_name) = kmalloc((name_size + 2), GFP_KERNEL);
+ if (!(*copied_name)) {
+ rc = -ENOMEM;
goto out;
}
- /* TODO: Filename encryption is a scheduled feature for a
- * future version of eCryptfs. This function is here only for
- * the purpose of providing a framework for other developers
- * to easily implement filename encryption. Hint: Replace this
- * memcpy() with a call to decode and decrypt the
- * filename, the set the length accordingly. */
- memcpy((void *)(*decrypted_name), (void *)name, length);
- (*decrypted_name)[length + 1] = '\0'; /* Only for convenience
+ memcpy((void *)(*copied_name), (void *)name, name_size);
+ (*copied_name)[(name_size)] = '\0'; /* Only for convenience
* in printing out the
* string in debug
* messages */
- error = length;
+ (*copied_name_size) = (name_size + 1);
out:
- return error;
+ return rc;
}
/**
@@ -1740,7 +1752,7 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm,
*key_tfm = NULL;
if (*key_size > ECRYPTFS_MAX_KEY_BYTES) {
rc = -EINVAL;
- printk(KERN_ERR "Requested key size is [%Zd] bytes; maximum "
+ printk(KERN_ERR "Requested key size is [%zd] bytes; maximum "
"allowable is [%d]\n", *key_size, ECRYPTFS_MAX_KEY_BYTES);
goto out;
}
@@ -1765,7 +1777,7 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm,
get_random_bytes(dummy_key, *key_size);
rc = crypto_blkcipher_setkey(*key_tfm, dummy_key, *key_size);
if (rc) {
- printk(KERN_ERR "Error attempting to set key of size [%Zd] for "
+ printk(KERN_ERR "Error attempting to set key of size [%zd] for "
"cipher [%s]; rc = [%d]\n", *key_size, cipher_name, rc);
rc = -EINVAL;
goto out;
@@ -1910,3 +1922,341 @@ out:
mutex_unlock(&key_tfm_list_mutex);
return rc;
}
+
+/* 64 characters forming a 6-bit target field */
+static unsigned char *portable_filename_chars = ("-.0123456789ABCD"
+ "EFGHIJKLMNOPQRST"
+ "UVWXYZabcdefghij"
+ "klmnopqrstuvwxyz");
+
+/* We could either offset on every reverse map or just pad some 0x00's
+ * at the front here */
+static const unsigned char filename_rev_map[] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 7 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 15 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 23 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 31 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 39 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, /* 47 */
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, /* 55 */
+ 0x0A, 0x0B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 63 */
+ 0x00, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, /* 71 */
+ 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, /* 79 */
+ 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, /* 87 */
+ 0x23, 0x24, 0x25, 0x00, 0x00, 0x00, 0x00, 0x00, /* 95 */
+ 0x00, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, /* 103 */
+ 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, /* 111 */
+ 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, /* 119 */
+ 0x3D, 0x3E, 0x3F
+};
+
+/**
+ * ecryptfs_encode_for_filename
+ * @dst: Destination location for encoded filename
+ * @dst_size: Size of the encoded filename in bytes
+ * @src: Source location for the filename to encode
+ * @src_size: Size of the source in bytes
+ */
+void ecryptfs_encode_for_filename(unsigned char *dst, size_t *dst_size,
+ unsigned char *src, size_t src_size)
+{
+ size_t num_blocks;
+ size_t block_num = 0;
+ size_t dst_offset = 0;
+ unsigned char last_block[3];
+
+ if (src_size == 0) {
+ (*dst_size) = 0;
+ goto out;
+ }
+ num_blocks = (src_size / 3);
+ if ((src_size % 3) == 0) {
+ memcpy(last_block, (&src[src_size - 3]), 3);
+ } else {
+ num_blocks++;
+ last_block[2] = 0x00;
+ switch (src_size % 3) {
+ case 1:
+ last_block[0] = src[src_size - 1];
+ last_block[1] = 0x00;
+ break;
+ case 2:
+ last_block[0] = src[src_size - 2];
+ last_block[1] = src[src_size - 1];
+ }
+ }
+ (*dst_size) = (num_blocks * 4);
+ if (!dst)
+ goto out;
+ while (block_num < num_blocks) {
+ unsigned char *src_block;
+ unsigned char dst_block[4];
+
+ if (block_num == (num_blocks - 1))
+ src_block = last_block;
+ else
+ src_block = &src[block_num * 3];
+ dst_block[0] = ((src_block[0] >> 2) & 0x3F);
+ dst_block[1] = (((src_block[0] << 4) & 0x30)
+ | ((src_block[1] >> 4) & 0x0F));
+ dst_block[2] = (((src_block[1] << 2) & 0x3C)
+ | ((src_block[2] >> 6) & 0x03));
+ dst_block[3] = (src_block[2] & 0x3F);
+ dst[dst_offset++] = portable_filename_chars[dst_block[0]];
+ dst[dst_offset++] = portable_filename_chars[dst_block[1]];
+ dst[dst_offset++] = portable_filename_chars[dst_block[2]];
+ dst[dst_offset++] = portable_filename_chars[dst_block[3]];
+ block_num++;
+ }
+out:
+ return;
+}
+
+/**
+ * ecryptfs_decode_from_filename
+ * @dst: If NULL, this function only sets @dst_size and returns. If
+ * non-NULL, this function decodes the encoded octets in @src
+ * into the memory that @dst points to.
+ * @dst_size: Set to the size of the decoded string.
+ * @src: The encoded set of octets to decode.
+ * @src_size: The size of the encoded set of octets to decode.
+ */
+static void
+ecryptfs_decode_from_filename(unsigned char *dst, size_t *dst_size,
+ const unsigned char *src, size_t src_size)
+{
+ u8 current_bit_offset = 0;
+ size_t src_byte_offset = 0;
+ size_t dst_byte_offset = 0;
+
+ if (dst == NULL) {
+ /* Not exact; conservatively long. Every block of 4
+ * encoded characters decodes into a block of 3
+ * decoded characters. This segment of code provides
+ * the caller with the maximum amount of allocated
+ * space that @dst will need to point to in a
+ * subsequent call. */
+ (*dst_size) = (((src_size + 1) * 3) / 4);
+ goto out;
+ }
+ while (src_byte_offset < src_size) {
+ unsigned char src_byte =
+ filename_rev_map[(int)src[src_byte_offset]];
+
+ switch (current_bit_offset) {
+ case 0:
+ dst[dst_byte_offset] = (src_byte << 2);
+ current_bit_offset = 6;
+ break;
+ case 6:
+ dst[dst_byte_offset++] |= (src_byte >> 4);
+ dst[dst_byte_offset] = ((src_byte & 0xF)
+ << 4);
+ current_bit_offset = 4;
+ break;
+ case 4:
+ dst[dst_byte_offset++] |= (src_byte >> 2);
+ dst[dst_byte_offset] = (src_byte << 6);
+ current_bit_offset = 2;
+ break;
+ case 2:
+ dst[dst_byte_offset++] |= (src_byte);
+ dst[dst_byte_offset] = 0;
+ current_bit_offset = 0;
+ break;
+ }
+ src_byte_offset++;
+ }
+ (*dst_size) = dst_byte_offset;
+out:
+ return;
+}
+
+/**
+ * ecryptfs_encrypt_and_encode_filename - converts a plaintext file name to cipher text
+ * @crypt_stat: The crypt_stat struct associated with the file anem to encode
+ * @name: The plaintext name
+ * @length: The length of the plaintext
+ * @encoded_name: The encypted name
+ *
+ * Encrypts and encodes a filename into something that constitutes a
+ * valid filename for a filesystem, with printable characters.
+ *
+ * We assume that we have a properly initialized crypto context,
+ * pointed to by crypt_stat->tfm.
+ *
+ * Returns zero on success; non-zero on otherwise
+ */
+int ecryptfs_encrypt_and_encode_filename(
+ char **encoded_name,
+ size_t *encoded_name_size,
+ struct ecryptfs_crypt_stat *crypt_stat,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ const char *name, size_t name_size)
+{
+ size_t encoded_name_no_prefix_size;
+ int rc = 0;
+
+ (*encoded_name) = NULL;
+ (*encoded_name_size) = 0;
+ if ((crypt_stat && (crypt_stat->flags & ECRYPTFS_ENCRYPT_FILENAMES))
+ || (mount_crypt_stat && (mount_crypt_stat->flags
+ & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES))) {
+ struct ecryptfs_filename *filename;
+
+ filename = kzalloc(sizeof(*filename), GFP_KERNEL);
+ if (!filename) {
+ printk(KERN_ERR "%s: Out of memory whilst attempting "
+ "to kzalloc [%zd] bytes\n", __func__,
+ sizeof(*filename));
+ rc = -ENOMEM;
+ goto out;
+ }
+ filename->filename = (char *)name;
+ filename->filename_size = name_size;
+ rc = ecryptfs_encrypt_filename(filename, crypt_stat,
+ mount_crypt_stat);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to encrypt "
+ "filename; rc = [%d]\n", __func__, rc);
+ kfree(filename);
+ goto out;
+ }
+ ecryptfs_encode_for_filename(
+ NULL, &encoded_name_no_prefix_size,
+ filename->encrypted_filename,
+ filename->encrypted_filename_size);
+ if ((crypt_stat && (crypt_stat->flags
+ & ECRYPTFS_ENCFN_USE_MOUNT_FNEK))
+ || (mount_crypt_stat
+ && (mount_crypt_stat->flags
+ & ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK)))
+ (*encoded_name_size) =
+ (ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE
+ + encoded_name_no_prefix_size);
+ else
+ (*encoded_name_size) =
+ (ECRYPTFS_FEK_ENCRYPTED_FILENAME_PREFIX_SIZE
+ + encoded_name_no_prefix_size);
+ (*encoded_name) = kmalloc((*encoded_name_size) + 1, GFP_KERNEL);
+ if (!(*encoded_name)) {
+ printk(KERN_ERR "%s: Out of memory whilst attempting "
+ "to kzalloc [%zd] bytes\n", __func__,
+ (*encoded_name_size));
+ rc = -ENOMEM;
+ kfree(filename->encrypted_filename);
+ kfree(filename);
+ goto out;
+ }
+ if ((crypt_stat && (crypt_stat->flags
+ & ECRYPTFS_ENCFN_USE_MOUNT_FNEK))
+ || (mount_crypt_stat
+ && (mount_crypt_stat->flags
+ & ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK))) {
+ memcpy((*encoded_name),
+ ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX,
+ ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE);
+ ecryptfs_encode_for_filename(
+ ((*encoded_name)
+ + ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE),
+ &encoded_name_no_prefix_size,
+ filename->encrypted_filename,
+ filename->encrypted_filename_size);
+ (*encoded_name_size) =
+ (ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE
+ + encoded_name_no_prefix_size);
+ (*encoded_name)[(*encoded_name_size)] = '\0';
+ (*encoded_name_size)++;
+ } else {
+ rc = -ENOTSUPP;
+ }
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to encode "
+ "encrypted filename; rc = [%d]\n", __func__,
+ rc);
+ kfree((*encoded_name));
+ (*encoded_name) = NULL;
+ (*encoded_name_size) = 0;
+ }
+ kfree(filename->encrypted_filename);
+ kfree(filename);
+ } else {
+ rc = ecryptfs_copy_filename(encoded_name,
+ encoded_name_size,
+ name, name_size);
+ }
+out:
+ return rc;
+}
+
+/**
+ * ecryptfs_decode_and_decrypt_filename - converts the encoded cipher text name to decoded plaintext
+ * @plaintext_name: The plaintext name
+ * @plaintext_name_size: The plaintext name size
+ * @ecryptfs_dir_dentry: eCryptfs directory dentry
+ * @name: The filename in cipher text
+ * @name_size: The cipher text name size
+ *
+ * Decrypts and decodes the filename.
+ *
+ * Returns zero on error; non-zero otherwise
+ */
+int ecryptfs_decode_and_decrypt_filename(char **plaintext_name,
+ size_t *plaintext_name_size,
+ struct dentry *ecryptfs_dir_dentry,
+ const char *name, size_t name_size)
+{
+ char *decoded_name;
+ size_t decoded_name_size;
+ size_t packet_size;
+ int rc = 0;
+
+ if ((name_size > ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE)
+ && (strncmp(name, ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX,
+ ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE) == 0)) {
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
+ &ecryptfs_superblock_to_private(
+ ecryptfs_dir_dentry->d_sb)->mount_crypt_stat;
+ const char *orig_name = name;
+ size_t orig_name_size = name_size;
+
+ name += ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE;
+ name_size -= ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE;
+ ecryptfs_decode_from_filename(NULL, &decoded_name_size,
+ name, name_size);
+ decoded_name = kmalloc(decoded_name_size, GFP_KERNEL);
+ if (!decoded_name) {
+ printk(KERN_ERR "%s: Out of memory whilst attempting "
+ "to kmalloc [%zd] bytes\n", __func__,
+ decoded_name_size);
+ rc = -ENOMEM;
+ goto out;
+ }
+ ecryptfs_decode_from_filename(decoded_name, &decoded_name_size,
+ name, name_size);
+ rc = ecryptfs_parse_tag_70_packet(plaintext_name,
+ plaintext_name_size,
+ &packet_size,
+ mount_crypt_stat,
+ decoded_name,
+ decoded_name_size);
+ if (rc) {
+ printk(KERN_INFO "%s: Could not parse tag 70 packet "
+ "from filename; copying through filename "
+ "as-is\n", __func__);
+ rc = ecryptfs_copy_filename(plaintext_name,
+ plaintext_name_size,
+ orig_name, orig_name_size);
+ goto out_free;
+ }
+ } else {
+ rc = ecryptfs_copy_filename(plaintext_name,
+ plaintext_name_size,
+ name, name_size);
+ goto out;
+ }
+out_free:
+ kfree(decoded_name);
+out:
+ return rc;
+}
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index a75026d35d1..c11fc95714a 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -51,12 +51,16 @@
#define ECRYPTFS_VERSIONING_XATTR 0x00000010
#define ECRYPTFS_VERSIONING_MULTKEY 0x00000020
#define ECRYPTFS_VERSIONING_DEVMISC 0x00000040
+#define ECRYPTFS_VERSIONING_HMAC 0x00000080
+#define ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION 0x00000100
+#define ECRYPTFS_VERSIONING_GCM 0x00000200
#define ECRYPTFS_VERSIONING_MASK (ECRYPTFS_VERSIONING_PASSPHRASE \
| ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH \
| ECRYPTFS_VERSIONING_PUBKEY \
| ECRYPTFS_VERSIONING_XATTR \
| ECRYPTFS_VERSIONING_MULTKEY \
- | ECRYPTFS_VERSIONING_DEVMISC)
+ | ECRYPTFS_VERSIONING_DEVMISC \
+ | ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION)
#define ECRYPTFS_MAX_PASSWORD_LENGTH 64
#define ECRYPTFS_MAX_PASSPHRASE_BYTES ECRYPTFS_MAX_PASSWORD_LENGTH
#define ECRYPTFS_SALT_SIZE 8
@@ -199,6 +203,7 @@ ecryptfs_get_key_payload_data(struct key *key)
#define ECRYPTFS_DEFAULT_CIPHER "aes"
#define ECRYPTFS_DEFAULT_KEY_BYTES 16
#define ECRYPTFS_DEFAULT_HASH "md5"
+#define ECRYPTFS_TAG_70_DIGEST ECRYPTFS_DEFAULT_HASH
#define ECRYPTFS_TAG_1_PACKET_TYPE 0x01
#define ECRYPTFS_TAG_3_PACKET_TYPE 0x8C
#define ECRYPTFS_TAG_11_PACKET_TYPE 0xED
@@ -206,30 +211,64 @@ ecryptfs_get_key_payload_data(struct key *key)
#define ECRYPTFS_TAG_65_PACKET_TYPE 0x41
#define ECRYPTFS_TAG_66_PACKET_TYPE 0x42
#define ECRYPTFS_TAG_67_PACKET_TYPE 0x43
+#define ECRYPTFS_TAG_70_PACKET_TYPE 0x46 /* FNEK-encrypted filename
+ * as dentry name */
+#define ECRYPTFS_TAG_71_PACKET_TYPE 0x47 /* FNEK-encrypted filename in
+ * metadata */
+#define ECRYPTFS_TAG_72_PACKET_TYPE 0x48 /* FEK-encrypted filename as
+ * dentry name */
+#define ECRYPTFS_TAG_73_PACKET_TYPE 0x49 /* FEK-encrypted filename as
+ * metadata */
+/* Constraint: ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES >=
+ * ECRYPTFS_MAX_IV_BYTES */
+#define ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES 16
+#define ECRYPTFS_NON_NULL 0x42 /* A reasonable substitute for NULL */
#define MD5_DIGEST_SIZE 16
+#define ECRYPTFS_TAG_70_DIGEST_SIZE MD5_DIGEST_SIZE
+#define ECRYPTFS_FEK_ENCRYPTED_FILENAME_PREFIX "ECRYPTFS_FEK_ENCRYPTED."
+#define ECRYPTFS_FEK_ENCRYPTED_FILENAME_PREFIX_SIZE 23
+#define ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX "ECRYPTFS_FNEK_ENCRYPTED."
+#define ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE 24
+#define ECRYPTFS_ENCRYPTED_DENTRY_NAME_LEN (18 + 1 + 4 + 1 + 32)
struct ecryptfs_key_sig {
struct list_head crypt_stat_list;
char keysig[ECRYPTFS_SIG_SIZE_HEX];
};
+struct ecryptfs_filename {
+ struct list_head crypt_stat_list;
+#define ECRYPTFS_FILENAME_CONTAINS_DECRYPTED 0x00000001
+ u32 flags;
+ u32 seq_no;
+ char *filename;
+ char *encrypted_filename;
+ size_t filename_size;
+ size_t encrypted_filename_size;
+ char fnek_sig[ECRYPTFS_SIG_SIZE_HEX];
+ char dentry_name[ECRYPTFS_ENCRYPTED_DENTRY_NAME_LEN + 1];
+};
+
/**
* This is the primary struct associated with each encrypted file.
*
* TODO: cache align/pack?
*/
struct ecryptfs_crypt_stat {
-#define ECRYPTFS_STRUCT_INITIALIZED 0x00000001
-#define ECRYPTFS_POLICY_APPLIED 0x00000002
-#define ECRYPTFS_NEW_FILE 0x00000004
-#define ECRYPTFS_ENCRYPTED 0x00000008
-#define ECRYPTFS_SECURITY_WARNING 0x00000010
-#define ECRYPTFS_ENABLE_HMAC 0x00000020
-#define ECRYPTFS_ENCRYPT_IV_PAGES 0x00000040
-#define ECRYPTFS_KEY_VALID 0x00000080
-#define ECRYPTFS_METADATA_IN_XATTR 0x00000100
-#define ECRYPTFS_VIEW_AS_ENCRYPTED 0x00000200
-#define ECRYPTFS_KEY_SET 0x00000400
+#define ECRYPTFS_STRUCT_INITIALIZED 0x00000001
+#define ECRYPTFS_POLICY_APPLIED 0x00000002
+#define ECRYPTFS_NEW_FILE 0x00000004
+#define ECRYPTFS_ENCRYPTED 0x00000008
+#define ECRYPTFS_SECURITY_WARNING 0x00000010
+#define ECRYPTFS_ENABLE_HMAC 0x00000020
+#define ECRYPTFS_ENCRYPT_IV_PAGES 0x00000040
+#define ECRYPTFS_KEY_VALID 0x00000080
+#define ECRYPTFS_METADATA_IN_XATTR 0x00000100
+#define ECRYPTFS_VIEW_AS_ENCRYPTED 0x00000200
+#define ECRYPTFS_KEY_SET 0x00000400
+#define ECRYPTFS_ENCRYPT_FILENAMES 0x00000800
+#define ECRYPTFS_ENCFN_USE_MOUNT_FNEK 0x00001000
+#define ECRYPTFS_ENCFN_USE_FEK 0x00002000
u32 flags;
unsigned int file_version;
size_t iv_bytes;
@@ -332,13 +371,20 @@ struct ecryptfs_mount_crypt_stat {
#define ECRYPTFS_XATTR_METADATA_ENABLED 0x00000002
#define ECRYPTFS_ENCRYPTED_VIEW_ENABLED 0x00000004
#define ECRYPTFS_MOUNT_CRYPT_STAT_INITIALIZED 0x00000008
+#define ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES 0x00000010
+#define ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK 0x00000020
+#define ECRYPTFS_GLOBAL_ENCFN_USE_FEK 0x00000040
u32 flags;
struct list_head global_auth_tok_list;
struct mutex global_auth_tok_list_mutex;
size_t num_global_auth_toks;
size_t global_default_cipher_key_size;
+ size_t global_default_fn_cipher_key_bytes;
unsigned char global_default_cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE
+ 1];
+ unsigned char global_default_fn_cipher_name[
+ ECRYPTFS_MAX_CIPHER_NAME_SIZE + 1];
+ char global_default_fnek_sig[ECRYPTFS_SIG_SIZE_HEX + 1];
};
/* superblock private data. */
@@ -571,13 +617,22 @@ struct ecryptfs_open_req {
int ecryptfs_interpose(struct dentry *hidden_dentry,
struct dentry *this_dentry, struct super_block *sb,
u32 flags);
+int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry,
+ struct dentry *lower_dentry,
+ struct ecryptfs_crypt_stat *crypt_stat,
+ struct inode *ecryptfs_dir_inode,
+ struct nameidata *ecryptfs_nd);
+int ecryptfs_decode_and_decrypt_filename(char **decrypted_name,
+ size_t *decrypted_name_size,
+ struct dentry *ecryptfs_dentry,
+ const char *name, size_t name_size);
int ecryptfs_fill_zeros(struct file *file, loff_t new_length);
-int ecryptfs_decode_filename(struct ecryptfs_crypt_stat *crypt_stat,
- const char *name, int length,
- char **decrypted_name);
-int ecryptfs_encode_filename(struct ecryptfs_crypt_stat *crypt_stat,
- const char *name, int length,
- char **encoded_name);
+int ecryptfs_encrypt_and_encode_filename(
+ char **encoded_name,
+ size_t *encoded_name_size,
+ struct ecryptfs_crypt_stat *crypt_stat,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ const char *name, size_t name_size);
struct dentry *ecryptfs_lower_dentry(struct dentry *this_dentry);
void ecryptfs_dump_hex(char *data, int bytes);
int virt_to_scatterlist(const void *addr, int size, struct scatterlist *sg,
@@ -599,7 +654,7 @@ int ecryptfs_read_and_validate_header_region(char *data,
struct inode *ecryptfs_inode);
int ecryptfs_read_and_validate_xattr_region(char *page_virt,
struct dentry *ecryptfs_dentry);
-u8 ecryptfs_code_for_cipher_string(struct ecryptfs_crypt_stat *crypt_stat);
+u8 ecryptfs_code_for_cipher_string(char *cipher_name, size_t key_bytes);
int ecryptfs_cipher_code_to_string(char *str, u8 cipher_code);
void ecryptfs_set_default_sizes(struct ecryptfs_crypt_stat *crypt_stat);
int ecryptfs_generate_key_packet_set(char *dest_base,
@@ -694,5 +749,17 @@ int ecryptfs_privileged_open(struct file **lower_file,
struct vfsmount *lower_mnt,
const struct cred *cred);
int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry);
+int
+ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
+ size_t *packet_size,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *filename, size_t filename_size);
+int
+ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
+ size_t *packet_size,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *data, size_t max_packet_size);
+int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat,
+ loff_t offset);
#endif /* #ifndef ECRYPTFS_KERNEL_H */
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index eb3dc4c7ac0..9e944057001 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -77,27 +77,27 @@ struct ecryptfs_getdents_callback {
/* Inspired by generic filldir in fs/readdir.c */
static int
-ecryptfs_filldir(void *dirent, const char *name, int namelen, loff_t offset,
- u64 ino, unsigned int d_type)
+ecryptfs_filldir(void *dirent, const char *lower_name, int lower_namelen,
+ loff_t offset, u64 ino, unsigned int d_type)
{
- struct ecryptfs_crypt_stat *crypt_stat;
struct ecryptfs_getdents_callback *buf =
(struct ecryptfs_getdents_callback *)dirent;
+ size_t name_size;
+ char *name;
int rc;
- int decoded_length;
- char *decoded_name;
- crypt_stat = ecryptfs_dentry_to_private(buf->dentry)->crypt_stat;
buf->filldir_called++;
- decoded_length = ecryptfs_decode_filename(crypt_stat, name, namelen,
- &decoded_name);
- if (decoded_length < 0) {
- rc = decoded_length;
+ rc = ecryptfs_decode_and_decrypt_filename(&name, &name_size,
+ buf->dentry, lower_name,
+ lower_namelen);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to decode and decrypt "
+ "filename [%s]; rc = [%d]\n", __func__, lower_name,
+ rc);
goto out;
}
- rc = buf->filldir(buf->dirent, decoded_name, decoded_length, offset,
- ino, d_type);
- kfree(decoded_name);
+ rc = buf->filldir(buf->dirent, name, name_size, offset, ino, d_type);
+ kfree(name);
if (rc >= 0)
buf->entries_written++;
out:
@@ -106,8 +106,8 @@ out:
/**
* ecryptfs_readdir
- * @file: The ecryptfs file struct
- * @dirent: Directory entry
+ * @file: The eCryptfs directory file
+ * @dirent: Directory entry handle
* @filldir: The filldir callback function
*/
static int ecryptfs_readdir(struct file *file, void *dirent, filldir_t filldir)
@@ -275,18 +275,9 @@ static int ecryptfs_release(struct inode *inode, struct file *file)
static int
ecryptfs_fsync(struct file *file, struct dentry *dentry, int datasync)
{
- struct file *lower_file = ecryptfs_file_to_lower(file);
- struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
- struct inode *lower_inode = lower_dentry->d_inode;
- int rc = -EINVAL;
-
- if (lower_inode->i_fop->fsync) {
- mutex_lock(&lower_inode->i_mutex);
- rc = lower_inode->i_fop->fsync(lower_file, lower_dentry,
- datasync);
- mutex_unlock(&lower_inode->i_mutex);
- }
- return rc;
+ return vfs_fsync(ecryptfs_file_to_lower(file),
+ ecryptfs_dentry_to_lower(dentry),
+ datasync);
}
static int ecryptfs_fasync(int fd, struct file *file, int flag)
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 5e78fc17988..5697899a168 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -52,8 +52,7 @@ static void unlock_dir(struct dentry *dir)
/**
* ecryptfs_create_underlying_file
* @lower_dir_inode: inode of the parent in the lower fs of the new file
- * @lower_dentry: New file's dentry in the lower fs
- * @ecryptfs_dentry: New file's dentry in ecryptfs
+ * @dentry: New file's dentry
* @mode: The mode of the new file
* @nd: nameidata of ecryptfs' parent's dentry & vfsmount
*
@@ -228,8 +227,7 @@ ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
{
int rc;
- /* ecryptfs_do_create() calls ecryptfs_interpose(), which opens
- * the crypt_stat->lower_file (persistent file) */
+ /* ecryptfs_do_create() calls ecryptfs_interpose() */
rc = ecryptfs_do_create(directory_inode, ecryptfs_dentry, mode, nd);
if (unlikely(rc)) {
ecryptfs_printk(KERN_WARNING, "Failed to create file in"
@@ -244,141 +242,91 @@ out:
}
/**
- * ecryptfs_lookup
- * @dir: inode
- * @dentry: The dentry
- * @nd: nameidata, may be NULL
- *
- * Find a file on disk. If the file does not exist, then we'll add it to the
- * dentry cache and continue on to read it from the disk.
+ * ecryptfs_lookup_and_interpose_lower - Perform a lookup
*/
-static struct dentry *ecryptfs_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry,
+ struct dentry *lower_dentry,
+ struct ecryptfs_crypt_stat *crypt_stat,
+ struct inode *ecryptfs_dir_inode,
+ struct nameidata *ecryptfs_nd)
{
- int rc = 0;
struct dentry *lower_dir_dentry;
- struct dentry *lower_dentry;
struct vfsmount *lower_mnt;
- char *encoded_name;
- int encoded_namelen;
- struct ecryptfs_crypt_stat *crypt_stat = NULL;
+ struct inode *lower_inode;
struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
char *page_virt = NULL;
- struct inode *lower_inode;
u64 file_size;
+ int rc = 0;
- lower_dir_dentry = ecryptfs_dentry_to_lower(dentry->d_parent);
- dentry->d_op = &ecryptfs_dops;
- if ((dentry->d_name.len == 1 && !strcmp(dentry->d_name.name, "."))
- || (dentry->d_name.len == 2
- && !strcmp(dentry->d_name.name, ".."))) {
- d_drop(dentry);
- goto out;
- }
- encoded_namelen = ecryptfs_encode_filename(crypt_stat,
- dentry->d_name.name,
- dentry->d_name.len,
- &encoded_name);
- if (encoded_namelen < 0) {
- rc = encoded_namelen;
- d_drop(dentry);
- goto out;
- }
- ecryptfs_printk(KERN_DEBUG, "encoded_name = [%s]; encoded_namelen "
- "= [%d]\n", encoded_name, encoded_namelen);
- lower_dentry = lookup_one_len(encoded_name, lower_dir_dentry,
- encoded_namelen - 1);
- kfree(encoded_name);
- if (IS_ERR(lower_dentry)) {
- ecryptfs_printk(KERN_ERR, "ERR from lower_dentry\n");
- rc = PTR_ERR(lower_dentry);
- d_drop(dentry);
- goto out;
- }
- lower_mnt = mntget(ecryptfs_dentry_to_lower_mnt(dentry->d_parent));
- ecryptfs_printk(KERN_DEBUG, "lower_dentry = [%p]; lower_dentry->"
- "d_name.name = [%s]\n", lower_dentry,
- lower_dentry->d_name.name);
+ lower_dir_dentry = lower_dentry->d_parent;
+ lower_mnt = mntget(ecryptfs_dentry_to_lower_mnt(
+ ecryptfs_dentry->d_parent));
lower_inode = lower_dentry->d_inode;
- fsstack_copy_attr_atime(dir, lower_dir_dentry->d_inode);
+ fsstack_copy_attr_atime(ecryptfs_dir_inode, lower_dir_dentry->d_inode);
BUG_ON(!atomic_read(&lower_dentry->d_count));
- ecryptfs_set_dentry_private(dentry,
+ ecryptfs_set_dentry_private(ecryptfs_dentry,
kmem_cache_alloc(ecryptfs_dentry_info_cache,
GFP_KERNEL));
- if (!ecryptfs_dentry_to_private(dentry)) {
+ if (!ecryptfs_dentry_to_private(ecryptfs_dentry)) {
rc = -ENOMEM;
- ecryptfs_printk(KERN_ERR, "Out of memory whilst attempting "
- "to allocate ecryptfs_dentry_info struct\n");
+ printk(KERN_ERR "%s: Out of memory whilst attempting "
+ "to allocate ecryptfs_dentry_info struct\n",
+ __func__);
goto out_dput;
}
- ecryptfs_set_dentry_lower(dentry, lower_dentry);
- ecryptfs_set_dentry_lower_mnt(dentry, lower_mnt);
+ ecryptfs_set_dentry_lower(ecryptfs_dentry, lower_dentry);
+ ecryptfs_set_dentry_lower_mnt(ecryptfs_dentry, lower_mnt);
if (!lower_dentry->d_inode) {
/* We want to add because we couldn't find in lower */
- d_add(dentry, NULL);
+ d_add(ecryptfs_dentry, NULL);
goto out;
}
- rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb,
- ECRYPTFS_INTERPOSE_FLAG_D_ADD);
+ rc = ecryptfs_interpose(lower_dentry, ecryptfs_dentry,
+ ecryptfs_dir_inode->i_sb, 1);
if (rc) {
- ecryptfs_printk(KERN_ERR, "Error interposing\n");
+ printk(KERN_ERR "%s: Error interposing; rc = [%d]\n",
+ __func__, rc);
goto out;
}
- if (S_ISDIR(lower_inode->i_mode)) {
- ecryptfs_printk(KERN_DEBUG, "Is a directory; returning\n");
+ if (S_ISDIR(lower_inode->i_mode))
goto out;
- }
- if (S_ISLNK(lower_inode->i_mode)) {
- ecryptfs_printk(KERN_DEBUG, "Is a symlink; returning\n");
+ if (S_ISLNK(lower_inode->i_mode))
goto out;
- }
- if (special_file(lower_inode->i_mode)) {
- ecryptfs_printk(KERN_DEBUG, "Is a special file; returning\n");
+ if (special_file(lower_inode->i_mode))
goto out;
- }
- if (!nd) {
- ecryptfs_printk(KERN_DEBUG, "We have a NULL nd, just leave"
- "as we *think* we are about to unlink\n");
+ if (!ecryptfs_nd)
goto out;
- }
/* Released in this function */
- page_virt = kmem_cache_zalloc(ecryptfs_header_cache_2,
- GFP_USER);
+ page_virt = kmem_cache_zalloc(ecryptfs_header_cache_2, GFP_USER);
if (!page_virt) {
+ printk(KERN_ERR "%s: Cannot kmem_cache_zalloc() a page\n",
+ __func__);
rc = -ENOMEM;
- ecryptfs_printk(KERN_ERR,
- "Cannot ecryptfs_kmalloc a page\n");
goto out;
}
- crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
- if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED))
- ecryptfs_set_default_sizes(crypt_stat);
- if (!ecryptfs_inode_to_private(dentry->d_inode)->lower_file) {
- rc = ecryptfs_init_persistent_file(dentry);
+ if (!ecryptfs_inode_to_private(ecryptfs_dentry->d_inode)->lower_file) {
+ rc = ecryptfs_init_persistent_file(ecryptfs_dentry);
if (rc) {
printk(KERN_ERR "%s: Error attempting to initialize "
"the persistent file for the dentry with name "
"[%s]; rc = [%d]\n", __func__,
- dentry->d_name.name, rc);
- goto out;
+ ecryptfs_dentry->d_name.name, rc);
+ goto out_free_kmem;
}
}
rc = ecryptfs_read_and_validate_header_region(page_virt,
- dentry->d_inode);
+ ecryptfs_dentry->d_inode);
if (rc) {
- rc = ecryptfs_read_and_validate_xattr_region(page_virt, dentry);
+ rc = ecryptfs_read_and_validate_xattr_region(page_virt,
+ ecryptfs_dentry);
if (rc) {
- printk(KERN_DEBUG "Valid metadata not found in header "
- "region or xattr region; treating file as "
- "unencrypted\n");
rc = 0;
- kmem_cache_free(ecryptfs_header_cache_2, page_virt);
- goto out;
+ goto out_free_kmem;
}
crypt_stat->flags |= ECRYPTFS_METADATA_IN_XATTR;
}
mount_crypt_stat = &ecryptfs_superblock_to_private(
- dentry->d_sb)->mount_crypt_stat;
+ ecryptfs_dentry->d_sb)->mount_crypt_stat;
if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED) {
if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR)
file_size = (crypt_stat->num_header_bytes_at_front
@@ -388,14 +336,103 @@ static struct dentry *ecryptfs_lookup(struct inode *dir, struct dentry *dentry,
} else {
file_size = get_unaligned_be64(page_virt);
}
- i_size_write(dentry->d_inode, (loff_t)file_size);
+ i_size_write(ecryptfs_dentry->d_inode, (loff_t)file_size);
+out_free_kmem:
kmem_cache_free(ecryptfs_header_cache_2, page_virt);
goto out;
-
out_dput:
dput(lower_dentry);
- d_drop(dentry);
+ d_drop(ecryptfs_dentry);
+out:
+ return rc;
+}
+
+/**
+ * ecryptfs_lookup
+ * @ecryptfs_dir_inode: The eCryptfs directory inode
+ * @ecryptfs_dentry: The eCryptfs dentry that we are looking up
+ * @ecryptfs_nd: nameidata; may be NULL
+ *
+ * Find a file on disk. If the file does not exist, then we'll add it to the
+ * dentry cache and continue on to read it from the disk.
+ */
+static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
+ struct dentry *ecryptfs_dentry,
+ struct nameidata *ecryptfs_nd)
+{
+ char *encrypted_and_encoded_name = NULL;
+ size_t encrypted_and_encoded_name_size;
+ struct ecryptfs_crypt_stat *crypt_stat = NULL;
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;
+ struct ecryptfs_inode_info *inode_info;
+ struct dentry *lower_dir_dentry, *lower_dentry;
+ int rc = 0;
+
+ ecryptfs_dentry->d_op = &ecryptfs_dops;
+ if ((ecryptfs_dentry->d_name.len == 1
+ && !strcmp(ecryptfs_dentry->d_name.name, "."))
+ || (ecryptfs_dentry->d_name.len == 2
+ && !strcmp(ecryptfs_dentry->d_name.name, ".."))) {
+ goto out_d_drop;
+ }
+ lower_dir_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry->d_parent);
+ lower_dentry = lookup_one_len(ecryptfs_dentry->d_name.name,
+ lower_dir_dentry,
+ ecryptfs_dentry->d_name.len);
+ if (IS_ERR(lower_dentry)) {
+ rc = PTR_ERR(lower_dentry);
+ printk(KERN_ERR "%s: lookup_one_len() returned [%d] on "
+ "lower_dentry = [%s]\n", __func__, rc,
+ ecryptfs_dentry->d_name.name);
+ goto out_d_drop;
+ }
+ if (lower_dentry->d_inode)
+ goto lookup_and_interpose;
+ inode_info = ecryptfs_inode_to_private(ecryptfs_dentry->d_inode);
+ if (inode_info) {
+ crypt_stat = &inode_info->crypt_stat;
+ /* TODO: lock for crypt_stat comparison */
+ if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED))
+ ecryptfs_set_default_sizes(crypt_stat);
+ }
+ if (crypt_stat)
+ mount_crypt_stat = crypt_stat->mount_crypt_stat;
+ else
+ mount_crypt_stat = &ecryptfs_superblock_to_private(
+ ecryptfs_dentry->d_sb)->mount_crypt_stat;
+ if (!(crypt_stat && (crypt_stat->flags & ECRYPTFS_ENCRYPT_FILENAMES))
+ && !(mount_crypt_stat && (mount_crypt_stat->flags
+ & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)))
+ goto lookup_and_interpose;
+ dput(lower_dentry);
+ rc = ecryptfs_encrypt_and_encode_filename(
+ &encrypted_and_encoded_name, &encrypted_and_encoded_name_size,
+ crypt_stat, mount_crypt_stat, ecryptfs_dentry->d_name.name,
+ ecryptfs_dentry->d_name.len);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to encrypt and encode "
+ "filename; rc = [%d]\n", __func__, rc);
+ goto out_d_drop;
+ }
+ lower_dentry = lookup_one_len(encrypted_and_encoded_name,
+ lower_dir_dentry,
+ encrypted_and_encoded_name_size - 1);
+ if (IS_ERR(lower_dentry)) {
+ rc = PTR_ERR(lower_dentry);
+ printk(KERN_ERR "%s: lookup_one_len() returned [%d] on "
+ "lower_dentry = [%s]\n", __func__, rc,
+ encrypted_and_encoded_name);
+ goto out_d_drop;
+ }
+lookup_and_interpose:
+ rc = ecryptfs_lookup_and_interpose_lower(ecryptfs_dentry, lower_dentry,
+ crypt_stat, ecryptfs_dir_inode,
+ ecryptfs_nd);
+ goto out;
+out_d_drop:
+ d_drop(ecryptfs_dentry);
out:
+ kfree(encrypted_and_encoded_name);
return ERR_PTR(rc);
}
@@ -466,19 +503,21 @@ static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
char *encoded_symname;
- int encoded_symlen;
- struct ecryptfs_crypt_stat *crypt_stat = NULL;
+ size_t encoded_symlen;
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat = NULL;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
dget(lower_dentry);
lower_dir_dentry = lock_parent(lower_dentry);
- encoded_symlen = ecryptfs_encode_filename(crypt_stat, symname,
- strlen(symname),
- &encoded_symname);
- if (encoded_symlen < 0) {
- rc = encoded_symlen;
+ mount_crypt_stat = &ecryptfs_superblock_to_private(
+ dir->i_sb)->mount_crypt_stat;
+ rc = ecryptfs_encrypt_and_encode_filename(&encoded_symname,
+ &encoded_symlen,
+ NULL,
+ mount_crypt_stat, symname,
+ strlen(symname));
+ if (rc)
goto out_lock;
- }
rc = vfs_symlink(lower_dir_dentry->d_inode, lower_dentry,
encoded_symname);
kfree(encoded_symname);
@@ -602,53 +641,54 @@ out_lock:
}
static int
-ecryptfs_readlink(struct dentry *dentry, char __user * buf, int bufsiz)
+ecryptfs_readlink(struct dentry *dentry, char __user *buf, int bufsiz)
{
- int rc;
- struct dentry *lower_dentry;
- char *decoded_name;
char *lower_buf;
- mm_segment_t old_fs;
+ struct dentry *lower_dentry;
struct ecryptfs_crypt_stat *crypt_stat;
+ char *plaintext_name;
+ size_t plaintext_name_size;
+ mm_segment_t old_fs;
+ int rc;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
- if (!lower_dentry->d_inode->i_op ||
- !lower_dentry->d_inode->i_op->readlink) {
+ if (!lower_dentry->d_inode->i_op->readlink) {
rc = -EINVAL;
goto out;
}
+ crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
/* Released in this function */
lower_buf = kmalloc(bufsiz, GFP_KERNEL);
if (lower_buf == NULL) {
- ecryptfs_printk(KERN_ERR, "Out of memory\n");
+ printk(KERN_ERR "%s: Out of memory whilst attempting to "
+ "kmalloc [%d] bytes\n", __func__, bufsiz);
rc = -ENOMEM;
goto out;
}
old_fs = get_fs();
set_fs(get_ds());
- ecryptfs_printk(KERN_DEBUG, "Calling readlink w/ "
- "lower_dentry->d_name.name = [%s]\n",
- lower_dentry->d_name.name);
rc = lower_dentry->d_inode->i_op->readlink(lower_dentry,
(char __user *)lower_buf,
bufsiz);
set_fs(old_fs);
if (rc >= 0) {
- crypt_stat = NULL;
- rc = ecryptfs_decode_filename(crypt_stat, lower_buf, rc,
- &decoded_name);
- if (rc == -ENOMEM)
+ rc = ecryptfs_decode_and_decrypt_filename(&plaintext_name,
+ &plaintext_name_size,
+ dentry, lower_buf,
+ rc);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to decode and "
+ "decrypt filename; rc = [%d]\n", __func__,
+ rc);
goto out_free_lower_buf;
- if (rc > 0) {
- ecryptfs_printk(KERN_DEBUG, "Copying [%d] bytes "
- "to userspace: [%*s]\n", rc,
- decoded_name);
- if (copy_to_user(buf, decoded_name, rc))
- rc = -EFAULT;
}
- kfree(decoded_name);
- fsstack_copy_attr_atime(dentry->d_inode,
- lower_dentry->d_inode);
+ rc = copy_to_user(buf, plaintext_name, plaintext_name_size);
+ if (rc)
+ rc = -EFAULT;
+ else
+ rc = plaintext_name_size;
+ kfree(plaintext_name);
+ fsstack_copy_attr_atime(dentry->d_inode, lower_dentry->d_inode);
}
out_free_lower_buf:
kfree(lower_buf);
@@ -670,8 +710,6 @@ static void *ecryptfs_follow_link(struct dentry *dentry, struct nameidata *nd)
}
old_fs = get_fs();
set_fs(get_ds());
- ecryptfs_printk(KERN_DEBUG, "Calling readlink w/ "
- "dentry->d_name.name = [%s]\n", dentry->d_name.name);
rc = dentry->d_inode->i_op->readlink(dentry, (char __user *)buf, len);
set_fs(old_fs);
if (rc < 0)
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index 0d713b69194..ff539420cc6 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -358,7 +358,7 @@ parse_tag_67_packet(struct ecryptfs_key_record *key_rec,
/* verify that everything through the encrypted FEK size is present */
if (message_len < 4) {
rc = -EIO;
- printk(KERN_ERR "%s: message_len is [%Zd]; minimum acceptable "
+ printk(KERN_ERR "%s: message_len is [%zd]; minimum acceptable "
"message length is [%d]\n", __func__, message_len, 4);
goto out;
}
@@ -385,13 +385,13 @@ parse_tag_67_packet(struct ecryptfs_key_record *key_rec,
i += data_len;
if (message_len < (i + key_rec->enc_key_size)) {
rc = -EIO;
- printk(KERN_ERR "%s: message_len [%Zd]; max len is [%Zd]\n",
+ printk(KERN_ERR "%s: message_len [%zd]; max len is [%zd]\n",
__func__, message_len, (i + key_rec->enc_key_size));
goto out;
}
if (key_rec->enc_key_size > ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES) {
rc = -EIO;
- printk(KERN_ERR "%s: Encrypted key_size [%Zd] larger than "
+ printk(KERN_ERR "%s: Encrypted key_size [%zd] larger than "
"the maximum key size [%d]\n", __func__,
key_rec->enc_key_size,
ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES);
@@ -403,6 +403,580 @@ out:
}
static int
+ecryptfs_find_global_auth_tok_for_sig(
+ struct ecryptfs_global_auth_tok **global_auth_tok,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *sig)
+{
+ struct ecryptfs_global_auth_tok *walker;
+ int rc = 0;
+
+ (*global_auth_tok) = NULL;
+ mutex_lock(&mount_crypt_stat->global_auth_tok_list_mutex);
+ list_for_each_entry(walker,
+ &mount_crypt_stat->global_auth_tok_list,
+ mount_crypt_stat_list) {
+ if (memcmp(walker->sig, sig, ECRYPTFS_SIG_SIZE_HEX) == 0) {
+ (*global_auth_tok) = walker;
+ goto out;
+ }
+ }
+ rc = -EINVAL;
+out:
+ mutex_unlock(&mount_crypt_stat->global_auth_tok_list_mutex);
+ return rc;
+}
+
+/**
+ * ecryptfs_find_auth_tok_for_sig
+ * @auth_tok: Set to the matching auth_tok; NULL if not found
+ * @crypt_stat: inode crypt_stat crypto context
+ * @sig: Sig of auth_tok to find
+ *
+ * For now, this function simply looks at the registered auth_tok's
+ * linked off the mount_crypt_stat, so all the auth_toks that can be
+ * used must be registered at mount time. This function could
+ * potentially try a lot harder to find auth_tok's (e.g., by calling
+ * out to ecryptfsd to dynamically retrieve an auth_tok object) so
+ * that static registration of auth_tok's will no longer be necessary.
+ *
+ * Returns zero on no error; non-zero on error
+ */
+static int
+ecryptfs_find_auth_tok_for_sig(
+ struct ecryptfs_auth_tok **auth_tok,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *sig)
+{
+ struct ecryptfs_global_auth_tok *global_auth_tok;
+ int rc = 0;
+
+ (*auth_tok) = NULL;
+ if (ecryptfs_find_global_auth_tok_for_sig(&global_auth_tok,
+ mount_crypt_stat, sig)) {
+ struct key *auth_tok_key;
+
+ rc = ecryptfs_keyring_auth_tok_for_sig(&auth_tok_key, auth_tok,
+ sig);
+ } else
+ (*auth_tok) = global_auth_tok->global_auth_tok;
+ return rc;
+}
+
+/**
+ * write_tag_70_packet can gobble a lot of stack space. We stuff most
+ * of the function's parameters in a kmalloc'd struct to help reduce
+ * eCryptfs' overall stack usage.
+ */
+struct ecryptfs_write_tag_70_packet_silly_stack {
+ u8 cipher_code;
+ size_t max_packet_size;
+ size_t packet_size_len;
+ size_t block_aligned_filename_size;
+ size_t block_size;
+ size_t i;
+ size_t j;
+ size_t num_rand_bytes;
+ struct mutex *tfm_mutex;
+ char *block_aligned_filename;
+ struct ecryptfs_auth_tok *auth_tok;
+ struct scatterlist src_sg;
+ struct scatterlist dst_sg;
+ struct blkcipher_desc desc;
+ char iv[ECRYPTFS_MAX_IV_BYTES];
+ char hash[ECRYPTFS_TAG_70_DIGEST_SIZE];
+ char tmp_hash[ECRYPTFS_TAG_70_DIGEST_SIZE];
+ struct hash_desc hash_desc;
+ struct scatterlist hash_sg;
+};
+
+/**
+ * write_tag_70_packet - Write encrypted filename (EFN) packet against FNEK
+ * @filename: NULL-terminated filename string
+ *
+ * This is the simplest mechanism for achieving filename encryption in
+ * eCryptfs. It encrypts the given filename with the mount-wide
+ * filename encryption key (FNEK) and stores it in a packet to @dest,
+ * which the callee will encode and write directly into the dentry
+ * name.
+ */
+int
+ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
+ size_t *packet_size,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *filename, size_t filename_size)
+{
+ struct ecryptfs_write_tag_70_packet_silly_stack *s;
+ int rc = 0;
+
+ s = kmalloc(sizeof(*s), GFP_KERNEL);
+ if (!s) {
+ printk(KERN_ERR "%s: Out of memory whilst trying to kmalloc "
+ "[%zd] bytes of kernel memory\n", __func__, sizeof(*s));
+ goto out;
+ }
+ s->desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+ (*packet_size) = 0;
+ rc = ecryptfs_get_tfm_and_mutex_for_cipher_name(
+ &s->desc.tfm,
+ &s->tfm_mutex, mount_crypt_stat->global_default_fn_cipher_name);
+ if (unlikely(rc)) {
+ printk(KERN_ERR "Internal error whilst attempting to get "
+ "tfm and mutex for cipher name [%s]; rc = [%d]\n",
+ mount_crypt_stat->global_default_fn_cipher_name, rc);
+ goto out;
+ }
+ mutex_lock(s->tfm_mutex);
+ s->block_size = crypto_blkcipher_blocksize(s->desc.tfm);
+ /* Plus one for the \0 separator between the random prefix
+ * and the plaintext filename */
+ s->num_rand_bytes = (ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES + 1);
+ s->block_aligned_filename_size = (s->num_rand_bytes + filename_size);
+ if ((s->block_aligned_filename_size % s->block_size) != 0) {
+ s->num_rand_bytes += (s->block_size
+ - (s->block_aligned_filename_size
+ % s->block_size));
+ s->block_aligned_filename_size = (s->num_rand_bytes
+ + filename_size);
+ }
+ /* Octet 0: Tag 70 identifier
+ * Octets 1-N1: Tag 70 packet size (includes cipher identifier
+ * and block-aligned encrypted filename size)
+ * Octets N1-N2: FNEK sig (ECRYPTFS_SIG_SIZE)
+ * Octet N2-N3: Cipher identifier (1 octet)
+ * Octets N3-N4: Block-aligned encrypted filename
+ * - Consists of a minimum number of random characters, a \0
+ * separator, and then the filename */
+ s->max_packet_size = (1 /* Tag 70 identifier */
+ + 3 /* Max Tag 70 packet size */
+ + ECRYPTFS_SIG_SIZE /* FNEK sig */
+ + 1 /* Cipher identifier */
+ + s->block_aligned_filename_size);
+ if (dest == NULL) {
+ (*packet_size) = s->max_packet_size;
+ goto out_unlock;
+ }
+ if (s->max_packet_size > (*remaining_bytes)) {
+ printk(KERN_WARNING "%s: Require [%zd] bytes to write; only "
+ "[%zd] available\n", __func__, s->max_packet_size,
+ (*remaining_bytes));
+ rc = -EINVAL;
+ goto out_unlock;
+ }
+ s->block_aligned_filename = kzalloc(s->block_aligned_filename_size,
+ GFP_KERNEL);
+ if (!s->block_aligned_filename) {
+ printk(KERN_ERR "%s: Out of kernel memory whilst attempting to "
+ "kzalloc [%zd] bytes\n", __func__,
+ s->block_aligned_filename_size);
+ rc = -ENOMEM;
+ goto out_unlock;
+ }
+ s->i = 0;
+ dest[s->i++] = ECRYPTFS_TAG_70_PACKET_TYPE;
+ rc = ecryptfs_write_packet_length(&dest[s->i],
+ (ECRYPTFS_SIG_SIZE
+ + 1 /* Cipher code */
+ + s->block_aligned_filename_size),
+ &s->packet_size_len);
+ if (rc) {
+ printk(KERN_ERR "%s: Error generating tag 70 packet "
+ "header; cannot generate packet length; rc = [%d]\n",
+ __func__, rc);
+ goto out_free_unlock;
+ }
+ s->i += s->packet_size_len;
+ ecryptfs_from_hex(&dest[s->i],
+ mount_crypt_stat->global_default_fnek_sig,
+ ECRYPTFS_SIG_SIZE);
+ s->i += ECRYPTFS_SIG_SIZE;
+ s->cipher_code = ecryptfs_code_for_cipher_string(
+ mount_crypt_stat->global_default_fn_cipher_name,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes);
+ if (s->cipher_code == 0) {
+ printk(KERN_WARNING "%s: Unable to generate code for "
+ "cipher [%s] with key bytes [%zd]\n", __func__,
+ mount_crypt_stat->global_default_fn_cipher_name,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes);
+ rc = -EINVAL;
+ goto out_free_unlock;
+ }
+ dest[s->i++] = s->cipher_code;
+ rc = ecryptfs_find_auth_tok_for_sig(
+ &s->auth_tok, mount_crypt_stat,
+ mount_crypt_stat->global_default_fnek_sig);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to find auth tok for "
+ "fnek sig [%s]; rc = [%d]\n", __func__,
+ mount_crypt_stat->global_default_fnek_sig, rc);
+ goto out_free_unlock;
+ }
+ /* TODO: Support other key modules than passphrase for
+ * filename encryption */
+ BUG_ON(s->auth_tok->token_type != ECRYPTFS_PASSWORD);
+ sg_init_one(
+ &s->hash_sg,
+ (u8 *)s->auth_tok->token.password.session_key_encryption_key,
+ s->auth_tok->token.password.session_key_encryption_key_bytes);
+ s->hash_desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+ s->hash_desc.tfm = crypto_alloc_hash(ECRYPTFS_TAG_70_DIGEST, 0,
+ CRYPTO_ALG_ASYNC);
+ if (IS_ERR(s->hash_desc.tfm)) {
+ rc = PTR_ERR(s->hash_desc.tfm);
+ printk(KERN_ERR "%s: Error attempting to "
+ "allocate hash crypto context; rc = [%d]\n",
+ __func__, rc);
+ goto out_free_unlock;
+ }
+ rc = crypto_hash_init(&s->hash_desc);
+ if (rc) {
+ printk(KERN_ERR
+ "%s: Error initializing crypto hash; rc = [%d]\n",
+ __func__, rc);
+ goto out_release_free_unlock;
+ }
+ rc = crypto_hash_update(
+ &s->hash_desc, &s->hash_sg,
+ s->auth_tok->token.password.session_key_encryption_key_bytes);
+ if (rc) {
+ printk(KERN_ERR
+ "%s: Error updating crypto hash; rc = [%d]\n",
+ __func__, rc);
+ goto out_release_free_unlock;
+ }
+ rc = crypto_hash_final(&s->hash_desc, s->hash);
+ if (rc) {
+ printk(KERN_ERR
+ "%s: Error finalizing crypto hash; rc = [%d]\n",
+ __func__, rc);
+ goto out_release_free_unlock;
+ }
+ for (s->j = 0; s->j < (s->num_rand_bytes - 1); s->j++) {
+ s->block_aligned_filename[s->j] =
+ s->hash[(s->j % ECRYPTFS_TAG_70_DIGEST_SIZE)];
+ if ((s->j % ECRYPTFS_TAG_70_DIGEST_SIZE)
+ == (ECRYPTFS_TAG_70_DIGEST_SIZE - 1)) {
+ sg_init_one(&s->hash_sg, (u8 *)s->hash,
+ ECRYPTFS_TAG_70_DIGEST_SIZE);
+ rc = crypto_hash_init(&s->hash_desc);
+ if (rc) {
+ printk(KERN_ERR
+ "%s: Error initializing crypto hash; "
+ "rc = [%d]\n", __func__, rc);
+ goto out_release_free_unlock;
+ }
+ rc = crypto_hash_update(&s->hash_desc, &s->hash_sg,
+ ECRYPTFS_TAG_70_DIGEST_SIZE);
+ if (rc) {
+ printk(KERN_ERR
+ "%s: Error updating crypto hash; "
+ "rc = [%d]\n", __func__, rc);
+ goto out_release_free_unlock;
+ }
+ rc = crypto_hash_final(&s->hash_desc, s->tmp_hash);
+ if (rc) {
+ printk(KERN_ERR
+ "%s: Error finalizing crypto hash; "
+ "rc = [%d]\n", __func__, rc);
+ goto out_release_free_unlock;
+ }
+ memcpy(s->hash, s->tmp_hash,
+ ECRYPTFS_TAG_70_DIGEST_SIZE);
+ }
+ if (s->block_aligned_filename[s->j] == '\0')
+ s->block_aligned_filename[s->j] = ECRYPTFS_NON_NULL;
+ }
+ memcpy(&s->block_aligned_filename[s->num_rand_bytes], filename,
+ filename_size);
+ rc = virt_to_scatterlist(s->block_aligned_filename,
+ s->block_aligned_filename_size, &s->src_sg, 1);
+ if (rc != 1) {
+ printk(KERN_ERR "%s: Internal error whilst attempting to "
+ "convert filename memory to scatterlist; "
+ "expected rc = 1; got rc = [%d]. "
+ "block_aligned_filename_size = [%zd]\n", __func__, rc,
+ s->block_aligned_filename_size);
+ goto out_release_free_unlock;
+ }
+ rc = virt_to_scatterlist(&dest[s->i], s->block_aligned_filename_size,
+ &s->dst_sg, 1);
+ if (rc != 1) {
+ printk(KERN_ERR "%s: Internal error whilst attempting to "
+ "convert encrypted filename memory to scatterlist; "
+ "expected rc = 1; got rc = [%d]. "
+ "block_aligned_filename_size = [%zd]\n", __func__, rc,
+ s->block_aligned_filename_size);
+ goto out_release_free_unlock;
+ }
+ /* The characters in the first block effectively do the job
+ * of the IV here, so we just use 0's for the IV. Note the
+ * constraint that ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES
+ * >= ECRYPTFS_MAX_IV_BYTES. */
+ memset(s->iv, 0, ECRYPTFS_MAX_IV_BYTES);
+ s->desc.info = s->iv;
+ rc = crypto_blkcipher_setkey(
+ s->desc.tfm,
+ s->auth_tok->token.password.session_key_encryption_key,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes);
+ if (rc < 0) {
+ printk(KERN_ERR "%s: Error setting key for crypto context; "
+ "rc = [%d]. s->auth_tok->token.password.session_key_"
+ "encryption_key = [0x%p]; mount_crypt_stat->"
+ "global_default_fn_cipher_key_bytes = [%zd]\n", __func__,
+ rc,
+ s->auth_tok->token.password.session_key_encryption_key,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes);
+ goto out_release_free_unlock;
+ }
+ rc = crypto_blkcipher_encrypt_iv(&s->desc, &s->dst_sg, &s->src_sg,
+ s->block_aligned_filename_size);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to encrypt filename; "
+ "rc = [%d]\n", __func__, rc);
+ goto out_release_free_unlock;
+ }
+ s->i += s->block_aligned_filename_size;
+ (*packet_size) = s->i;
+ (*remaining_bytes) -= (*packet_size);
+out_release_free_unlock:
+ crypto_free_hash(s->hash_desc.tfm);
+out_free_unlock:
+ memset(s->block_aligned_filename, 0, s->block_aligned_filename_size);
+ kfree(s->block_aligned_filename);
+out_unlock:
+ mutex_unlock(s->tfm_mutex);
+out:
+ kfree(s);
+ return rc;
+}
+
+struct ecryptfs_parse_tag_70_packet_silly_stack {
+ u8 cipher_code;
+ size_t max_packet_size;
+ size_t packet_size_len;
+ size_t parsed_tag_70_packet_size;
+ size_t block_aligned_filename_size;
+ size_t block_size;
+ size_t i;
+ struct mutex *tfm_mutex;
+ char *decrypted_filename;
+ struct ecryptfs_auth_tok *auth_tok;
+ struct scatterlist src_sg;
+ struct scatterlist dst_sg;
+ struct blkcipher_desc desc;
+ char fnek_sig_hex[ECRYPTFS_SIG_SIZE_HEX + 1];
+ char iv[ECRYPTFS_MAX_IV_BYTES];
+ char cipher_string[ECRYPTFS_MAX_CIPHER_NAME_SIZE];
+};
+
+/**
+ * parse_tag_70_packet - Parse and process FNEK-encrypted passphrase packet
+ * @filename: This function kmalloc's the memory for the filename
+ * @filename_size: This function sets this to the amount of memory
+ * kmalloc'd for the filename
+ * @packet_size: This function sets this to the the number of octets
+ * in the packet parsed
+ * @mount_crypt_stat: The mount-wide cryptographic context
+ * @data: The memory location containing the start of the tag 70
+ * packet
+ * @max_packet_size: The maximum legal size of the packet to be parsed
+ * from @data
+ *
+ * Returns zero on success; non-zero otherwise
+ */
+int
+ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
+ size_t *packet_size,
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
+ char *data, size_t max_packet_size)
+{
+ struct ecryptfs_parse_tag_70_packet_silly_stack *s;
+ int rc = 0;
+
+ (*packet_size) = 0;
+ (*filename_size) = 0;
+ (*filename) = NULL;
+ s = kmalloc(sizeof(*s), GFP_KERNEL);
+ if (!s) {
+ printk(KERN_ERR "%s: Out of memory whilst trying to kmalloc "
+ "[%zd] bytes of kernel memory\n", __func__, sizeof(*s));
+ goto out;
+ }
+ s->desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+ if (max_packet_size < (1 + 1 + ECRYPTFS_SIG_SIZE + 1 + 1)) {
+ printk(KERN_WARNING "%s: max_packet_size is [%zd]; it must be "
+ "at least [%d]\n", __func__, max_packet_size,
+ (1 + 1 + ECRYPTFS_SIG_SIZE + 1 + 1));
+ rc = -EINVAL;
+ goto out;
+ }
+ /* Octet 0: Tag 70 identifier
+ * Octets 1-N1: Tag 70 packet size (includes cipher identifier
+ * and block-aligned encrypted filename size)
+ * Octets N1-N2: FNEK sig (ECRYPTFS_SIG_SIZE)
+ * Octet N2-N3: Cipher identifier (1 octet)
+ * Octets N3-N4: Block-aligned encrypted filename
+ * - Consists of a minimum number of random numbers, a \0
+ * separator, and then the filename */
+ if (data[(*packet_size)++] != ECRYPTFS_TAG_70_PACKET_TYPE) {
+ printk(KERN_WARNING "%s: Invalid packet tag [0x%.2x]; must be "
+ "tag [0x%.2x]\n", __func__,
+ data[((*packet_size) - 1)], ECRYPTFS_TAG_70_PACKET_TYPE);
+ rc = -EINVAL;
+ goto out;
+ }
+ rc = ecryptfs_parse_packet_length(&data[(*packet_size)],
+ &s->parsed_tag_70_packet_size,
+ &s->packet_size_len);
+ if (rc) {
+ printk(KERN_WARNING "%s: Error parsing packet length; "
+ "rc = [%d]\n", __func__, rc);
+ goto out;
+ }
+ s->block_aligned_filename_size = (s->parsed_tag_70_packet_size
+ - ECRYPTFS_SIG_SIZE - 1);
+ if ((1 + s->packet_size_len + s->parsed_tag_70_packet_size)
+ > max_packet_size) {
+ printk(KERN_WARNING "%s: max_packet_size is [%zd]; real packet "
+ "size is [%zd]\n", __func__, max_packet_size,
+ (1 + s->packet_size_len + 1
+ + s->block_aligned_filename_size));
+ rc = -EINVAL;
+ goto out;
+ }
+ (*packet_size) += s->packet_size_len;
+ ecryptfs_to_hex(s->fnek_sig_hex, &data[(*packet_size)],
+ ECRYPTFS_SIG_SIZE);
+ s->fnek_sig_hex[ECRYPTFS_SIG_SIZE_HEX] = '\0';
+ (*packet_size) += ECRYPTFS_SIG_SIZE;
+ s->cipher_code = data[(*packet_size)++];
+ rc = ecryptfs_cipher_code_to_string(s->cipher_string, s->cipher_code);
+ if (rc) {
+ printk(KERN_WARNING "%s: Cipher code [%d] is invalid\n",
+ __func__, s->cipher_code);
+ goto out;
+ }
+ rc = ecryptfs_get_tfm_and_mutex_for_cipher_name(&s->desc.tfm,
+ &s->tfm_mutex,
+ s->cipher_string);
+ if (unlikely(rc)) {
+ printk(KERN_ERR "Internal error whilst attempting to get "
+ "tfm and mutex for cipher name [%s]; rc = [%d]\n",
+ s->cipher_string, rc);
+ goto out;
+ }
+ mutex_lock(s->tfm_mutex);
+ rc = virt_to_scatterlist(&data[(*packet_size)],
+ s->block_aligned_filename_size, &s->src_sg, 1);
+ if (rc != 1) {
+ printk(KERN_ERR "%s: Internal error whilst attempting to "
+ "convert encrypted filename memory to scatterlist; "
+ "expected rc = 1; got rc = [%d]. "
+ "block_aligned_filename_size = [%zd]\n", __func__, rc,
+ s->block_aligned_filename_size);
+ goto out_unlock;
+ }
+ (*packet_size) += s->block_aligned_filename_size;
+ s->decrypted_filename = kmalloc(s->block_aligned_filename_size,
+ GFP_KERNEL);
+ if (!s->decrypted_filename) {
+ printk(KERN_ERR "%s: Out of memory whilst attempting to "
+ "kmalloc [%zd] bytes\n", __func__,
+ s->block_aligned_filename_size);
+ rc = -ENOMEM;
+ goto out_unlock;
+ }
+ rc = virt_to_scatterlist(s->decrypted_filename,
+ s->block_aligned_filename_size, &s->dst_sg, 1);
+ if (rc != 1) {
+ printk(KERN_ERR "%s: Internal error whilst attempting to "
+ "convert decrypted filename memory to scatterlist; "
+ "expected rc = 1; got rc = [%d]. "
+ "block_aligned_filename_size = [%zd]\n", __func__, rc,
+ s->block_aligned_filename_size);
+ goto out_free_unlock;
+ }
+ /* The characters in the first block effectively do the job of
+ * the IV here, so we just use 0's for the IV. Note the
+ * constraint that ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES
+ * >= ECRYPTFS_MAX_IV_BYTES. */
+ memset(s->iv, 0, ECRYPTFS_MAX_IV_BYTES);
+ s->desc.info = s->iv;
+ rc = ecryptfs_find_auth_tok_for_sig(&s->auth_tok, mount_crypt_stat,
+ s->fnek_sig_hex);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to find auth tok for "
+ "fnek sig [%s]; rc = [%d]\n", __func__, s->fnek_sig_hex,
+ rc);
+ goto out_free_unlock;
+ }
+ /* TODO: Support other key modules than passphrase for
+ * filename encryption */
+ BUG_ON(s->auth_tok->token_type != ECRYPTFS_PASSWORD);
+ rc = crypto_blkcipher_setkey(
+ s->desc.tfm,
+ s->auth_tok->token.password.session_key_encryption_key,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes);
+ if (rc < 0) {
+ printk(KERN_ERR "%s: Error setting key for crypto context; "
+ "rc = [%d]. s->auth_tok->token.password.session_key_"
+ "encryption_key = [0x%p]; mount_crypt_stat->"
+ "global_default_fn_cipher_key_bytes = [%zd]\n", __func__,
+ rc,
+ s->auth_tok->token.password.session_key_encryption_key,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes);
+ goto out_free_unlock;
+ }
+ rc = crypto_blkcipher_decrypt_iv(&s->desc, &s->dst_sg, &s->src_sg,
+ s->block_aligned_filename_size);
+ if (rc) {
+ printk(KERN_ERR "%s: Error attempting to decrypt filename; "
+ "rc = [%d]\n", __func__, rc);
+ goto out_free_unlock;
+ }
+ s->i = 0;
+ while (s->decrypted_filename[s->i] != '\0'
+ && s->i < s->block_aligned_filename_size)
+ s->i++;
+ if (s->i == s->block_aligned_filename_size) {
+ printk(KERN_WARNING "%s: Invalid tag 70 packet; could not "
+ "find valid separator between random characters and "
+ "the filename\n", __func__);
+ rc = -EINVAL;
+ goto out_free_unlock;
+ }
+ s->i++;
+ (*filename_size) = (s->block_aligned_filename_size - s->i);
+ if (!((*filename_size) > 0 && (*filename_size < PATH_MAX))) {
+ printk(KERN_WARNING "%s: Filename size is [%zd], which is "
+ "invalid\n", __func__, (*filename_size));
+ rc = -EINVAL;
+ goto out_free_unlock;
+ }
+ (*filename) = kmalloc(((*filename_size) + 1), GFP_KERNEL);
+ if (!(*filename)) {
+ printk(KERN_ERR "%s: Out of memory whilst attempting to "
+ "kmalloc [%zd] bytes\n", __func__,
+ ((*filename_size) + 1));
+ rc = -ENOMEM;
+ goto out_free_unlock;
+ }
+ memcpy((*filename), &s->decrypted_filename[s->i], (*filename_size));
+ (*filename)[(*filename_size)] = '\0';
+out_free_unlock:
+ kfree(s->decrypted_filename);
+out_unlock:
+ mutex_unlock(s->tfm_mutex);
+out:
+ if (rc) {
+ (*packet_size) = 0;
+ (*filename_size) = 0;
+ (*filename) = NULL;
+ }
+ kfree(s);
+ return rc;
+}
+
+static int
ecryptfs_get_auth_tok_sig(char **sig, struct ecryptfs_auth_tok *auth_tok)
{
int rc = 0;
@@ -897,30 +1471,6 @@ out:
return rc;
}
-static int
-ecryptfs_find_global_auth_tok_for_sig(
- struct ecryptfs_global_auth_tok **global_auth_tok,
- struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *sig)
-{
- struct ecryptfs_global_auth_tok *walker;
- int rc = 0;
-
- (*global_auth_tok) = NULL;
- mutex_lock(&mount_crypt_stat->global_auth_tok_list_mutex);
- list_for_each_entry(walker,
- &mount_crypt_stat->global_auth_tok_list,
- mount_crypt_stat_list) {
- if (memcmp(walker->sig, sig, ECRYPTFS_SIG_SIZE_HEX) == 0) {
- (*global_auth_tok) = walker;
- goto out;
- }
- }
- rc = -EINVAL;
-out:
- mutex_unlock(&mount_crypt_stat->global_auth_tok_list_mutex);
- return rc;
-}
-
/**
* ecryptfs_verify_version
* @version: The version number to confirm
@@ -990,43 +1540,6 @@ out:
}
/**
- * ecryptfs_find_auth_tok_for_sig
- * @auth_tok: Set to the matching auth_tok; NULL if not found
- * @crypt_stat: inode crypt_stat crypto context
- * @sig: Sig of auth_tok to find
- *
- * For now, this function simply looks at the registered auth_tok's
- * linked off the mount_crypt_stat, so all the auth_toks that can be
- * used must be registered at mount time. This function could
- * potentially try a lot harder to find auth_tok's (e.g., by calling
- * out to ecryptfsd to dynamically retrieve an auth_tok object) so
- * that static registration of auth_tok's will no longer be necessary.
- *
- * Returns zero on no error; non-zero on error
- */
-static int
-ecryptfs_find_auth_tok_for_sig(
- struct ecryptfs_auth_tok **auth_tok,
- struct ecryptfs_crypt_stat *crypt_stat, char *sig)
-{
- struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
- crypt_stat->mount_crypt_stat;
- struct ecryptfs_global_auth_tok *global_auth_tok;
- int rc = 0;
-
- (*auth_tok) = NULL;
- if (ecryptfs_find_global_auth_tok_for_sig(&global_auth_tok,
- mount_crypt_stat, sig)) {
- struct key *auth_tok_key;
-
- rc = ecryptfs_keyring_auth_tok_for_sig(&auth_tok_key, auth_tok,
- sig);
- } else
- (*auth_tok) = global_auth_tok->global_auth_tok;
- return rc;
-}
-
-/**
* decrypt_passphrase_encrypted_session_key - Decrypt the session key with the given auth_tok.
* @auth_tok: The passphrase authentication token to use to encrypt the FEK
* @crypt_stat: The cryptographic context
@@ -1256,7 +1769,8 @@ find_next_matching_auth_tok:
rc = -EINVAL;
goto out_wipe_list;
}
- ecryptfs_find_auth_tok_for_sig(&matching_auth_tok, crypt_stat,
+ ecryptfs_find_auth_tok_for_sig(&matching_auth_tok,
+ crypt_stat->mount_crypt_stat,
candidate_auth_tok_sig);
if (matching_auth_tok) {
found_auth_tok = 1;
@@ -1336,7 +1850,9 @@ pki_encrypt_session_key(struct ecryptfs_auth_tok *auth_tok,
int rc;
rc = write_tag_66_packet(auth_tok->token.private_key.signature,
- ecryptfs_code_for_cipher_string(crypt_stat),
+ ecryptfs_code_for_cipher_string(
+ crypt_stat->cipher,
+ crypt_stat->key_size),
crypt_stat, &payload, &payload_len);
if (rc) {
ecryptfs_printk(KERN_ERR, "Error generating tag 66 packet\n");
@@ -1696,7 +2212,8 @@ encrypted_session_key_set:
dest[(*packet_size)++] = 0x04; /* version 4 */
/* TODO: Break from RFC2440 so that arbitrary ciphers can be
* specified with strings */
- cipher_code = ecryptfs_code_for_cipher_string(crypt_stat);
+ cipher_code = ecryptfs_code_for_cipher_string(crypt_stat->cipher,
+ crypt_stat->key_size);
if (cipher_code == 0) {
ecryptfs_printk(KERN_WARNING, "Unable to generate code for "
"cipher [%s]\n", crypt_stat->cipher);
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index fd630713c5c..789cf2e1be1 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -206,7 +206,9 @@ enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig,
ecryptfs_opt_cipher, ecryptfs_opt_ecryptfs_cipher,
ecryptfs_opt_ecryptfs_key_bytes,
ecryptfs_opt_passthrough, ecryptfs_opt_xattr_metadata,
- ecryptfs_opt_encrypted_view, ecryptfs_opt_err };
+ ecryptfs_opt_encrypted_view, ecryptfs_opt_fnek_sig,
+ ecryptfs_opt_fn_cipher, ecryptfs_opt_fn_cipher_key_bytes,
+ ecryptfs_opt_err };
static const match_table_t tokens = {
{ecryptfs_opt_sig, "sig=%s"},
@@ -217,6 +219,9 @@ static const match_table_t tokens = {
{ecryptfs_opt_passthrough, "ecryptfs_passthrough"},
{ecryptfs_opt_xattr_metadata, "ecryptfs_xattr_metadata"},
{ecryptfs_opt_encrypted_view, "ecryptfs_encrypted_view"},
+ {ecryptfs_opt_fnek_sig, "ecryptfs_fnek_sig=%s"},
+ {ecryptfs_opt_fn_cipher, "ecryptfs_fn_cipher=%s"},
+ {ecryptfs_opt_fn_cipher_key_bytes, "ecryptfs_fn_key_bytes=%u"},
{ecryptfs_opt_err, NULL}
};
@@ -281,8 +286,11 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
int rc = 0;
int sig_set = 0;
int cipher_name_set = 0;
+ int fn_cipher_name_set = 0;
int cipher_key_bytes;
int cipher_key_bytes_set = 0;
+ int fn_cipher_key_bytes;
+ int fn_cipher_key_bytes_set = 0;
struct ecryptfs_mount_crypt_stat *mount_crypt_stat =
&ecryptfs_superblock_to_private(sb)->mount_crypt_stat;
substring_t args[MAX_OPT_ARGS];
@@ -290,7 +298,12 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
char *sig_src;
char *cipher_name_dst;
char *cipher_name_src;
+ char *fn_cipher_name_dst;
+ char *fn_cipher_name_src;
+ char *fnek_dst;
+ char *fnek_src;
char *cipher_key_bytes_src;
+ char *fn_cipher_key_bytes_src;
if (!options) {
rc = -EINVAL;
@@ -322,10 +335,7 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
global_default_cipher_name;
strncpy(cipher_name_dst, cipher_name_src,
ECRYPTFS_MAX_CIPHER_NAME_SIZE);
- ecryptfs_printk(KERN_DEBUG,
- "The mount_crypt_stat "
- "global_default_cipher_name set to: "
- "[%s]\n", cipher_name_dst);
+ cipher_name_dst[ECRYPTFS_MAX_CIPHER_NAME_SIZE] = '\0';
cipher_name_set = 1;
break;
case ecryptfs_opt_ecryptfs_key_bytes:
@@ -335,11 +345,6 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
&cipher_key_bytes_src, 0);
mount_crypt_stat->global_default_cipher_key_size =
cipher_key_bytes;
- ecryptfs_printk(KERN_DEBUG,
- "The mount_crypt_stat "
- "global_default_cipher_key_size "
- "set to: [%d]\n", mount_crypt_stat->
- global_default_cipher_key_size);
cipher_key_bytes_set = 1;
break;
case ecryptfs_opt_passthrough:
@@ -356,11 +361,51 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
mount_crypt_stat->flags |=
ECRYPTFS_ENCRYPTED_VIEW_ENABLED;
break;
+ case ecryptfs_opt_fnek_sig:
+ fnek_src = args[0].from;
+ fnek_dst =
+ mount_crypt_stat->global_default_fnek_sig;
+ strncpy(fnek_dst, fnek_src, ECRYPTFS_SIG_SIZE_HEX);
+ mount_crypt_stat->global_default_fnek_sig[
+ ECRYPTFS_SIG_SIZE_HEX] = '\0';
+ rc = ecryptfs_add_global_auth_tok(
+ mount_crypt_stat,
+ mount_crypt_stat->global_default_fnek_sig);
+ if (rc) {
+ printk(KERN_ERR "Error attempting to register "
+ "global fnek sig [%s]; rc = [%d]\n",
+ mount_crypt_stat->global_default_fnek_sig,
+ rc);
+ goto out;
+ }
+ mount_crypt_stat->flags |=
+ (ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES
+ | ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK);
+ break;
+ case ecryptfs_opt_fn_cipher:
+ fn_cipher_name_src = args[0].from;
+ fn_cipher_name_dst =
+ mount_crypt_stat->global_default_fn_cipher_name;
+ strncpy(fn_cipher_name_dst, fn_cipher_name_src,
+ ECRYPTFS_MAX_CIPHER_NAME_SIZE);
+ mount_crypt_stat->global_default_fn_cipher_name[
+ ECRYPTFS_MAX_CIPHER_NAME_SIZE] = '\0';
+ fn_cipher_name_set = 1;
+ break;
+ case ecryptfs_opt_fn_cipher_key_bytes:
+ fn_cipher_key_bytes_src = args[0].from;
+ fn_cipher_key_bytes =
+ (int)simple_strtol(fn_cipher_key_bytes_src,
+ &fn_cipher_key_bytes_src, 0);
+ mount_crypt_stat->global_default_fn_cipher_key_bytes =
+ fn_cipher_key_bytes;
+ fn_cipher_key_bytes_set = 1;
+ break;
case ecryptfs_opt_err:
default:
- ecryptfs_printk(KERN_WARNING,
- "eCryptfs: unrecognized option '%s'\n",
- p);
+ printk(KERN_WARNING
+ "%s: eCryptfs: unrecognized option [%s]\n",
+ __func__, p);
}
}
if (!sig_set) {
@@ -374,33 +419,60 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
int cipher_name_len = strlen(ECRYPTFS_DEFAULT_CIPHER);
BUG_ON(cipher_name_len >= ECRYPTFS_MAX_CIPHER_NAME_SIZE);
-
strcpy(mount_crypt_stat->global_default_cipher_name,
ECRYPTFS_DEFAULT_CIPHER);
}
- if (!cipher_key_bytes_set) {
+ if ((mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)
+ && !fn_cipher_name_set)
+ strcpy(mount_crypt_stat->global_default_fn_cipher_name,
+ mount_crypt_stat->global_default_cipher_name);
+ if (!cipher_key_bytes_set)
mount_crypt_stat->global_default_cipher_key_size = 0;
- }
+ if ((mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)
+ && !fn_cipher_key_bytes_set)
+ mount_crypt_stat->global_default_fn_cipher_key_bytes =
+ mount_crypt_stat->global_default_cipher_key_size;
mutex_lock(&key_tfm_list_mutex);
if (!ecryptfs_tfm_exists(mount_crypt_stat->global_default_cipher_name,
- NULL))
+ NULL)) {
rc = ecryptfs_add_new_key_tfm(
NULL, mount_crypt_stat->global_default_cipher_name,
mount_crypt_stat->global_default_cipher_key_size);
- mutex_unlock(&key_tfm_list_mutex);
- if (rc) {
- printk(KERN_ERR "Error attempting to initialize cipher with "
- "name = [%s] and key size = [%td]; rc = [%d]\n",
- mount_crypt_stat->global_default_cipher_name,
- mount_crypt_stat->global_default_cipher_key_size, rc);
- rc = -EINVAL;
- goto out;
+ if (rc) {
+ printk(KERN_ERR "Error attempting to initialize "
+ "cipher with name = [%s] and key size = [%td]; "
+ "rc = [%d]\n",
+ mount_crypt_stat->global_default_cipher_name,
+ mount_crypt_stat->global_default_cipher_key_size,
+ rc);
+ rc = -EINVAL;
+ mutex_unlock(&key_tfm_list_mutex);
+ goto out;
+ }
}
+ if ((mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)
+ && !ecryptfs_tfm_exists(
+ mount_crypt_stat->global_default_fn_cipher_name, NULL)) {
+ rc = ecryptfs_add_new_key_tfm(
+ NULL, mount_crypt_stat->global_default_fn_cipher_name,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes);
+ if (rc) {
+ printk(KERN_ERR "Error attempting to initialize "
+ "cipher with name = [%s] and key size = [%td]; "
+ "rc = [%d]\n",
+ mount_crypt_stat->global_default_fn_cipher_name,
+ mount_crypt_stat->global_default_fn_cipher_key_bytes,
+ rc);
+ rc = -EINVAL;
+ mutex_unlock(&key_tfm_list_mutex);
+ goto out;
+ }
+ }
+ mutex_unlock(&key_tfm_list_mutex);
rc = ecryptfs_init_global_auth_toks(mount_crypt_stat);
- if (rc) {
+ if (rc)
printk(KERN_WARNING "One or more global auth toks could not "
"properly register; rc = [%d]\n", rc);
- }
out:
return rc;
}
diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
index 6913f727624..96ef51489e0 100644
--- a/fs/ecryptfs/messaging.c
+++ b/fs/ecryptfs/messaging.c
@@ -193,7 +193,7 @@ ecryptfs_spawn_daemon(struct ecryptfs_daemon **daemon, uid_t euid,
(*daemon) = kzalloc(sizeof(**daemon), GFP_KERNEL);
if (!(*daemon)) {
rc = -ENOMEM;
- printk(KERN_ERR "%s: Failed to allocate [%Zd] bytes of "
+ printk(KERN_ERR "%s: Failed to allocate [%zd] bytes of "
"GFP_KERNEL memory\n", __func__, sizeof(**daemon));
goto out;
}
@@ -435,7 +435,7 @@ int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t euid,
msg_ctx->msg = kmalloc(msg_size, GFP_KERNEL);
if (!msg_ctx->msg) {
rc = -ENOMEM;
- printk(KERN_ERR "%s: Failed to allocate [%Zd] bytes of "
+ printk(KERN_ERR "%s: Failed to allocate [%zd] bytes of "
"GFP_KERNEL memory\n", __func__, msg_size);
goto unlock;
}
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index efd95a0ed1e..a67fea655f4 100644
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -199,7 +199,7 @@ int ecryptfs_send_miscdev(char *data, size_t data_size,
if (!msg_ctx->msg) {
rc = -ENOMEM;
printk(KERN_ERR "%s: Out of memory whilst attempting "
- "to kmalloc(%Zd, GFP_KERNEL)\n", __func__,
+ "to kmalloc(%zd, GFP_KERNEL)\n", __func__,
(sizeof(*msg_ctx->msg) + data_size));
goto out_unlock;
}
@@ -322,7 +322,7 @@ check_list:
if (count < total_length) {
rc = 0;
printk(KERN_WARNING "%s: Only given user buffer of "
- "size [%Zd], but we need [%Zd] to read the "
+ "size [%zd], but we need [%zd] to read the "
"pending message\n", __func__, count, total_length);
goto out_unlock_msg_ctx;
}
@@ -376,7 +376,7 @@ static int ecryptfs_miscdev_response(char *data, size_t data_size,
if ((sizeof(*msg) + msg->data_len) != data_size) {
printk(KERN_WARNING "%s: (sizeof(*msg) + msg->data_len) = "
- "[%Zd]; data_size = [%Zd]. Invalid packet.\n", __func__,
+ "[%zd]; data_size = [%zd]. Invalid packet.\n", __func__,
(sizeof(*msg) + msg->data_len), data_size);
rc = -EINVAL;
goto out;
@@ -421,7 +421,7 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
data = kmalloc(count, GFP_KERNEL);
if (!data) {
printk(KERN_ERR "%s: Out of memory whilst attempting to "
- "kmalloc([%Zd], GFP_KERNEL)\n", __func__, count);
+ "kmalloc([%zd], GFP_KERNEL)\n", __func__, count);
goto out;
}
rc = copy_from_user(data, buf, count);
@@ -436,8 +436,8 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
case ECRYPTFS_MSG_RESPONSE:
if (count < (1 + 4 + 1 + sizeof(struct ecryptfs_message))) {
printk(KERN_WARNING "%s: Minimum acceptable packet "
- "size is [%Zd], but amount of data written is "
- "only [%Zd]. Discarding response packet.\n",
+ "size is [%zd], but amount of data written is "
+ "only [%zd]. Discarding response packet.\n",
__func__,
(1 + 4 + 1 + sizeof(struct ecryptfs_message)),
count);
@@ -455,9 +455,9 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
}
i += packet_size_length;
if ((1 + 4 + packet_size_length + packet_size) != count) {
- printk(KERN_WARNING "%s: (1 + packet_size_length([%Zd])"
- " + packet_size([%Zd]))([%Zd]) != "
- "count([%Zd]). Invalid packet format.\n",
+ printk(KERN_WARNING "%s: (1 + packet_size_length([%zd])"
+ " + packet_size([%zd]))([%zd]) != "
+ "count([%zd]). Invalid packet format.\n",
__func__, packet_size_length, packet_size,
(1 + packet_size_length + packet_size), count);
goto out_free;
diff --git a/fs/exec.c b/fs/exec.c
index 3ef9cf9b187..71a6efe5d8b 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -51,6 +51,7 @@
#include <linux/audit.h>
#include <linux/tracehook.h>
#include <linux/kmod.h>
+#include <linux/fsnotify.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
@@ -132,6 +133,8 @@ asmlinkage long sys_uselib(const char __user * library)
if (IS_ERR(file))
goto out;
+ fsnotify_open(file->f_path.dentry);
+
error = -ENOEXEC;
if(file->f_op) {
struct linux_binfmt * fmt;
@@ -229,13 +232,13 @@ static void flush_arg_page(struct linux_binprm *bprm, unsigned long pos,
static int __bprm_mm_init(struct linux_binprm *bprm)
{
- int err = -ENOMEM;
+ int err;
struct vm_area_struct *vma = NULL;
struct mm_struct *mm = bprm->mm;
bprm->vma = vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
if (!vma)
- goto err;
+ return -ENOMEM;
down_write(&mm->mmap_sem);
vma->vm_mm = mm;
@@ -248,28 +251,20 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
*/
vma->vm_end = STACK_TOP_MAX;
vma->vm_start = vma->vm_end - PAGE_SIZE;
-
vma->vm_flags = VM_STACK_FLAGS;
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
err = insert_vm_struct(mm, vma);
- if (err) {
- up_write(&mm->mmap_sem);
+ if (err)
goto err;
- }
mm->stack_vm = mm->total_vm = 1;
up_write(&mm->mmap_sem);
-
bprm->p = vma->vm_end - sizeof(void *);
-
return 0;
-
err:
- if (vma) {
- bprm->vma = NULL;
- kmem_cache_free(vm_area_cachep, vma);
- }
-
+ up_write(&mm->mmap_sem);
+ bprm->vma = NULL;
+ kmem_cache_free(vm_area_cachep, vma);
return err;
}
@@ -684,6 +679,8 @@ struct file *open_exec(const char *name)
if (IS_ERR(file))
return file;
+ fsnotify_open(file->f_path.dentry);
+
err = deny_write_access(file);
if (err) {
fput(file);
@@ -1689,7 +1686,7 @@ int get_dumpable(struct mm_struct *mm)
return (ret >= 2) ? 2 : ret;
}
-int do_coredump(long signr, int exit_code, struct pt_regs * regs)
+void do_coredump(long signr, int exit_code, struct pt_regs *regs)
{
struct core_state core_state;
char corename[CORENAME_MAX_SIZE + 1];
@@ -1773,6 +1770,11 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
if (ispipe) {
helper_argv = argv_split(GFP_KERNEL, corename+1, &helper_argc);
+ if (!helper_argv) {
+ printk(KERN_WARNING "%s failed to allocate memory\n",
+ __func__);
+ goto fail_unlock;
+ }
/* Terminate the string before the first option */
delimit = strchr(corename, ' ');
if (delimit)
@@ -1840,5 +1842,5 @@ fail_unlock:
put_cred(cred);
coredump_finish(mm);
fail:
- return retval;
+ return;
}
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index c454d5db28a..66321a877e7 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -565,12 +565,8 @@ got:
inode->i_blocks = 0;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
memset(ei->i_data, 0, sizeof(ei->i_data));
- ei->i_flags = EXT2_I(dir)->i_flags & ~EXT2_BTREE_FL;
- if (S_ISLNK(mode))
- ei->i_flags &= ~(EXT2_IMMUTABLE_FL|EXT2_APPEND_FL);
- /* dirsync is only applied to directories */
- if (!S_ISDIR(mode))
- ei->i_flags &= ~EXT2_DIRSYNC_FL;
+ ei->i_flags =
+ ext2_mask_flags(mode, EXT2_I(dir)->i_flags & EXT2_FL_INHERITED);
ei->i_faddr = 0;
ei->i_frag_no = 0;
ei->i_frag_size = 0;
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 02b39a5deb7..23fff2f8778 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -498,8 +498,6 @@ static int ext2_alloc_branch(struct inode *inode,
* ext2_splice_branch - splice the allocated branch onto inode.
* @inode: owner
* @block: (logical) number of block we are adding
- * @chain: chain of indirect blocks (with a missing link - see
- * ext2_alloc_branch)
* @where: location of missing link
* @num: number of indirect blocks we are adding
* @blks: number of direct blocks we are adding
diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c
index de876fa793e..7cb4badef92 100644
--- a/fs/ext2/ioctl.c
+++ b/fs/ext2/ioctl.c
@@ -50,8 +50,7 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
goto setflags_out;
}
- if (!S_ISDIR(inode->i_mode))
- flags &= ~EXT2_DIRSYNC_FL;
+ flags = ext2_mask_flags(inode->i_mode, flags);
mutex_lock(&inode->i_mutex);
/* Is it quota file? Do not allow user to mess with it */
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 647cd888ac8..da8bdeaa2e6 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -132,6 +132,7 @@ static void ext2_put_super (struct super_block * sb)
percpu_counter_destroy(&sbi->s_dirs_counter);
brelse (sbi->s_sbh);
sb->s_fs_info = NULL;
+ kfree(sbi->s_blockgroup_lock);
kfree(sbi);
return;
@@ -756,6 +757,13 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
+
+ sbi->s_blockgroup_lock =
+ kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
+ if (!sbi->s_blockgroup_lock) {
+ kfree(sbi);
+ return -ENOMEM;
+ }
sb->s_fs_info = sbi;
sbi->s_sb_block = sb_block;
@@ -983,7 +991,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
printk ("EXT2-fs: not enough memory\n");
goto failed_mount;
}
- bgl_lock_init(&sbi->s_blockgroup_lock);
+ bgl_lock_init(sbi->s_blockgroup_lock);
sbi->s_debts = kcalloc(sbi->s_groups_count, sizeof(*sbi->s_debts), GFP_KERNEL);
if (!sbi->s_debts) {
printk ("EXT2-fs: not enough memory\n");
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 5655fbcbd11..8de6c720e51 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -559,12 +559,8 @@ got:
ei->i_dir_start_lookup = 0;
ei->i_disksize = 0;
- ei->i_flags = EXT3_I(dir)->i_flags & ~EXT3_INDEX_FL;
- if (S_ISLNK(mode))
- ei->i_flags &= ~(EXT3_IMMUTABLE_FL|EXT3_APPEND_FL);
- /* dirsync only applies to directories */
- if (!S_ISDIR(mode))
- ei->i_flags &= ~EXT3_DIRSYNC_FL;
+ ei->i_flags =
+ ext3_mask_flags(mode, EXT3_I(dir)->i_flags & EXT3_FL_INHERITED);
#ifdef EXT3_FRAGMENTS
ei->i_faddr = 0;
ei->i_frag_no = 0;
diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
index b7394d05ee8..5e86ce9a86e 100644
--- a/fs/ext3/ioctl.c
+++ b/fs/ext3/ioctl.c
@@ -53,8 +53,7 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
goto flags_out;
}
- if (!S_ISDIR(inode->i_mode))
- flags &= ~EXT3_DIRSYNC_FL;
+ flags = ext3_mask_flags(inode->i_mode, flags);
mutex_lock(&inode->i_mutex);
/* Is it quota file? Do not allow user to mess with it */
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 2c2d700c1cc..69a3d19ca9f 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -74,10 +74,6 @@ static struct buffer_head *ext3_append(handle_t *handle,
#define assert(test) J_ASSERT(test)
#endif
-#ifndef swap
-#define swap(x, y) do { typeof(x) z = x; x = y; y = z; } while (0)
-#endif
-
#ifdef DX_DEBUG
#define dxtrace(command) command
#else
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 6900ff05e3a..5d047a030a7 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -439,6 +439,7 @@ static void ext3_put_super (struct super_block * sb)
ext3_blkdev_remove(sbi);
}
sb->s_fs_info = NULL;
+ kfree(sbi->s_blockgroup_lock);
kfree(sbi);
return;
}
@@ -733,7 +734,9 @@ static struct dquot_operations ext3_quota_operations = {
.acquire_dquot = ext3_acquire_dquot,
.release_dquot = ext3_release_dquot,
.mark_dirty = ext3_mark_dquot_dirty,
- .write_info = ext3_write_info
+ .write_info = ext3_write_info,
+ .alloc_dquot = dquot_alloc,
+ .destroy_dquot = dquot_destroy,
};
static struct quotactl_ops ext3_qctl_operations = {
@@ -1056,8 +1059,7 @@ static int parse_options (char *options, struct super_block *sb,
case Opt_grpjquota:
qtype = GRPQUOTA;
set_qf_name:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
!sbi->s_qf_names[qtype]) {
printk(KERN_ERR
"EXT3-fs: Cannot change journaled "
@@ -1096,8 +1098,7 @@ set_qf_name:
case Opt_offgrpjquota:
qtype = GRPQUOTA;
clear_qf_name:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
sbi->s_qf_names[qtype]) {
printk(KERN_ERR "EXT3-fs: Cannot change "
"journaled quota options when "
@@ -1116,8 +1117,7 @@ clear_qf_name:
case Opt_jqfmt_vfsv0:
qfmt = QFMT_VFS_V0;
set_qf_format:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
sbi->s_jquota_fmt != qfmt) {
printk(KERN_ERR "EXT3-fs: Cannot change "
"journaled quota options when "
@@ -1136,8 +1136,7 @@ set_qf_format:
set_opt(sbi->s_mount_opt, GRPQUOTA);
break;
case Opt_noquota:
- if (sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) {
+ if (sb_any_quota_loaded(sb)) {
printk(KERN_ERR "EXT3-fs: Cannot change quota "
"options when quota turned on.\n");
return 0;
@@ -1569,6 +1568,13 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
+
+ sbi->s_blockgroup_lock =
+ kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
+ if (!sbi->s_blockgroup_lock) {
+ kfree(sbi);
+ return -ENOMEM;
+ }
sb->s_fs_info = sbi;
sbi->s_mount_opt = 0;
sbi->s_resuid = EXT3_DEF_RESUID;
@@ -1821,7 +1827,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
goto failed_mount;
}
- bgl_lock_init(&sbi->s_blockgroup_lock);
+ bgl_lock_init(sbi->s_blockgroup_lock);
for (i = 0; i < db_count; i++) {
block = descriptor_loc(sb, logic_sb_block, i);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index db1718833f5..c668e4377d7 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1247,11 +1247,11 @@ do { \
} while (0)
#ifdef CONFIG_SMP
-/* Each CPU can accumulate FBC_BATCH blocks in their local
+/* Each CPU can accumulate percpu_counter_batch blocks in their local
* counters. So we need to make sure we have free blocks more
- * than FBC_BATCH * nr_cpu_ids. Also add a window of 4 times.
+ * than percpu_counter_batch * nr_cpu_ids. Also add a window of 4 times.
*/
-#define EXT4_FREEBLOCKS_WATERMARK (4 * (FBC_BATCH * nr_cpu_ids))
+#define EXT4_FREEBLOCKS_WATERMARK (4 * (percpu_counter_batch * nr_cpu_ids))
#else
#define EXT4_FREEBLOCKS_WATERMARK 0
#endif
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 240cf0daad4..54bf0623a9a 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2533,7 +2533,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
*/
newdepth = ext_depth(inode);
/*
- * update the extent length after successfull insert of the
+ * update the extent length after successful insert of the
* split extent
*/
orig_ex.ee_len = cpu_to_le16(ee_len -
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 4cac8da4e0c..a6444cee0c7 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2592,7 +2592,7 @@ static int ext4_nonda_switch(struct super_block *sb)
/*
* switch to non delalloc mode if we are running low
* on free block. The free block accounting via percpu
- * counters can get slightly wrong with FBC_BATCH getting
+ * counters can get slightly wrong with percpu_counter_batch getting
* accumulated on each CPU without updating global counters
* Delalloc need an accurate free block accounting. So switch
* to non delalloc when we are near to error range.
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 183a09a8b14..fec0b4c2f5f 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -74,10 +74,6 @@ static struct buffer_head *ext4_append(handle_t *handle,
#define assert(test) J_ASSERT(test)
#endif
-#ifndef swap
-#define swap(x, y) do { typeof(x) z = x; x = y; y = z; } while (0)
-#endif
-
#ifdef DX_DEBUG
#define dxtrace(command) command
#else
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index acb69c00fd4..8f7e0be8ab1 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -953,7 +953,9 @@ static struct dquot_operations ext4_quota_operations = {
.acquire_dquot = ext4_acquire_dquot,
.release_dquot = ext4_release_dquot,
.mark_dirty = ext4_mark_dquot_dirty,
- .write_info = ext4_write_info
+ .write_info = ext4_write_info,
+ .alloc_dquot = dquot_alloc,
+ .destroy_dquot = dquot_destroy,
};
static struct quotactl_ops ext4_qctl_operations = {
@@ -1302,8 +1304,7 @@ static int parse_options(char *options, struct super_block *sb,
case Opt_grpjquota:
qtype = GRPQUOTA;
set_qf_name:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
!sbi->s_qf_names[qtype]) {
printk(KERN_ERR
"EXT4-fs: Cannot change journaled "
@@ -1342,8 +1343,7 @@ set_qf_name:
case Opt_offgrpjquota:
qtype = GRPQUOTA;
clear_qf_name:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
sbi->s_qf_names[qtype]) {
printk(KERN_ERR "EXT4-fs: Cannot change "
"journaled quota options when "
@@ -1362,8 +1362,7 @@ clear_qf_name:
case Opt_jqfmt_vfsv0:
qfmt = QFMT_VFS_V0;
set_qf_format:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
sbi->s_jquota_fmt != qfmt) {
printk(KERN_ERR "EXT4-fs: Cannot change "
"journaled quota options when "
@@ -1382,7 +1381,7 @@ set_qf_format:
set_opt(sbi->s_mount_opt, GRPQUOTA);
break;
case Opt_noquota:
- if (sb_any_quota_enabled(sb)) {
+ if (sb_any_quota_loaded(sb)) {
printk(KERN_ERR "EXT4-fs: Cannot change quota "
"options when quota turned on.\n");
return 0;
diff --git a/fs/filesystems.c b/fs/filesystems.c
index d0e20ced62d..d488dcd7f2b 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -253,24 +253,27 @@ static int __init proc_filesystems_init(void)
module_init(proc_filesystems_init);
#endif
-struct file_system_type *get_fs_type(const char *name)
+static struct file_system_type *__get_fs_type(const char *name, int len)
{
struct file_system_type *fs;
- const char *dot = strchr(name, '.');
- unsigned len = dot ? dot - name : strlen(name);
read_lock(&file_systems_lock);
fs = *(find_filesystem(name, len));
if (fs && !try_module_get(fs->owner))
fs = NULL;
read_unlock(&file_systems_lock);
- if (!fs && (request_module("%.*s", len, name) == 0)) {
- read_lock(&file_systems_lock);
- fs = *(find_filesystem(name, len));
- if (fs && !try_module_get(fs->owner))
- fs = NULL;
- read_unlock(&file_systems_lock);
- }
+ return fs;
+}
+
+struct file_system_type *get_fs_type(const char *name)
+{
+ struct file_system_type *fs;
+ const char *dot = strchr(name, '.');
+ int len = dot ? dot - name : strlen(name);
+
+ fs = __get_fs_type(name, len);
+ if (!fs && (request_module("%.*s", len, name) == 0))
+ fs = __get_fs_type(name, len);
if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
put_filesystem(fs);
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index d0ff0b8cf30..e5eaa62fd17 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -421,9 +421,6 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
* If we're a pdlfush thread, then implement pdflush collision avoidance
* against the entire list.
*
- * WB_SYNC_HOLD is a hack for sys_sync(): reattach the inode to sb->s_dirty so
- * that it can be located for waiting on in __writeback_single_inode().
- *
* If `bdi' is non-zero then we're being asked to writeback a specific queue.
* This function assumes that the blockdev superblock's inodes are backed by
* a variety of queues, so all inodes are searched. For other superblocks,
@@ -443,6 +440,7 @@ void generic_sync_sb_inodes(struct super_block *sb,
struct writeback_control *wbc)
{
const unsigned long start = jiffies; /* livelock avoidance */
+ int sync = wbc->sync_mode == WB_SYNC_ALL;
spin_lock(&inode_lock);
if (!wbc->for_kupdate || list_empty(&sb->s_io))
@@ -499,10 +497,6 @@ void generic_sync_sb_inodes(struct super_block *sb,
__iget(inode);
pages_skipped = wbc->pages_skipped;
__writeback_single_inode(inode, wbc);
- if (wbc->sync_mode == WB_SYNC_HOLD) {
- inode->dirtied_when = jiffies;
- list_move(&inode->i_list, &sb->s_dirty);
- }
if (current_is_pdflush())
writeback_release(bdi);
if (wbc->pages_skipped != pages_skipped) {
@@ -523,7 +517,49 @@ void generic_sync_sb_inodes(struct super_block *sb,
if (!list_empty(&sb->s_more_io))
wbc->more_io = 1;
}
- spin_unlock(&inode_lock);
+
+ if (sync) {
+ struct inode *inode, *old_inode = NULL;
+
+ /*
+ * Data integrity sync. Must wait for all pages under writeback,
+ * because there may have been pages dirtied before our sync
+ * call, but which had writeout started before we write it out.
+ * In which case, the inode may not be on the dirty list, but
+ * we still have to wait for that writeout.
+ */
+ list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+ struct address_space *mapping;
+
+ if (inode->i_state & (I_FREEING|I_WILL_FREE))
+ continue;
+ mapping = inode->i_mapping;
+ if (mapping->nrpages == 0)
+ continue;
+ __iget(inode);
+ spin_unlock(&inode_lock);
+ /*
+ * We hold a reference to 'inode' so it couldn't have
+ * been removed from s_inodes list while we dropped the
+ * inode_lock. We cannot iput the inode now as we can
+ * be holding the last reference and we cannot iput it
+ * under inode_lock. So we keep the reference and iput
+ * it later.
+ */
+ iput(old_inode);
+ old_inode = inode;
+
+ filemap_fdatawait(mapping);
+
+ cond_resched();
+
+ spin_lock(&inode_lock);
+ }
+ spin_unlock(&inode_lock);
+ iput(old_inode);
+ } else
+ spin_unlock(&inode_lock);
+
return; /* Leave any unwritten inodes on s_io */
}
EXPORT_SYMBOL_GPL(generic_sync_sb_inodes);
@@ -588,8 +624,7 @@ restart:
/*
* writeback and wait upon the filesystem's dirty inodes. The caller will
- * do this in two passes - one to write, and one to wait. WB_SYNC_HOLD is
- * used to park the written inodes on sb->s_dirty for the wait pass.
+ * do this in two passes - one to write, and one to wait.
*
* A finite limit is set on the number of pages which will be written.
* To prevent infinite livelock of sys_sync().
@@ -600,30 +635,21 @@ restart:
void sync_inodes_sb(struct super_block *sb, int wait)
{
struct writeback_control wbc = {
- .sync_mode = wait ? WB_SYNC_ALL : WB_SYNC_HOLD,
+ .sync_mode = wait ? WB_SYNC_ALL : WB_SYNC_NONE,
.range_start = 0,
.range_end = LLONG_MAX,
};
- unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
- unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
- wbc.nr_to_write = nr_dirty + nr_unstable +
- (inodes_stat.nr_inodes - inodes_stat.nr_unused) +
- nr_dirty + nr_unstable;
- wbc.nr_to_write += wbc.nr_to_write / 2; /* Bit more for luck */
- sync_sb_inodes(sb, &wbc);
-}
+ if (!wait) {
+ unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
+ unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
-/*
- * Rather lame livelock avoidance.
- */
-static void set_sb_syncing(int val)
-{
- struct super_block *sb;
- spin_lock(&sb_lock);
- list_for_each_entry_reverse(sb, &super_blocks, s_list)
- sb->s_syncing = val;
- spin_unlock(&sb_lock);
+ wbc.nr_to_write = nr_dirty + nr_unstable +
+ (inodes_stat.nr_inodes - inodes_stat.nr_unused);
+ } else
+ wbc.nr_to_write = LONG_MAX; /* doesn't actually matter */
+
+ sync_sb_inodes(sb, &wbc);
}
/**
@@ -652,9 +678,6 @@ static void __sync_inodes(int wait)
spin_lock(&sb_lock);
restart:
list_for_each_entry(sb, &super_blocks, s_list) {
- if (sb->s_syncing)
- continue;
- sb->s_syncing = 1;
sb->s_count++;
spin_unlock(&sb_lock);
down_read(&sb->s_umount);
@@ -672,13 +695,10 @@ restart:
void sync_inodes(int wait)
{
- set_sb_syncing(0);
__sync_inodes(0);
- if (wait) {
- set_sb_syncing(0);
+ if (wait)
__sync_inodes(1);
- }
}
/**
diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index 4f3cab32141..99c99dfb037 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -1,6 +1,6 @@
/*
FUSE: Filesystem in Userspace
- Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+ Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
@@ -48,11 +48,13 @@ static ssize_t fuse_conn_waiting_read(struct file *file, char __user *buf,
size_t size;
if (!*ppos) {
+ long value;
struct fuse_conn *fc = fuse_ctl_file_conn_get(file);
if (!fc)
return 0;
- file->private_data=(void *)(long)atomic_read(&fc->num_waiting);
+ value = atomic_read(&fc->num_waiting);
+ file->private_data = (void *)value;
fuse_conn_put(fc);
}
size = sprintf(tmp, "%ld\n", (long)file->private_data);
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index fba571648a8..e0c7ada08a1 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1,6 +1,6 @@
/*
FUSE: Filesystem in Userspace
- Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+ Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
@@ -269,7 +269,7 @@ static void flush_bg_queue(struct fuse_conn *fc)
* Called with fc->lock, unlocks it
*/
static void request_end(struct fuse_conn *fc, struct fuse_req *req)
- __releases(fc->lock)
+__releases(&fc->lock)
{
void (*end) (struct fuse_conn *, struct fuse_req *) = req->end;
req->end = NULL;
@@ -293,13 +293,13 @@ static void request_end(struct fuse_conn *fc, struct fuse_req *req)
wake_up(&req->waitq);
if (end)
end(fc, req);
- else
- fuse_put_request(fc, req);
+ fuse_put_request(fc, req);
}
static void wait_answer_interruptible(struct fuse_conn *fc,
struct fuse_req *req)
- __releases(fc->lock) __acquires(fc->lock)
+__releases(&fc->lock)
+__acquires(&fc->lock)
{
if (signal_pending(current))
return;
@@ -317,7 +317,8 @@ static void queue_interrupt(struct fuse_conn *fc, struct fuse_req *req)
}
static void request_wait_answer(struct fuse_conn *fc, struct fuse_req *req)
- __releases(fc->lock) __acquires(fc->lock)
+__releases(&fc->lock)
+__acquires(&fc->lock)
{
if (!fc->no_interrupt) {
/* Any signal may interrupt this */
@@ -380,7 +381,7 @@ static void request_wait_answer(struct fuse_conn *fc, struct fuse_req *req)
}
}
-void request_send(struct fuse_conn *fc, struct fuse_req *req)
+void fuse_request_send(struct fuse_conn *fc, struct fuse_req *req)
{
req->isreply = 1;
spin_lock(&fc->lock);
@@ -399,8 +400,8 @@ void request_send(struct fuse_conn *fc, struct fuse_req *req)
spin_unlock(&fc->lock);
}
-static void request_send_nowait_locked(struct fuse_conn *fc,
- struct fuse_req *req)
+static void fuse_request_send_nowait_locked(struct fuse_conn *fc,
+ struct fuse_req *req)
{
req->background = 1;
fc->num_background++;
@@ -414,11 +415,11 @@ static void request_send_nowait_locked(struct fuse_conn *fc,
flush_bg_queue(fc);
}
-static void request_send_nowait(struct fuse_conn *fc, struct fuse_req *req)
+static void fuse_request_send_nowait(struct fuse_conn *fc, struct fuse_req *req)
{
spin_lock(&fc->lock);
if (fc->connected) {
- request_send_nowait_locked(fc, req);
+ fuse_request_send_nowait_locked(fc, req);
spin_unlock(&fc->lock);
} else {
req->out.h.error = -ENOTCONN;
@@ -426,16 +427,16 @@ static void request_send_nowait(struct fuse_conn *fc, struct fuse_req *req)
}
}
-void request_send_noreply(struct fuse_conn *fc, struct fuse_req *req)
+void fuse_request_send_noreply(struct fuse_conn *fc, struct fuse_req *req)
{
req->isreply = 0;
- request_send_nowait(fc, req);
+ fuse_request_send_nowait(fc, req);
}
-void request_send_background(struct fuse_conn *fc, struct fuse_req *req)
+void fuse_request_send_background(struct fuse_conn *fc, struct fuse_req *req)
{
req->isreply = 1;
- request_send_nowait(fc, req);
+ fuse_request_send_nowait(fc, req);
}
/*
@@ -443,10 +444,11 @@ void request_send_background(struct fuse_conn *fc, struct fuse_req *req)
*
* fc->connected must have been checked previously
*/
-void request_send_background_locked(struct fuse_conn *fc, struct fuse_req *req)
+void fuse_request_send_background_locked(struct fuse_conn *fc,
+ struct fuse_req *req)
{
req->isreply = 1;
- request_send_nowait_locked(fc, req);
+ fuse_request_send_nowait_locked(fc, req);
}
/*
@@ -539,8 +541,8 @@ static int fuse_copy_fill(struct fuse_copy_state *cs)
BUG_ON(!cs->nr_segs);
cs->seglen = cs->iov[0].iov_len;
cs->addr = (unsigned long) cs->iov[0].iov_base;
- cs->iov ++;
- cs->nr_segs --;
+ cs->iov++;
+ cs->nr_segs--;
}
down_read(&current->mm->mmap_sem);
err = get_user_pages(current, current->mm, cs->addr, 1, cs->write, 0,
@@ -589,9 +591,11 @@ static int fuse_copy_page(struct fuse_copy_state *cs, struct page *page,
kunmap_atomic(mapaddr, KM_USER1);
}
while (count) {
- int err;
- if (!cs->len && (err = fuse_copy_fill(cs)))
- return err;
+ if (!cs->len) {
+ int err = fuse_copy_fill(cs);
+ if (err)
+ return err;
+ }
if (page) {
void *mapaddr = kmap_atomic(page, KM_USER1);
void *buf = mapaddr + offset;
@@ -631,9 +635,11 @@ static int fuse_copy_pages(struct fuse_copy_state *cs, unsigned nbytes,
static int fuse_copy_one(struct fuse_copy_state *cs, void *val, unsigned size)
{
while (size) {
- int err;
- if (!cs->len && (err = fuse_copy_fill(cs)))
- return err;
+ if (!cs->len) {
+ int err = fuse_copy_fill(cs);
+ if (err)
+ return err;
+ }
fuse_copy_do(cs, &val, &size);
}
return 0;
@@ -664,6 +670,8 @@ static int request_pending(struct fuse_conn *fc)
/* Wait until a request is available on the pending list */
static void request_wait(struct fuse_conn *fc)
+__releases(&fc->lock)
+__acquires(&fc->lock)
{
DECLARE_WAITQUEUE(wait, current);
@@ -691,7 +699,7 @@ static void request_wait(struct fuse_conn *fc)
*/
static int fuse_read_interrupt(struct fuse_conn *fc, struct fuse_req *req,
const struct iovec *iov, unsigned long nr_segs)
- __releases(fc->lock)
+__releases(&fc->lock)
{
struct fuse_copy_state cs;
struct fuse_in_header ih;
@@ -813,6 +821,34 @@ static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
return err;
}
+static int fuse_notify_poll(struct fuse_conn *fc, unsigned int size,
+ struct fuse_copy_state *cs)
+{
+ struct fuse_notify_poll_wakeup_out outarg;
+ int err;
+
+ if (size != sizeof(outarg))
+ return -EINVAL;
+
+ err = fuse_copy_one(cs, &outarg, sizeof(outarg));
+ if (err)
+ return err;
+
+ return fuse_notify_poll_wakeup(fc, &outarg);
+}
+
+static int fuse_notify(struct fuse_conn *fc, enum fuse_notify_code code,
+ unsigned int size, struct fuse_copy_state *cs)
+{
+ switch (code) {
+ case FUSE_NOTIFY_POLL:
+ return fuse_notify_poll(fc, size, cs);
+
+ default:
+ return -EINVAL;
+ }
+}
+
/* Look up request on processing list by unique ID */
static struct fuse_req *request_find(struct fuse_conn *fc, u64 unique)
{
@@ -876,9 +912,23 @@ static ssize_t fuse_dev_write(struct kiocb *iocb, const struct iovec *iov,
err = fuse_copy_one(&cs, &oh, sizeof(oh));
if (err)
goto err_finish;
+
+ err = -EINVAL;
+ if (oh.len != nbytes)
+ goto err_finish;
+
+ /*
+ * Zero oh.unique indicates unsolicited notification message
+ * and error contains notification code.
+ */
+ if (!oh.unique) {
+ err = fuse_notify(fc, oh.error, nbytes - sizeof(oh), &cs);
+ fuse_copy_finish(&cs);
+ return err ? err : nbytes;
+ }
+
err = -EINVAL;
- if (!oh.unique || oh.error <= -1000 || oh.error > 0 ||
- oh.len != nbytes)
+ if (oh.error <= -1000 || oh.error > 0)
goto err_finish;
spin_lock(&fc->lock);
@@ -966,6 +1016,8 @@ static unsigned fuse_dev_poll(struct file *file, poll_table *wait)
* This function releases and reacquires fc->lock
*/
static void end_requests(struct fuse_conn *fc, struct list_head *head)
+__releases(&fc->lock)
+__acquires(&fc->lock)
{
while (!list_empty(head)) {
struct fuse_req *req;
@@ -988,7 +1040,8 @@ static void end_requests(struct fuse_conn *fc, struct list_head *head)
* locked).
*/
static void end_io_requests(struct fuse_conn *fc)
- __releases(fc->lock) __acquires(fc->lock)
+__releases(&fc->lock)
+__acquires(&fc->lock)
{
while (!list_empty(&fc->io)) {
struct fuse_req *req =
@@ -1002,11 +1055,11 @@ static void end_io_requests(struct fuse_conn *fc)
wake_up(&req->waitq);
if (end) {
req->end = NULL;
- /* The end function will consume this reference */
__fuse_get_request(req);
spin_unlock(&fc->lock);
wait_event(req->waitq, !req->locked);
end(fc, req);
+ fuse_put_request(fc, req);
spin_lock(&fc->lock);
}
}
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 95bc22bdd06..fdff346e96f 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1,6 +1,6 @@
/*
FUSE: Filesystem in Userspace
- Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+ Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
@@ -189,7 +189,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
parent = dget_parent(entry);
fuse_lookup_init(fc, req, get_node_id(parent->d_inode),
&entry->d_name, &outarg);
- request_send(fc, req);
+ fuse_request_send(fc, req);
dput(parent);
err = req->out.h.error;
fuse_put_request(fc, req);
@@ -204,7 +204,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
return 0;
}
spin_lock(&fc->lock);
- fi->nlookup ++;
+ fi->nlookup++;
spin_unlock(&fc->lock);
}
fuse_put_request(fc, forget_req);
@@ -283,7 +283,7 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, struct qstr *name,
attr_version = fuse_get_attr_version(fc);
fuse_lookup_init(fc, req, nodeid, name, outarg);
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
/* Zero nodeid is same as -ENOENT, but with valid timeout */
@@ -369,7 +369,7 @@ static void fuse_sync_release(struct fuse_conn *fc, struct fuse_file *ff,
{
fuse_release_fill(ff, nodeid, flags, FUSE_RELEASE);
ff->reserved_req->force = 1;
- request_send(fc, ff->reserved_req);
+ fuse_request_send(fc, ff->reserved_req);
fuse_put_request(fc, ff->reserved_req);
kfree(ff);
}
@@ -408,7 +408,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
goto out_put_forget_req;
err = -ENOMEM;
- ff = fuse_file_alloc();
+ ff = fuse_file_alloc(fc);
if (!ff)
goto out_put_request;
@@ -432,7 +432,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
req->out.args[0].value = &outentry;
req->out.args[1].size = sizeof(outopen);
req->out.args[1].value = &outopen;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
if (err) {
if (err == -ENOSYS)
@@ -502,7 +502,7 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
else
req->out.args[0].size = sizeof(outarg);
req->out.args[0].value = &outarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err)
@@ -631,15 +631,17 @@ static int fuse_unlink(struct inode *dir, struct dentry *entry)
req->in.numargs = 1;
req->in.args[0].size = entry->d_name.len + 1;
req->in.args[0].value = entry->d_name.name;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (!err) {
struct inode *inode = entry->d_inode;
- /* Set nlink to zero so the inode can be cleared, if
- the inode does have more links this will be
- discovered at the next lookup/getattr */
+ /*
+ * Set nlink to zero so the inode can be cleared, if the inode
+ * does have more links this will be discovered at the next
+ * lookup/getattr.
+ */
clear_nlink(inode);
fuse_invalidate_attr(inode);
fuse_invalidate_attr(dir);
@@ -662,7 +664,7 @@ static int fuse_rmdir(struct inode *dir, struct dentry *entry)
req->in.numargs = 1;
req->in.args[0].size = entry->d_name.len + 1;
req->in.args[0].value = entry->d_name.name;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (!err) {
@@ -695,7 +697,7 @@ static int fuse_rename(struct inode *olddir, struct dentry *oldent,
req->in.args[1].value = oldent->d_name.name;
req->in.args[2].size = newent->d_name.len + 1;
req->in.args[2].value = newent->d_name.name;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (!err) {
@@ -811,7 +813,7 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
else
req->out.args[0].size = sizeof(outarg);
req->out.args[0].value = &outarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (!err) {
@@ -911,7 +913,7 @@ static int fuse_access(struct inode *inode, int mask)
req->in.numargs = 1;
req->in.args[0].size = sizeof(inarg);
req->in.args[0].value = &inarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err == -ENOSYS) {
@@ -1033,7 +1035,7 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir)
req->num_pages = 1;
req->pages[0] = page;
fuse_read_fill(req, file, inode, file->f_pos, PAGE_SIZE, FUSE_READDIR);
- request_send(fc, req);
+ fuse_request_send(fc, req);
nbytes = req->out.args[0].size;
err = req->out.h.error;
fuse_put_request(fc, req);
@@ -1067,7 +1069,7 @@ static char *read_link(struct dentry *dentry)
req->out.numargs = 1;
req->out.args[0].size = PAGE_SIZE - 1;
req->out.args[0].value = link;
- request_send(fc, req);
+ fuse_request_send(fc, req);
if (req->out.h.error) {
free_page((unsigned long) link);
link = ERR_PTR(req->out.h.error);
@@ -1273,7 +1275,7 @@ static int fuse_do_setattr(struct dentry *entry, struct iattr *attr,
else
req->out.args[0].size = sizeof(outarg);
req->out.args[0].value = &outarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err) {
@@ -1367,7 +1369,7 @@ static int fuse_setxattr(struct dentry *entry, const char *name,
req->in.args[1].value = name;
req->in.args[2].size = size;
req->in.args[2].value = value;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err == -ENOSYS) {
@@ -1413,7 +1415,7 @@ static ssize_t fuse_getxattr(struct dentry *entry, const char *name,
req->out.args[0].size = sizeof(outarg);
req->out.args[0].value = &outarg;
}
- request_send(fc, req);
+ fuse_request_send(fc, req);
ret = req->out.h.error;
if (!ret)
ret = size ? req->out.args[0].size : outarg.size;
@@ -1463,7 +1465,7 @@ static ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
req->out.args[0].size = sizeof(outarg);
req->out.args[0].value = &outarg;
}
- request_send(fc, req);
+ fuse_request_send(fc, req);
ret = req->out.h.error;
if (!ret)
ret = size ? req->out.args[0].size : outarg.size;
@@ -1496,7 +1498,7 @@ static int fuse_removexattr(struct dentry *entry, const char *name)
req->in.numargs = 1;
req->in.args[0].size = strlen(name) + 1;
req->in.args[0].value = name;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err == -ENOSYS) {
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 4c9ee701126..e8162646a9b 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1,6 +1,6 @@
/*
FUSE: Filesystem in Userspace
- Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+ Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
@@ -39,14 +39,14 @@ static int fuse_send_open(struct inode *inode, struct file *file, int isdir,
req->out.numargs = 1;
req->out.args[0].size = sizeof(*outargp);
req->out.args[0].value = outargp;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
return err;
}
-struct fuse_file *fuse_file_alloc(void)
+struct fuse_file *fuse_file_alloc(struct fuse_conn *fc)
{
struct fuse_file *ff;
ff = kmalloc(sizeof(struct fuse_file), GFP_KERNEL);
@@ -58,7 +58,12 @@ struct fuse_file *fuse_file_alloc(void)
} else {
INIT_LIST_HEAD(&ff->write_entry);
atomic_set(&ff->count, 0);
+ spin_lock(&fc->lock);
+ ff->kh = ++fc->khctr;
+ spin_unlock(&fc->lock);
}
+ RB_CLEAR_NODE(&ff->polled_node);
+ init_waitqueue_head(&ff->poll_wait);
}
return ff;
}
@@ -79,7 +84,6 @@ static void fuse_release_end(struct fuse_conn *fc, struct fuse_req *req)
{
dput(req->misc.release.dentry);
mntput(req->misc.release.vfsmount);
- fuse_put_request(fc, req);
}
static void fuse_file_put(struct fuse_file *ff)
@@ -89,7 +93,7 @@ static void fuse_file_put(struct fuse_file *ff)
struct inode *inode = req->misc.release.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
req->end = fuse_release_end;
- request_send_background(fc, req);
+ fuse_request_send_background(fc, req);
kfree(ff);
}
}
@@ -109,6 +113,7 @@ void fuse_finish_open(struct inode *inode, struct file *file,
int fuse_open_common(struct inode *inode, struct file *file, int isdir)
{
+ struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_open_out outarg;
struct fuse_file *ff;
int err;
@@ -121,7 +126,7 @@ int fuse_open_common(struct inode *inode, struct file *file, int isdir)
if (err)
return err;
- ff = fuse_file_alloc();
+ ff = fuse_file_alloc(fc);
if (!ff)
return -ENOMEM;
@@ -167,7 +172,11 @@ int fuse_release_common(struct inode *inode, struct file *file, int isdir)
spin_lock(&fc->lock);
list_del(&ff->write_entry);
+ if (!RB_EMPTY_NODE(&ff->polled_node))
+ rb_erase(&ff->polled_node, &fc->polled_files);
spin_unlock(&fc->lock);
+
+ wake_up_interruptible_sync(&ff->poll_wait);
/*
* Normally this will send the RELEASE request,
* however if some asynchronous READ or WRITE requests
@@ -280,7 +289,7 @@ static int fuse_flush(struct file *file, fl_owner_t id)
req->in.args[0].size = sizeof(inarg);
req->in.args[0].value = &inarg;
req->force = 1;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err == -ENOSYS) {
@@ -344,7 +353,7 @@ int fuse_fsync_common(struct file *file, struct dentry *de, int datasync,
req->in.numargs = 1;
req->in.args[0].size = sizeof(inarg);
req->in.args[0].value = &inarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err == -ENOSYS) {
@@ -396,7 +405,7 @@ static size_t fuse_send_read(struct fuse_req *req, struct file *file,
inarg->read_flags |= FUSE_READ_LOCKOWNER;
inarg->lock_owner = fuse_lock_owner_id(fc, owner);
}
- request_send(fc, req);
+ fuse_request_send(fc, req);
return req->out.args[0].size;
}
@@ -493,7 +502,6 @@ static void fuse_readpages_end(struct fuse_conn *fc, struct fuse_req *req)
}
if (req->ff)
fuse_file_put(req->ff);
- fuse_put_request(fc, req);
}
static void fuse_send_readpages(struct fuse_req *req, struct file *file,
@@ -509,10 +517,11 @@ static void fuse_send_readpages(struct fuse_req *req, struct file *file,
struct fuse_file *ff = file->private_data;
req->ff = fuse_file_get(ff);
req->end = fuse_readpages_end;
- request_send_background(fc, req);
+ fuse_request_send_background(fc, req);
} else {
- request_send(fc, req);
+ fuse_request_send(fc, req);
fuse_readpages_end(fc, req);
+ fuse_put_request(fc, req);
}
}
@@ -543,7 +552,7 @@ static int fuse_readpages_fill(void *_data, struct page *page)
}
}
req->pages[req->num_pages] = page;
- req->num_pages ++;
+ req->num_pages++;
return 0;
}
@@ -636,7 +645,7 @@ static size_t fuse_send_write(struct fuse_req *req, struct file *file,
inarg->write_flags |= FUSE_WRITE_LOCKOWNER;
inarg->lock_owner = fuse_lock_owner_id(fc, owner);
}
- request_send(fc, req);
+ fuse_request_send(fc, req);
return req->misc.write.out.size;
}
@@ -1042,7 +1051,6 @@ static void fuse_writepage_free(struct fuse_conn *fc, struct fuse_req *req)
{
__free_page(req->pages[0]);
fuse_file_put(req->ff);
- fuse_put_request(fc, req);
}
static void fuse_writepage_finish(struct fuse_conn *fc, struct fuse_req *req)
@@ -1060,6 +1068,8 @@ static void fuse_writepage_finish(struct fuse_conn *fc, struct fuse_req *req)
/* Called under fc->lock, may release and reacquire it */
static void fuse_send_writepage(struct fuse_conn *fc, struct fuse_req *req)
+__releases(&fc->lock)
+__acquires(&fc->lock)
{
struct fuse_inode *fi = get_fuse_inode(req->inode);
loff_t size = i_size_read(req->inode);
@@ -1079,13 +1089,14 @@ static void fuse_send_writepage(struct fuse_conn *fc, struct fuse_req *req)
req->in.args[1].size = inarg->size;
fi->writectr++;
- request_send_background_locked(fc, req);
+ fuse_request_send_background_locked(fc, req);
return;
out_free:
fuse_writepage_finish(fc, req);
spin_unlock(&fc->lock);
fuse_writepage_free(fc, req);
+ fuse_put_request(fc, req);
spin_lock(&fc->lock);
}
@@ -1096,6 +1107,8 @@ static void fuse_send_writepage(struct fuse_conn *fc, struct fuse_req *req)
* Called with fc->lock
*/
void fuse_flush_writepages(struct inode *inode)
+__releases(&fc->lock)
+__acquires(&fc->lock)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_inode *fi = get_fuse_inode(inode);
@@ -1325,7 +1338,7 @@ static int fuse_getlk(struct file *file, struct file_lock *fl)
req->out.numargs = 1;
req->out.args[0].size = sizeof(outarg);
req->out.args[0].value = &outarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (!err)
@@ -1357,7 +1370,7 @@ static int fuse_setlk(struct file *file, struct file_lock *fl, int flock)
return PTR_ERR(req);
fuse_lk_fill(req, file, fl, opcode, pid, flock);
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
/* locking is restartable */
if (err == -EINTR)
@@ -1433,7 +1446,7 @@ static sector_t fuse_bmap(struct address_space *mapping, sector_t block)
req->out.numargs = 1;
req->out.args[0].size = sizeof(outarg);
req->out.args[0].value = &outarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
fuse_put_request(fc, req);
if (err == -ENOSYS)
@@ -1470,6 +1483,406 @@ static loff_t fuse_file_llseek(struct file *file, loff_t offset, int origin)
return retval;
}
+static int fuse_ioctl_copy_user(struct page **pages, struct iovec *iov,
+ unsigned int nr_segs, size_t bytes, bool to_user)
+{
+ struct iov_iter ii;
+ int page_idx = 0;
+
+ if (!bytes)
+ return 0;
+
+ iov_iter_init(&ii, iov, nr_segs, bytes, 0);
+
+ while (iov_iter_count(&ii)) {
+ struct page *page = pages[page_idx++];
+ size_t todo = min_t(size_t, PAGE_SIZE, iov_iter_count(&ii));
+ void *kaddr, *map;
+
+ kaddr = map = kmap(page);
+
+ while (todo) {
+ char __user *uaddr = ii.iov->iov_base + ii.iov_offset;
+ size_t iov_len = ii.iov->iov_len - ii.iov_offset;
+ size_t copy = min(todo, iov_len);
+ size_t left;
+
+ if (!to_user)
+ left = copy_from_user(kaddr, uaddr, copy);
+ else
+ left = copy_to_user(uaddr, kaddr, copy);
+
+ if (unlikely(left))
+ return -EFAULT;
+
+ iov_iter_advance(&ii, copy);
+ todo -= copy;
+ kaddr += copy;
+ }
+
+ kunmap(map);
+ }
+
+ return 0;
+}
+
+/*
+ * For ioctls, there is no generic way to determine how much memory
+ * needs to be read and/or written. Furthermore, ioctls are allowed
+ * to dereference the passed pointer, so the parameter requires deep
+ * copying but FUSE has no idea whatsoever about what to copy in or
+ * out.
+ *
+ * This is solved by allowing FUSE server to retry ioctl with
+ * necessary in/out iovecs. Let's assume the ioctl implementation
+ * needs to read in the following structure.
+ *
+ * struct a {
+ * char *buf;
+ * size_t buflen;
+ * }
+ *
+ * On the first callout to FUSE server, inarg->in_size and
+ * inarg->out_size will be NULL; then, the server completes the ioctl
+ * with FUSE_IOCTL_RETRY set in out->flags, out->in_iovs set to 1 and
+ * the actual iov array to
+ *
+ * { { .iov_base = inarg.arg, .iov_len = sizeof(struct a) } }
+ *
+ * which tells FUSE to copy in the requested area and retry the ioctl.
+ * On the second round, the server has access to the structure and
+ * from that it can tell what to look for next, so on the invocation,
+ * it sets FUSE_IOCTL_RETRY, out->in_iovs to 2 and iov array to
+ *
+ * { { .iov_base = inarg.arg, .iov_len = sizeof(struct a) },
+ * { .iov_base = a.buf, .iov_len = a.buflen } }
+ *
+ * FUSE will copy both struct a and the pointed buffer from the
+ * process doing the ioctl and retry ioctl with both struct a and the
+ * buffer.
+ *
+ * This time, FUSE server has everything it needs and completes ioctl
+ * without FUSE_IOCTL_RETRY which finishes the ioctl call.
+ *
+ * Copying data out works the same way.
+ *
+ * Note that if FUSE_IOCTL_UNRESTRICTED is clear, the kernel
+ * automatically initializes in and out iovs by decoding @cmd with
+ * _IOC_* macros and the server is not allowed to request RETRY. This
+ * limits ioctl data transfers to well-formed ioctls and is the forced
+ * behavior for all FUSE servers.
+ */
+static long fuse_file_do_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg, unsigned int flags)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ struct fuse_file *ff = file->private_data;
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ struct fuse_ioctl_in inarg = {
+ .fh = ff->fh,
+ .cmd = cmd,
+ .arg = arg,
+ .flags = flags
+ };
+ struct fuse_ioctl_out outarg;
+ struct fuse_req *req = NULL;
+ struct page **pages = NULL;
+ struct page *iov_page = NULL;
+ struct iovec *in_iov = NULL, *out_iov = NULL;
+ unsigned int in_iovs = 0, out_iovs = 0, num_pages = 0, max_pages;
+ size_t in_size, out_size, transferred;
+ int err;
+
+ /* assume all the iovs returned by client always fits in a page */
+ BUILD_BUG_ON(sizeof(struct iovec) * FUSE_IOCTL_MAX_IOV > PAGE_SIZE);
+
+ if (!fuse_allow_task(fc, current))
+ return -EACCES;
+
+ err = -EIO;
+ if (is_bad_inode(inode))
+ goto out;
+
+ err = -ENOMEM;
+ pages = kzalloc(sizeof(pages[0]) * FUSE_MAX_PAGES_PER_REQ, GFP_KERNEL);
+ iov_page = alloc_page(GFP_KERNEL);
+ if (!pages || !iov_page)
+ goto out;
+
+ /*
+ * If restricted, initialize IO parameters as encoded in @cmd.
+ * RETRY from server is not allowed.
+ */
+ if (!(flags & FUSE_IOCTL_UNRESTRICTED)) {
+ struct iovec *iov = page_address(iov_page);
+
+ iov->iov_base = (void __user *)arg;
+ iov->iov_len = _IOC_SIZE(cmd);
+
+ if (_IOC_DIR(cmd) & _IOC_WRITE) {
+ in_iov = iov;
+ in_iovs = 1;
+ }
+
+ if (_IOC_DIR(cmd) & _IOC_READ) {
+ out_iov = iov;
+ out_iovs = 1;
+ }
+ }
+
+ retry:
+ inarg.in_size = in_size = iov_length(in_iov, in_iovs);
+ inarg.out_size = out_size = iov_length(out_iov, out_iovs);
+
+ /*
+ * Out data can be used either for actual out data or iovs,
+ * make sure there always is at least one page.
+ */
+ out_size = max_t(size_t, out_size, PAGE_SIZE);
+ max_pages = DIV_ROUND_UP(max(in_size, out_size), PAGE_SIZE);
+
+ /* make sure there are enough buffer pages and init request with them */
+ err = -ENOMEM;
+ if (max_pages > FUSE_MAX_PAGES_PER_REQ)
+ goto out;
+ while (num_pages < max_pages) {
+ pages[num_pages] = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
+ if (!pages[num_pages])
+ goto out;
+ num_pages++;
+ }
+
+ req = fuse_get_req(fc);
+ if (IS_ERR(req)) {
+ err = PTR_ERR(req);
+ req = NULL;
+ goto out;
+ }
+ memcpy(req->pages, pages, sizeof(req->pages[0]) * num_pages);
+ req->num_pages = num_pages;
+
+ /* okay, let's send it to the client */
+ req->in.h.opcode = FUSE_IOCTL;
+ req->in.h.nodeid = get_node_id(inode);
+ req->in.numargs = 1;
+ req->in.args[0].size = sizeof(inarg);
+ req->in.args[0].value = &inarg;
+ if (in_size) {
+ req->in.numargs++;
+ req->in.args[1].size = in_size;
+ req->in.argpages = 1;
+
+ err = fuse_ioctl_copy_user(pages, in_iov, in_iovs, in_size,
+ false);
+ if (err)
+ goto out;
+ }
+
+ req->out.numargs = 2;
+ req->out.args[0].size = sizeof(outarg);
+ req->out.args[0].value = &outarg;
+ req->out.args[1].size = out_size;
+ req->out.argpages = 1;
+ req->out.argvar = 1;
+
+ fuse_request_send(fc, req);
+ err = req->out.h.error;
+ transferred = req->out.args[1].size;
+ fuse_put_request(fc, req);
+ req = NULL;
+ if (err)
+ goto out;
+
+ /* did it ask for retry? */
+ if (outarg.flags & FUSE_IOCTL_RETRY) {
+ char *vaddr;
+
+ /* no retry if in restricted mode */
+ err = -EIO;
+ if (!(flags & FUSE_IOCTL_UNRESTRICTED))
+ goto out;
+
+ in_iovs = outarg.in_iovs;
+ out_iovs = outarg.out_iovs;
+
+ /*
+ * Make sure things are in boundary, separate checks
+ * are to protect against overflow.
+ */
+ err = -ENOMEM;
+ if (in_iovs > FUSE_IOCTL_MAX_IOV ||
+ out_iovs > FUSE_IOCTL_MAX_IOV ||
+ in_iovs + out_iovs > FUSE_IOCTL_MAX_IOV)
+ goto out;
+
+ err = -EIO;
+ if ((in_iovs + out_iovs) * sizeof(struct iovec) != transferred)
+ goto out;
+
+ /* okay, copy in iovs and retry */
+ vaddr = kmap_atomic(pages[0], KM_USER0);
+ memcpy(page_address(iov_page), vaddr, transferred);
+ kunmap_atomic(vaddr, KM_USER0);
+
+ in_iov = page_address(iov_page);
+ out_iov = in_iov + in_iovs;
+
+ goto retry;
+ }
+
+ err = -EIO;
+ if (transferred > inarg.out_size)
+ goto out;
+
+ err = fuse_ioctl_copy_user(pages, out_iov, out_iovs, transferred, true);
+ out:
+ if (req)
+ fuse_put_request(fc, req);
+ if (iov_page)
+ __free_page(iov_page);
+ while (num_pages)
+ __free_page(pages[--num_pages]);
+ kfree(pages);
+
+ return err ? err : outarg.result;
+}
+
+static long fuse_file_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ return fuse_file_do_ioctl(file, cmd, arg, 0);
+}
+
+static long fuse_file_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ return fuse_file_do_ioctl(file, cmd, arg, FUSE_IOCTL_COMPAT);
+}
+
+/*
+ * All files which have been polled are linked to RB tree
+ * fuse_conn->polled_files which is indexed by kh. Walk the tree and
+ * find the matching one.
+ */
+static struct rb_node **fuse_find_polled_node(struct fuse_conn *fc, u64 kh,
+ struct rb_node **parent_out)
+{
+ struct rb_node **link = &fc->polled_files.rb_node;
+ struct rb_node *last = NULL;
+
+ while (*link) {
+ struct fuse_file *ff;
+
+ last = *link;
+ ff = rb_entry(last, struct fuse_file, polled_node);
+
+ if (kh < ff->kh)
+ link = &last->rb_left;
+ else if (kh > ff->kh)
+ link = &last->rb_right;
+ else
+ return link;
+ }
+
+ if (parent_out)
+ *parent_out = last;
+ return link;
+}
+
+/*
+ * The file is about to be polled. Make sure it's on the polled_files
+ * RB tree. Note that files once added to the polled_files tree are
+ * not removed before the file is released. This is because a file
+ * polled once is likely to be polled again.
+ */
+static void fuse_register_polled_file(struct fuse_conn *fc,
+ struct fuse_file *ff)
+{
+ spin_lock(&fc->lock);
+ if (RB_EMPTY_NODE(&ff->polled_node)) {
+ struct rb_node **link, *parent;
+
+ link = fuse_find_polled_node(fc, ff->kh, &parent);
+ BUG_ON(*link);
+ rb_link_node(&ff->polled_node, parent, link);
+ rb_insert_color(&ff->polled_node, &fc->polled_files);
+ }
+ spin_unlock(&fc->lock);
+}
+
+static unsigned fuse_file_poll(struct file *file, poll_table *wait)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ struct fuse_file *ff = file->private_data;
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ struct fuse_poll_in inarg = { .fh = ff->fh, .kh = ff->kh };
+ struct fuse_poll_out outarg;
+ struct fuse_req *req;
+ int err;
+
+ if (fc->no_poll)
+ return DEFAULT_POLLMASK;
+
+ poll_wait(file, &ff->poll_wait, wait);
+
+ /*
+ * Ask for notification iff there's someone waiting for it.
+ * The client may ignore the flag and always notify.
+ */
+ if (waitqueue_active(&ff->poll_wait)) {
+ inarg.flags |= FUSE_POLL_SCHEDULE_NOTIFY;
+ fuse_register_polled_file(fc, ff);
+ }
+
+ req = fuse_get_req(fc);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+
+ req->in.h.opcode = FUSE_POLL;
+ req->in.h.nodeid = get_node_id(inode);
+ req->in.numargs = 1;
+ req->in.args[0].size = sizeof(inarg);
+ req->in.args[0].value = &inarg;
+ req->out.numargs = 1;
+ req->out.args[0].size = sizeof(outarg);
+ req->out.args[0].value = &outarg;
+ fuse_request_send(fc, req);
+ err = req->out.h.error;
+ fuse_put_request(fc, req);
+
+ if (!err)
+ return outarg.revents;
+ if (err == -ENOSYS) {
+ fc->no_poll = 1;
+ return DEFAULT_POLLMASK;
+ }
+ return POLLERR;
+}
+
+/*
+ * This is called from fuse_handle_notify() on FUSE_NOTIFY_POLL and
+ * wakes up the poll waiters.
+ */
+int fuse_notify_poll_wakeup(struct fuse_conn *fc,
+ struct fuse_notify_poll_wakeup_out *outarg)
+{
+ u64 kh = outarg->kh;
+ struct rb_node **link;
+
+ spin_lock(&fc->lock);
+
+ link = fuse_find_polled_node(fc, kh, NULL);
+ if (*link) {
+ struct fuse_file *ff;
+
+ ff = rb_entry(*link, struct fuse_file, polled_node);
+ wake_up_interruptible_sync(&ff->poll_wait);
+ }
+
+ spin_unlock(&fc->lock);
+ return 0;
+}
+
static const struct file_operations fuse_file_operations = {
.llseek = fuse_file_llseek,
.read = do_sync_read,
@@ -1484,6 +1897,9 @@ static const struct file_operations fuse_file_operations = {
.lock = fuse_file_lock,
.flock = fuse_file_flock,
.splice_read = generic_file_splice_read,
+ .unlocked_ioctl = fuse_file_ioctl,
+ .compat_ioctl = fuse_file_compat_ioctl,
+ .poll = fuse_file_poll,
};
static const struct file_operations fuse_direct_io_file_operations = {
@@ -1496,6 +1912,9 @@ static const struct file_operations fuse_direct_io_file_operations = {
.fsync = fuse_fsync,
.lock = fuse_file_lock,
.flock = fuse_file_flock,
+ .unlocked_ioctl = fuse_file_ioctl,
+ .compat_ioctl = fuse_file_compat_ioctl,
+ .poll = fuse_file_poll,
/* no mmap and splice_read */
};
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 35accfdd747..5e64b815a5a 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1,6 +1,6 @@
/*
FUSE: Filesystem in Userspace
- Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+ Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
@@ -19,6 +19,8 @@
#include <linux/backing-dev.h>
#include <linux/mutex.h>
#include <linux/rwsem.h>
+#include <linux/rbtree.h>
+#include <linux/poll.h>
/** Max number of pages that can be used in a single read request */
#define FUSE_MAX_PAGES_PER_REQ 32
@@ -100,6 +102,9 @@ struct fuse_file {
/** Request reserved for flush and release */
struct fuse_req *reserved_req;
+ /** Kernel file handle guaranteed to be unique */
+ u64 kh;
+
/** File handle used by userspace */
u64 fh;
@@ -108,6 +113,12 @@ struct fuse_file {
/** Entry on inode's write_files list */
struct list_head write_entry;
+
+ /** RB node to be linked on fuse_conn->polled_files */
+ struct rb_node polled_node;
+
+ /** Wait queue head for poll */
+ wait_queue_head_t poll_wait;
};
/** One input argument of a request */
@@ -322,6 +333,12 @@ struct fuse_conn {
/** The list of requests under I/O */
struct list_head io;
+ /** The next unique kernel file handle */
+ u64 khctr;
+
+ /** rbtree of fuse_files waiting for poll events indexed by ph */
+ struct rb_root polled_files;
+
/** Number of requests currently in the background */
unsigned num_background;
@@ -355,19 +372,19 @@ struct fuse_conn {
/** Connection failed (version mismatch). Cannot race with
setting other bitfields since it is only set once in INIT
reply, before any other request, and never cleared */
- unsigned conn_error : 1;
+ unsigned conn_error:1;
/** Connection successful. Only set in INIT */
- unsigned conn_init : 1;
+ unsigned conn_init:1;
/** Do readpages asynchronously? Only set in INIT */
- unsigned async_read : 1;
+ unsigned async_read:1;
/** Do not send separate SETATTR request before open(O_TRUNC) */
- unsigned atomic_o_trunc : 1;
+ unsigned atomic_o_trunc:1;
/** Filesystem supports NFS exporting. Only set in INIT */
- unsigned export_support : 1;
+ unsigned export_support:1;
/*
* The following bitfields are only for optimization purposes
@@ -375,43 +392,46 @@ struct fuse_conn {
*/
/** Is fsync not implemented by fs? */
- unsigned no_fsync : 1;
+ unsigned no_fsync:1;
/** Is fsyncdir not implemented by fs? */
- unsigned no_fsyncdir : 1;
+ unsigned no_fsyncdir:1;
/** Is flush not implemented by fs? */
- unsigned no_flush : 1;
+ unsigned no_flush:1;
/** Is setxattr not implemented by fs? */
- unsigned no_setxattr : 1;
+ unsigned no_setxattr:1;
/** Is getxattr not implemented by fs? */
- unsigned no_getxattr : 1;
+ unsigned no_getxattr:1;
/** Is listxattr not implemented by fs? */
- unsigned no_listxattr : 1;
+ unsigned no_listxattr:1;
/** Is removexattr not implemented by fs? */
- unsigned no_removexattr : 1;
+ unsigned no_removexattr:1;
/** Are file locking primitives not implemented by fs? */
- unsigned no_lock : 1;
+ unsigned no_lock:1;
/** Is access not implemented by fs? */
- unsigned no_access : 1;
+ unsigned no_access:1;
/** Is create not implemented by fs? */
- unsigned no_create : 1;
+ unsigned no_create:1;
/** Is interrupt not implemented by fs? */
- unsigned no_interrupt : 1;
+ unsigned no_interrupt:1;
/** Is bmap not implemented by fs? */
- unsigned no_bmap : 1;
+ unsigned no_bmap:1;
+
+ /** Is poll not implemented by fs? */
+ unsigned no_poll:1;
/** Do multi-page cached writes */
- unsigned big_writes : 1;
+ unsigned big_writes:1;
/** The number of requests waiting for completion */
atomic_t num_waiting;
@@ -445,6 +465,9 @@ struct fuse_conn {
/** Version counter for attribute changes */
u64 attr_version;
+
+ /** Called on final put */
+ void (*release)(struct fuse_conn *);
};
static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
@@ -499,7 +522,7 @@ void fuse_read_fill(struct fuse_req *req, struct file *file,
*/
int fuse_open_common(struct inode *inode, struct file *file, int isdir);
-struct fuse_file *fuse_file_alloc(void);
+struct fuse_file *fuse_file_alloc(struct fuse_conn *fc);
void fuse_file_free(struct fuse_file *ff);
void fuse_finish_open(struct inode *inode, struct file *file,
struct fuse_file *ff, struct fuse_open_out *outarg);
@@ -519,6 +542,12 @@ int fuse_fsync_common(struct file *file, struct dentry *de, int datasync,
int isdir);
/**
+ * Notify poll wakeup
+ */
+int fuse_notify_poll_wakeup(struct fuse_conn *fc,
+ struct fuse_notify_poll_wakeup_out *outarg);
+
+/**
* Initialize file operations on a regular file
*/
void fuse_init_file_inode(struct inode *inode);
@@ -593,19 +622,20 @@ void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req);
/**
* Send a request (synchronous)
*/
-void request_send(struct fuse_conn *fc, struct fuse_req *req);
+void fuse_request_send(struct fuse_conn *fc, struct fuse_req *req);
/**
* Send a request with no reply
*/
-void request_send_noreply(struct fuse_conn *fc, struct fuse_req *req);
+void fuse_request_send_noreply(struct fuse_conn *fc, struct fuse_req *req);
/**
* Send a request in the background
*/
-void request_send_background(struct fuse_conn *fc, struct fuse_req *req);
+void fuse_request_send_background(struct fuse_conn *fc, struct fuse_req *req);
-void request_send_background_locked(struct fuse_conn *fc, struct fuse_req *req);
+void fuse_request_send_background_locked(struct fuse_conn *fc,
+ struct fuse_req *req);
/* Abort all requests */
void fuse_abort_conn(struct fuse_conn *fc);
@@ -623,6 +653,11 @@ void fuse_invalidate_entry_cache(struct dentry *entry);
struct fuse_conn *fuse_conn_get(struct fuse_conn *fc);
/**
+ * Initialize fuse_conn
+ */
+int fuse_conn_init(struct fuse_conn *fc, struct super_block *sb);
+
+/**
* Release reference to fuse_conn
*/
void fuse_conn_put(struct fuse_conn *fc);
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 2e99f34b443..47c96fdca1a 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1,6 +1,6 @@
/*
FUSE: Filesystem in Userspace
- Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+ Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
@@ -37,10 +37,10 @@ struct fuse_mount_data {
unsigned rootmode;
unsigned user_id;
unsigned group_id;
- unsigned fd_present : 1;
- unsigned rootmode_present : 1;
- unsigned user_id_present : 1;
- unsigned group_id_present : 1;
+ unsigned fd_present:1;
+ unsigned rootmode_present:1;
+ unsigned user_id_present:1;
+ unsigned group_id_present:1;
unsigned flags;
unsigned max_read;
unsigned blksize;
@@ -94,7 +94,7 @@ void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
req->in.numargs = 1;
req->in.args[0].size = sizeof(struct fuse_forget_in);
req->in.args[0].value = inarg;
- request_send_noreply(fc, req);
+ fuse_request_send_noreply(fc, req);
}
static void fuse_clear_inode(struct inode *inode)
@@ -250,7 +250,7 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid,
fi = get_fuse_inode(inode);
spin_lock(&fc->lock);
- fi->nlookup ++;
+ fi->nlookup++;
spin_unlock(&fc->lock);
fuse_change_attributes(inode, attr, attr_valid, attr_version);
@@ -269,7 +269,7 @@ static void fuse_send_destroy(struct fuse_conn *fc)
fc->destroy_req = NULL;
req->in.h.opcode = FUSE_DESTROY;
req->force = 1;
- request_send(fc, req);
+ fuse_request_send(fc, req);
fuse_put_request(fc, req);
}
}
@@ -334,7 +334,7 @@ static int fuse_statfs(struct dentry *dentry, struct kstatfs *buf)
req->out.args[0].size =
fc->minor < 4 ? FUSE_COMPAT_STATFS_SIZE : sizeof(outarg);
req->out.args[0].value = &outarg;
- request_send(fc, req);
+ fuse_request_send(fc, req);
err = req->out.h.error;
if (!err)
convert_fuse_statfs(buf, &outarg.st);
@@ -462,68 +462,69 @@ static int fuse_show_options(struct seq_file *m, struct vfsmount *mnt)
return 0;
}
-static struct fuse_conn *new_conn(struct super_block *sb)
+int fuse_conn_init(struct fuse_conn *fc, struct super_block *sb)
{
- struct fuse_conn *fc;
int err;
- fc = kzalloc(sizeof(*fc), GFP_KERNEL);
- if (fc) {
- spin_lock_init(&fc->lock);
- mutex_init(&fc->inst_mutex);
- atomic_set(&fc->count, 1);
- init_waitqueue_head(&fc->waitq);
- init_waitqueue_head(&fc->blocked_waitq);
- init_waitqueue_head(&fc->reserved_req_waitq);
- INIT_LIST_HEAD(&fc->pending);
- INIT_LIST_HEAD(&fc->processing);
- INIT_LIST_HEAD(&fc->io);
- INIT_LIST_HEAD(&fc->interrupts);
- INIT_LIST_HEAD(&fc->bg_queue);
- atomic_set(&fc->num_waiting, 0);
- fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
- fc->bdi.unplug_io_fn = default_unplug_io_fn;
- /* fuse does it's own writeback accounting */
- fc->bdi.capabilities = BDI_CAP_NO_ACCT_WB;
- fc->dev = sb->s_dev;
- err = bdi_init(&fc->bdi);
- if (err)
- goto error_kfree;
- if (sb->s_bdev) {
- err = bdi_register(&fc->bdi, NULL, "%u:%u-fuseblk",
- MAJOR(fc->dev), MINOR(fc->dev));
- } else {
- err = bdi_register_dev(&fc->bdi, fc->dev);
- }
- if (err)
- goto error_bdi_destroy;
- /*
- * For a single fuse filesystem use max 1% of dirty +
- * writeback threshold.
- *
- * This gives about 1M of write buffer for memory maps on a
- * machine with 1G and 10% dirty_ratio, which should be more
- * than enough.
- *
- * Privileged users can raise it by writing to
- *
- * /sys/class/bdi/<bdi>/max_ratio
- */
- bdi_set_max_ratio(&fc->bdi, 1);
- fc->reqctr = 0;
- fc->blocked = 1;
- fc->attr_version = 1;
- get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key));
+ memset(fc, 0, sizeof(*fc));
+ spin_lock_init(&fc->lock);
+ mutex_init(&fc->inst_mutex);
+ atomic_set(&fc->count, 1);
+ init_waitqueue_head(&fc->waitq);
+ init_waitqueue_head(&fc->blocked_waitq);
+ init_waitqueue_head(&fc->reserved_req_waitq);
+ INIT_LIST_HEAD(&fc->pending);
+ INIT_LIST_HEAD(&fc->processing);
+ INIT_LIST_HEAD(&fc->io);
+ INIT_LIST_HEAD(&fc->interrupts);
+ INIT_LIST_HEAD(&fc->bg_queue);
+ INIT_LIST_HEAD(&fc->entry);
+ atomic_set(&fc->num_waiting, 0);
+ fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ fc->bdi.unplug_io_fn = default_unplug_io_fn;
+ /* fuse does it's own writeback accounting */
+ fc->bdi.capabilities = BDI_CAP_NO_ACCT_WB;
+ fc->khctr = 0;
+ fc->polled_files = RB_ROOT;
+ fc->dev = sb->s_dev;
+ err = bdi_init(&fc->bdi);
+ if (err)
+ goto error_mutex_destroy;
+ if (sb->s_bdev) {
+ err = bdi_register(&fc->bdi, NULL, "%u:%u-fuseblk",
+ MAJOR(fc->dev), MINOR(fc->dev));
+ } else {
+ err = bdi_register_dev(&fc->bdi, fc->dev);
}
- return fc;
+ if (err)
+ goto error_bdi_destroy;
+ /*
+ * For a single fuse filesystem use max 1% of dirty +
+ * writeback threshold.
+ *
+ * This gives about 1M of write buffer for memory maps on a
+ * machine with 1G and 10% dirty_ratio, which should be more
+ * than enough.
+ *
+ * Privileged users can raise it by writing to
+ *
+ * /sys/class/bdi/<bdi>/max_ratio
+ */
+ bdi_set_max_ratio(&fc->bdi, 1);
+ fc->reqctr = 0;
+ fc->blocked = 1;
+ fc->attr_version = 1;
+ get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key));
-error_bdi_destroy:
+ return 0;
+
+ error_bdi_destroy:
bdi_destroy(&fc->bdi);
-error_kfree:
+ error_mutex_destroy:
mutex_destroy(&fc->inst_mutex);
- kfree(fc);
- return NULL;
+ return err;
}
+EXPORT_SYMBOL_GPL(fuse_conn_init);
void fuse_conn_put(struct fuse_conn *fc)
{
@@ -532,7 +533,7 @@ void fuse_conn_put(struct fuse_conn *fc)
fuse_request_free(fc->destroy_req);
mutex_destroy(&fc->inst_mutex);
bdi_destroy(&fc->bdi);
- kfree(fc);
+ fc->release(fc);
}
}
@@ -542,7 +543,7 @@ struct fuse_conn *fuse_conn_get(struct fuse_conn *fc)
return fc;
}
-static struct inode *get_root_inode(struct super_block *sb, unsigned mode)
+static struct inode *fuse_get_root_inode(struct super_block *sb, unsigned mode)
{
struct fuse_attr attr;
memset(&attr, 0, sizeof(attr));
@@ -553,8 +554,7 @@ static struct inode *get_root_inode(struct super_block *sb, unsigned mode)
return fuse_iget(sb, 1, 0, &attr, 0, 0);
}
-struct fuse_inode_handle
-{
+struct fuse_inode_handle {
u64 nodeid;
u32 generation;
};
@@ -761,7 +761,6 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
fc->max_write = max_t(unsigned, 4096, fc->max_write);
fc->conn_init = 1;
}
- fuse_put_request(fc, req);
fc->blocked = 0;
wake_up_all(&fc->blocked_waitq);
}
@@ -787,7 +786,12 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req)
req->out.args[0].size = sizeof(struct fuse_init_out);
req->out.args[0].value = &req->misc.init_out;
req->end = process_init_reply;
- request_send_background(fc, req);
+ fuse_request_send_background(fc, req);
+}
+
+static void fuse_free_conn(struct fuse_conn *fc)
+{
+ kfree(fc);
}
static int fuse_fill_super(struct super_block *sb, void *data, int silent)
@@ -828,10 +832,17 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
if (file->f_op != &fuse_dev_operations)
return -EINVAL;
- fc = new_conn(sb);
+ fc = kmalloc(sizeof(*fc), GFP_KERNEL);
if (!fc)
return -ENOMEM;
+ err = fuse_conn_init(fc, sb);
+ if (err) {
+ kfree(fc);
+ return err;
+ }
+
+ fc->release = fuse_free_conn;
fc->flags = d.flags;
fc->user_id = d.user_id;
fc->group_id = d.group_id;
@@ -841,7 +852,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
sb->s_fs_info = fc;
err = -ENOMEM;
- root = get_root_inode(sb, d.rootmode);
+ root = fuse_get_root_inode(sb, d.rootmode);
if (!root)
goto err;
@@ -952,7 +963,7 @@ static inline void unregister_fuseblk(void)
static void fuse_inode_init_once(void *foo)
{
- struct inode * inode = foo;
+ struct inode *inode = foo;
inode_init_once(inode);
}
@@ -1031,7 +1042,7 @@ static int __init fuse_init(void)
{
int res;
- printk("fuse init (API version %i.%i)\n",
+ printk(KERN_INFO "fuse init (API version %i.%i)\n",
FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
INIT_LIST_HEAD(&fuse_conn_list);
diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
index ab2f57e3fb8..e563a644981 100644
--- a/fs/gfs2/Kconfig
+++ b/fs/gfs2/Kconfig
@@ -1,6 +1,6 @@
config GFS2_FS
tristate "GFS2 file system support"
- depends on EXPERIMENTAL && (64BIT || (LSF && LBD))
+ depends on EXPERIMENTAL && (64BIT || LBD)
select FS_POSIX_ACL
select CRC32
help
diff --git a/fs/gfs2/Makefile b/fs/gfs2/Makefile
index ec65851ec80..c1b4ec6a965 100644
--- a/fs/gfs2/Makefile
+++ b/fs/gfs2/Makefile
@@ -1,5 +1,5 @@
obj-$(CONFIG_GFS2_FS) += gfs2.o
-gfs2-y := acl.o bmap.o daemon.o dir.o eaops.o eattr.o glock.o \
+gfs2-y := acl.o bmap.o dir.o eaops.o eattr.o glock.o \
glops.o inode.o log.o lops.o locking.o main.o meta_io.o \
mount.o ops_address.o ops_dentry.o ops_export.o ops_file.o \
ops_fstype.o ops_inode.o ops_super.o quota.o \
diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
index 3e9bd46f27e..e335dceb6a4 100644
--- a/fs/gfs2/acl.c
+++ b/fs/gfs2/acl.c
@@ -91,7 +91,7 @@ static int acl_get(struct gfs2_inode *ip, int access, struct posix_acl **acl,
struct gfs2_ea_location el_this;
int error;
- if (!ip->i_di.di_eattr)
+ if (!ip->i_eattr)
return 0;
memset(&er, 0, sizeof(struct gfs2_ea_request));
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index bec76b1c2bb..11ffc56f1f8 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -75,9 +75,9 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
void *kaddr = kmap(page);
memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode),
- ip->i_di.di_size);
- memset(kaddr + ip->i_di.di_size, 0,
- PAGE_CACHE_SIZE - ip->i_di.di_size);
+ ip->i_disksize);
+ memset(kaddr + ip->i_disksize, 0,
+ PAGE_CACHE_SIZE - ip->i_disksize);
kunmap(page);
SetPageUptodate(page);
@@ -132,7 +132,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page)
if (error)
goto out;
- if (ip->i_di.di_size) {
+ if (ip->i_disksize) {
/* Get a free block, fill it with the stuffed data,
and write it out to disk */
@@ -159,7 +159,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page)
di = (struct gfs2_dinode *)dibh->b_data;
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
- if (ip->i_di.di_size) {
+ if (ip->i_disksize) {
*(__be64 *)(di + 1) = cpu_to_be64(block);
gfs2_add_inode_blocks(&ip->i_inode, 1);
di->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
@@ -926,7 +926,7 @@ static int do_grow(struct gfs2_inode *ip, u64 size)
}
}
- ip->i_di.di_size = size;
+ ip->i_disksize = size;
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(ip, dibh->b_data);
@@ -1033,7 +1033,7 @@ static int trunc_start(struct gfs2_inode *ip, u64 size)
goto out;
if (gfs2_is_stuffed(ip)) {
- ip->i_di.di_size = size;
+ ip->i_disksize = size;
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(ip, dibh->b_data);
@@ -1045,9 +1045,9 @@ static int trunc_start(struct gfs2_inode *ip, u64 size)
error = gfs2_block_truncate_page(ip->i_inode.i_mapping);
if (!error) {
- ip->i_di.di_size = size;
+ ip->i_disksize = size;
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
- ip->i_di.di_flags |= GFS2_DIF_TRUNC_IN_PROG;
+ ip->i_diskflags |= GFS2_DIF_TRUNC_IN_PROG;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(ip, dibh->b_data);
}
@@ -1114,13 +1114,13 @@ static int trunc_end(struct gfs2_inode *ip)
if (error)
goto out;
- if (!ip->i_di.di_size) {
+ if (!ip->i_disksize) {
ip->i_height = 0;
ip->i_goal = ip->i_no_addr;
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
}
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
- ip->i_di.di_flags &= ~GFS2_DIF_TRUNC_IN_PROG;
+ ip->i_diskflags &= ~GFS2_DIF_TRUNC_IN_PROG;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(ip, dibh->b_data);
@@ -1205,9 +1205,9 @@ int gfs2_truncatei(struct gfs2_inode *ip, u64 size)
if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), S_ISREG(ip->i_inode.i_mode)))
return -EINVAL;
- if (size > ip->i_di.di_size)
+ if (size > ip->i_disksize)
error = do_grow(ip, size);
- else if (size < ip->i_di.di_size)
+ else if (size < ip->i_disksize)
error = do_shrink(ip, size);
else
/* update time stamps */
@@ -1219,7 +1219,7 @@ int gfs2_truncatei(struct gfs2_inode *ip, u64 size)
int gfs2_truncatei_resume(struct gfs2_inode *ip)
{
int error;
- error = trunc_dealloc(ip, ip->i_di.di_size);
+ error = trunc_dealloc(ip, ip->i_disksize);
if (!error)
error = trunc_end(ip);
return error;
@@ -1231,35 +1231,6 @@ int gfs2_file_dealloc(struct gfs2_inode *ip)
}
/**
- * gfs2_write_calc_reserv - calculate number of blocks needed to write to a file
- * @ip: the file
- * @len: the number of bytes to be written to the file
- * @data_blocks: returns the number of data blocks required
- * @ind_blocks: returns the number of indirect blocks required
- *
- */
-
-void gfs2_write_calc_reserv(struct gfs2_inode *ip, unsigned int len,
- unsigned int *data_blocks, unsigned int *ind_blocks)
-{
- struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- unsigned int tmp;
-
- if (gfs2_is_dir(ip)) {
- *data_blocks = DIV_ROUND_UP(len, sdp->sd_jbsize) + 2;
- *ind_blocks = 3 * (sdp->sd_max_jheight - 1);
- } else {
- *data_blocks = (len >> sdp->sd_sb.sb_bsize_shift) + 3;
- *ind_blocks = 3 * (sdp->sd_max_height - 1);
- }
-
- for (tmp = *data_blocks; tmp > sdp->sd_diptrs;) {
- tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
- *ind_blocks += tmp;
- }
-}
-
-/**
* gfs2_write_alloc_required - figure out if a write will require an allocation
* @ip: the file being written to
* @offset: the offset to write to
@@ -1276,6 +1247,7 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
struct buffer_head bh;
unsigned int shift;
u64 lblock, lblock_stop, size;
+ u64 end_of_file;
*alloc_required = 0;
@@ -1291,19 +1263,12 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
*alloc_required = 1;
shift = sdp->sd_sb.sb_bsize_shift;
- if (gfs2_is_dir(ip)) {
- unsigned int bsize = sdp->sd_jbsize;
- lblock = offset;
- do_div(lblock, bsize);
- lblock_stop = offset + len + bsize - 1;
- do_div(lblock_stop, bsize);
- } else {
- u64 end_of_file = (ip->i_di.di_size + sdp->sd_sb.sb_bsize - 1) >> shift;
- lblock = offset >> shift;
- lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift;
- if (lblock_stop > end_of_file)
- return 0;
- }
+ BUG_ON(gfs2_is_dir(ip));
+ end_of_file = (ip->i_disksize + sdp->sd_sb.sb_bsize - 1) >> shift;
+ lblock = offset >> shift;
+ lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift;
+ if (lblock_stop > end_of_file)
+ return 0;
size = (lblock_stop - lblock) << shift;
do {
diff --git a/fs/gfs2/bmap.h b/fs/gfs2/bmap.h
index 4e6cde2943b..c983177e05a 100644
--- a/fs/gfs2/bmap.h
+++ b/fs/gfs2/bmap.h
@@ -10,10 +10,40 @@
#ifndef __BMAP_DOT_H__
#define __BMAP_DOT_H__
+#include "inode.h"
+
struct inode;
struct gfs2_inode;
struct page;
+
+/**
+ * gfs2_write_calc_reserv - calculate number of blocks needed to write to a file
+ * @ip: the file
+ * @len: the number of bytes to be written to the file
+ * @data_blocks: returns the number of data blocks required
+ * @ind_blocks: returns the number of indirect blocks required
+ *
+ */
+
+static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip,
+ unsigned int len,
+ unsigned int *data_blocks,
+ unsigned int *ind_blocks)
+{
+ const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ unsigned int tmp;
+
+ BUG_ON(gfs2_is_dir(ip));
+ *data_blocks = (len >> sdp->sd_sb.sb_bsize_shift) + 3;
+ *ind_blocks = 3 * (sdp->sd_max_height - 1);
+
+ for (tmp = *data_blocks; tmp > sdp->sd_diptrs;) {
+ tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs);
+ *ind_blocks += tmp;
+ }
+}
+
int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);
int gfs2_block_map(struct inode *inode, sector_t lblock, struct buffer_head *bh, int create);
int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen);
@@ -21,10 +51,6 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
int gfs2_truncatei(struct gfs2_inode *ip, u64 size);
int gfs2_truncatei_resume(struct gfs2_inode *ip);
int gfs2_file_dealloc(struct gfs2_inode *ip);
-
-void gfs2_write_calc_reserv(struct gfs2_inode *ip, unsigned int len,
- unsigned int *data_blocks,
- unsigned int *ind_blocks);
int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
unsigned int len, int *alloc_required);
diff --git a/fs/gfs2/daemon.c b/fs/gfs2/daemon.c
deleted file mode 100644
index e51991947d2..00000000000
--- a/fs/gfs2/daemon.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/kthread.h>
-#include <linux/delay.h>
-#include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
-#include <linux/freezer.h>
-
-#include "gfs2.h"
-#include "incore.h"
-#include "daemon.h"
-#include "glock.h"
-#include "log.h"
-#include "quota.h"
-#include "recovery.h"
-#include "super.h"
-#include "util.h"
-
-/* This uses schedule_timeout() instead of msleep() because it's good for
- the daemons to wake up more often than the timeout when unmounting so
- the user's unmount doesn't sit there forever.
-
- The kthread functions used to start these daemons block and flush signals. */
-
-/**
- * gfs2_glockd - Reclaim unused glock structures
- * @sdp: Pointer to GFS2 superblock
- *
- * One or more of these daemons run, reclaiming glocks on sd_reclaim_list.
- * Number of daemons can be set by user, with num_glockd mount option.
- */
-
-int gfs2_glockd(void *data)
-{
- struct gfs2_sbd *sdp = data;
-
- while (!kthread_should_stop()) {
- while (atomic_read(&sdp->sd_reclaim_count))
- gfs2_reclaim_glock(sdp);
-
- wait_event_interruptible(sdp->sd_reclaim_wq,
- (atomic_read(&sdp->sd_reclaim_count) ||
- kthread_should_stop()));
- if (freezing(current))
- refrigerator();
- }
-
- return 0;
-}
-
-/**
- * gfs2_recoverd - Recover dead machine's journals
- * @sdp: Pointer to GFS2 superblock
- *
- */
-
-int gfs2_recoverd(void *data)
-{
- struct gfs2_sbd *sdp = data;
- unsigned long t;
-
- while (!kthread_should_stop()) {
- gfs2_check_journals(sdp);
- t = gfs2_tune_get(sdp, gt_recoverd_secs) * HZ;
- if (freezing(current))
- refrigerator();
- schedule_timeout_interruptible(t);
- }
-
- return 0;
-}
-
-/**
- * gfs2_quotad - Write cached quota changes into the quota file
- * @sdp: Pointer to GFS2 superblock
- *
- */
-
-int gfs2_quotad(void *data)
-{
- struct gfs2_sbd *sdp = data;
- unsigned long t;
- int error;
-
- while (!kthread_should_stop()) {
- /* Update the master statfs file */
-
- t = sdp->sd_statfs_sync_time +
- gfs2_tune_get(sdp, gt_statfs_quantum) * HZ;
-
- if (time_after_eq(jiffies, t)) {
- error = gfs2_statfs_sync(sdp);
- if (error &&
- error != -EROFS &&
- !test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
- fs_err(sdp, "quotad: (1) error=%d\n", error);
- sdp->sd_statfs_sync_time = jiffies;
- }
-
- /* Update quota file */
-
- t = sdp->sd_quota_sync_time +
- gfs2_tune_get(sdp, gt_quota_quantum) * HZ;
-
- if (time_after_eq(jiffies, t)) {
- error = gfs2_quota_sync(sdp);
- if (error &&
- error != -EROFS &&
- !test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
- fs_err(sdp, "quotad: (2) error=%d\n", error);
- sdp->sd_quota_sync_time = jiffies;
- }
-
- gfs2_quota_scan(sdp);
-
- t = gfs2_tune_get(sdp, gt_quotad_secs) * HZ;
- if (freezing(current))
- refrigerator();
- schedule_timeout_interruptible(t);
- }
-
- return 0;
-}
-
diff --git a/fs/gfs2/daemon.h b/fs/gfs2/daemon.h
deleted file mode 100644
index 4be084fb6a6..00000000000
--- a/fs/gfs2/daemon.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __DAEMON_DOT_H__
-#define __DAEMON_DOT_H__
-
-int gfs2_glockd(void *data);
-int gfs2_recoverd(void *data);
-int gfs2_quotad(void *data);
-
-#endif /* __DAEMON_DOT_H__ */
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index eed040d8ba3..b7c8e5c7079 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -36,7 +36,7 @@
* the block. In leaves, they begin at offset sizeof(struct gfs2_leaf) from the
* beginning of the leaf block. The dirents reside in leaves when
*
- * dip->i_di.di_flags & GFS2_DIF_EXHASH is true
+ * dip->i_diskflags & GFS2_DIF_EXHASH is true
*
* Otherwise, the dirents are "linear", within a single stuffed dinode block.
*
@@ -128,8 +128,8 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf,
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
memcpy(dibh->b_data + offset + sizeof(struct gfs2_dinode), buf, size);
- if (ip->i_di.di_size < offset + size)
- ip->i_di.di_size = offset + size;
+ if (ip->i_disksize < offset + size)
+ ip->i_disksize = offset + size;
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_dinode_out(ip, dibh->b_data);
@@ -226,8 +226,8 @@ out:
if (error)
return error;
- if (ip->i_di.di_size < offset + copied)
- ip->i_di.di_size = offset + copied;
+ if (ip->i_disksize < offset + copied)
+ ip->i_disksize = offset + copied;
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
@@ -277,11 +277,11 @@ static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf, u64 offset,
int copied = 0;
int error = 0;
- if (offset >= ip->i_di.di_size)
+ if (offset >= ip->i_disksize)
return 0;
- if (offset + size > ip->i_di.di_size)
- size = ip->i_di.di_size - offset;
+ if (offset + size > ip->i_disksize)
+ size = ip->i_disksize - offset;
if (!size)
return 0;
@@ -755,12 +755,12 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode,
struct gfs2_inode *ip = GFS2_I(inode);
int error;
- if (ip->i_di.di_flags & GFS2_DIF_EXHASH) {
+ if (ip->i_diskflags & GFS2_DIF_EXHASH) {
struct gfs2_leaf *leaf;
unsigned hsize = 1 << ip->i_depth;
unsigned index;
u64 ln;
- if (hsize * sizeof(u64) != ip->i_di.di_size) {
+ if (hsize * sizeof(u64) != ip->i_disksize) {
gfs2_consist_inode(ip);
return ERR_PTR(-EIO);
}
@@ -858,8 +858,8 @@ static int dir_make_exhash(struct inode *inode)
return -ENOSPC;
bn = bh->b_blocknr;
- gfs2_assert(sdp, dip->i_di.di_entries < (1 << 16));
- leaf->lf_entries = cpu_to_be16(dip->i_di.di_entries);
+ gfs2_assert(sdp, dip->i_entries < (1 << 16));
+ leaf->lf_entries = cpu_to_be16(dip->i_entries);
/* Copy dirents */
@@ -905,9 +905,9 @@ static int dir_make_exhash(struct inode *inode)
for (x = sdp->sd_hash_ptrs; x--; lp++)
*lp = cpu_to_be64(bn);
- dip->i_di.di_size = sdp->sd_sb.sb_bsize / 2;
+ dip->i_disksize = sdp->sd_sb.sb_bsize / 2;
gfs2_add_inode_blocks(&dip->i_inode, 1);
- dip->i_di.di_flags |= GFS2_DIF_EXHASH;
+ dip->i_diskflags |= GFS2_DIF_EXHASH;
for (x = sdp->sd_hash_ptrs, y = -1; x; x >>= 1, y++) ;
dip->i_depth = y;
@@ -1082,7 +1082,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
int error = 0;
hsize = 1 << dip->i_depth;
- if (hsize * sizeof(u64) != dip->i_di.di_size) {
+ if (hsize * sizeof(u64) != dip->i_disksize) {
gfs2_consist_inode(dip);
return -EIO;
}
@@ -1091,7 +1091,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
buf = kcalloc(3, sdp->sd_hash_bsize, GFP_NOFS | __GFP_NOFAIL);
- for (block = dip->i_di.di_size >> sdp->sd_hash_bsize_shift; block--;) {
+ for (block = dip->i_disksize >> sdp->sd_hash_bsize_shift; block--;) {
error = gfs2_dir_read_data(dip, (char *)buf,
block * sdp->sd_hash_bsize,
sdp->sd_hash_bsize, 1);
@@ -1370,7 +1370,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
unsigned depth = 0;
hsize = 1 << dip->i_depth;
- if (hsize * sizeof(u64) != dip->i_di.di_size) {
+ if (hsize * sizeof(u64) != dip->i_disksize) {
gfs2_consist_inode(dip);
return -EIO;
}
@@ -1426,10 +1426,10 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
int copied = 0;
int error;
- if (!dip->i_di.di_entries)
+ if (!dip->i_entries)
return 0;
- if (dip->i_di.di_flags & GFS2_DIF_EXHASH)
+ if (dip->i_diskflags & GFS2_DIF_EXHASH)
return dir_e_read(inode, offset, opaque, filldir);
if (!gfs2_is_stuffed(dip)) {
@@ -1453,17 +1453,17 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
error = PTR_ERR(dent);
goto out;
}
- if (dip->i_di.di_entries != g.offset) {
+ if (dip->i_entries != g.offset) {
fs_warn(sdp, "Number of entries corrupt in dir %llu, "
- "ip->i_di.di_entries (%u) != g.offset (%u)\n",
+ "ip->i_entries (%u) != g.offset (%u)\n",
(unsigned long long)dip->i_no_addr,
- dip->i_di.di_entries,
+ dip->i_entries,
g.offset);
error = -EIO;
goto out;
}
error = do_filldir_main(dip, offset, opaque, filldir, darr,
- dip->i_di.di_entries, &copied);
+ dip->i_entries, &copied);
out:
kfree(darr);
}
@@ -1612,7 +1612,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
dent = gfs2_init_dirent(inode, dent, name, bh);
gfs2_inum_out(nip, dent);
dent->de_type = cpu_to_be16(type);
- if (ip->i_di.di_flags & GFS2_DIF_EXHASH) {
+ if (ip->i_diskflags & GFS2_DIF_EXHASH) {
leaf = (struct gfs2_leaf *)bh->b_data;
be16_add_cpu(&leaf->lf_entries, 1);
}
@@ -1621,14 +1621,14 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
if (error)
break;
gfs2_trans_add_bh(ip->i_gl, bh, 1);
- ip->i_di.di_entries++;
+ ip->i_entries++;
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_dinode_out(ip, bh->b_data);
brelse(bh);
error = 0;
break;
}
- if (!(ip->i_di.di_flags & GFS2_DIF_EXHASH)) {
+ if (!(ip->i_diskflags & GFS2_DIF_EXHASH)) {
error = dir_make_exhash(inode);
if (error)
break;
@@ -1691,7 +1691,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name)
}
dirent_del(dip, bh, prev, dent);
- if (dip->i_di.di_flags & GFS2_DIF_EXHASH) {
+ if (dip->i_diskflags & GFS2_DIF_EXHASH) {
struct gfs2_leaf *leaf = (struct gfs2_leaf *)bh->b_data;
u16 entries = be16_to_cpu(leaf->lf_entries);
if (!entries)
@@ -1704,10 +1704,10 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name)
if (error)
return error;
- if (!dip->i_di.di_entries)
+ if (!dip->i_entries)
gfs2_consist_inode(dip);
gfs2_trans_add_bh(dip->i_gl, bh, 1);
- dip->i_di.di_entries--;
+ dip->i_entries--;
dip->i_inode.i_mtime = dip->i_inode.i_ctime = CURRENT_TIME;
gfs2_dinode_out(dip, bh->b_data);
brelse(bh);
@@ -1748,7 +1748,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
gfs2_inum_out(nip, dent);
dent->de_type = cpu_to_be16(new_type);
- if (dip->i_di.di_flags & GFS2_DIF_EXHASH) {
+ if (dip->i_diskflags & GFS2_DIF_EXHASH) {
brelse(bh);
error = gfs2_meta_inode_buffer(dip, &bh);
if (error)
@@ -1784,7 +1784,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data)
int error = 0;
hsize = 1 << dip->i_depth;
- if (hsize * sizeof(u64) != dip->i_di.di_size) {
+ if (hsize * sizeof(u64) != dip->i_disksize) {
gfs2_consist_inode(dip);
return -EIO;
}
diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
index 8a468cac932..4f919440c3b 100644
--- a/fs/gfs2/dir.h
+++ b/fs/gfs2/dir.h
@@ -11,6 +11,7 @@
#define __DIR_DOT_H__
#include <linux/dcache.h>
+#include <linux/crc32.h>
struct inode;
struct gfs2_inode;
diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c
index e3f76f451b0..0d1c76d906a 100644
--- a/fs/gfs2/eattr.c
+++ b/fs/gfs2/eattr.c
@@ -114,11 +114,11 @@ static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data)
__be64 *eablk, *end;
int error;
- error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr, DIO_WAIT, &bh);
+ error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &bh);
if (error)
return error;
- if (!(ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT)) {
+ if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) {
error = ea_foreach_i(ip, bh, ea_call, data);
goto out;
}
@@ -414,7 +414,7 @@ int gfs2_ea_list(struct gfs2_inode *ip, struct gfs2_ea_request *er)
if (error)
return error;
- if (ip->i_di.di_eattr) {
+ if (ip->i_eattr) {
struct ea_list ei = { .ei_er = er, .ei_size = 0 };
error = ea_foreach(ip, ea_list_i, &ei);
@@ -514,7 +514,7 @@ int gfs2_ea_get_i(struct gfs2_inode *ip, struct gfs2_ea_request *er)
struct gfs2_ea_location el;
int error;
- if (!ip->i_di.di_eattr)
+ if (!ip->i_eattr)
return -ENODATA;
error = gfs2_ea_find(ip, er, &el);
@@ -741,7 +741,7 @@ static int ea_init_i(struct gfs2_inode *ip, struct gfs2_ea_request *er,
if (error)
return error;
- ip->i_di.di_eattr = bh->b_blocknr;
+ ip->i_eattr = bh->b_blocknr;
error = ea_write(ip, GFS2_EA_BH2FIRST(bh), er);
brelse(bh);
@@ -935,10 +935,10 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er,
int error;
int mh_size = sizeof(struct gfs2_meta_header);
- if (ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT) {
+ if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) {
__be64 *end;
- error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr, DIO_WAIT,
+ error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT,
&indbh);
if (error)
return error;
@@ -972,9 +972,9 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er,
gfs2_buffer_clear_tail(indbh, mh_size);
eablk = (__be64 *)(indbh->b_data + mh_size);
- *eablk = cpu_to_be64(ip->i_di.di_eattr);
- ip->i_di.di_eattr = blk;
- ip->i_di.di_flags |= GFS2_DIF_EA_INDIRECT;
+ *eablk = cpu_to_be64(ip->i_eattr);
+ ip->i_eattr = blk;
+ ip->i_diskflags |= GFS2_DIF_EA_INDIRECT;
gfs2_add_inode_blocks(&ip->i_inode, 1);
eablk++;
@@ -1015,7 +1015,7 @@ static int ea_set_i(struct gfs2_inode *ip, struct gfs2_ea_request *er,
if (error)
return error;
- if (!(ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT))
+ if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT))
blks++;
if (GFS2_EAREQ_SIZE_STUFFED(er) > GFS2_SB(&ip->i_inode)->sd_jbsize)
blks += DIV_ROUND_UP(er->er_data_len, GFS2_SB(&ip->i_inode)->sd_jbsize);
@@ -1040,7 +1040,7 @@ int gfs2_ea_set_i(struct gfs2_inode *ip, struct gfs2_ea_request *er)
struct gfs2_ea_location el;
int error;
- if (!ip->i_di.di_eattr) {
+ if (!ip->i_eattr) {
if (er->er_flags & XATTR_REPLACE)
return -ENODATA;
return ea_init(ip, er);
@@ -1051,7 +1051,7 @@ int gfs2_ea_set_i(struct gfs2_inode *ip, struct gfs2_ea_request *er)
return error;
if (el.el_ea) {
- if (ip->i_di.di_flags & GFS2_DIF_APPENDONLY) {
+ if (ip->i_diskflags & GFS2_DIF_APPENDONLY) {
brelse(el.el_bh);
return -EPERM;
}
@@ -1145,7 +1145,7 @@ int gfs2_ea_remove_i(struct gfs2_inode *ip, struct gfs2_ea_request *er)
struct gfs2_ea_location el;
int error;
- if (!ip->i_di.di_eattr)
+ if (!ip->i_eattr)
return -ENODATA;
error = gfs2_ea_find(ip, er, &el);
@@ -1309,7 +1309,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip)
memset(&rlist, 0, sizeof(struct gfs2_rgrp_list));
- error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr, DIO_WAIT, &indbh);
+ error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &indbh);
if (error)
return error;
@@ -1388,7 +1388,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip)
if (bstart)
gfs2_free_meta(ip, bstart, blen);
- ip->i_di.di_flags &= ~GFS2_DIF_EA_INDIRECT;
+ ip->i_diskflags &= ~GFS2_DIF_EA_INDIRECT;
error = gfs2_meta_inode_buffer(ip, &dibh);
if (!error) {
@@ -1416,7 +1416,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
struct buffer_head *dibh;
int error;
- rgd = gfs2_blk2rgrpd(sdp, ip->i_di.di_eattr);
+ rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr);
if (!rgd) {
gfs2_consist_inode(ip);
return -EIO;
@@ -1432,9 +1432,9 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
if (error)
goto out_gunlock;
- gfs2_free_meta(ip, ip->i_di.di_eattr, 1);
+ gfs2_free_meta(ip, ip->i_eattr, 1);
- ip->i_di.di_eattr = 0;
+ ip->i_eattr = 0;
gfs2_add_inode_blocks(&ip->i_inode, -1);
error = gfs2_meta_inode_buffer(ip, &dibh);
@@ -1479,7 +1479,7 @@ int gfs2_ea_dealloc(struct gfs2_inode *ip)
if (error)
goto out_rindex;
- if (ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT) {
+ if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) {
error = ea_dealloc_indirect(ip);
if (error)
goto out_rindex;
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index c962283d4e7..6b983aef785 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -40,6 +40,7 @@
#include "quota.h"
#include "super.h"
#include "util.h"
+#include "bmap.h"
struct gfs2_gl_hash_bucket {
struct hlist_head hb_list;
@@ -61,9 +62,10 @@ static void do_xmote(struct gfs2_glock *gl, struct gfs2_holder *gh, unsigned int
static DECLARE_RWSEM(gfs2_umount_flush_sem);
static struct dentry *gfs2_root;
-static struct task_struct *scand_process;
-static unsigned int scand_secs = 5;
static struct workqueue_struct *glock_workqueue;
+static LIST_HEAD(lru_list);
+static atomic_t lru_count = ATOMIC_INIT(0);
+static DEFINE_SPINLOCK(lru_lock);
#define GFS2_GL_HASH_SHIFT 15
#define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
@@ -174,6 +176,22 @@ static void gfs2_glock_hold(struct gfs2_glock *gl)
}
/**
+ * gfs2_glock_schedule_for_reclaim - Add a glock to the reclaim list
+ * @gl: the glock
+ *
+ */
+
+static void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl)
+{
+ spin_lock(&lru_lock);
+ if (list_empty(&gl->gl_lru) && gl->gl_state != LM_ST_UNLOCKED) {
+ list_add_tail(&gl->gl_lru, &lru_list);
+ atomic_inc(&lru_count);
+ }
+ spin_unlock(&lru_lock);
+}
+
+/**
* gfs2_glock_put() - Decrement reference count on glock
* @gl: The glock to put
*
@@ -187,14 +205,23 @@ int gfs2_glock_put(struct gfs2_glock *gl)
if (atomic_dec_and_test(&gl->gl_ref)) {
hlist_del(&gl->gl_list);
write_unlock(gl_lock_addr(gl->gl_hash));
+ spin_lock(&lru_lock);
+ if (!list_empty(&gl->gl_lru)) {
+ list_del_init(&gl->gl_lru);
+ atomic_dec(&lru_count);
+ }
+ spin_unlock(&lru_lock);
GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_UNLOCKED);
- GLOCK_BUG_ON(gl, !list_empty(&gl->gl_reclaim));
+ GLOCK_BUG_ON(gl, !list_empty(&gl->gl_lru));
GLOCK_BUG_ON(gl, !list_empty(&gl->gl_holders));
glock_free(gl);
rv = 1;
goto out;
}
write_unlock(gl_lock_addr(gl->gl_hash));
+ /* 1 for being hashed, 1 for having state != LM_ST_UNLOCKED */
+ if (atomic_read(&gl->gl_ref) == 2)
+ gfs2_glock_schedule_for_reclaim(gl);
out:
return rv;
}
@@ -289,10 +316,13 @@ static void gfs2_holder_wake(struct gfs2_holder *gh)
* do_promote - promote as many requests as possible on the current queue
* @gl: The glock
*
- * Returns: true if there is a blocked holder at the head of the list
+ * Returns: 1 if there is a blocked holder at the head of the list, or 2
+ * if a type specific operation is underway.
*/
static int do_promote(struct gfs2_glock *gl)
+__releases(&gl->gl_spin)
+__acquires(&gl->gl_spin)
{
const struct gfs2_glock_operations *glops = gl->gl_ops;
struct gfs2_holder *gh, *tmp;
@@ -310,6 +340,8 @@ restart:
ret = glops->go_lock(gh);
spin_lock(&gl->gl_spin);
if (ret) {
+ if (ret == 1)
+ return 2;
gh->gh_error = ret;
list_del_init(&gh->gh_list);
gfs2_holder_wake(gh);
@@ -414,6 +446,7 @@ static void finish_xmote(struct gfs2_glock *gl, unsigned int ret)
const struct gfs2_glock_operations *glops = gl->gl_ops;
struct gfs2_holder *gh;
unsigned state = ret & LM_OUT_ST_MASK;
+ int rv;
spin_lock(&gl->gl_spin);
state_change(gl, state);
@@ -468,7 +501,6 @@ retry:
gfs2_demote_wake(gl);
if (state != LM_ST_UNLOCKED) {
if (glops->go_xmote_bh) {
- int rv;
spin_unlock(&gl->gl_spin);
rv = glops->go_xmote_bh(gl, gh);
if (rv == -EAGAIN)
@@ -479,10 +511,13 @@ retry:
goto out;
}
}
- do_promote(gl);
+ rv = do_promote(gl);
+ if (rv == 2)
+ goto out_locked;
}
out:
clear_bit(GLF_LOCK, &gl->gl_flags);
+out_locked:
spin_unlock(&gl->gl_spin);
gfs2_glock_put(gl);
}
@@ -511,6 +546,8 @@ static unsigned int gfs2_lm_lock(struct gfs2_sbd *sdp, void *lock,
*/
static void do_xmote(struct gfs2_glock *gl, struct gfs2_holder *gh, unsigned int target)
+__releases(&gl->gl_spin)
+__acquires(&gl->gl_spin)
{
const struct gfs2_glock_operations *glops = gl->gl_ops;
struct gfs2_sbd *sdp = gl->gl_sbd;
@@ -576,8 +613,11 @@ static inline struct gfs2_holder *find_first_holder(const struct gfs2_glock *gl)
*/
static void run_queue(struct gfs2_glock *gl, const int nonblock)
+__releases(&gl->gl_spin)
+__acquires(&gl->gl_spin)
{
struct gfs2_holder *gh = NULL;
+ int ret;
if (test_and_set_bit(GLF_LOCK, &gl->gl_flags))
return;
@@ -596,8 +636,11 @@ static void run_queue(struct gfs2_glock *gl, const int nonblock)
} else {
if (test_bit(GLF_DEMOTE, &gl->gl_flags))
gfs2_demote_wake(gl);
- if (do_promote(gl) == 0)
+ ret = do_promote(gl);
+ if (ret == 0)
goto out;
+ if (ret == 2)
+ return;
gh = find_first_waiter(gl);
gl->gl_target = gh->gh_state;
if (!(gh->gh_flags & (LM_FLAG_TRY | LM_FLAG_TRY_1CB)))
@@ -820,7 +863,7 @@ static void wait_on_demote(struct gfs2_glock *gl)
*/
static void handle_callback(struct gfs2_glock *gl, unsigned int state,
- int remote, unsigned long delay)
+ unsigned long delay)
{
int bit = delay ? GLF_PENDING_DEMOTE : GLF_DEMOTE;
@@ -828,9 +871,6 @@ static void handle_callback(struct gfs2_glock *gl, unsigned int state,
if (gl->gl_demote_state == LM_ST_EXCLUSIVE) {
gl->gl_demote_state = state;
gl->gl_demote_time = jiffies;
- if (remote && gl->gl_ops->go_type == LM_TYPE_IOPEN &&
- gl->gl_object)
- gfs2_glock_schedule_for_reclaim(gl);
} else if (gl->gl_demote_state != LM_ST_UNLOCKED &&
gl->gl_demote_state != state) {
gl->gl_demote_state = LM_ST_UNLOCKED;
@@ -877,6 +917,8 @@ void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...)
*/
static inline void add_to_queue(struct gfs2_holder *gh)
+__releases(&gl->gl_spin)
+__acquires(&gl->gl_spin)
{
struct gfs2_glock *gl = gh->gh_gl;
struct gfs2_sbd *sdp = gl->gl_sbd;
@@ -998,7 +1040,7 @@ void gfs2_glock_dq(struct gfs2_holder *gh)
spin_lock(&gl->gl_spin);
if (gh->gh_flags & GL_NOCACHE)
- handle_callback(gl, LM_ST_UNLOCKED, 0, 0);
+ handle_callback(gl, LM_ST_UNLOCKED, 0);
list_del_init(&gh->gh_list);
if (find_first_holder(gl) == NULL) {
@@ -1269,12 +1311,26 @@ static void blocking_cb(struct gfs2_sbd *sdp, struct lm_lockname *name,
delay = gl->gl_ops->go_min_hold_time;
spin_lock(&gl->gl_spin);
- handle_callback(gl, state, 1, delay);
+ handle_callback(gl, state, delay);
spin_unlock(&gl->gl_spin);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, delay) == 0)
gfs2_glock_put(gl);
}
+static void gfs2_jdesc_make_dirty(struct gfs2_sbd *sdp, unsigned int jid)
+{
+ struct gfs2_jdesc *jd;
+
+ spin_lock(&sdp->sd_jindex_spin);
+ list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
+ if (jd->jd_jid != jid)
+ continue;
+ jd->jd_dirty = 1;
+ break;
+ }
+ spin_unlock(&sdp->sd_jindex_spin);
+}
+
/**
* gfs2_glock_cb - Callback used by locking module
* @sdp: Pointer to the superblock
@@ -1338,80 +1394,83 @@ void gfs2_glock_cb(void *cb_data, unsigned int type, void *data)
* Returns: 1 if it's ok
*/
-static int demote_ok(struct gfs2_glock *gl)
+static int demote_ok(const struct gfs2_glock *gl)
{
const struct gfs2_glock_operations *glops = gl->gl_ops;
- int demote = 1;
-
- if (test_bit(GLF_STICKY, &gl->gl_flags))
- demote = 0;
- else if (glops->go_demote_ok)
- demote = glops->go_demote_ok(gl);
-
- return demote;
-}
-
-/**
- * gfs2_glock_schedule_for_reclaim - Add a glock to the reclaim list
- * @gl: the glock
- *
- */
-
-void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl)
-{
- struct gfs2_sbd *sdp = gl->gl_sbd;
- spin_lock(&sdp->sd_reclaim_lock);
- if (list_empty(&gl->gl_reclaim)) {
- gfs2_glock_hold(gl);
- list_add(&gl->gl_reclaim, &sdp->sd_reclaim_list);
- atomic_inc(&sdp->sd_reclaim_count);
- spin_unlock(&sdp->sd_reclaim_lock);
- wake_up(&sdp->sd_reclaim_wq);
- } else
- spin_unlock(&sdp->sd_reclaim_lock);
+ if (gl->gl_state == LM_ST_UNLOCKED)
+ return 0;
+ if (!list_empty(&gl->gl_holders))
+ return 0;
+ if (glops->go_demote_ok)
+ return glops->go_demote_ok(gl);
+ return 1;
}
-/**
- * gfs2_reclaim_glock - process the next glock on the filesystem's reclaim list
- * @sdp: the filesystem
- *
- * Called from gfs2_glockd() glock reclaim daemon, or when promoting a
- * different glock and we notice that there are a lot of glocks in the
- * reclaim list.
- *
- */
-void gfs2_reclaim_glock(struct gfs2_sbd *sdp)
+static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
{
struct gfs2_glock *gl;
- int done_callback = 0;
+ int may_demote;
+ int nr_skipped = 0;
+ int got_ref = 0;
+ LIST_HEAD(skipped);
- spin_lock(&sdp->sd_reclaim_lock);
- if (list_empty(&sdp->sd_reclaim_list)) {
- spin_unlock(&sdp->sd_reclaim_lock);
- return;
- }
- gl = list_entry(sdp->sd_reclaim_list.next,
- struct gfs2_glock, gl_reclaim);
- list_del_init(&gl->gl_reclaim);
- spin_unlock(&sdp->sd_reclaim_lock);
+ if (nr == 0)
+ goto out;
- atomic_dec(&sdp->sd_reclaim_count);
- atomic_inc(&sdp->sd_reclaimed);
+ if (!(gfp_mask & __GFP_FS))
+ return -1;
- spin_lock(&gl->gl_spin);
- if (find_first_holder(gl) == NULL &&
- gl->gl_state != LM_ST_UNLOCKED && demote_ok(gl)) {
- handle_callback(gl, LM_ST_UNLOCKED, 0, 0);
- done_callback = 1;
+ spin_lock(&lru_lock);
+ while(nr && !list_empty(&lru_list)) {
+ gl = list_entry(lru_list.next, struct gfs2_glock, gl_lru);
+ list_del_init(&gl->gl_lru);
+ atomic_dec(&lru_count);
+
+ /* Test for being demotable */
+ if (!test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
+ gfs2_glock_hold(gl);
+ got_ref = 1;
+ spin_unlock(&lru_lock);
+ spin_lock(&gl->gl_spin);
+ may_demote = demote_ok(gl);
+ spin_unlock(&gl->gl_spin);
+ clear_bit(GLF_LOCK, &gl->gl_flags);
+ if (may_demote) {
+ handle_callback(gl, LM_ST_UNLOCKED, 0);
+ nr--;
+ if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
+ gfs2_glock_put(gl);
+ }
+ spin_lock(&lru_lock);
+ if (may_demote)
+ continue;
+ }
+ if (list_empty(&gl->gl_lru) &&
+ (atomic_read(&gl->gl_ref) <= (2 + got_ref))) {
+ nr_skipped++;
+ list_add(&gl->gl_lru, &skipped);
+ }
+ if (got_ref) {
+ spin_unlock(&lru_lock);
+ gfs2_glock_put(gl);
+ spin_lock(&lru_lock);
+ got_ref = 0;
+ }
}
- spin_unlock(&gl->gl_spin);
- if (!done_callback ||
- queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
- gfs2_glock_put(gl);
+ list_splice(&skipped, &lru_list);
+ atomic_add(nr_skipped, &lru_count);
+ spin_unlock(&lru_lock);
+out:
+ return (atomic_read(&lru_count) / 100) * sysctl_vfs_cache_pressure;
}
+static struct shrinker glock_shrinker = {
+ .shrink = gfs2_shrink_glock_memory,
+ .seeks = DEFAULT_SEEKS,
+};
+
/**
* examine_bucket - Call a function for glock in a hash bucket
* @examiner: the function
@@ -1457,26 +1516,6 @@ out:
}
/**
- * scan_glock - look at a glock and see if we can reclaim it
- * @gl: the glock to look at
- *
- */
-
-static void scan_glock(struct gfs2_glock *gl)
-{
- if (gl->gl_ops == &gfs2_inode_glops && gl->gl_object)
- return;
- if (test_bit(GLF_LOCK, &gl->gl_flags))
- return;
-
- spin_lock(&gl->gl_spin);
- if (find_first_holder(gl) == NULL &&
- gl->gl_state != LM_ST_UNLOCKED && demote_ok(gl))
- gfs2_glock_schedule_for_reclaim(gl);
- spin_unlock(&gl->gl_spin);
-}
-
-/**
* clear_glock - look at a glock and see if we can free it from glock cache
* @gl: the glock to look at
*
@@ -1484,23 +1523,16 @@ static void scan_glock(struct gfs2_glock *gl)
static void clear_glock(struct gfs2_glock *gl)
{
- struct gfs2_sbd *sdp = gl->gl_sbd;
- int released;
-
- spin_lock(&sdp->sd_reclaim_lock);
- if (!list_empty(&gl->gl_reclaim)) {
- list_del_init(&gl->gl_reclaim);
- atomic_dec(&sdp->sd_reclaim_count);
- spin_unlock(&sdp->sd_reclaim_lock);
- released = gfs2_glock_put(gl);
- gfs2_assert(sdp, !released);
- } else {
- spin_unlock(&sdp->sd_reclaim_lock);
+ spin_lock(&lru_lock);
+ if (!list_empty(&gl->gl_lru)) {
+ list_del_init(&gl->gl_lru);
+ atomic_dec(&lru_count);
}
+ spin_unlock(&lru_lock);
spin_lock(&gl->gl_spin);
if (find_first_holder(gl) == NULL && gl->gl_state != LM_ST_UNLOCKED)
- handle_callback(gl, LM_ST_UNLOCKED, 0, 0);
+ handle_callback(gl, LM_ST_UNLOCKED, 0);
spin_unlock(&gl->gl_spin);
gfs2_glock_hold(gl);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
@@ -1548,6 +1580,20 @@ void gfs2_gl_hash_clear(struct gfs2_sbd *sdp)
}
}
+void gfs2_glock_finish_truncate(struct gfs2_inode *ip)
+{
+ struct gfs2_glock *gl = ip->i_gl;
+ int ret;
+
+ ret = gfs2_truncatei_resume(ip);
+ gfs2_assert_withdraw(gl->gl_sbd, ret == 0);
+
+ spin_lock(&gl->gl_spin);
+ clear_bit(GLF_LOCK, &gl->gl_flags);
+ run_queue(gl, 1);
+ spin_unlock(&gl->gl_spin);
+}
+
static const char *state2str(unsigned state)
{
switch(state) {
@@ -1623,8 +1669,6 @@ static const char *gflags2str(char *buf, const unsigned long *gflags)
char *p = buf;
if (test_bit(GLF_LOCK, gflags))
*p++ = 'l';
- if (test_bit(GLF_STICKY, gflags))
- *p++ = 's';
if (test_bit(GLF_DEMOTE, gflags))
*p++ = 'D';
if (test_bit(GLF_PENDING_DEMOTE, gflags))
@@ -1743,34 +1787,6 @@ static int gfs2_dump_lockstate(struct gfs2_sbd *sdp)
return error;
}
-/**
- * gfs2_scand - Look for cached glocks and inodes to toss from memory
- * @sdp: Pointer to GFS2 superblock
- *
- * One of these daemons runs, finding candidates to add to sd_reclaim_list.
- * See gfs2_glockd()
- */
-
-static int gfs2_scand(void *data)
-{
- unsigned x;
- unsigned delay;
-
- while (!kthread_should_stop()) {
- for (x = 0; x < GFS2_GL_HASH_SIZE; x++)
- examine_bucket(scan_glock, NULL, x);
- if (freezing(current))
- refrigerator();
- delay = scand_secs;
- if (delay < 1)
- delay = 1;
- schedule_timeout_interruptible(delay * HZ);
- }
-
- return 0;
-}
-
-
int __init gfs2_glock_init(void)
{
@@ -1784,28 +1800,21 @@ int __init gfs2_glock_init(void)
}
#endif
- scand_process = kthread_run(gfs2_scand, NULL, "gfs2_scand");
- if (IS_ERR(scand_process))
- return PTR_ERR(scand_process);
-
glock_workqueue = create_workqueue("glock_workqueue");
- if (IS_ERR(glock_workqueue)) {
- kthread_stop(scand_process);
+ if (IS_ERR(glock_workqueue))
return PTR_ERR(glock_workqueue);
- }
+
+ register_shrinker(&glock_shrinker);
return 0;
}
void gfs2_glock_exit(void)
{
+ unregister_shrinker(&glock_shrinker);
destroy_workqueue(glock_workqueue);
- kthread_stop(scand_process);
}
-module_param(scand_secs, uint, S_IRUGO|S_IWUSR);
-MODULE_PARM_DESC(scand_secs, "The number of seconds between scand runs");
-
static int gfs2_glock_iter_next(struct gfs2_glock_iter *gi)
{
struct gfs2_glock *gl;
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index 695c6b19361..543ec7ecfbd 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -129,9 +129,9 @@ int gfs2_lvb_hold(struct gfs2_glock *gl);
void gfs2_lvb_unhold(struct gfs2_glock *gl);
void gfs2_glock_cb(void *cb_data, unsigned int type, void *data);
-void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl);
void gfs2_reclaim_glock(struct gfs2_sbd *sdp);
void gfs2_gl_hash_clear(struct gfs2_sbd *sdp);
+void gfs2_glock_finish_truncate(struct gfs2_inode *ip);
int __init gfs2_glock_init(void);
void gfs2_glock_exit(void);
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index c6c318c2a0f..8522d3aa64f 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -201,19 +201,12 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
* Returns: 1 if it's ok
*/
-static int inode_go_demote_ok(struct gfs2_glock *gl)
+static int inode_go_demote_ok(const struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
- int demote = 0;
-
- if (!gl->gl_object && !gl->gl_aspace->i_mapping->nrpages)
- demote = 1;
- else if (!sdp->sd_args.ar_localcaching &&
- time_after_eq(jiffies, gl->gl_stamp +
- gfs2_tune_get(sdp, gt_demote_secs) * HZ))
- demote = 1;
-
- return demote;
+ if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
+ return 0;
+ return 1;
}
/**
@@ -227,6 +220,7 @@ static int inode_go_demote_ok(struct gfs2_glock *gl)
static int inode_go_lock(struct gfs2_holder *gh)
{
struct gfs2_glock *gl = gh->gh_gl;
+ struct gfs2_sbd *sdp = gl->gl_sbd;
struct gfs2_inode *ip = gl->gl_object;
int error = 0;
@@ -239,10 +233,16 @@ static int inode_go_lock(struct gfs2_holder *gh)
return error;
}
- if ((ip->i_di.di_flags & GFS2_DIF_TRUNC_IN_PROG) &&
+ if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
(gl->gl_state == LM_ST_EXCLUSIVE) &&
- (gh->gh_state == LM_ST_EXCLUSIVE))
- error = gfs2_truncatei_resume(ip);
+ (gh->gh_state == LM_ST_EXCLUSIVE)) {
+ spin_lock(&sdp->sd_trunc_lock);
+ if (list_empty(&ip->i_trunc_list))
+ list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
+ spin_unlock(&sdp->sd_trunc_lock);
+ wake_up(&sdp->sd_quota_wait);
+ return 1;
+ }
return error;
}
@@ -260,10 +260,13 @@ static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
const struct gfs2_inode *ip = gl->gl_object;
if (ip == NULL)
return 0;
- gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%08lx\n",
+ gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu/%llu\n",
(unsigned long long)ip->i_no_formal_ino,
(unsigned long long)ip->i_no_addr,
- IF2DT(ip->i_inode.i_mode), ip->i_flags);
+ IF2DT(ip->i_inode.i_mode), ip->i_flags,
+ (unsigned int)ip->i_diskflags,
+ (unsigned long long)ip->i_inode.i_size,
+ (unsigned long long)ip->i_disksize);
return 0;
}
@@ -274,7 +277,7 @@ static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
* Returns: 1 if it's ok
*/
-static int rgrp_go_demote_ok(struct gfs2_glock *gl)
+static int rgrp_go_demote_ok(const struct gfs2_glock *gl)
{
return !gl->gl_aspace->i_mapping->nrpages;
}
@@ -318,7 +321,9 @@ static int rgrp_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
const struct gfs2_rgrpd *rgd = gl->gl_object;
if (rgd == NULL)
return 0;
- gfs2_print_dbg(seq, " R: n:%llu\n", (unsigned long long)rgd->rd_addr);
+ gfs2_print_dbg(seq, " R: n:%llu f:%02x b:%u/%u i:%u\n",
+ (unsigned long long)rgd->rd_addr, rgd->rd_flags,
+ rgd->rd_free, rgd->rd_free_clone, rgd->rd_dinodes);
return 0;
}
@@ -374,13 +379,25 @@ static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
}
/**
+ * trans_go_demote_ok
+ * @gl: the glock
+ *
+ * Always returns 0
+ */
+
+static int trans_go_demote_ok(const struct gfs2_glock *gl)
+{
+ return 0;
+}
+
+/**
* quota_go_demote_ok - Check to see if it's ok to unlock a quota glock
* @gl: the glock
*
* Returns: 1 if it's ok
*/
-static int quota_go_demote_ok(struct gfs2_glock *gl)
+static int quota_go_demote_ok(const struct gfs2_glock *gl)
{
return !atomic_read(&gl->gl_lvb_count);
}
@@ -414,6 +431,7 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = {
const struct gfs2_glock_operations gfs2_trans_glops = {
.go_xmote_th = trans_go_sync,
.go_xmote_bh = trans_go_xmote_bh,
+ .go_demote_ok = trans_go_demote_ok,
.go_type = LM_TYPE_NONDISK,
};
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index f566ec1b4e8..608849d0002 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -68,12 +68,6 @@ struct gfs2_bitmap {
u32 bi_len;
};
-struct gfs2_rgrp_host {
- u32 rg_free;
- u32 rg_dinodes;
- u64 rg_igeneration;
-};
-
struct gfs2_rgrpd {
struct list_head rd_list; /* Link with superblock */
struct list_head rd_list_mru;
@@ -83,14 +77,16 @@ struct gfs2_rgrpd {
u32 rd_length; /* length of rgrp header in fs blocks */
u32 rd_data; /* num of data blocks in rgrp */
u32 rd_bitbytes; /* number of bytes in data bitmaps */
- struct gfs2_rgrp_host rd_rg;
+ u32 rd_free;
+ u32 rd_free_clone;
+ u32 rd_dinodes;
+ u64 rd_igeneration;
struct gfs2_bitmap *rd_bits;
- unsigned int rd_bh_count;
struct mutex rd_mutex;
- u32 rd_free_clone;
struct gfs2_log_element rd_le;
- u32 rd_last_alloc;
struct gfs2_sbd *rd_sbd;
+ unsigned int rd_bh_count;
+ u32 rd_last_alloc;
unsigned char rd_flags;
#define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
#define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
@@ -129,7 +125,7 @@ struct gfs2_glock_operations {
void (*go_xmote_th) (struct gfs2_glock *gl);
int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
void (*go_inval) (struct gfs2_glock *gl, int flags);
- int (*go_demote_ok) (struct gfs2_glock *gl);
+ int (*go_demote_ok) (const struct gfs2_glock *gl);
int (*go_lock) (struct gfs2_holder *gh);
void (*go_unlock) (struct gfs2_holder *gh);
int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
@@ -159,7 +155,6 @@ struct gfs2_holder {
enum {
GLF_LOCK = 1,
- GLF_STICKY = 2,
GLF_DEMOTE = 3,
GLF_PENDING_DEMOTE = 4,
GLF_DEMOTE_IN_PROGRESS = 5,
@@ -194,7 +189,7 @@ struct gfs2_glock {
unsigned long gl_tchange;
void *gl_object;
- struct list_head gl_reclaim;
+ struct list_head gl_lru;
struct gfs2_sbd *gl_sbd;
@@ -233,29 +228,24 @@ enum {
GIF_USER = 4, /* user inode, not metadata addr space */
};
-struct gfs2_dinode_host {
- u64 di_size; /* number of bytes in file */
- u64 di_generation; /* generation number for NFS */
- u32 di_flags; /* GFS2_DIF_... */
- /* These only apply to directories */
- u32 di_entries; /* The number of entries in the directory */
- u64 di_eattr; /* extended attribute block number */
-};
struct gfs2_inode {
struct inode i_inode;
u64 i_no_addr;
u64 i_no_formal_ino;
+ u64 i_generation;
+ u64 i_eattr;
+ loff_t i_disksize;
unsigned long i_flags; /* GIF_... */
-
- struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
-
struct gfs2_glock *i_gl; /* Move into i_gh? */
struct gfs2_holder i_iopen_gh;
struct gfs2_holder i_gh; /* for prepare/commit_write only */
struct gfs2_alloc *i_alloc;
u64 i_goal; /* goal block for allocations */
struct rw_semaphore i_rw_mutex;
+ struct list_head i_trunc_list;
+ u32 i_entries;
+ u32 i_diskflags;
u8 i_height;
u8 i_depth;
};
@@ -406,13 +396,11 @@ struct gfs2_args {
struct gfs2_tune {
spinlock_t gt_spin;
- unsigned int gt_demote_secs; /* Cache retention for unheld glock */
unsigned int gt_incore_log_blocks;
unsigned int gt_log_flush_secs;
unsigned int gt_recoverd_secs;
unsigned int gt_logd_secs;
- unsigned int gt_quotad_secs;
unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
@@ -488,10 +476,6 @@ struct gfs2_sbd {
/* Lock Stuff */
struct lm_lockstruct sd_lockstruct;
- struct list_head sd_reclaim_list;
- spinlock_t sd_reclaim_lock;
- wait_queue_head_t sd_reclaim_wq;
- atomic_t sd_reclaim_count;
struct gfs2_holder sd_live_gh;
struct gfs2_glock *sd_rename_gl;
struct gfs2_glock *sd_trans_gl;
@@ -519,7 +503,6 @@ struct gfs2_sbd {
spinlock_t sd_statfs_spin;
struct gfs2_statfs_change_host sd_statfs_master;
struct gfs2_statfs_change_host sd_statfs_local;
- unsigned long sd_statfs_sync_time;
/* Resource group stuff */
@@ -552,8 +535,6 @@ struct gfs2_sbd {
struct task_struct *sd_recoverd_process;
struct task_struct *sd_logd_process;
struct task_struct *sd_quotad_process;
- struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
- unsigned int sd_glockd_num;
/* Quota stuff */
@@ -561,13 +542,15 @@ struct gfs2_sbd {
atomic_t sd_quota_count;
spinlock_t sd_quota_spin;
struct mutex sd_quota_mutex;
+ wait_queue_head_t sd_quota_wait;
+ struct list_head sd_trunc_list;
+ spinlock_t sd_trunc_lock;
unsigned int sd_quota_slots;
unsigned int sd_quota_chunks;
unsigned char **sd_quota_bitmap;
u64 sd_quota_sync_gen;
- unsigned long sd_quota_sync_time;
/* Log stuff */
@@ -624,10 +607,6 @@ struct gfs2_sbd {
struct mutex sd_freeze_lock;
unsigned int sd_freeze_count;
- /* Counters */
-
- atomic_t sd_reclaimed;
-
char sd_fsname[GFS2_FSNAME_LEN];
char sd_table_name[GFS2_FSNAME_LEN];
char sd_proto_name[GFS2_FSNAME_LEN];
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index d57616840e8..3b87c188da4 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -32,7 +32,6 @@
#include "log.h"
#include "meta_io.h"
#include "ops_address.h"
-#include "ops_inode.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
@@ -248,7 +247,6 @@ fail:
static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
{
- struct gfs2_dinode_host *di = &ip->i_di;
const struct gfs2_dinode *str = buf;
struct timespec atime;
u16 height, depth;
@@ -274,8 +272,8 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
* to do that.
*/
ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink);
- di->di_size = be64_to_cpu(str->di_size);
- i_size_write(&ip->i_inode, di->di_size);
+ ip->i_disksize = be64_to_cpu(str->di_size);
+ i_size_write(&ip->i_inode, ip->i_disksize);
gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
atime.tv_sec = be64_to_cpu(str->di_atime);
atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
@@ -287,9 +285,9 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
ip->i_goal = be64_to_cpu(str->di_goal_meta);
- di->di_generation = be64_to_cpu(str->di_generation);
+ ip->i_generation = be64_to_cpu(str->di_generation);
- di->di_flags = be32_to_cpu(str->di_flags);
+ ip->i_diskflags = be32_to_cpu(str->di_flags);
gfs2_set_inode_flags(&ip->i_inode);
height = be16_to_cpu(str->di_height);
if (unlikely(height > GFS2_MAX_META_HEIGHT))
@@ -300,9 +298,9 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
goto corrupt;
ip->i_depth = (u8)depth;
- di->di_entries = be32_to_cpu(str->di_entries);
+ ip->i_entries = be32_to_cpu(str->di_entries);
- di->di_eattr = be64_to_cpu(str->di_eattr);
+ ip->i_eattr = be64_to_cpu(str->di_eattr);
if (S_ISREG(ip->i_inode.i_mode))
gfs2_set_aops(&ip->i_inode);
@@ -388,7 +386,6 @@ int gfs2_dinode_dealloc(struct gfs2_inode *ip)
gfs2_free_di(rgd, ip);
gfs2_trans_end(sdp);
- clear_bit(GLF_STICKY, &ip->i_gl->gl_flags);
out_rg_gunlock:
gfs2_glock_dq_uninit(&al->al_rgd_gh);
@@ -690,7 +687,7 @@ static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
return error;
}
- if (dip->i_di.di_entries == (u32)-1)
+ if (dip->i_entries == (u32)-1)
return -EFBIG;
if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
return -EMLINK;
@@ -790,11 +787,11 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
di->di_flags = 0;
if (S_ISREG(mode)) {
- if ((dip->i_di.di_flags & GFS2_DIF_INHERIT_JDATA) ||
+ if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
gfs2_tune_get(sdp, gt_new_files_jdata))
di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
} else if (S_ISDIR(mode)) {
- di->di_flags |= cpu_to_be32(dip->i_di.di_flags &
+ di->di_flags |= cpu_to_be32(dip->i_diskflags &
GFS2_DIF_INHERIT_JDATA);
}
@@ -1068,7 +1065,7 @@ int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
struct qstr dotname;
int error;
- if (ip->i_di.di_entries != 2) {
+ if (ip->i_entries != 2) {
if (gfs2_consist_inode(ip))
gfs2_dinode_print(ip);
return -EIO;
@@ -1168,7 +1165,7 @@ int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len)
return error;
}
- if (!ip->i_di.di_size) {
+ if (!ip->i_disksize) {
gfs2_consist_inode(ip);
error = -EIO;
goto out;
@@ -1178,7 +1175,7 @@ int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len)
if (error)
goto out;
- x = ip->i_di.di_size + 1;
+ x = ip->i_disksize + 1;
if (x > *len) {
*buf = kmalloc(x, GFP_NOFS);
if (!*buf) {
@@ -1242,7 +1239,6 @@ int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
{
- const struct gfs2_dinode_host *di = &ip->i_di;
struct gfs2_dinode *str = buf;
str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
@@ -1256,7 +1252,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
- str->di_size = cpu_to_be64(di->di_size);
+ str->di_size = cpu_to_be64(ip->i_disksize);
str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
@@ -1264,17 +1260,17 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
str->di_goal_meta = cpu_to_be64(ip->i_goal);
str->di_goal_data = cpu_to_be64(ip->i_goal);
- str->di_generation = cpu_to_be64(di->di_generation);
+ str->di_generation = cpu_to_be64(ip->i_generation);
- str->di_flags = cpu_to_be32(di->di_flags);
+ str->di_flags = cpu_to_be32(ip->i_diskflags);
str->di_height = cpu_to_be16(ip->i_height);
str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
- !(ip->i_di.di_flags & GFS2_DIF_EXHASH) ?
+ !(ip->i_diskflags & GFS2_DIF_EXHASH) ?
GFS2_FORMAT_DE : 0);
str->di_depth = cpu_to_be16(ip->i_depth);
- str->di_entries = cpu_to_be32(di->di_entries);
+ str->di_entries = cpu_to_be32(ip->i_entries);
- str->di_eattr = cpu_to_be64(di->di_eattr);
+ str->di_eattr = cpu_to_be64(ip->i_eattr);
str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec);
str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec);
str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec);
@@ -1282,22 +1278,21 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
void gfs2_dinode_print(const struct gfs2_inode *ip)
{
- const struct gfs2_dinode_host *di = &ip->i_di;
-
printk(KERN_INFO " no_formal_ino = %llu\n",
(unsigned long long)ip->i_no_formal_ino);
printk(KERN_INFO " no_addr = %llu\n",
(unsigned long long)ip->i_no_addr);
- printk(KERN_INFO " di_size = %llu\n", (unsigned long long)di->di_size);
+ printk(KERN_INFO " i_disksize = %llu\n",
+ (unsigned long long)ip->i_disksize);
printk(KERN_INFO " blocks = %llu\n",
(unsigned long long)gfs2_get_inode_blocks(&ip->i_inode));
printk(KERN_INFO " i_goal = %llu\n",
(unsigned long long)ip->i_goal);
- printk(KERN_INFO " di_flags = 0x%.8X\n", di->di_flags);
+ printk(KERN_INFO " i_diskflags = 0x%.8X\n", ip->i_diskflags);
printk(KERN_INFO " i_height = %u\n", ip->i_height);
printk(KERN_INFO " i_depth = %u\n", ip->i_depth);
- printk(KERN_INFO " di_entries = %u\n", di->di_entries);
- printk(KERN_INFO " di_eattr = %llu\n",
- (unsigned long long)di->di_eattr);
+ printk(KERN_INFO " i_entries = %u\n", ip->i_entries);
+ printk(KERN_INFO " i_eattr = %llu\n",
+ (unsigned long long)ip->i_eattr);
}
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index 2d43f69610a..d5329364cdf 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -10,6 +10,7 @@
#ifndef __INODE_DOT_H__
#define __INODE_DOT_H__
+#include <linux/fs.h>
#include "util.h"
static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
@@ -19,7 +20,7 @@ static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
{
- return ip->i_di.di_flags & GFS2_DIF_JDATA;
+ return ip->i_diskflags & GFS2_DIF_JDATA;
}
static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
@@ -97,5 +98,15 @@ struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
void gfs2_dinode_print(const struct gfs2_inode *ip);
+extern const struct inode_operations gfs2_file_iops;
+extern const struct inode_operations gfs2_dir_iops;
+extern const struct inode_operations gfs2_symlink_iops;
+extern const struct file_operations gfs2_file_fops;
+extern const struct file_operations gfs2_dir_fops;
+extern const struct file_operations gfs2_file_fops_nolock;
+extern const struct file_operations gfs2_dir_fops_nolock;
+
+extern void gfs2_set_inode_flags(struct inode *inode);
+
#endif /* __INODE_DOT_H__ */
diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index 0c4cbe6c828..1aa7eb6a022 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -194,17 +194,25 @@ out:
static void gdlm_recovery_done(void *lockspace, unsigned int jid,
unsigned int message)
{
+ char env_jid[20];
+ char env_status[20];
+ char *envp[] = { env_jid, env_status, NULL };
struct gdlm_ls *ls = lockspace;
ls->recover_jid_done = jid;
ls->recover_jid_status = message;
- kobject_uevent(&ls->kobj, KOBJ_CHANGE);
+ sprintf(env_jid, "JID=%d", jid);
+ sprintf(env_status, "RECOVERY=%s",
+ message == LM_RD_SUCCESS ? "Done" : "Failed");
+ kobject_uevent_env(&ls->kobj, KOBJ_CHANGE, envp);
}
static void gdlm_others_may_mount(void *lockspace)
{
+ char *message = "FIRSTMOUNT=Done";
+ char *envp[] = { message, NULL };
struct gdlm_ls *ls = lockspace;
ls->first_done = 1;
- kobject_uevent(&ls->kobj, KOBJ_CHANGE);
+ kobject_uevent_env(&ls->kobj, KOBJ_CHANGE, envp);
}
/* Userspace gets the offline uevent, blocks new gfs locks on
diff --git a/fs/gfs2/locking/dlm/sysfs.c b/fs/gfs2/locking/dlm/sysfs.c
index 4ec571c3d8a..9b7edcf7bd4 100644
--- a/fs/gfs2/locking/dlm/sysfs.c
+++ b/fs/gfs2/locking/dlm/sysfs.c
@@ -195,9 +195,23 @@ void gdlm_kobject_release(struct gdlm_ls *ls)
kobject_put(&ls->kobj);
}
+static int gdlm_uevent(struct kset *kset, struct kobject *kobj,
+ struct kobj_uevent_env *env)
+{
+ struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj);
+ add_uevent_var(env, "LOCKTABLE=%s:%s", ls->clustername, ls->fsname);
+ add_uevent_var(env, "LOCKPROTO=lock_dlm");
+ return 0;
+}
+
+static struct kset_uevent_ops gdlm_uevent_ops = {
+ .uevent = gdlm_uevent,
+};
+
+
int gdlm_sysfs_init(void)
{
- gdlm_kset = kset_create_and_add("lock_dlm", NULL, kernel_kobj);
+ gdlm_kset = kset_create_and_add("lock_dlm", &gdlm_uevent_ops, kernel_kobj);
if (!gdlm_kset) {
printk(KERN_WARNING "%s: can not create kset\n", __func__);
return -ENOMEM;
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index bb2cc303ac2..7cacfde3219 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -19,7 +19,7 @@
#include "gfs2.h"
#include "incore.h"
-#include "ops_fstype.h"
+#include "super.h"
#include "sys.h"
#include "util.h"
#include "glock.h"
@@ -30,6 +30,7 @@ static void gfs2_init_inode_once(void *foo)
inode_init_once(&ip->i_inode);
init_rwsem(&ip->i_rw_mutex);
+ INIT_LIST_HEAD(&ip->i_trunc_list);
ip->i_alloc = NULL;
}
@@ -42,7 +43,7 @@ static void gfs2_init_glock_once(void *foo)
INIT_LIST_HEAD(&gl->gl_holders);
gl->gl_lvb = NULL;
atomic_set(&gl->gl_lvb_count, 0);
- INIT_LIST_HEAD(&gl->gl_reclaim);
+ INIT_LIST_HEAD(&gl->gl_lru);
INIT_LIST_HEAD(&gl->gl_ail_list);
atomic_set(&gl->gl_ail_count, 0);
}
@@ -93,6 +94,12 @@ static int __init init_gfs2_fs(void)
if (!gfs2_rgrpd_cachep)
goto fail;
+ gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
+ sizeof(struct gfs2_quota_data),
+ 0, 0, NULL);
+ if (!gfs2_quotad_cachep)
+ goto fail;
+
error = register_filesystem(&gfs2_fs_type);
if (error)
goto fail;
@@ -112,6 +119,9 @@ fail_unregister:
fail:
gfs2_glock_exit();
+ if (gfs2_quotad_cachep)
+ kmem_cache_destroy(gfs2_quotad_cachep);
+
if (gfs2_rgrpd_cachep)
kmem_cache_destroy(gfs2_rgrpd_cachep);
@@ -140,6 +150,7 @@ static void __exit exit_gfs2_fs(void)
unregister_filesystem(&gfs2_fs_type);
unregister_filesystem(&gfs2meta_fs_type);
+ kmem_cache_destroy(gfs2_quotad_cachep);
kmem_cache_destroy(gfs2_rgrpd_cachep);
kmem_cache_destroy(gfs2_bufdata_cachep);
kmem_cache_destroy(gfs2_inode_cachep);
diff --git a/fs/gfs2/mount.c b/fs/gfs2/mount.c
index f96eb90a2cf..3cb0a44ba02 100644
--- a/fs/gfs2/mount.c
+++ b/fs/gfs2/mount.c
@@ -32,7 +32,6 @@ enum {
Opt_debug,
Opt_nodebug,
Opt_upgrade,
- Opt_num_glockd,
Opt_acl,
Opt_noacl,
Opt_quota_off,
@@ -57,7 +56,6 @@ static const match_table_t tokens = {
{Opt_debug, "debug"},
{Opt_nodebug, "nodebug"},
{Opt_upgrade, "upgrade"},
- {Opt_num_glockd, "num_glockd=%d"},
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
{Opt_quota_off, "quota=off"},
@@ -87,16 +85,7 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
int error = 0;
if (!remount) {
- /* If someone preloaded options, use those instead */
- spin_lock(&gfs2_sys_margs_lock);
- if (gfs2_sys_margs) {
- data = gfs2_sys_margs;
- gfs2_sys_margs = NULL;
- }
- spin_unlock(&gfs2_sys_margs_lock);
-
/* Set some defaults */
- args->ar_num_glockd = GFS2_GLOCKD_DEFAULT;
args->ar_quota = GFS2_QUOTA_DEFAULT;
args->ar_data = GFS2_DATA_DEFAULT;
}
@@ -105,7 +94,7 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
process them */
for (options = data; (o = strsep(&options, ",")); ) {
- int token, option;
+ int token;
substring_t tmp[MAX_OPT_ARGS];
if (!*o)
@@ -196,22 +185,6 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
goto cant_remount;
args->ar_upgrade = 1;
break;
- case Opt_num_glockd:
- if ((error = match_int(&tmp[0], &option))) {
- fs_info(sdp, "problem getting num_glockd\n");
- goto out_error;
- }
-
- if (remount && option != args->ar_num_glockd)
- goto cant_remount;
- if (!option || option > GFS2_GLOCKD_MAX) {
- fs_info(sdp, "0 < num_glockd <= %u (not %u)\n",
- GFS2_GLOCKD_MAX, option);
- error = -EINVAL;
- goto out_error;
- }
- args->ar_num_glockd = option;
- break;
case Opt_acl:
args->ar_posix_acl = 1;
sdp->sd_vfs->s_flags |= MS_POSIXACL;
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 15f710f2d4d..4ddab67867e 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -210,25 +210,23 @@ static int gfs2_jdata_writepage(struct page *page, struct writeback_control *wbc
{
struct inode *inode = page->mapping->host;
struct gfs2_sbd *sdp = GFS2_SB(inode);
- int error;
+ int ret;
int done_trans = 0;
- error = gfs2_writepage_common(page, wbc);
- if (error <= 0)
- return error;
-
if (PageChecked(page)) {
if (wbc->sync_mode != WB_SYNC_ALL)
goto out_ignore;
- error = gfs2_trans_begin(sdp, RES_DINODE + 1, 0);
- if (error)
+ ret = gfs2_trans_begin(sdp, RES_DINODE + 1, 0);
+ if (ret)
goto out_ignore;
done_trans = 1;
}
- error = __gfs2_jdata_writepage(page, wbc);
+ ret = gfs2_writepage_common(page, wbc);
+ if (ret > 0)
+ ret = __gfs2_jdata_writepage(page, wbc);
if (done_trans)
gfs2_trans_end(sdp);
- return error;
+ return ret;
out_ignore:
redirty_page_for_writepage(wbc, page);
@@ -453,8 +451,8 @@ static int stuffed_readpage(struct gfs2_inode *ip, struct page *page)
kaddr = kmap_atomic(page, KM_USER0);
memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode),
- ip->i_di.di_size);
- memset(kaddr + ip->i_di.di_size, 0, PAGE_CACHE_SIZE - ip->i_di.di_size);
+ ip->i_disksize);
+ memset(kaddr + ip->i_disksize, 0, PAGE_CACHE_SIZE - ip->i_disksize);
kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(page);
brelse(dibh);
@@ -627,7 +625,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
{
struct gfs2_inode *ip = GFS2_I(mapping->host);
struct gfs2_sbd *sdp = GFS2_SB(mapping->host);
- unsigned int data_blocks, ind_blocks, rblocks;
+ unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
int alloc_required;
int error = 0;
struct gfs2_alloc *al;
@@ -641,11 +639,13 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
if (unlikely(error))
goto out_uninit;
- gfs2_write_calc_reserv(ip, len, &data_blocks, &ind_blocks);
error = gfs2_write_alloc_required(ip, pos, len, &alloc_required);
if (error)
goto out_unlock;
+ if (alloc_required || gfs2_is_jdata(ip))
+ gfs2_write_calc_reserv(ip, len, &data_blocks, &ind_blocks);
+
if (alloc_required) {
al = gfs2_alloc_get(ip);
if (!al) {
@@ -675,6 +675,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
goto out_trans_fail;
error = -ENOMEM;
+ flags |= AOP_FLAG_NOFS;
page = grab_cache_page_write_begin(mapping, index, flags);
*pagep = page;
if (unlikely(!page))
@@ -782,7 +783,7 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh,
if (inode->i_size < to) {
i_size_write(inode, to);
- ip->i_di.di_size = inode->i_size;
+ ip->i_disksize = inode->i_size;
di->di_size = cpu_to_be64(inode->i_size);
mark_inode_dirty(inode);
}
@@ -847,9 +848,9 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
- if (likely(ret >= 0) && (inode->i_size > ip->i_di.di_size)) {
+ if (likely(ret >= 0) && (inode->i_size > ip->i_disksize)) {
di = (struct gfs2_dinode *)dibh->b_data;
- ip->i_di.di_size = inode->i_size;
+ ip->i_disksize = inode->i_size;
di->di_size = cpu_to_be64(inode->i_size);
mark_inode_dirty(inode);
}
diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c
index 4a5e676b442..c2ad36330ca 100644
--- a/fs/gfs2/ops_dentry.c
+++ b/fs/gfs2/ops_dentry.c
@@ -19,7 +19,7 @@
#include "incore.h"
#include "dir.h"
#include "glock.h"
-#include "ops_dentry.h"
+#include "super.h"
#include "util.h"
#include "inode.h"
diff --git a/fs/gfs2/ops_dentry.h b/fs/gfs2/ops_dentry.h
deleted file mode 100644
index 5caa3db4d3f..00000000000
--- a/fs/gfs2/ops_dentry.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __OPS_DENTRY_DOT_H__
-#define __OPS_DENTRY_DOT_H__
-
-#include <linux/dcache.h>
-
-extern struct dentry_operations gfs2_dops;
-
-#endif /* __OPS_DENTRY_DOT_H__ */
diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index bbb8c36403a..7fdeb14ddd1 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -22,8 +22,7 @@
#include "glock.h"
#include "glops.h"
#include "inode.h"
-#include "ops_dentry.h"
-#include "ops_fstype.h"
+#include "super.h"
#include "rgrp.h"
#include "util.h"
@@ -214,7 +213,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb,
}
error = -EIO;
- if (GFS2_I(inode)->i_di.di_flags & GFS2_DIF_SYSTEM) {
+ if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM) {
iput(inode);
goto fail;
}
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 3a747f8e218..93fe41b67f9 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -39,7 +39,6 @@
#include "util.h"
#include "eaops.h"
#include "ops_address.h"
-#include "ops_inode.h"
/**
* gfs2_llseek - seek to a location in a file
@@ -158,8 +157,8 @@ static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
if (error)
return error;
- fsflags = fsflags_cvt(gfs2_to_fsflags, ip->i_di.di_flags);
- if (!S_ISDIR(inode->i_mode) && ip->i_di.di_flags & GFS2_DIF_JDATA)
+ fsflags = fsflags_cvt(gfs2_to_fsflags, ip->i_diskflags);
+ if (!S_ISDIR(inode->i_mode) && ip->i_diskflags & GFS2_DIF_JDATA)
fsflags |= FS_JOURNAL_DATA_FL;
if (put_user(fsflags, ptr))
error = -EFAULT;
@@ -172,17 +171,16 @@ static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
void gfs2_set_inode_flags(struct inode *inode)
{
struct gfs2_inode *ip = GFS2_I(inode);
- struct gfs2_dinode_host *di = &ip->i_di;
unsigned int flags = inode->i_flags;
flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
- if (di->di_flags & GFS2_DIF_IMMUTABLE)
+ if (ip->i_diskflags & GFS2_DIF_IMMUTABLE)
flags |= S_IMMUTABLE;
- if (di->di_flags & GFS2_DIF_APPENDONLY)
+ if (ip->i_diskflags & GFS2_DIF_APPENDONLY)
flags |= S_APPEND;
- if (di->di_flags & GFS2_DIF_NOATIME)
+ if (ip->i_diskflags & GFS2_DIF_NOATIME)
flags |= S_NOATIME;
- if (di->di_flags & GFS2_DIF_SYNC)
+ if (ip->i_diskflags & GFS2_DIF_SYNC)
flags |= S_SYNC;
inode->i_flags = flags;
}
@@ -221,7 +219,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
if (error)
goto out_drop_write;
- flags = ip->i_di.di_flags;
+ flags = ip->i_diskflags;
new_flags = (flags & ~mask) | (reqflags & mask);
if ((new_flags ^ flags) == 0)
goto out;
@@ -260,7 +258,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
if (error)
goto out_trans_end;
gfs2_trans_add_bh(ip->i_gl, bh, 1);
- ip->i_di.di_flags = new_flags;
+ ip->i_diskflags = new_flags;
gfs2_dinode_out(ip, bh->b_data);
brelse(bh);
gfs2_set_inode_flags(inode);
@@ -344,7 +342,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
unsigned long last_index;
- u64 pos = page->index << (PAGE_CACHE_SIZE - inode->i_blkbits);
+ u64 pos = page->index << PAGE_CACHE_SHIFT;
unsigned int data_blocks, ind_blocks, rblocks;
int alloc_required = 0;
struct gfs2_holder gh;
@@ -357,7 +355,6 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
goto out;
set_bit(GIF_SW_PAGED, &ip->i_flags);
- gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
ret = gfs2_write_alloc_required(ip, pos, PAGE_CACHE_SIZE, &alloc_required);
if (ret || !alloc_required)
goto out_unlock;
@@ -369,6 +366,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
ret = gfs2_quota_lock_check(ip);
if (ret)
goto out_alloc_put;
+ gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
al->al_requested = data_blocks + ind_blocks;
ret = gfs2_inplace_reserve(ip);
if (ret)
@@ -479,7 +477,7 @@ static int gfs2_open(struct inode *inode, struct file *file)
goto fail;
if (!(file->f_flags & O_LARGEFILE) &&
- ip->i_di.di_size > MAX_NON_LFS) {
+ ip->i_disksize > MAX_NON_LFS) {
error = -EOVERFLOW;
goto fail_gunlock;
}
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index b117fcf2c4f..f91eebdde58 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -22,20 +22,18 @@
#include "gfs2.h"
#include "incore.h"
#include "bmap.h"
-#include "daemon.h"
#include "glock.h"
#include "glops.h"
#include "inode.h"
#include "mount.h"
-#include "ops_fstype.h"
-#include "ops_dentry.h"
-#include "ops_super.h"
#include "recovery.h"
#include "rgrp.h"
#include "super.h"
#include "sys.h"
#include "util.h"
#include "log.h"
+#include "quota.h"
+#include "dir.h"
#define DO 0
#define UNDO 1
@@ -58,12 +56,10 @@ static void gfs2_tune_init(struct gfs2_tune *gt)
{
spin_lock_init(&gt->gt_spin);
- gt->gt_demote_secs = 300;
gt->gt_incore_log_blocks = 1024;
gt->gt_log_flush_secs = 60;
gt->gt_recoverd_secs = 60;
gt->gt_logd_secs = 1;
- gt->gt_quotad_secs = 5;
gt->gt_quota_simul_sync = 64;
gt->gt_quota_warn_period = 10;
gt->gt_quota_scale_num = 1;
@@ -91,10 +87,6 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
gfs2_tune_init(&sdp->sd_tune);
- INIT_LIST_HEAD(&sdp->sd_reclaim_list);
- spin_lock_init(&sdp->sd_reclaim_lock);
- init_waitqueue_head(&sdp->sd_reclaim_wq);
-
mutex_init(&sdp->sd_inum_mutex);
spin_lock_init(&sdp->sd_statfs_spin);
@@ -110,6 +102,9 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
INIT_LIST_HEAD(&sdp->sd_quota_list);
spin_lock_init(&sdp->sd_quota_spin);
mutex_init(&sdp->sd_quota_mutex);
+ init_waitqueue_head(&sdp->sd_quota_wait);
+ INIT_LIST_HEAD(&sdp->sd_trunc_list);
+ spin_lock_init(&sdp->sd_trunc_lock);
spin_lock_init(&sdp->sd_log_lock);
@@ -443,24 +438,11 @@ out:
static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
int undo)
{
- struct task_struct *p;
int error = 0;
if (undo)
goto fail_trans;
- for (sdp->sd_glockd_num = 0;
- sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd;
- sdp->sd_glockd_num++) {
- p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd");
- error = IS_ERR(p);
- if (error) {
- fs_err(sdp, "can't start glockd thread: %d\n", error);
- goto fail;
- }
- sdp->sd_glockd_process[sdp->sd_glockd_num] = p;
- }
-
error = gfs2_glock_nq_num(sdp,
GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE,
@@ -493,7 +475,6 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
fs_err(sdp, "can't create transaction glock: %d\n", error);
goto fail_rename;
}
- set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags);
return 0;
@@ -506,9 +487,6 @@ fail_live:
fail_mount:
gfs2_glock_dq_uninit(mount_gh);
fail:
- while (sdp->sd_glockd_num--)
- kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
-
return error;
}
@@ -620,7 +598,7 @@ static int map_journal_extents(struct gfs2_sbd *sdp)
prev_db = 0;
- for (lb = 0; lb < ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift; lb++) {
+ for (lb = 0; lb < ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; lb++) {
bh.b_state = 0;
bh.b_blocknr = 0;
bh.b_size = 1 << ip->i_inode.i_blkbits;
@@ -661,6 +639,72 @@ static void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp)
sdp->sd_lockstruct.ls_lockspace);
}
+/**
+ * gfs2_jindex_hold - Grab a lock on the jindex
+ * @sdp: The GFS2 superblock
+ * @ji_gh: the holder for the jindex glock
+ *
+ * Returns: errno
+ */
+
+static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
+{
+ struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex);
+ struct qstr name;
+ char buf[20];
+ struct gfs2_jdesc *jd;
+ int error;
+
+ name.name = buf;
+
+ mutex_lock(&sdp->sd_jindex_mutex);
+
+ for (;;) {
+ error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
+ if (error)
+ break;
+
+ name.len = sprintf(buf, "journal%u", sdp->sd_journals);
+ name.hash = gfs2_disk_hash(name.name, name.len);
+
+ error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
+ if (error == -ENOENT) {
+ error = 0;
+ break;
+ }
+
+ gfs2_glock_dq_uninit(ji_gh);
+
+ if (error)
+ break;
+
+ error = -ENOMEM;
+ jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL);
+ if (!jd)
+ break;
+
+ INIT_LIST_HEAD(&jd->extent_list);
+ jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
+ if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
+ if (!jd->jd_inode)
+ error = -ENOENT;
+ else
+ error = PTR_ERR(jd->jd_inode);
+ kfree(jd);
+ break;
+ }
+
+ spin_lock(&sdp->sd_jindex_spin);
+ jd->jd_jid = sdp->sd_journals++;
+ list_add_tail(&jd->jd_list, &sdp->sd_jindex_list);
+ spin_unlock(&sdp->sd_jindex_spin);
+ }
+
+ mutex_unlock(&sdp->sd_jindex_mutex);
+
+ return error;
+}
+
static int init_journal(struct gfs2_sbd *sdp, int undo)
{
struct inode *master = sdp->sd_master_dir->d_inode;
@@ -681,7 +725,6 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
return PTR_ERR(sdp->sd_jindex);
}
ip = GFS2_I(sdp->sd_jindex);
- set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
/* Load in the journal index special file */
@@ -832,7 +875,6 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo)
goto fail_statfs;
}
ip = GFS2_I(sdp->sd_rindex);
- set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
sdp->sd_rindex_uptodate = 0;
/* Read in the quota inode */
@@ -973,9 +1015,6 @@ static int init_threads(struct gfs2_sbd *sdp, int undo)
}
sdp->sd_logd_process = p;
- sdp->sd_statfs_sync_time = jiffies;
- sdp->sd_quota_sync_time = jiffies;
-
p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad");
error = IS_ERR(p);
if (error) {
@@ -1224,17 +1263,21 @@ static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags,
static void gfs2_kill_sb(struct super_block *sb)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
- if (sdp) {
- gfs2_meta_syncfs(sdp);
- dput(sdp->sd_root_dir);
- dput(sdp->sd_master_dir);
- sdp->sd_root_dir = NULL;
- sdp->sd_master_dir = NULL;
+
+ if (sdp == NULL) {
+ kill_block_super(sb);
+ return;
}
+
+ gfs2_meta_syncfs(sdp);
+ dput(sdp->sd_root_dir);
+ dput(sdp->sd_master_dir);
+ sdp->sd_root_dir = NULL;
+ sdp->sd_master_dir = NULL;
shrink_dcache_sb(sb);
kill_block_super(sb);
- if (sdp)
- gfs2_delete_debugfs_file(sdp);
+ gfs2_delete_debugfs_file(sdp);
+ kfree(sdp);
}
struct file_system_type gfs2_fs_type = {
diff --git a/fs/gfs2/ops_fstype.h b/fs/gfs2/ops_fstype.h
deleted file mode 100644
index da849051183..00000000000
--- a/fs/gfs2/ops_fstype.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __OPS_FSTYPE_DOT_H__
-#define __OPS_FSTYPE_DOT_H__
-
-#include <linux/fs.h>
-
-extern struct file_system_type gfs2_fs_type;
-extern struct file_system_type gfs2meta_fs_type;
-extern const struct export_operations gfs2_export_ops;
-
-#endif /* __OPS_FSTYPE_DOT_H__ */
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index d232991b904..49877546beb 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -19,6 +19,7 @@
#include <linux/gfs2_ondisk.h>
#include <linux/crc32.h>
#include <linux/lm_interface.h>
+#include <linux/fiemap.h>
#include <asm/uaccess.h>
#include "gfs2.h"
@@ -31,12 +32,11 @@
#include "glock.h"
#include "inode.h"
#include "meta_io.h"
-#include "ops_dentry.h"
-#include "ops_inode.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
#include "util.h"
+#include "super.h"
/**
* gfs2_create - Create a file
@@ -185,7 +185,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
if (!dip->i_inode.i_nlink)
goto out_gunlock;
error = -EFBIG;
- if (dip->i_di.di_entries == (u32)-1)
+ if (dip->i_entries == (u32)-1)
goto out_gunlock;
error = -EPERM;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
@@ -371,7 +371,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
ip = ghs[1].gh_gl->gl_object;
- ip->i_di.di_size = size;
+ ip->i_disksize = size;
error = gfs2_meta_inode_buffer(ip, &dibh);
@@ -425,9 +425,9 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
ip = ghs[1].gh_gl->gl_object;
ip->i_inode.i_nlink = 2;
- ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
- ip->i_di.di_flags |= GFS2_DIF_JDATA;
- ip->i_di.di_entries = 2;
+ ip->i_disksize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
+ ip->i_diskflags |= GFS2_DIF_JDATA;
+ ip->i_entries = 2;
error = gfs2_meta_inode_buffer(ip, &dibh);
@@ -517,13 +517,13 @@ static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
if (error)
goto out_gunlock;
- if (ip->i_di.di_entries < 2) {
+ if (ip->i_entries < 2) {
if (gfs2_consist_inode(ip))
gfs2_dinode_print(ip);
error = -EIO;
goto out_gunlock;
}
- if (ip->i_di.di_entries > 2) {
+ if (ip->i_entries > 2) {
error = -ENOTEMPTY;
goto out_gunlock;
}
@@ -726,13 +726,13 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
goto out_gunlock;
if (S_ISDIR(nip->i_inode.i_mode)) {
- if (nip->i_di.di_entries < 2) {
+ if (nip->i_entries < 2) {
if (gfs2_consist_inode(nip))
gfs2_dinode_print(nip);
error = -EIO;
goto out_gunlock;
}
- if (nip->i_di.di_entries > 2) {
+ if (nip->i_entries > 2) {
error = -ENOTEMPTY;
goto out_gunlock;
}
@@ -758,7 +758,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
error = -EINVAL;
goto out_gunlock;
}
- if (ndip->i_di.di_entries == (u32)-1) {
+ if (ndip->i_entries == (u32)-1) {
error = -EFBIG;
goto out_gunlock;
}
@@ -990,7 +990,7 @@ static int setattr_size(struct inode *inode, struct iattr *attr)
struct gfs2_sbd *sdp = GFS2_SB(inode);
int error;
- if (attr->ia_size != ip->i_di.di_size) {
+ if (attr->ia_size != ip->i_disksize) {
error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks);
if (error)
return error;
@@ -1001,8 +1001,8 @@ static int setattr_size(struct inode *inode, struct iattr *attr)
}
error = gfs2_truncatei(ip, attr->ia_size);
- if (error && (inode->i_size != ip->i_di.di_size))
- i_size_write(inode, ip->i_di.di_size);
+ if (error && (inode->i_size != ip->i_disksize))
+ i_size_write(inode, ip->i_disksize);
return error;
}
@@ -1212,6 +1212,48 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
}
+static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
+ u64 start, u64 len)
+{
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_holder gh;
+ int ret;
+
+ ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
+ if (ret)
+ return ret;
+
+ mutex_lock(&inode->i_mutex);
+
+ ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
+ if (ret)
+ goto out;
+
+ if (gfs2_is_stuffed(ip)) {
+ u64 phys = ip->i_no_addr << inode->i_blkbits;
+ u64 size = i_size_read(inode);
+ u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED|
+ FIEMAP_EXTENT_DATA_INLINE;
+ phys += sizeof(struct gfs2_dinode);
+ phys += start;
+ if (start + len > size)
+ len = size - start;
+ if (start < size)
+ ret = fiemap_fill_next_extent(fieinfo, start, phys,
+ len, flags);
+ if (ret == 1)
+ ret = 0;
+ } else {
+ ret = __generic_block_fiemap(inode, fieinfo, start, len,
+ gfs2_block_map);
+ }
+
+ gfs2_glock_dq_uninit(&gh);
+out:
+ mutex_unlock(&inode->i_mutex);
+ return ret;
+}
+
const struct inode_operations gfs2_file_iops = {
.permission = gfs2_permission,
.setattr = gfs2_setattr,
@@ -1220,6 +1262,7 @@ const struct inode_operations gfs2_file_iops = {
.getxattr = gfs2_getxattr,
.listxattr = gfs2_listxattr,
.removexattr = gfs2_removexattr,
+ .fiemap = gfs2_fiemap,
};
const struct inode_operations gfs2_dir_iops = {
@@ -1239,6 +1282,7 @@ const struct inode_operations gfs2_dir_iops = {
.getxattr = gfs2_getxattr,
.listxattr = gfs2_listxattr,
.removexattr = gfs2_removexattr,
+ .fiemap = gfs2_fiemap,
};
const struct inode_operations gfs2_symlink_iops = {
@@ -1251,5 +1295,6 @@ const struct inode_operations gfs2_symlink_iops = {
.getxattr = gfs2_getxattr,
.listxattr = gfs2_listxattr,
.removexattr = gfs2_removexattr,
+ .fiemap = gfs2_fiemap,
};
diff --git a/fs/gfs2/ops_inode.h b/fs/gfs2/ops_inode.h
deleted file mode 100644
index 14b4b797622..00000000000
--- a/fs/gfs2/ops_inode.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __OPS_INODE_DOT_H__
-#define __OPS_INODE_DOT_H__
-
-#include <linux/fs.h>
-
-extern const struct inode_operations gfs2_file_iops;
-extern const struct inode_operations gfs2_dir_iops;
-extern const struct inode_operations gfs2_symlink_iops;
-extern const struct file_operations gfs2_file_fops;
-extern const struct file_operations gfs2_dir_fops;
-extern const struct file_operations gfs2_file_fops_nolock;
-extern const struct file_operations gfs2_dir_fops_nolock;
-
-extern void gfs2_set_inode_flags(struct inode *inode);
-
-#endif /* __OPS_INODE_DOT_H__ */
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index d5355d9b592..777783deddc 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -28,7 +28,6 @@
#include "inode.h"
#include "log.h"
#include "mount.h"
-#include "ops_super.h"
#include "quota.h"
#include "recovery.h"
#include "rgrp.h"
@@ -143,8 +142,6 @@ static void gfs2_put_super(struct super_block *sb)
kthread_stop(sdp->sd_quotad_process);
kthread_stop(sdp->sd_logd_process);
kthread_stop(sdp->sd_recoverd_process);
- while (sdp->sd_glockd_num--)
- kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
if (!(sb->s_flags & MS_RDONLY)) {
error = gfs2_make_fs_ro(sdp);
@@ -185,7 +182,6 @@ static void gfs2_put_super(struct super_block *sb)
/* At this point, we're through participating in the lockspace */
gfs2_sys_fs_del(sdp);
- kfree(sdp);
}
/**
@@ -260,6 +256,137 @@ static void gfs2_unlockfs(struct super_block *sb)
}
/**
+ * statfs_fill - fill in the sg for a given RG
+ * @rgd: the RG
+ * @sc: the sc structure
+ *
+ * Returns: 0 on success, -ESTALE if the LVB is invalid
+ */
+
+static int statfs_slow_fill(struct gfs2_rgrpd *rgd,
+ struct gfs2_statfs_change_host *sc)
+{
+ gfs2_rgrp_verify(rgd);
+ sc->sc_total += rgd->rd_data;
+ sc->sc_free += rgd->rd_free;
+ sc->sc_dinodes += rgd->rd_dinodes;
+ return 0;
+}
+
+/**
+ * gfs2_statfs_slow - Stat a filesystem using asynchronous locking
+ * @sdp: the filesystem
+ * @sc: the sc info that will be returned
+ *
+ * Any error (other than a signal) will cause this routine to fall back
+ * to the synchronous version.
+ *
+ * FIXME: This really shouldn't busy wait like this.
+ *
+ * Returns: errno
+ */
+
+static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc)
+{
+ struct gfs2_holder ri_gh;
+ struct gfs2_rgrpd *rgd_next;
+ struct gfs2_holder *gha, *gh;
+ unsigned int slots = 64;
+ unsigned int x;
+ int done;
+ int error = 0, err;
+
+ memset(sc, 0, sizeof(struct gfs2_statfs_change_host));
+ gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL);
+ if (!gha)
+ return -ENOMEM;
+
+ error = gfs2_rindex_hold(sdp, &ri_gh);
+ if (error)
+ goto out;
+
+ rgd_next = gfs2_rgrpd_get_first(sdp);
+
+ for (;;) {
+ done = 1;
+
+ for (x = 0; x < slots; x++) {
+ gh = gha + x;
+
+ if (gh->gh_gl && gfs2_glock_poll(gh)) {
+ err = gfs2_glock_wait(gh);
+ if (err) {
+ gfs2_holder_uninit(gh);
+ error = err;
+ } else {
+ if (!error)
+ error = statfs_slow_fill(
+ gh->gh_gl->gl_object, sc);
+ gfs2_glock_dq_uninit(gh);
+ }
+ }
+
+ if (gh->gh_gl)
+ done = 0;
+ else if (rgd_next && !error) {
+ error = gfs2_glock_nq_init(rgd_next->rd_gl,
+ LM_ST_SHARED,
+ GL_ASYNC,
+ gh);
+ rgd_next = gfs2_rgrpd_get_next(rgd_next);
+ done = 0;
+ }
+
+ if (signal_pending(current))
+ error = -ERESTARTSYS;
+ }
+
+ if (done)
+ break;
+
+ yield();
+ }
+
+ gfs2_glock_dq_uninit(&ri_gh);
+
+out:
+ kfree(gha);
+ return error;
+}
+
+/**
+ * gfs2_statfs_i - Do a statfs
+ * @sdp: the filesystem
+ * @sg: the sg structure
+ *
+ * Returns: errno
+ */
+
+static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc)
+{
+ struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
+ struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
+
+ spin_lock(&sdp->sd_statfs_spin);
+
+ *sc = *m_sc;
+ sc->sc_total += l_sc->sc_total;
+ sc->sc_free += l_sc->sc_free;
+ sc->sc_dinodes += l_sc->sc_dinodes;
+
+ spin_unlock(&sdp->sd_statfs_spin);
+
+ if (sc->sc_free < 0)
+ sc->sc_free = 0;
+ if (sc->sc_free > sc->sc_total)
+ sc->sc_free = sc->sc_total;
+ if (sc->sc_dinodes < 0)
+ sc->sc_dinodes = 0;
+
+ return 0;
+}
+
+/**
* gfs2_statfs - Gather and return stats about the filesystem
* @sb: The superblock
* @statfsbuf: The buffer
@@ -370,7 +497,6 @@ static void gfs2_clear_inode(struct inode *inode)
*/
if (test_bit(GIF_USER, &ip->i_flags)) {
ip->i_gl->gl_object = NULL;
- gfs2_glock_schedule_for_reclaim(ip->i_gl);
gfs2_glock_put(ip->i_gl);
ip->i_gl = NULL;
if (ip->i_iopen_gh.gh_gl) {
@@ -423,8 +549,6 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
seq_printf(s, ",debug");
if (args->ar_upgrade)
seq_printf(s, ",upgrade");
- if (args->ar_num_glockd != GFS2_GLOCKD_DEFAULT)
- seq_printf(s, ",num_glockd=%u", args->ar_num_glockd);
if (args->ar_posix_acl)
seq_printf(s, ",acl");
if (args->ar_quota != GFS2_QUOTA_DEFAULT) {
@@ -494,16 +618,16 @@ static void gfs2_delete_inode(struct inode *inode)
gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh);
error = gfs2_glock_nq(&ip->i_iopen_gh);
if (error)
- goto out_uninit;
+ goto out_truncate;
if (S_ISDIR(inode->i_mode) &&
- (ip->i_di.di_flags & GFS2_DIF_EXHASH)) {
+ (ip->i_diskflags & GFS2_DIF_EXHASH)) {
error = gfs2_dir_exhash_dealloc(ip);
if (error)
goto out_unlock;
}
- if (ip->i_di.di_eattr) {
+ if (ip->i_eattr) {
error = gfs2_ea_dealloc(ip);
if (error)
goto out_unlock;
@@ -519,6 +643,7 @@ static void gfs2_delete_inode(struct inode *inode)
if (error)
goto out_unlock;
+out_truncate:
error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks);
if (error)
goto out_unlock;
@@ -527,8 +652,8 @@ static void gfs2_delete_inode(struct inode *inode)
gfs2_trans_end(sdp);
out_unlock:
- gfs2_glock_dq(&ip->i_iopen_gh);
-out_uninit:
+ if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags))
+ gfs2_glock_dq(&ip->i_iopen_gh);
gfs2_holder_uninit(&ip->i_iopen_gh);
gfs2_glock_dq_uninit(&gh);
if (error && error != GLR_TRYFAILED)
diff --git a/fs/gfs2/ops_super.h b/fs/gfs2/ops_super.h
deleted file mode 100644
index 442a274c627..00000000000
--- a/fs/gfs2/ops_super.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __OPS_SUPER_DOT_H__
-#define __OPS_SUPER_DOT_H__
-
-#include <linux/fs.h>
-
-extern const struct super_operations gfs2_super_ops;
-
-#endif /* __OPS_SUPER_DOT_H__ */
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 3e073f5144f..b08d09696b3 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -46,6 +46,8 @@
#include <linux/bio.h>
#include <linux/gfs2_ondisk.h>
#include <linux/lm_interface.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
#include "gfs2.h"
#include "incore.h"
@@ -94,7 +96,7 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
struct gfs2_quota_data *qd;
int error;
- qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_NOFS);
+ qd = kmem_cache_zalloc(gfs2_quotad_cachep, GFP_NOFS);
if (!qd)
return -ENOMEM;
@@ -119,7 +121,7 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
return 0;
fail:
- kfree(qd);
+ kmem_cache_free(gfs2_quotad_cachep, qd);
return error;
}
@@ -158,7 +160,7 @@ static int qd_get(struct gfs2_sbd *sdp, int user, u32 id, int create,
if (qd || !create) {
if (new_qd) {
gfs2_lvb_unhold(new_qd->qd_gl);
- kfree(new_qd);
+ kmem_cache_free(gfs2_quotad_cachep, new_qd);
}
*qdp = qd;
return 0;
@@ -1013,7 +1015,7 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), change))
return;
- if (ip->i_di.di_flags & GFS2_DIF_SYSTEM)
+ if (ip->i_diskflags & GFS2_DIF_SYSTEM)
return;
for (x = 0; x < al->al_qd_num; x++) {
@@ -1100,15 +1102,15 @@ static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *
int gfs2_quota_init(struct gfs2_sbd *sdp)
{
struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode);
- unsigned int blocks = ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift;
+ unsigned int blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift;
unsigned int x, slot = 0;
unsigned int found = 0;
u64 dblock;
u32 extlen = 0;
int error;
- if (!ip->i_di.di_size || ip->i_di.di_size > (64 << 20) ||
- ip->i_di.di_size & (sdp->sd_sb.sb_bsize - 1)) {
+ if (!ip->i_disksize || ip->i_disksize > (64 << 20) ||
+ ip->i_disksize & (sdp->sd_sb.sb_bsize - 1)) {
gfs2_consist_inode(ip);
return -EIO;
}
@@ -1195,7 +1197,7 @@ fail:
return error;
}
-void gfs2_quota_scan(struct gfs2_sbd *sdp)
+static void gfs2_quota_scan(struct gfs2_sbd *sdp)
{
struct gfs2_quota_data *qd, *safe;
LIST_HEAD(dead);
@@ -1222,7 +1224,7 @@ void gfs2_quota_scan(struct gfs2_sbd *sdp)
gfs2_assert_warn(sdp, !qd->qd_bh_count);
gfs2_lvb_unhold(qd->qd_gl);
- kfree(qd);
+ kmem_cache_free(gfs2_quotad_cachep, qd);
}
}
@@ -1257,7 +1259,7 @@ void gfs2_quota_cleanup(struct gfs2_sbd *sdp)
gfs2_assert_warn(sdp, !qd->qd_bh_count);
gfs2_lvb_unhold(qd->qd_gl);
- kfree(qd);
+ kmem_cache_free(gfs2_quotad_cachep, qd);
spin_lock(&sdp->sd_quota_spin);
}
@@ -1272,3 +1274,94 @@ void gfs2_quota_cleanup(struct gfs2_sbd *sdp)
}
}
+static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error)
+{
+ if (error == 0 || error == -EROFS)
+ return;
+ if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
+ fs_err(sdp, "gfs2_quotad: %s error %d\n", msg, error);
+}
+
+static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg,
+ int (*fxn)(struct gfs2_sbd *sdp),
+ unsigned long t, unsigned long *timeo,
+ unsigned int *new_timeo)
+{
+ if (t >= *timeo) {
+ int error = fxn(sdp);
+ quotad_error(sdp, msg, error);
+ *timeo = gfs2_tune_get_i(&sdp->sd_tune, new_timeo) * HZ;
+ } else {
+ *timeo -= t;
+ }
+}
+
+static void quotad_check_trunc_list(struct gfs2_sbd *sdp)
+{
+ struct gfs2_inode *ip;
+
+ while(1) {
+ ip = NULL;
+ spin_lock(&sdp->sd_trunc_lock);
+ if (!list_empty(&sdp->sd_trunc_list)) {
+ ip = list_entry(sdp->sd_trunc_list.next,
+ struct gfs2_inode, i_trunc_list);
+ list_del_init(&ip->i_trunc_list);
+ }
+ spin_unlock(&sdp->sd_trunc_lock);
+ if (ip == NULL)
+ return;
+ gfs2_glock_finish_truncate(ip);
+ }
+}
+
+/**
+ * gfs2_quotad - Write cached quota changes into the quota file
+ * @sdp: Pointer to GFS2 superblock
+ *
+ */
+
+int gfs2_quotad(void *data)
+{
+ struct gfs2_sbd *sdp = data;
+ struct gfs2_tune *tune = &sdp->sd_tune;
+ unsigned long statfs_timeo = 0;
+ unsigned long quotad_timeo = 0;
+ unsigned long t = 0;
+ DEFINE_WAIT(wait);
+ int empty;
+
+ while (!kthread_should_stop()) {
+
+ /* Update the master statfs file */
+ quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t,
+ &statfs_timeo, &tune->gt_statfs_quantum);
+
+ /* Update quota file */
+ quotad_check_timeo(sdp, "sync", gfs2_quota_sync, t,
+ &quotad_timeo, &tune->gt_quota_quantum);
+
+ /* FIXME: This should be turned into a shrinker */
+ gfs2_quota_scan(sdp);
+
+ /* Check for & recover partially truncated inodes */
+ quotad_check_trunc_list(sdp);
+
+ if (freezing(current))
+ refrigerator();
+ t = min(quotad_timeo, statfs_timeo);
+
+ prepare_to_wait(&sdp->sd_quota_wait, &wait, TASK_UNINTERRUPTIBLE);
+ spin_lock(&sdp->sd_trunc_lock);
+ empty = list_empty(&sdp->sd_trunc_list);
+ spin_unlock(&sdp->sd_trunc_lock);
+ if (empty)
+ t -= schedule_timeout(t);
+ else
+ t = 0;
+ finish_wait(&sdp->sd_quota_wait, &wait);
+ }
+
+ return 0;
+}
+
diff --git a/fs/gfs2/quota.h b/fs/gfs2/quota.h
index 3b7f4b0e5df..cec9032be97 100644
--- a/fs/gfs2/quota.h
+++ b/fs/gfs2/quota.h
@@ -15,22 +15,22 @@ struct gfs2_sbd;
#define NO_QUOTA_CHANGE ((u32)-1)
-int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
-void gfs2_quota_unhold(struct gfs2_inode *ip);
+extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
+extern void gfs2_quota_unhold(struct gfs2_inode *ip);
-int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
-void gfs2_quota_unlock(struct gfs2_inode *ip);
+extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
+extern void gfs2_quota_unlock(struct gfs2_inode *ip);
-int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
-void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
- u32 uid, u32 gid);
+extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
+extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
+ u32 uid, u32 gid);
-int gfs2_quota_sync(struct gfs2_sbd *sdp);
-int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
+extern int gfs2_quota_sync(struct gfs2_sbd *sdp);
+extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
-int gfs2_quota_init(struct gfs2_sbd *sdp);
-void gfs2_quota_scan(struct gfs2_sbd *sdp);
-void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
+extern int gfs2_quota_init(struct gfs2_sbd *sdp);
+extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
+extern int gfs2_quotad(void *data);
static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
{
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index d5e91f4f6a0..efd09c3d2b2 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -14,6 +14,8 @@
#include <linux/gfs2_ondisk.h>
#include <linux/crc32.h>
#include <linux/lm_interface.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
#include "gfs2.h"
#include "incore.h"
@@ -583,13 +585,35 @@ fail:
return error;
}
+static struct gfs2_jdesc *gfs2_jdesc_find_dirty(struct gfs2_sbd *sdp)
+{
+ struct gfs2_jdesc *jd;
+ int found = 0;
+
+ spin_lock(&sdp->sd_jindex_spin);
+
+ list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
+ if (jd->jd_dirty) {
+ jd->jd_dirty = 0;
+ found = 1;
+ break;
+ }
+ }
+ spin_unlock(&sdp->sd_jindex_spin);
+
+ if (!found)
+ jd = NULL;
+
+ return jd;
+}
+
/**
* gfs2_check_journals - Recover any dirty journals
* @sdp: the filesystem
*
*/
-void gfs2_check_journals(struct gfs2_sbd *sdp)
+static void gfs2_check_journals(struct gfs2_sbd *sdp)
{
struct gfs2_jdesc *jd;
@@ -603,3 +627,25 @@ void gfs2_check_journals(struct gfs2_sbd *sdp)
}
}
+/**
+ * gfs2_recoverd - Recover dead machine's journals
+ * @sdp: Pointer to GFS2 superblock
+ *
+ */
+
+int gfs2_recoverd(void *data)
+{
+ struct gfs2_sbd *sdp = data;
+ unsigned long t;
+
+ while (!kthread_should_stop()) {
+ gfs2_check_journals(sdp);
+ t = gfs2_tune_get(sdp, gt_recoverd_secs) * HZ;
+ if (freezing(current))
+ refrigerator();
+ schedule_timeout_interruptible(t);
+ }
+
+ return 0;
+}
+
diff --git a/fs/gfs2/recovery.h b/fs/gfs2/recovery.h
index f7235e61c72..a8218ea15b5 100644
--- a/fs/gfs2/recovery.h
+++ b/fs/gfs2/recovery.h
@@ -18,17 +18,17 @@ static inline void gfs2_replay_incr_blk(struct gfs2_sbd *sdp, unsigned int *blk)
*blk = 0;
}
-int gfs2_replay_read_block(struct gfs2_jdesc *jd, unsigned int blk,
+extern int gfs2_replay_read_block(struct gfs2_jdesc *jd, unsigned int blk,
struct buffer_head **bh);
-int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where);
-int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where);
-void gfs2_revoke_clean(struct gfs2_sbd *sdp);
+extern int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where);
+extern int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where);
+extern void gfs2_revoke_clean(struct gfs2_sbd *sdp);
-int gfs2_find_jhead(struct gfs2_jdesc *jd,
+extern int gfs2_find_jhead(struct gfs2_jdesc *jd,
struct gfs2_log_header_host *head);
-int gfs2_recover_journal(struct gfs2_jdesc *gfs2_jd);
-void gfs2_check_journals(struct gfs2_sbd *sdp);
+extern int gfs2_recover_journal(struct gfs2_jdesc *gfs2_jd);
+extern int gfs2_recoverd(void *data);
#endif /* __RECOVERY_DOT_H__ */
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 2d90fb25350..8b01c635d92 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -269,16 +269,14 @@ void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd)
bi->bi_len, x);
}
- if (count[0] != rgd->rd_rg.rg_free) {
+ if (count[0] != rgd->rd_free) {
if (gfs2_consist_rgrpd(rgd))
fs_err(sdp, "free data mismatch: %u != %u\n",
- count[0], rgd->rd_rg.rg_free);
+ count[0], rgd->rd_free);
return;
}
- tmp = rgd->rd_data -
- rgd->rd_rg.rg_free -
- rgd->rd_rg.rg_dinodes;
+ tmp = rgd->rd_data - rgd->rd_free - rgd->rd_dinodes;
if (count[1] + count[2] != tmp) {
if (gfs2_consist_rgrpd(rgd))
fs_err(sdp, "used data mismatch: %u != %u\n",
@@ -286,10 +284,10 @@ void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd)
return;
}
- if (count[3] != rgd->rd_rg.rg_dinodes) {
+ if (count[3] != rgd->rd_dinodes) {
if (gfs2_consist_rgrpd(rgd))
fs_err(sdp, "used metadata mismatch: %u != %u\n",
- count[3], rgd->rd_rg.rg_dinodes);
+ count[3], rgd->rd_dinodes);
return;
}
@@ -501,7 +499,7 @@ u64 gfs2_ri_total(struct gfs2_sbd *sdp)
for (rgrps = 0;; rgrps++) {
loff_t pos = rgrps * sizeof(struct gfs2_rindex);
- if (pos + sizeof(struct gfs2_rindex) >= ip->i_di.di_size)
+ if (pos + sizeof(struct gfs2_rindex) >= ip->i_disksize)
break;
error = gfs2_internal_read(ip, &ra_state, buf, &pos,
sizeof(struct gfs2_rindex));
@@ -590,7 +588,7 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct inode *inode = &ip->i_inode;
struct file_ra_state ra_state;
- u64 rgrp_count = ip->i_di.di_size;
+ u64 rgrp_count = ip->i_disksize;
int error;
if (do_div(rgrp_count, sizeof(struct gfs2_rindex))) {
@@ -634,7 +632,7 @@ static int gfs2_ri_update_special(struct gfs2_inode *ip)
for (sdp->sd_rgrps = 0;; sdp->sd_rgrps++) {
/* Ignore partials */
if ((sdp->sd_rgrps + 1) * sizeof(struct gfs2_rindex) >
- ip->i_di.di_size)
+ ip->i_disksize)
break;
error = read_rindex_entry(ip, &ra_state);
if (error) {
@@ -692,7 +690,6 @@ int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh)
static void gfs2_rgrp_in(struct gfs2_rgrpd *rgd, const void *buf)
{
const struct gfs2_rgrp *str = buf;
- struct gfs2_rgrp_host *rg = &rgd->rd_rg;
u32 rg_flags;
rg_flags = be32_to_cpu(str->rg_flags);
@@ -700,24 +697,23 @@ static void gfs2_rgrp_in(struct gfs2_rgrpd *rgd, const void *buf)
rgd->rd_flags |= GFS2_RDF_NOALLOC;
else
rgd->rd_flags &= ~GFS2_RDF_NOALLOC;
- rg->rg_free = be32_to_cpu(str->rg_free);
- rg->rg_dinodes = be32_to_cpu(str->rg_dinodes);
- rg->rg_igeneration = be64_to_cpu(str->rg_igeneration);
+ rgd->rd_free = be32_to_cpu(str->rg_free);
+ rgd->rd_dinodes = be32_to_cpu(str->rg_dinodes);
+ rgd->rd_igeneration = be64_to_cpu(str->rg_igeneration);
}
static void gfs2_rgrp_out(struct gfs2_rgrpd *rgd, void *buf)
{
struct gfs2_rgrp *str = buf;
- struct gfs2_rgrp_host *rg = &rgd->rd_rg;
u32 rg_flags = 0;
if (rgd->rd_flags & GFS2_RDF_NOALLOC)
rg_flags |= GFS2_RGF_NOALLOC;
str->rg_flags = cpu_to_be32(rg_flags);
- str->rg_free = cpu_to_be32(rg->rg_free);
- str->rg_dinodes = cpu_to_be32(rg->rg_dinodes);
+ str->rg_free = cpu_to_be32(rgd->rd_free);
+ str->rg_dinodes = cpu_to_be32(rgd->rd_dinodes);
str->__pad = cpu_to_be32(0);
- str->rg_igeneration = cpu_to_be64(rg->rg_igeneration);
+ str->rg_igeneration = cpu_to_be64(rgd->rd_igeneration);
memset(&str->rg_reserved, 0, sizeof(str->rg_reserved));
}
@@ -776,7 +772,7 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
}
spin_lock(&sdp->sd_rindex_spin);
- rgd->rd_free_clone = rgd->rd_rg.rg_free;
+ rgd->rd_free_clone = rgd->rd_free;
rgd->rd_bh_count++;
spin_unlock(&sdp->sd_rindex_spin);
@@ -850,7 +846,7 @@ void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd)
}
spin_lock(&sdp->sd_rindex_spin);
- rgd->rd_free_clone = rgd->rd_rg.rg_free;
+ rgd->rd_free_clone = rgd->rd_free;
spin_unlock(&sdp->sd_rindex_spin);
}
@@ -1403,8 +1399,8 @@ u64 gfs2_alloc_block(struct gfs2_inode *ip, unsigned int *n)
block = rgd->rd_data0 + blk;
ip->i_goal = block;
- gfs2_assert_withdraw(sdp, rgd->rd_rg.rg_free >= *n);
- rgd->rd_rg.rg_free -= *n;
+ gfs2_assert_withdraw(sdp, rgd->rd_free >= *n);
+ rgd->rd_free -= *n;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
@@ -1445,10 +1441,10 @@ u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
block = rgd->rd_data0 + blk;
- gfs2_assert_withdraw(sdp, rgd->rd_rg.rg_free);
- rgd->rd_rg.rg_free--;
- rgd->rd_rg.rg_dinodes++;
- *generation = rgd->rd_rg.rg_igeneration++;
+ gfs2_assert_withdraw(sdp, rgd->rd_free);
+ rgd->rd_free--;
+ rgd->rd_dinodes++;
+ *generation = rgd->rd_igeneration++;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
@@ -1481,7 +1477,7 @@ void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen)
if (!rgd)
return;
- rgd->rd_rg.rg_free += blen;
+ rgd->rd_free += blen;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
@@ -1509,7 +1505,7 @@ void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen)
if (!rgd)
return;
- rgd->rd_rg.rg_free += blen;
+ rgd->rd_free += blen;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
@@ -1546,10 +1542,10 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
return;
gfs2_assert_withdraw(sdp, rgd == tmp_rgd);
- if (!rgd->rd_rg.rg_dinodes)
+ if (!rgd->rd_dinodes)
gfs2_consist_rgrpd(rgd);
- rgd->rd_rg.rg_dinodes--;
- rgd->rd_rg.rg_free++;
+ rgd->rd_dinodes--;
+ rgd->rd_free++;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index c3ba3d9d0aa..141b781f2fc 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -34,76 +34,6 @@
#include "util.h"
/**
- * gfs2_jindex_hold - Grab a lock on the jindex
- * @sdp: The GFS2 superblock
- * @ji_gh: the holder for the jindex glock
- *
- * This is very similar to the gfs2_rindex_hold() function, except that
- * in general we hold the jindex lock for longer periods of time and
- * we grab it far less frequently (in general) then the rgrp lock.
- *
- * Returns: errno
- */
-
-int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
-{
- struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex);
- struct qstr name;
- char buf[20];
- struct gfs2_jdesc *jd;
- int error;
-
- name.name = buf;
-
- mutex_lock(&sdp->sd_jindex_mutex);
-
- for (;;) {
- error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
- if (error)
- break;
-
- name.len = sprintf(buf, "journal%u", sdp->sd_journals);
- name.hash = gfs2_disk_hash(name.name, name.len);
-
- error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
- if (error == -ENOENT) {
- error = 0;
- break;
- }
-
- gfs2_glock_dq_uninit(ji_gh);
-
- if (error)
- break;
-
- error = -ENOMEM;
- jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL);
- if (!jd)
- break;
-
- INIT_LIST_HEAD(&jd->extent_list);
- jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
- if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
- if (!jd->jd_inode)
- error = -ENOENT;
- else
- error = PTR_ERR(jd->jd_inode);
- kfree(jd);
- break;
- }
-
- spin_lock(&sdp->sd_jindex_spin);
- jd->jd_jid = sdp->sd_journals++;
- list_add_tail(&jd->jd_list, &sdp->sd_jindex_list);
- spin_unlock(&sdp->sd_jindex_spin);
- }
-
- mutex_unlock(&sdp->sd_jindex_mutex);
-
- return error;
-}
-
-/**
* gfs2_jindex_free - Clear all the journal index information
* @sdp: The GFS2 superblock
*
@@ -166,39 +96,6 @@ struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid)
return jd;
}
-void gfs2_jdesc_make_dirty(struct gfs2_sbd *sdp, unsigned int jid)
-{
- struct gfs2_jdesc *jd;
-
- spin_lock(&sdp->sd_jindex_spin);
- jd = jdesc_find_i(&sdp->sd_jindex_list, jid);
- if (jd)
- jd->jd_dirty = 1;
- spin_unlock(&sdp->sd_jindex_spin);
-}
-
-struct gfs2_jdesc *gfs2_jdesc_find_dirty(struct gfs2_sbd *sdp)
-{
- struct gfs2_jdesc *jd;
- int found = 0;
-
- spin_lock(&sdp->sd_jindex_spin);
-
- list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
- if (jd->jd_dirty) {
- jd->jd_dirty = 0;
- found = 1;
- break;
- }
- }
- spin_unlock(&sdp->sd_jindex_spin);
-
- if (!found)
- jd = NULL;
-
- return jd;
-}
-
int gfs2_jdesc_check(struct gfs2_jdesc *jd)
{
struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
@@ -206,14 +103,14 @@ int gfs2_jdesc_check(struct gfs2_jdesc *jd)
int ar;
int error;
- if (ip->i_di.di_size < (8 << 20) || ip->i_di.di_size > (1 << 30) ||
- (ip->i_di.di_size & (sdp->sd_sb.sb_bsize - 1))) {
+ if (ip->i_disksize < (8 << 20) || ip->i_disksize > (1 << 30) ||
+ (ip->i_disksize & (sdp->sd_sb.sb_bsize - 1))) {
gfs2_consist_inode(ip);
return -EIO;
}
- jd->jd_blocks = ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift;
+ jd->jd_blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift;
- error = gfs2_write_alloc_required(ip, 0, ip->i_di.di_size, &ar);
+ error = gfs2_write_alloc_required(ip, 0, ip->i_disksize, &ar);
if (!error && ar) {
gfs2_consist_inode(ip);
error = -EIO;
@@ -423,137 +320,6 @@ out:
return error;
}
-/**
- * gfs2_statfs_i - Do a statfs
- * @sdp: the filesystem
- * @sg: the sg structure
- *
- * Returns: errno
- */
-
-int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc)
-{
- struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
- struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
-
- spin_lock(&sdp->sd_statfs_spin);
-
- *sc = *m_sc;
- sc->sc_total += l_sc->sc_total;
- sc->sc_free += l_sc->sc_free;
- sc->sc_dinodes += l_sc->sc_dinodes;
-
- spin_unlock(&sdp->sd_statfs_spin);
-
- if (sc->sc_free < 0)
- sc->sc_free = 0;
- if (sc->sc_free > sc->sc_total)
- sc->sc_free = sc->sc_total;
- if (sc->sc_dinodes < 0)
- sc->sc_dinodes = 0;
-
- return 0;
-}
-
-/**
- * statfs_fill - fill in the sg for a given RG
- * @rgd: the RG
- * @sc: the sc structure
- *
- * Returns: 0 on success, -ESTALE if the LVB is invalid
- */
-
-static int statfs_slow_fill(struct gfs2_rgrpd *rgd,
- struct gfs2_statfs_change_host *sc)
-{
- gfs2_rgrp_verify(rgd);
- sc->sc_total += rgd->rd_data;
- sc->sc_free += rgd->rd_rg.rg_free;
- sc->sc_dinodes += rgd->rd_rg.rg_dinodes;
- return 0;
-}
-
-/**
- * gfs2_statfs_slow - Stat a filesystem using asynchronous locking
- * @sdp: the filesystem
- * @sc: the sc info that will be returned
- *
- * Any error (other than a signal) will cause this routine to fall back
- * to the synchronous version.
- *
- * FIXME: This really shouldn't busy wait like this.
- *
- * Returns: errno
- */
-
-int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc)
-{
- struct gfs2_holder ri_gh;
- struct gfs2_rgrpd *rgd_next;
- struct gfs2_holder *gha, *gh;
- unsigned int slots = 64;
- unsigned int x;
- int done;
- int error = 0, err;
-
- memset(sc, 0, sizeof(struct gfs2_statfs_change_host));
- gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL);
- if (!gha)
- return -ENOMEM;
-
- error = gfs2_rindex_hold(sdp, &ri_gh);
- if (error)
- goto out;
-
- rgd_next = gfs2_rgrpd_get_first(sdp);
-
- for (;;) {
- done = 1;
-
- for (x = 0; x < slots; x++) {
- gh = gha + x;
-
- if (gh->gh_gl && gfs2_glock_poll(gh)) {
- err = gfs2_glock_wait(gh);
- if (err) {
- gfs2_holder_uninit(gh);
- error = err;
- } else {
- if (!error)
- error = statfs_slow_fill(
- gh->gh_gl->gl_object, sc);
- gfs2_glock_dq_uninit(gh);
- }
- }
-
- if (gh->gh_gl)
- done = 0;
- else if (rgd_next && !error) {
- error = gfs2_glock_nq_init(rgd_next->rd_gl,
- LM_ST_SHARED,
- GL_ASYNC,
- gh);
- rgd_next = gfs2_rgrpd_get_next(rgd_next);
- done = 0;
- }
-
- if (signal_pending(current))
- error = -ERESTARTSYS;
- }
-
- if (done)
- break;
-
- yield();
- }
-
- gfs2_glock_dq_uninit(&ri_gh);
-
-out:
- kfree(gha);
- return error;
-}
-
struct lfcc {
struct list_head list;
struct gfs2_holder gh;
@@ -580,10 +346,6 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
struct gfs2_log_header_host lh;
int error;
- error = gfs2_jindex_hold(sdp, &ji_gh);
- if (error)
- return error;
-
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL);
if (!lfcc) {
diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h
index 50a4c9b1215..f6b8b00ad88 100644
--- a/fs/gfs2/super.h
+++ b/fs/gfs2/super.h
@@ -10,6 +10,8 @@
#ifndef __SUPER_DOT_H__
#define __SUPER_DOT_H__
+#include <linux/fs.h>
+#include <linux/dcache.h>
#include "incore.h"
void gfs2_lm_unmount(struct gfs2_sbd *sdp);
@@ -23,12 +25,9 @@ static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
return x;
}
-int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh);
void gfs2_jindex_free(struct gfs2_sbd *sdp);
struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid);
-void gfs2_jdesc_make_dirty(struct gfs2_sbd *sdp, unsigned int jid);
-struct gfs2_jdesc *gfs2_jdesc_find_dirty(struct gfs2_sbd *sdp);
int gfs2_jdesc_check(struct gfs2_jdesc *jd);
int gfs2_lookup_in_master_dir(struct gfs2_sbd *sdp, char *filename,
@@ -40,11 +39,15 @@ int gfs2_statfs_init(struct gfs2_sbd *sdp);
void gfs2_statfs_change(struct gfs2_sbd *sdp,
s64 total, s64 free, s64 dinodes);
int gfs2_statfs_sync(struct gfs2_sbd *sdp);
-int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc);
-int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc);
int gfs2_freeze_fs(struct gfs2_sbd *sdp);
void gfs2_unfreeze_fs(struct gfs2_sbd *sdp);
+extern struct file_system_type gfs2_fs_type;
+extern struct file_system_type gfs2meta_fs_type;
+extern const struct export_operations gfs2_export_ops;
+extern const struct super_operations gfs2_super_ops;
+extern struct dentry_operations gfs2_dops;
+
#endif /* __SUPER_DOT_H__ */
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 7e1879f1a02..26c1fa777a9 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -26,9 +26,6 @@
#include "quota.h"
#include "util.h"
-char *gfs2_sys_margs;
-spinlock_t gfs2_sys_margs_lock;
-
static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%u:%u\n",
@@ -263,7 +260,6 @@ ARGS_ATTR(localcaching, "%d\n");
ARGS_ATTR(localflocks, "%d\n");
ARGS_ATTR(debug, "%d\n");
ARGS_ATTR(upgrade, "%d\n");
-ARGS_ATTR(num_glockd, "%u\n");
ARGS_ATTR(posix_acl, "%d\n");
ARGS_ATTR(quota, "%u\n");
ARGS_ATTR(suiddir, "%d\n");
@@ -279,7 +275,6 @@ static struct attribute *args_attrs[] = {
&args_attr_localflocks.attr,
&args_attr_debug.attr,
&args_attr_upgrade.attr,
- &args_attr_num_glockd.attr,
&args_attr_posix_acl.attr,
&args_attr_quota.attr,
&args_attr_suiddir.attr,
@@ -288,30 +283,6 @@ static struct attribute *args_attrs[] = {
};
/*
- * display counters from superblock
- */
-
-struct counters_attr {
- struct attribute attr;
- ssize_t (*show)(struct gfs2_sbd *, char *);
-};
-
-#define COUNTERS_ATTR(name, fmt) \
-static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
-{ \
- return snprintf(buf, PAGE_SIZE, fmt, \
- (unsigned int)atomic_read(&sdp->sd_##name)); \
-} \
-static struct counters_attr counters_attr_##name = __ATTR_RO(name)
-
-COUNTERS_ATTR(reclaimed, "%u\n");
-
-static struct attribute *counters_attrs[] = {
- &counters_attr_reclaimed.attr,
- NULL,
-};
-
-/*
* get and set struct gfs2_tune fields
*/
@@ -393,7 +364,6 @@ static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
} \
TUNE_ATTR_2(name, name##_store)
-TUNE_ATTR(demote_secs, 0);
TUNE_ATTR(incore_log_blocks, 0);
TUNE_ATTR(log_flush_secs, 0);
TUNE_ATTR(quota_warn_period, 0);
@@ -408,11 +378,9 @@ TUNE_ATTR(stall_secs, 1);
TUNE_ATTR(statfs_quantum, 1);
TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process);
TUNE_ATTR_DAEMON(logd_secs, logd_process);
-TUNE_ATTR_DAEMON(quotad_secs, quotad_process);
TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
static struct attribute *tune_attrs[] = {
- &tune_attr_demote_secs.attr,
&tune_attr_incore_log_blocks.attr,
&tune_attr_log_flush_secs.attr,
&tune_attr_quota_warn_period.attr,
@@ -426,7 +394,6 @@ static struct attribute *tune_attrs[] = {
&tune_attr_statfs_quantum.attr,
&tune_attr_recoverd_secs.attr,
&tune_attr_logd_secs.attr,
- &tune_attr_quotad_secs.attr,
&tune_attr_quota_scale.attr,
&tune_attr_new_files_jdata.attr,
NULL,
@@ -437,11 +404,6 @@ static struct attribute_group lockstruct_group = {
.attrs = lockstruct_attrs,
};
-static struct attribute_group counters_group = {
- .name = "counters",
- .attrs = counters_attrs,
-};
-
static struct attribute_group args_group = {
.name = "args",
.attrs = args_attrs,
@@ -466,13 +428,9 @@ int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
if (error)
goto fail_reg;
- error = sysfs_create_group(&sdp->sd_kobj, &counters_group);
- if (error)
- goto fail_lockstruct;
-
error = sysfs_create_group(&sdp->sd_kobj, &args_group);
if (error)
- goto fail_counters;
+ goto fail_lockstruct;
error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
if (error)
@@ -483,8 +441,6 @@ int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
fail_args:
sysfs_remove_group(&sdp->sd_kobj, &args_group);
-fail_counters:
- sysfs_remove_group(&sdp->sd_kobj, &counters_group);
fail_lockstruct:
sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group);
fail_reg:
@@ -498,16 +454,27 @@ void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
{
sysfs_remove_group(&sdp->sd_kobj, &tune_group);
sysfs_remove_group(&sdp->sd_kobj, &args_group);
- sysfs_remove_group(&sdp->sd_kobj, &counters_group);
sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group);
kobject_put(&sdp->sd_kobj);
}
+static int gfs2_uevent(struct kset *kset, struct kobject *kobj,
+ struct kobj_uevent_env *env)
+{
+ struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
+ add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
+ add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
+ return 0;
+}
+
+static struct kset_uevent_ops gfs2_uevent_ops = {
+ .uevent = gfs2_uevent,
+};
+
+
int gfs2_sys_init(void)
{
- gfs2_sys_margs = NULL;
- spin_lock_init(&gfs2_sys_margs_lock);
- gfs2_kset = kset_create_and_add("gfs2", NULL, fs_kobj);
+ gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj);
if (!gfs2_kset)
return -ENOMEM;
return 0;
@@ -515,7 +482,6 @@ int gfs2_sys_init(void)
void gfs2_sys_uninit(void)
{
- kfree(gfs2_sys_margs);
kset_unregister(gfs2_kset);
}
diff --git a/fs/gfs2/sys.h b/fs/gfs2/sys.h
index 1ca8cdac530..e94560e836d 100644
--- a/fs/gfs2/sys.h
+++ b/fs/gfs2/sys.h
@@ -13,10 +13,6 @@
#include <linux/spinlock.h>
struct gfs2_sbd;
-/* Allow args to be passed to GFS2 when using an initial ram disk */
-extern char *gfs2_sys_margs;
-extern spinlock_t gfs2_sys_margs_lock;
-
int gfs2_sys_fs_add(struct gfs2_sbd *sdp);
void gfs2_sys_fs_del(struct gfs2_sbd *sdp);
diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c
index d31e355c61f..374f50e9549 100644
--- a/fs/gfs2/util.c
+++ b/fs/gfs2/util.c
@@ -25,6 +25,7 @@ struct kmem_cache *gfs2_glock_cachep __read_mostly;
struct kmem_cache *gfs2_inode_cachep __read_mostly;
struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
+struct kmem_cache *gfs2_quotad_cachep __read_mostly;
void gfs2_assert_i(struct gfs2_sbd *sdp)
{
diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
index 7f48576289c..33e96b0ce9a 100644
--- a/fs/gfs2/util.h
+++ b/fs/gfs2/util.h
@@ -148,6 +148,7 @@ extern struct kmem_cache *gfs2_glock_cachep;
extern struct kmem_cache *gfs2_inode_cachep;
extern struct kmem_cache *gfs2_bufdata_cachep;
extern struct kmem_cache *gfs2_rgrpd_cachep;
+extern struct kmem_cache *gfs2_quotad_cachep;
static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
unsigned int *p)
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 7d479ce3ace..6903d37af03 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -252,6 +252,7 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
for (;;) {
struct page *page;
unsigned long nr, ret;
+ int ra;
/* nr is the maximum number of bytes to copy from this page */
nr = huge_page_size(h);
@@ -274,16 +275,19 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf,
*/
ret = len < nr ? len : nr;
if (clear_user(buf, ret))
- ret = -EFAULT;
+ ra = -EFAULT;
+ else
+ ra = 0;
} else {
/*
* We have the page, copy it to user space buffer.
*/
- ret = hugetlbfs_read_actor(page, offset, buf, len, nr);
+ ra = hugetlbfs_read_actor(page, offset, buf, len, nr);
+ ret = ra;
}
- if (ret < 0) {
+ if (ra < 0) {
if (retval == 0)
- retval = ret;
+ retval = ra;
if (page)
page_cache_release(page);
goto out;
@@ -506,7 +510,6 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, uid_t uid,
inode->i_mode = mode;
inode->i_uid = uid;
inode->i_gid = gid;
- inode->i_blocks = 0;
inode->i_mapping->a_ops = &hugetlbfs_aops;
inode->i_mapping->backing_dev_info =&hugetlbfs_backing_dev_info;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
diff --git a/fs/inode.c b/fs/inode.c
index 7de1cda9248..0013ac1af8e 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -22,6 +22,7 @@
#include <linux/bootmem.h>
#include <linux/inotify.h>
#include <linux/mount.h>
+#include <linux/async.h>
/*
* This is needed for the following functions:
@@ -110,8 +111,8 @@ static void wake_up_inode(struct inode *inode)
/**
* inode_init_always - perform inode structure intialisation
- * @sb - superblock inode belongs to.
- * @inode - inode to initialise
+ * @sb: superblock inode belongs to
+ * @inode: inode to initialise
*
* These are initializations that need to be done on every inode
* allocation as the fields are not initialised by slab allocation.
@@ -131,6 +132,8 @@ struct inode *inode_init_always(struct super_block *sb, struct inode *inode)
inode->i_op = &empty_iops;
inode->i_fop = &empty_fops;
inode->i_nlink = 1;
+ inode->i_uid = 0;
+ inode->i_gid = 0;
atomic_set(&inode->i_writecount, 0);
inode->i_size = 0;
inode->i_blocks = 0;
@@ -164,7 +167,7 @@ struct inode *inode_init_always(struct super_block *sb, struct inode *inode)
mapping->a_ops = &empty_aops;
mapping->host = inode;
mapping->flags = 0;
- mapping_set_gfp_mask(mapping, GFP_HIGHUSER_PAGECACHE);
+ mapping_set_gfp_mask(mapping, GFP_HIGHUSER_MOVABLE);
mapping->assoc_mapping = NULL;
mapping->backing_dev_info = &default_backing_dev_info;
mapping->writeback_index = 0;
@@ -574,8 +577,8 @@ __inode_add_to_lists(struct super_block *sb, struct hlist_head *head,
/**
* inode_add_to_lists - add a new inode to relevant lists
- * @sb - superblock inode belongs to.
- * @inode - inode to mark in use
+ * @sb: superblock inode belongs to
+ * @inode: inode to mark in use
*
* When an inode is allocated it needs to be accounted for, added to the in use
* list, the owning superblock and the inode hash. This needs to be done under
@@ -599,7 +602,7 @@ EXPORT_SYMBOL_GPL(inode_add_to_lists);
* @sb: superblock
*
* Allocates a new inode for given superblock. The default gfp_mask
- * for allocations related to inode->i_mapping is GFP_HIGHUSER_PAGECACHE.
+ * for allocations related to inode->i_mapping is GFP_HIGHUSER_MOVABLE.
* If HIGHMEM pages are unsuitable or it is known that pages allocated
* for the page cache are not reclaimable or migratable,
* mapping_set_gfp_mask() must be called with suitable flags on the
@@ -1136,16 +1139,11 @@ EXPORT_SYMBOL(remove_inode_hash);
* I_FREEING is set so that no-one will take a new reference to the inode while
* it is being deleted.
*/
-void generic_delete_inode(struct inode *inode)
+static void generic_delete_inode_async(void *data, async_cookie_t cookie)
{
+ struct inode *inode = data;
const struct super_operations *op = inode->i_sb->s_op;
- list_del_init(&inode->i_list);
- list_del_init(&inode->i_sb_list);
- inode->i_state |= I_FREEING;
- inodes_stat.nr_inodes--;
- spin_unlock(&inode_lock);
-
security_inode_delete(inode);
if (op->delete_inode) {
@@ -1169,6 +1167,16 @@ void generic_delete_inode(struct inode *inode)
destroy_inode(inode);
}
+void generic_delete_inode(struct inode *inode)
+{
+ list_del_init(&inode->i_list);
+ list_del_init(&inode->i_sb_list);
+ inode->i_state |= I_FREEING;
+ inodes_stat.nr_inodes--;
+ spin_unlock(&inode_lock);
+ async_schedule_special(generic_delete_inode_async, inode, &inode->i_sb->s_async_list);
+}
+
EXPORT_SYMBOL(generic_delete_inode);
static void generic_forget_inode(struct inode *inode)
diff --git a/fs/ioctl.c b/fs/ioctl.c
index 43e8b2c0664..cc3f1aa1cf7 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -231,7 +231,8 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
#define blk_to_logical(inode, blk) (blk << (inode)->i_blkbits)
#define logical_to_blk(inode, offset) (offset >> (inode)->i_blkbits);
-/*
+/**
+ * __generic_block_fiemap - FIEMAP for block based inodes (no locking)
* @inode - the inode to map
* @arg - the pointer to userspace where we copy everything to
* @get_block - the fs's get_block function
@@ -242,11 +243,15 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
*
* If it is possible to have data blocks beyond a hole past @inode->i_size, then
* please do not use this function, it will stop at the first unmapped block
- * beyond i_size
+ * beyond i_size.
+ *
+ * If you use this function directly, you need to do your own locking. Use
+ * generic_block_fiemap if you want the locking done for you.
*/
-int generic_block_fiemap(struct inode *inode,
- struct fiemap_extent_info *fieinfo, u64 start,
- u64 len, get_block_t *get_block)
+
+int __generic_block_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo, u64 start,
+ u64 len, get_block_t *get_block)
{
struct buffer_head tmp;
unsigned int start_blk;
@@ -260,9 +265,6 @@ int generic_block_fiemap(struct inode *inode,
start_blk = logical_to_blk(inode, start);
- /* guard against change */
- mutex_lock(&inode->i_mutex);
-
length = (long long)min_t(u64, len, i_size_read(inode));
map_len = length;
@@ -334,14 +336,36 @@ int generic_block_fiemap(struct inode *inode,
cond_resched();
} while (1);
- mutex_unlock(&inode->i_mutex);
-
/* if ret is 1 then we just hit the end of the extent array */
if (ret == 1)
ret = 0;
return ret;
}
+EXPORT_SYMBOL(__generic_block_fiemap);
+
+/**
+ * generic_block_fiemap - FIEMAP for block based inodes
+ * @inode: The inode to map
+ * @fieinfo: The mapping information
+ * @start: The initial block to map
+ * @len: The length of the extect to attempt to map
+ * @get_block: The block mapping function for the fs
+ *
+ * Calls __generic_block_fiemap to map the inode, after taking
+ * the inode's mutex lock.
+ */
+
+int generic_block_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo, u64 start,
+ u64 len, get_block_t *get_block)
+{
+ int ret;
+ mutex_lock(&inode->i_mutex);
+ ret = __generic_block_fiemap(inode, fieinfo, start, len, get_block);
+ mutex_unlock(&inode->i_mutex);
+ return ret;
+}
EXPORT_SYMBOL(generic_block_fiemap);
#endif /* CONFIG_BLOCK */
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 3f8af0f1505..6147ec3643a 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -855,10 +855,6 @@ root_found:
}
sbi->s_joliet_level = joliet_level;
- /* check the root inode */
- if (!inode->i_op)
- goto out_bad_root;
-
/* Make sure the root inode is a directory */
if (!S_ISDIR(inode->i_mode)) {
printk(KERN_WARNING
@@ -886,8 +882,6 @@ root_found:
/*
* Display error messages and free resources.
*/
-out_bad_root:
- printk(KERN_WARNING "%s: root inode not initialized\n", __func__);
out_iput:
iput(inode);
goto out_no_inode;
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 25719d902c5..3fbffb1ea71 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -306,6 +306,8 @@ void journal_commit_transaction(journal_t *journal)
int flags;
int err;
unsigned long blocknr;
+ ktime_t start_time;
+ u64 commit_time;
char *tagp = NULL;
journal_header_t *header;
journal_block_tag_t *tag = NULL;
@@ -418,6 +420,7 @@ void journal_commit_transaction(journal_t *journal)
commit_transaction->t_state = T_FLUSH;
journal->j_committing_transaction = commit_transaction;
journal->j_running_transaction = NULL;
+ start_time = ktime_get();
commit_transaction->t_log_start = journal->j_head;
wake_up(&journal->j_wait_transaction_locked);
spin_unlock(&journal->j_state_lock);
@@ -913,6 +916,18 @@ restart_loop:
J_ASSERT(commit_transaction == journal->j_committing_transaction);
journal->j_commit_sequence = commit_transaction->t_tid;
journal->j_committing_transaction = NULL;
+ commit_time = ktime_to_ns(ktime_sub(ktime_get(), start_time));
+
+ /*
+ * weight the commit time higher than the average time so we don't
+ * react too strongly to vast changes in commit time
+ */
+ if (likely(journal->j_average_commit_time))
+ journal->j_average_commit_time = (commit_time*3 +
+ journal->j_average_commit_time) / 4;
+ else
+ journal->j_average_commit_time = commit_time;
+
spin_unlock(&journal->j_state_lock);
if (commit_transaction->t_checkpoint_list == NULL &&
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index 60d4c32c880..e6a11743127 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -25,6 +25,7 @@
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/highmem.h>
+#include <linux/hrtimer.h>
static void __journal_temp_unlink_buffer(struct journal_head *jh);
@@ -49,6 +50,7 @@ get_transaction(journal_t *journal, transaction_t *transaction)
{
transaction->t_journal = journal;
transaction->t_state = T_RUNNING;
+ transaction->t_start_time = ktime_get();
transaction->t_tid = journal->j_transaction_sequence++;
transaction->t_expires = jiffies + journal->j_commit_interval;
spin_lock_init(&transaction->t_handle_lock);
@@ -752,7 +754,6 @@ out:
* int journal_get_write_access() - notify intent to modify a buffer for metadata (not data) update.
* @handle: transaction to add buffer modifications to
* @bh: bh to be used for metadata writes
- * @credits: variable that will receive credits for the buffer
*
* Returns an error code or 0 on success.
*
@@ -1370,7 +1371,7 @@ int journal_stop(handle_t *handle)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal = transaction->t_journal;
- int old_handle_count, err;
+ int err;
pid_t pid;
J_ASSERT(journal_current_handle() == handle);
@@ -1399,6 +1400,17 @@ int journal_stop(handle_t *handle)
* on IO anyway. Speeds up many-threaded, many-dir operations
* by 30x or more...
*
+ * We try and optimize the sleep time against what the underlying disk
+ * can do, instead of having a static sleep time. This is usefull for
+ * the case where our storage is so fast that it is more optimal to go
+ * ahead and force a flush and wait for the transaction to be committed
+ * than it is to wait for an arbitrary amount of time for new writers to
+ * join the transaction. We acheive this by measuring how long it takes
+ * to commit a transaction, and compare it with how long this
+ * transaction has been running, and if run time < commit time then we
+ * sleep for the delta and commit. This greatly helps super fast disks
+ * that would see slowdowns as more threads started doing fsyncs.
+ *
* But don't do this if this process was the most recent one to
* perform a synchronous write. We do this to detect the case where a
* single process is doing a stream of sync writes. No point in waiting
@@ -1406,11 +1418,26 @@ int journal_stop(handle_t *handle)
*/
pid = current->pid;
if (handle->h_sync && journal->j_last_sync_writer != pid) {
+ u64 commit_time, trans_time;
+
journal->j_last_sync_writer = pid;
- do {
- old_handle_count = transaction->t_handle_count;
- schedule_timeout_uninterruptible(1);
- } while (old_handle_count != transaction->t_handle_count);
+
+ spin_lock(&journal->j_state_lock);
+ commit_time = journal->j_average_commit_time;
+ spin_unlock(&journal->j_state_lock);
+
+ trans_time = ktime_to_ns(ktime_sub(ktime_get(),
+ transaction->t_start_time));
+
+ commit_time = min_t(u64, commit_time,
+ 1000*jiffies_to_usecs(1));
+
+ if (trans_time < commit_time) {
+ ktime_t expires = ktime_add_ns(ktime_get(),
+ commit_time);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_hrtimeout(&expires, HRTIMER_MODE_ABS);
+ }
}
current->journal_info = NULL;
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 073124a29b8..62804e57a44 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -535,6 +535,10 @@ void jbd2_journal_commit_transaction(journal_t *journal)
if (is_journal_aborted(journal)) {
clear_buffer_jbddirty(jh2bh(jh));
JBUFFER_TRACE(jh, "journal is aborting: refile");
+ jbd2_buffer_abort_trigger(jh,
+ jh->b_frozen_data ?
+ jh->b_frozen_triggers :
+ jh->b_triggers);
jbd2_journal_refile_buffer(journal, jh);
/* If that was the last one, we need to clean up
* any descriptor buffers which may have been
@@ -870,6 +874,9 @@ restart_loop:
* data.
*
* Otherwise, we can just throw away the frozen data now.
+ *
+ * We also know that the frozen data has already fired
+ * its triggers if they exist, so we can clear that too.
*/
if (jh->b_committed_data) {
jbd2_free(jh->b_committed_data, bh->b_size);
@@ -877,10 +884,12 @@ restart_loop:
if (jh->b_frozen_data) {
jh->b_committed_data = jh->b_frozen_data;
jh->b_frozen_data = NULL;
+ jh->b_frozen_triggers = NULL;
}
} else if (jh->b_frozen_data) {
jbd2_free(jh->b_frozen_data, bh->b_size);
jh->b_frozen_data = NULL;
+ jh->b_frozen_triggers = NULL;
}
spin_lock(&journal->j_list_lock);
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 2932c8f5519..56675306ed8 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -51,6 +51,7 @@ EXPORT_SYMBOL(jbd2_journal_unlock_updates);
EXPORT_SYMBOL(jbd2_journal_get_write_access);
EXPORT_SYMBOL(jbd2_journal_get_create_access);
EXPORT_SYMBOL(jbd2_journal_get_undo_access);
+EXPORT_SYMBOL(jbd2_journal_set_triggers);
EXPORT_SYMBOL(jbd2_journal_dirty_metadata);
EXPORT_SYMBOL(jbd2_journal_release_buffer);
EXPORT_SYMBOL(jbd2_journal_forget);
@@ -291,6 +292,7 @@ int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
struct page *new_page;
unsigned int new_offset;
struct buffer_head *bh_in = jh2bh(jh_in);
+ struct jbd2_buffer_trigger_type *triggers;
/*
* The buffer really shouldn't be locked: only the current committing
@@ -315,13 +317,23 @@ repeat:
done_copy_out = 1;
new_page = virt_to_page(jh_in->b_frozen_data);
new_offset = offset_in_page(jh_in->b_frozen_data);
+ triggers = jh_in->b_frozen_triggers;
} else {
new_page = jh2bh(jh_in)->b_page;
new_offset = offset_in_page(jh2bh(jh_in)->b_data);
+ triggers = jh_in->b_triggers;
}
mapped_data = kmap_atomic(new_page, KM_USER0);
/*
+ * Fire any commit trigger. Do this before checking for escaping,
+ * as the trigger may modify the magic offset. If a copy-out
+ * happens afterwards, it will have the correct data in the buffer.
+ */
+ jbd2_buffer_commit_trigger(jh_in, mapped_data + new_offset,
+ triggers);
+
+ /*
* Check for escaping
*/
if (*((__be32 *)(mapped_data + new_offset)) ==
@@ -353,6 +365,13 @@ repeat:
new_page = virt_to_page(tmp);
new_offset = offset_in_page(tmp);
done_copy_out = 1;
+
+ /*
+ * This isn't strictly necessary, as we're using frozen
+ * data for the escaping, but it keeps consistency with
+ * b_frozen_data usage.
+ */
+ jh_in->b_frozen_triggers = jh_in->b_triggers;
}
/*
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 48c21bac5a5..46b4e347ed7 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -743,6 +743,12 @@ done:
source = kmap_atomic(page, KM_USER0);
memcpy(jh->b_frozen_data, source+offset, jh2bh(jh)->b_size);
kunmap_atomic(source, KM_USER0);
+
+ /*
+ * Now that the frozen data is saved off, we need to store
+ * any matching triggers.
+ */
+ jh->b_frozen_triggers = jh->b_triggers;
}
jbd_unlock_bh_state(bh);
@@ -946,6 +952,47 @@ out:
}
/**
+ * void jbd2_journal_set_triggers() - Add triggers for commit writeout
+ * @bh: buffer to trigger on
+ * @type: struct jbd2_buffer_trigger_type containing the trigger(s).
+ *
+ * Set any triggers on this journal_head. This is always safe, because
+ * triggers for a committing buffer will be saved off, and triggers for
+ * a running transaction will match the buffer in that transaction.
+ *
+ * Call with NULL to clear the triggers.
+ */
+void jbd2_journal_set_triggers(struct buffer_head *bh,
+ struct jbd2_buffer_trigger_type *type)
+{
+ struct journal_head *jh = bh2jh(bh);
+
+ jh->b_triggers = type;
+}
+
+void jbd2_buffer_commit_trigger(struct journal_head *jh, void *mapped_data,
+ struct jbd2_buffer_trigger_type *triggers)
+{
+ struct buffer_head *bh = jh2bh(jh);
+
+ if (!triggers || !triggers->t_commit)
+ return;
+
+ triggers->t_commit(triggers, bh, mapped_data, bh->b_size);
+}
+
+void jbd2_buffer_abort_trigger(struct journal_head *jh,
+ struct jbd2_buffer_trigger_type *triggers)
+{
+ if (!triggers || !triggers->t_abort)
+ return;
+
+ triggers->t_abort(triggers, jh2bh(jh));
+}
+
+
+
+/**
* int jbd2_journal_dirty_metadata() - mark a buffer as containing dirty metadata
* @handle: transaction to add buffer to.
* @bh: buffer to mark
diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index d6363d8309d..0f94381ca6d 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -58,9 +58,9 @@
/*
* __mark_inode_dirty expects inodes to be hashed. Since we don't want
- * special inodes in the fileset inode space, we hash them to a dummy head
+ * special inodes in the fileset inode space, we make them appear hashed,
+ * but do not put on any lists.
*/
-static HLIST_HEAD(aggregate_hash);
/*
* imap locks
@@ -496,7 +496,11 @@ struct inode *diReadSpecial(struct super_block *sb, ino_t inum, int secondary)
/* release the page */
release_metapage(mp);
- hlist_add_head(&ip->i_hash, &aggregate_hash);
+ /*
+ * that will look hashed, but won't be on any list; hlist_del()
+ * will work fine and require no locking.
+ */
+ ip->i_hash.pprev = &ip->i_hash.next;
return (ip);
}
diff --git a/fs/libfs.c b/fs/libfs.c
index bdaec17fa38..49b44099dab 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -231,7 +231,6 @@ int get_sb_pseudo(struct file_system_type *fs_type, char *name,
*/
root->i_ino = 1;
root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR;
- root->i_uid = root->i_gid = 0;
root->i_atime = root->i_mtime = root->i_ctime = CURRENT_TIME;
dentry = d_alloc(NULL, &d_name);
if (!dentry) {
@@ -436,8 +435,6 @@ int simple_fill_super(struct super_block *s, int magic, struct tree_descr *files
*/
inode->i_ino = 1;
inode->i_mode = S_IFDIR | 0755;
- inode->i_uid = inode->i_gid = 0;
- inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
inode->i_op = &simple_dir_inode_operations;
inode->i_fop = &simple_dir_operations;
@@ -464,8 +461,6 @@ int simple_fill_super(struct super_block *s, int magic, struct tree_descr *files
if (!inode)
goto out;
inode->i_mode = S_IFREG | files->mode;
- inode->i_uid = inode->i_gid = 0;
- inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
inode->i_fop = files->ops;
inode->i_ino = i;
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 31668b690e0..dd7957064a8 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -16,7 +16,6 @@
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/lockd/lockd.h>
-#include <linux/lockd/sm_inter.h>
#define NLMDBG_FACILITY NLMDBG_CLIENT
#define NLMCLNT_GRACE_WAIT (5*HZ)
@@ -518,11 +517,9 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
unsigned char fl_type;
int status = -ENOLCK;
- if (nsm_monitor(host) < 0) {
- printk(KERN_NOTICE "lockd: failed to monitor %s\n",
- host->h_name);
+ if (nsm_monitor(host) < 0)
goto out;
- }
+
fl->fl_flags |= FL_ACCESS;
status = do_vfs_lock(fl);
fl->fl_flags = fl_flags;
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index abdebf76b82..99d737bd432 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -15,7 +15,6 @@
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/lockd/lockd.h>
-#include <linux/lockd/sm_inter.h>
#include <linux/mutex.h>
#include <net/ipv6.h>
@@ -32,11 +31,6 @@ static int nrhosts;
static DEFINE_MUTEX(nlm_host_mutex);
static void nlm_gc_hosts(void);
-static struct nsm_handle *nsm_find(const struct sockaddr *sap,
- const size_t salen,
- const char *hostname,
- const size_t hostname_len,
- const int create);
struct nlm_lookup_host_info {
const int server; /* search for server|client */
@@ -105,32 +99,6 @@ static void nlm_clear_port(struct sockaddr *sap)
}
}
-static void nlm_display_address(const struct sockaddr *sap,
- char *buf, const size_t len)
-{
- const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
- const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
-
- switch (sap->sa_family) {
- case AF_UNSPEC:
- snprintf(buf, len, "unspecified");
- break;
- case AF_INET:
- snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
- break;
- case AF_INET6:
- if (ipv6_addr_v4mapped(&sin6->sin6_addr))
- snprintf(buf, len, "%pI4",
- &sin6->sin6_addr.s6_addr32[3]);
- else
- snprintf(buf, len, "%pI6", &sin6->sin6_addr);
- break;
- default:
- snprintf(buf, len, "unsupported address family");
- break;
- }
-}
-
/*
* Common host lookup routine for server & client
*/
@@ -190,8 +158,8 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni)
atomic_inc(&nsm->sm_count);
else {
host = NULL;
- nsm = nsm_find(ni->sap, ni->salen,
- ni->hostname, ni->hostname_len, 1);
+ nsm = nsm_get_handle(ni->sap, ni->salen,
+ ni->hostname, ni->hostname_len);
if (!nsm) {
dprintk("lockd: nlm_lookup_host failed; "
"no nsm handle\n");
@@ -206,6 +174,7 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni)
goto out;
}
host->h_name = nsm->sm_name;
+ host->h_addrbuf = nsm->sm_addrbuf;
memcpy(nlm_addr(host), ni->sap, ni->salen);
host->h_addrlen = ni->salen;
nlm_clear_port(nlm_addr(host));
@@ -232,11 +201,6 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni)
nrhosts++;
- nlm_display_address((struct sockaddr *)&host->h_addr,
- host->h_addrbuf, sizeof(host->h_addrbuf));
- nlm_display_address((struct sockaddr *)&host->h_srcaddr,
- host->h_srcaddrbuf, sizeof(host->h_srcaddrbuf));
-
dprintk("lockd: nlm_lookup_host created host %s\n",
host->h_name);
@@ -256,10 +220,8 @@ nlm_destroy_host(struct nlm_host *host)
BUG_ON(!list_empty(&host->h_lockowners));
BUG_ON(atomic_read(&host->h_count));
- /*
- * Release NSM handle and unmonitor host.
- */
nsm_unmonitor(host);
+ nsm_release(host->h_nsmhandle);
clnt = host->h_rpcclnt;
if (clnt != NULL)
@@ -378,8 +340,8 @@ nlm_bind_host(struct nlm_host *host)
{
struct rpc_clnt *clnt;
- dprintk("lockd: nlm_bind_host %s (%s), my addr=%s\n",
- host->h_name, host->h_addrbuf, host->h_srcaddrbuf);
+ dprintk("lockd: nlm_bind_host %s (%s)\n",
+ host->h_name, host->h_addrbuf);
/* Lock host handle */
mutex_lock(&host->h_mutex);
@@ -481,35 +443,23 @@ void nlm_release_host(struct nlm_host *host)
}
}
-/*
- * We were notified that the host indicated by address &sin
- * has rebooted.
- * Release all resources held by that peer.
+/**
+ * nlm_host_rebooted - Release all resources held by rebooted host
+ * @info: pointer to decoded results of NLM_SM_NOTIFY call
+ *
+ * We were notified that the specified host has rebooted. Release
+ * all resources held by that peer.
*/
-void nlm_host_rebooted(const struct sockaddr_in *sin,
- const char *hostname,
- unsigned int hostname_len,
- u32 new_state)
+void nlm_host_rebooted(const struct nlm_reboot *info)
{
struct hlist_head *chain;
struct hlist_node *pos;
struct nsm_handle *nsm;
struct nlm_host *host;
- nsm = nsm_find((struct sockaddr *)sin, sizeof(*sin),
- hostname, hostname_len, 0);
- if (nsm == NULL) {
- dprintk("lockd: never saw rebooted peer '%.*s' before\n",
- hostname_len, hostname);
+ nsm = nsm_reboot_lookup(info);
+ if (unlikely(nsm == NULL))
return;
- }
-
- dprintk("lockd: nlm_host_rebooted(%.*s, %s)\n",
- hostname_len, hostname, nsm->sm_addrbuf);
-
- /* When reclaiming locks on this peer, make sure that
- * we set up a new notification */
- nsm->sm_monitored = 0;
/* Mark all hosts tied to this NSM state as having rebooted.
* We run the loop repeatedly, because we drop the host table
@@ -520,8 +470,8 @@ again: mutex_lock(&nlm_host_mutex);
for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) {
hlist_for_each_entry(host, pos, chain, h_hash) {
if (host->h_nsmhandle == nsm
- && host->h_nsmstate != new_state) {
- host->h_nsmstate = new_state;
+ && host->h_nsmstate != info->state) {
+ host->h_nsmstate = info->state;
host->h_state++;
nlm_get_host(host);
@@ -629,89 +579,3 @@ nlm_gc_hosts(void)
next_gc = jiffies + NLM_HOST_COLLECT;
}
-
-
-/*
- * Manage NSM handles
- */
-static LIST_HEAD(nsm_handles);
-static DEFINE_SPINLOCK(nsm_lock);
-
-static struct nsm_handle *nsm_find(const struct sockaddr *sap,
- const size_t salen,
- const char *hostname,
- const size_t hostname_len,
- const int create)
-{
- struct nsm_handle *nsm = NULL;
- struct nsm_handle *pos;
-
- if (!sap)
- return NULL;
-
- if (hostname && memchr(hostname, '/', hostname_len) != NULL) {
- if (printk_ratelimit()) {
- printk(KERN_WARNING "Invalid hostname \"%.*s\" "
- "in NFS lock request\n",
- (int)hostname_len, hostname);
- }
- return NULL;
- }
-
-retry:
- spin_lock(&nsm_lock);
- list_for_each_entry(pos, &nsm_handles, sm_link) {
-
- if (hostname && nsm_use_hostnames) {
- if (strlen(pos->sm_name) != hostname_len
- || memcmp(pos->sm_name, hostname, hostname_len))
- continue;
- } else if (!nlm_cmp_addr(nsm_addr(pos), sap))
- continue;
- atomic_inc(&pos->sm_count);
- kfree(nsm);
- nsm = pos;
- goto found;
- }
- if (nsm) {
- list_add(&nsm->sm_link, &nsm_handles);
- goto found;
- }
- spin_unlock(&nsm_lock);
-
- if (!create)
- return NULL;
-
- nsm = kzalloc(sizeof(*nsm) + hostname_len + 1, GFP_KERNEL);
- if (nsm == NULL)
- return NULL;
-
- memcpy(nsm_addr(nsm), sap, salen);
- nsm->sm_addrlen = salen;
- nsm->sm_name = (char *) (nsm + 1);
- memcpy(nsm->sm_name, hostname, hostname_len);
- nsm->sm_name[hostname_len] = '\0';
- nlm_display_address((struct sockaddr *)&nsm->sm_addr,
- nsm->sm_addrbuf, sizeof(nsm->sm_addrbuf));
- atomic_set(&nsm->sm_count, 1);
- goto retry;
-
-found:
- spin_unlock(&nsm_lock);
- return nsm;
-}
-
-/*
- * Release an NSM handle
- */
-void
-nsm_release(struct nsm_handle *nsm)
-{
- if (!nsm)
- return;
- if (atomic_dec_and_lock(&nsm->sm_count, &nsm_lock)) {
- list_del(&nsm->sm_link);
- spin_unlock(&nsm_lock);
- kfree(nsm);
- }
-}
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index ffd3461f75e..5e2c4d5ac82 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -9,35 +9,123 @@
#include <linux/types.h>
#include <linux/utsname.h>
#include <linux/kernel.h>
+#include <linux/ktime.h>
+
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/xprtsock.h>
#include <linux/sunrpc/svc.h>
#include <linux/lockd/lockd.h>
-#include <linux/lockd/sm_inter.h>
-
#define NLMDBG_FACILITY NLMDBG_MONITOR
+#define NSM_PROGRAM 100024
+#define NSM_VERSION 1
+
+enum {
+ NSMPROC_NULL,
+ NSMPROC_STAT,
+ NSMPROC_MON,
+ NSMPROC_UNMON,
+ NSMPROC_UNMON_ALL,
+ NSMPROC_SIMU_CRASH,
+ NSMPROC_NOTIFY,
+};
+
+struct nsm_args {
+ struct nsm_private *priv;
+ u32 prog; /* RPC callback info */
+ u32 vers;
+ u32 proc;
-#define XDR_ADDRBUF_LEN (20)
+ char *mon_name;
+};
-static struct rpc_clnt * nsm_create(void);
+struct nsm_res {
+ u32 status;
+ u32 state;
+};
static struct rpc_program nsm_program;
+static LIST_HEAD(nsm_handles);
+static DEFINE_SPINLOCK(nsm_lock);
/*
* Local NSM state
*/
-int nsm_local_state;
+int __read_mostly nsm_local_state;
+int __read_mostly nsm_use_hostnames;
-/*
- * Common procedure for SM_MON/SM_UNMON calls
- */
-static int
-nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res)
+static inline struct sockaddr *nsm_addr(const struct nsm_handle *nsm)
+{
+ return (struct sockaddr *)&nsm->sm_addr;
+}
+
+static void nsm_display_ipv4_address(const struct sockaddr *sap, char *buf,
+ const size_t len)
+{
+ const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
+ snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
+}
+
+static void nsm_display_ipv6_address(const struct sockaddr *sap, char *buf,
+ const size_t len)
+{
+ const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
+
+ if (ipv6_addr_v4mapped(&sin6->sin6_addr))
+ snprintf(buf, len, "%pI4", &sin6->sin6_addr.s6_addr32[3]);
+ else if (sin6->sin6_scope_id != 0)
+ snprintf(buf, len, "%pI6%%%u", &sin6->sin6_addr,
+ sin6->sin6_scope_id);
+ else
+ snprintf(buf, len, "%pI6", &sin6->sin6_addr);
+}
+
+static void nsm_display_address(const struct sockaddr *sap,
+ char *buf, const size_t len)
+{
+ switch (sap->sa_family) {
+ case AF_INET:
+ nsm_display_ipv4_address(sap, buf, len);
+ break;
+ case AF_INET6:
+ nsm_display_ipv6_address(sap, buf, len);
+ break;
+ default:
+ snprintf(buf, len, "unsupported address family");
+ break;
+ }
+}
+
+static struct rpc_clnt *nsm_create(void)
+{
+ struct sockaddr_in sin = {
+ .sin_family = AF_INET,
+ .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
+ };
+ struct rpc_create_args args = {
+ .protocol = XPRT_TRANSPORT_UDP,
+ .address = (struct sockaddr *)&sin,
+ .addrsize = sizeof(sin),
+ .servername = "rpc.statd",
+ .program = &nsm_program,
+ .version = NSM_VERSION,
+ .authflavor = RPC_AUTH_NULL,
+ };
+
+ return rpc_create(&args);
+}
+
+static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res)
{
struct rpc_clnt *clnt;
int status;
- struct nsm_args args;
+ struct nsm_args args = {
+ .priv = &nsm->sm_priv,
+ .prog = NLM_PROGRAM,
+ .vers = 3,
+ .proc = NLMPROC_NSM_NOTIFY,
+ .mon_name = nsm->sm_mon_name,
+ };
struct rpc_message msg = {
.rpc_argp = &args,
.rpc_resp = res,
@@ -46,22 +134,18 @@ nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res)
clnt = nsm_create();
if (IS_ERR(clnt)) {
status = PTR_ERR(clnt);
+ dprintk("lockd: failed to create NSM upcall transport, "
+ "status=%d\n", status);
goto out;
}
- memset(&args, 0, sizeof(args));
- args.mon_name = nsm->sm_name;
- args.addr = nsm_addr_in(nsm)->sin_addr.s_addr;
- args.prog = NLM_PROGRAM;
- args.vers = 3;
- args.proc = NLMPROC_NSM_NOTIFY;
memset(res, 0, sizeof(*res));
msg.rpc_proc = &clnt->cl_procinfo[proc];
status = rpc_call_sync(clnt, &msg, 0);
if (status < 0)
- printk(KERN_DEBUG "nsm_mon_unmon: rpc failed, status=%d\n",
- status);
+ dprintk("lockd: NSM upcall RPC failed, status=%d\n",
+ status);
else
status = 0;
rpc_shutdown_client(clnt);
@@ -69,82 +153,272 @@ nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res)
return status;
}
-/*
- * Set up monitoring of a remote host
+/**
+ * nsm_monitor - Notify a peer in case we reboot
+ * @host: pointer to nlm_host of peer to notify
+ *
+ * If this peer is not already monitored, this function sends an
+ * upcall to the local rpc.statd to record the name/address of
+ * the peer to notify in case we reboot.
+ *
+ * Returns zero if the peer is monitored by the local rpc.statd;
+ * otherwise a negative errno value is returned.
*/
-int
-nsm_monitor(struct nlm_host *host)
+int nsm_monitor(const struct nlm_host *host)
{
struct nsm_handle *nsm = host->h_nsmhandle;
struct nsm_res res;
int status;
- dprintk("lockd: nsm_monitor(%s)\n", host->h_name);
- BUG_ON(nsm == NULL);
+ dprintk("lockd: nsm_monitor(%s)\n", nsm->sm_name);
if (nsm->sm_monitored)
return 0;
- status = nsm_mon_unmon(nsm, SM_MON, &res);
+ /*
+ * Choose whether to record the caller_name or IP address of
+ * this peer in the local rpc.statd's database.
+ */
+ nsm->sm_mon_name = nsm_use_hostnames ? nsm->sm_name : nsm->sm_addrbuf;
- if (status < 0 || res.status != 0)
- printk(KERN_NOTICE "lockd: cannot monitor %s\n", host->h_name);
+ status = nsm_mon_unmon(nsm, NSMPROC_MON, &res);
+ if (res.status != 0)
+ status = -EIO;
+ if (status < 0)
+ printk(KERN_NOTICE "lockd: cannot monitor %s\n", nsm->sm_name);
else
nsm->sm_monitored = 1;
return status;
}
-/*
- * Cease to monitor remote host
+/**
+ * nsm_unmonitor - Unregister peer notification
+ * @host: pointer to nlm_host of peer to stop monitoring
+ *
+ * If this peer is monitored, this function sends an upcall to
+ * tell the local rpc.statd not to send this peer a notification
+ * when we reboot.
*/
-int
-nsm_unmonitor(struct nlm_host *host)
+void nsm_unmonitor(const struct nlm_host *host)
{
struct nsm_handle *nsm = host->h_nsmhandle;
struct nsm_res res;
- int status = 0;
-
- if (nsm == NULL)
- return 0;
- host->h_nsmhandle = NULL;
+ int status;
if (atomic_read(&nsm->sm_count) == 1
&& nsm->sm_monitored && !nsm->sm_sticky) {
- dprintk("lockd: nsm_unmonitor(%s)\n", host->h_name);
+ dprintk("lockd: nsm_unmonitor(%s)\n", nsm->sm_name);
- status = nsm_mon_unmon(nsm, SM_UNMON, &res);
+ status = nsm_mon_unmon(nsm, NSMPROC_UNMON, &res);
+ if (res.status != 0)
+ status = -EIO;
if (status < 0)
printk(KERN_NOTICE "lockd: cannot unmonitor %s\n",
- host->h_name);
+ nsm->sm_name);
else
nsm->sm_monitored = 0;
}
- nsm_release(nsm);
- return status;
+}
+
+static struct nsm_handle *nsm_lookup_hostname(const char *hostname,
+ const size_t len)
+{
+ struct nsm_handle *nsm;
+
+ list_for_each_entry(nsm, &nsm_handles, sm_link)
+ if (strlen(nsm->sm_name) == len &&
+ memcmp(nsm->sm_name, hostname, len) == 0)
+ return nsm;
+ return NULL;
+}
+
+static struct nsm_handle *nsm_lookup_addr(const struct sockaddr *sap)
+{
+ struct nsm_handle *nsm;
+
+ list_for_each_entry(nsm, &nsm_handles, sm_link)
+ if (nlm_cmp_addr(nsm_addr(nsm), sap))
+ return nsm;
+ return NULL;
+}
+
+static struct nsm_handle *nsm_lookup_priv(const struct nsm_private *priv)
+{
+ struct nsm_handle *nsm;
+
+ list_for_each_entry(nsm, &nsm_handles, sm_link)
+ if (memcmp(nsm->sm_priv.data, priv->data,
+ sizeof(priv->data)) == 0)
+ return nsm;
+ return NULL;
}
/*
- * Create NSM client for the local host
+ * Construct a unique cookie to match this nsm_handle to this monitored
+ * host. It is passed to the local rpc.statd via NSMPROC_MON, and
+ * returned via NLMPROC_SM_NOTIFY, in the "priv" field of these
+ * requests.
+ *
+ * The NSM protocol requires that these cookies be unique while the
+ * system is running. We prefer a stronger requirement of making them
+ * unique across reboots. If user space bugs cause a stale cookie to
+ * be sent to the kernel, it could cause the wrong host to lose its
+ * lock state if cookies were not unique across reboots.
+ *
+ * The cookies are exposed only to local user space via loopback. They
+ * do not appear on the physical network. If we want greater security
+ * for some reason, nsm_init_private() could perform a one-way hash to
+ * obscure the contents of the cookie.
*/
-static struct rpc_clnt *
-nsm_create(void)
+static void nsm_init_private(struct nsm_handle *nsm)
{
- struct sockaddr_in sin = {
- .sin_family = AF_INET,
- .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
- .sin_port = 0,
- };
- struct rpc_create_args args = {
- .protocol = XPRT_TRANSPORT_UDP,
- .address = (struct sockaddr *)&sin,
- .addrsize = sizeof(sin),
- .servername = "localhost",
- .program = &nsm_program,
- .version = SM_VERSION,
- .authflavor = RPC_AUTH_NULL,
- };
+ u64 *p = (u64 *)&nsm->sm_priv.data;
+ struct timespec ts;
- return rpc_create(&args);
+ ktime_get_ts(&ts);
+ *p++ = timespec_to_ns(&ts);
+ *p = (unsigned long)nsm;
+}
+
+static struct nsm_handle *nsm_create_handle(const struct sockaddr *sap,
+ const size_t salen,
+ const char *hostname,
+ const size_t hostname_len)
+{
+ struct nsm_handle *new;
+
+ new = kzalloc(sizeof(*new) + hostname_len + 1, GFP_KERNEL);
+ if (unlikely(new == NULL))
+ return NULL;
+
+ atomic_set(&new->sm_count, 1);
+ new->sm_name = (char *)(new + 1);
+ memcpy(nsm_addr(new), sap, salen);
+ new->sm_addrlen = salen;
+ nsm_init_private(new);
+ nsm_display_address((const struct sockaddr *)&new->sm_addr,
+ new->sm_addrbuf, sizeof(new->sm_addrbuf));
+ memcpy(new->sm_name, hostname, hostname_len);
+ new->sm_name[hostname_len] = '\0';
+
+ return new;
+}
+
+/**
+ * nsm_get_handle - Find or create a cached nsm_handle
+ * @sap: pointer to socket address of handle to find
+ * @salen: length of socket address
+ * @hostname: pointer to C string containing hostname to find
+ * @hostname_len: length of C string
+ *
+ * Behavior is modulated by the global nsm_use_hostnames variable.
+ *
+ * Returns a cached nsm_handle after bumping its ref count, or
+ * returns a fresh nsm_handle if a handle that matches @sap and/or
+ * @hostname cannot be found in the handle cache. Returns NULL if
+ * an error occurs.
+ */
+struct nsm_handle *nsm_get_handle(const struct sockaddr *sap,
+ const size_t salen, const char *hostname,
+ const size_t hostname_len)
+{
+ struct nsm_handle *cached, *new = NULL;
+
+ if (hostname && memchr(hostname, '/', hostname_len) != NULL) {
+ if (printk_ratelimit()) {
+ printk(KERN_WARNING "Invalid hostname \"%.*s\" "
+ "in NFS lock request\n",
+ (int)hostname_len, hostname);
+ }
+ return NULL;
+ }
+
+retry:
+ spin_lock(&nsm_lock);
+
+ if (nsm_use_hostnames && hostname != NULL)
+ cached = nsm_lookup_hostname(hostname, hostname_len);
+ else
+ cached = nsm_lookup_addr(sap);
+
+ if (cached != NULL) {
+ atomic_inc(&cached->sm_count);
+ spin_unlock(&nsm_lock);
+ kfree(new);
+ dprintk("lockd: found nsm_handle for %s (%s), "
+ "cnt %d\n", cached->sm_name,
+ cached->sm_addrbuf,
+ atomic_read(&cached->sm_count));
+ return cached;
+ }
+
+ if (new != NULL) {
+ list_add(&new->sm_link, &nsm_handles);
+ spin_unlock(&nsm_lock);
+ dprintk("lockd: created nsm_handle for %s (%s)\n",
+ new->sm_name, new->sm_addrbuf);
+ return new;
+ }
+
+ spin_unlock(&nsm_lock);
+
+ new = nsm_create_handle(sap, salen, hostname, hostname_len);
+ if (unlikely(new == NULL))
+ return NULL;
+ goto retry;
+}
+
+/**
+ * nsm_reboot_lookup - match NLMPROC_SM_NOTIFY arguments to an nsm_handle
+ * @info: pointer to NLMPROC_SM_NOTIFY arguments
+ *
+ * Returns a matching nsm_handle if found in the nsm cache; the returned
+ * nsm_handle's reference count is bumped and sm_monitored is cleared.
+ * Otherwise returns NULL if some error occurred.
+ */
+struct nsm_handle *nsm_reboot_lookup(const struct nlm_reboot *info)
+{
+ struct nsm_handle *cached;
+
+ spin_lock(&nsm_lock);
+
+ cached = nsm_lookup_priv(&info->priv);
+ if (unlikely(cached == NULL)) {
+ spin_unlock(&nsm_lock);
+ dprintk("lockd: never saw rebooted peer '%.*s' before\n",
+ info->len, info->mon);
+ return cached;
+ }
+
+ atomic_inc(&cached->sm_count);
+ spin_unlock(&nsm_lock);
+
+ /*
+ * During subsequent lock activity, force a fresh
+ * notification to be set up for this host.
+ */
+ cached->sm_monitored = 0;
+
+ dprintk("lockd: host %s (%s) rebooted, cnt %d\n",
+ cached->sm_name, cached->sm_addrbuf,
+ atomic_read(&cached->sm_count));
+ return cached;
+}
+
+/**
+ * nsm_release - Release an NSM handle
+ * @nsm: pointer to handle to be released
+ *
+ */
+void nsm_release(struct nsm_handle *nsm)
+{
+ if (atomic_dec_and_lock(&nsm->sm_count, &nsm_lock)) {
+ list_del(&nsm->sm_link);
+ spin_unlock(&nsm_lock);
+ dprintk("lockd: destroyed nsm_handle for %s (%s)\n",
+ nsm->sm_name, nsm->sm_addrbuf);
+ kfree(nsm);
+ }
}
/*
@@ -154,127 +428,132 @@ nsm_create(void)
* Status Monitor wire protocol.
*/
-static __be32 *xdr_encode_nsm_string(__be32 *p, char *string)
+static int encode_nsm_string(struct xdr_stream *xdr, const char *string)
{
- size_t len = strlen(string);
-
- if (len > SM_MAXSTRLEN)
- len = SM_MAXSTRLEN;
- return xdr_encode_opaque(p, string, len);
+ const u32 len = strlen(string);
+ __be32 *p;
+
+ if (unlikely(len > SM_MAXSTRLEN))
+ return -EIO;
+ p = xdr_reserve_space(xdr, sizeof(u32) + len);
+ if (unlikely(p == NULL))
+ return -EIO;
+ xdr_encode_opaque(p, string, len);
+ return 0;
}
/*
* "mon_name" specifies the host to be monitored.
- *
- * Linux uses a text version of the IP address of the remote
- * host as the host identifier (the "mon_name" argument).
- *
- * Linux statd always looks up the canonical hostname first for
- * whatever remote hostname it receives, so this works alright.
*/
-static __be32 *xdr_encode_mon_name(__be32 *p, struct nsm_args *argp)
+static int encode_mon_name(struct xdr_stream *xdr, const struct nsm_args *argp)
{
- char buffer[XDR_ADDRBUF_LEN + 1];
- char *name = argp->mon_name;
-
- if (!nsm_use_hostnames) {
- snprintf(buffer, XDR_ADDRBUF_LEN,
- "%pI4", &argp->addr);
- name = buffer;
- }
-
- return xdr_encode_nsm_string(p, name);
+ return encode_nsm_string(xdr, argp->mon_name);
}
/*
* The "my_id" argument specifies the hostname and RPC procedure
* to be called when the status manager receives notification
- * (via the SM_NOTIFY call) that the state of host "mon_name"
+ * (via the NLMPROC_SM_NOTIFY call) that the state of host "mon_name"
* has changed.
*/
-static __be32 *xdr_encode_my_id(__be32 *p, struct nsm_args *argp)
+static int encode_my_id(struct xdr_stream *xdr, const struct nsm_args *argp)
{
- p = xdr_encode_nsm_string(p, utsname()->nodename);
- if (!p)
- return ERR_PTR(-EIO);
-
+ int status;
+ __be32 *p;
+
+ status = encode_nsm_string(xdr, utsname()->nodename);
+ if (unlikely(status != 0))
+ return status;
+ p = xdr_reserve_space(xdr, 3 * sizeof(u32));
+ if (unlikely(p == NULL))
+ return -EIO;
*p++ = htonl(argp->prog);
*p++ = htonl(argp->vers);
*p++ = htonl(argp->proc);
-
- return p;
+ return 0;
}
/*
* The "mon_id" argument specifies the non-private arguments
- * of an SM_MON or SM_UNMON call.
+ * of an NSMPROC_MON or NSMPROC_UNMON call.
*/
-static __be32 *xdr_encode_mon_id(__be32 *p, struct nsm_args *argp)
+static int encode_mon_id(struct xdr_stream *xdr, const struct nsm_args *argp)
{
- p = xdr_encode_mon_name(p, argp);
- if (!p)
- return ERR_PTR(-EIO);
+ int status;
- return xdr_encode_my_id(p, argp);
+ status = encode_mon_name(xdr, argp);
+ if (unlikely(status != 0))
+ return status;
+ return encode_my_id(xdr, argp);
}
/*
* The "priv" argument may contain private information required
- * by the SM_MON call. This information will be supplied in the
- * SM_NOTIFY call.
- *
- * Linux provides the raw IP address of the monitored host,
- * left in network byte order.
+ * by the NSMPROC_MON call. This information will be supplied in the
+ * NLMPROC_SM_NOTIFY call.
*/
-static __be32 *xdr_encode_priv(__be32 *p, struct nsm_args *argp)
+static int encode_priv(struct xdr_stream *xdr, const struct nsm_args *argp)
{
- *p++ = argp->addr;
- *p++ = 0;
- *p++ = 0;
- *p++ = 0;
+ __be32 *p;
- return p;
+ p = xdr_reserve_space(xdr, SM_PRIV_SIZE);
+ if (unlikely(p == NULL))
+ return -EIO;
+ xdr_encode_opaque_fixed(p, argp->priv->data, SM_PRIV_SIZE);
+ return 0;
}
-static int
-xdr_encode_mon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
+static int xdr_enc_mon(struct rpc_rqst *req, __be32 *p,
+ const struct nsm_args *argp)
{
- p = xdr_encode_mon_id(p, argp);
- if (IS_ERR(p))
- return PTR_ERR(p);
-
- p = xdr_encode_priv(p, argp);
- if (IS_ERR(p))
- return PTR_ERR(p);
-
- rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
- return 0;
+ struct xdr_stream xdr;
+ int status;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ status = encode_mon_id(&xdr, argp);
+ if (unlikely(status))
+ return status;
+ return encode_priv(&xdr, argp);
}
-static int
-xdr_encode_unmon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
+static int xdr_enc_unmon(struct rpc_rqst *req, __be32 *p,
+ const struct nsm_args *argp)
{
- p = xdr_encode_mon_id(p, argp);
- if (IS_ERR(p))
- return PTR_ERR(p);
- rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
- return 0;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ return encode_mon_id(&xdr, argp);
}
-static int
-xdr_decode_stat_res(struct rpc_rqst *rqstp, __be32 *p, struct nsm_res *resp)
+static int xdr_dec_stat_res(struct rpc_rqst *rqstp, __be32 *p,
+ struct nsm_res *resp)
{
+ struct xdr_stream xdr;
+
+ xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+ p = xdr_inline_decode(&xdr, 2 * sizeof(u32));
+ if (unlikely(p == NULL))
+ return -EIO;
resp->status = ntohl(*p++);
- resp->state = ntohl(*p++);
- dprintk("nsm: xdr_decode_stat_res status %d state %d\n",
+ resp->state = ntohl(*p);
+
+ dprintk("lockd: xdr_dec_stat_res status %d state %d\n",
resp->status, resp->state);
return 0;
}
-static int
-xdr_decode_stat(struct rpc_rqst *rqstp, __be32 *p, struct nsm_res *resp)
+static int xdr_dec_stat(struct rpc_rqst *rqstp, __be32 *p,
+ struct nsm_res *resp)
{
- resp->state = ntohl(*p++);
+ struct xdr_stream xdr;
+
+ xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+ p = xdr_inline_decode(&xdr, sizeof(u32));
+ if (unlikely(p == NULL))
+ return -EIO;
+ resp->state = ntohl(*p);
+
+ dprintk("lockd: xdr_dec_stat state %d\n", resp->state);
return 0;
}
@@ -288,22 +567,22 @@ xdr_decode_stat(struct rpc_rqst *rqstp, __be32 *p, struct nsm_res *resp)
#define SM_unmonres_sz 1
static struct rpc_procinfo nsm_procedures[] = {
-[SM_MON] = {
- .p_proc = SM_MON,
- .p_encode = (kxdrproc_t) xdr_encode_mon,
- .p_decode = (kxdrproc_t) xdr_decode_stat_res,
+[NSMPROC_MON] = {
+ .p_proc = NSMPROC_MON,
+ .p_encode = (kxdrproc_t)xdr_enc_mon,
+ .p_decode = (kxdrproc_t)xdr_dec_stat_res,
.p_arglen = SM_mon_sz,
.p_replen = SM_monres_sz,
- .p_statidx = SM_MON,
+ .p_statidx = NSMPROC_MON,
.p_name = "MONITOR",
},
-[SM_UNMON] = {
- .p_proc = SM_UNMON,
- .p_encode = (kxdrproc_t) xdr_encode_unmon,
- .p_decode = (kxdrproc_t) xdr_decode_stat,
+[NSMPROC_UNMON] = {
+ .p_proc = NSMPROC_UNMON,
+ .p_encode = (kxdrproc_t)xdr_enc_unmon,
+ .p_decode = (kxdrproc_t)xdr_dec_stat,
.p_arglen = SM_mon_id_sz,
.p_replen = SM_unmonres_sz,
- .p_statidx = SM_UNMON,
+ .p_statidx = NSMPROC_UNMON,
.p_name = "UNMONITOR",
},
};
@@ -322,7 +601,7 @@ static struct rpc_stat nsm_stats;
static struct rpc_program nsm_program = {
.name = "statd",
- .number = SM_PROGRAM,
+ .number = NSM_PROGRAM,
.nrvers = ARRAY_SIZE(nsm_version),
.version = nsm_version,
.stats = &nsm_stats
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 252d80163d0..64f1c31b585 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -35,7 +35,6 @@
#include <linux/sunrpc/svcsock.h>
#include <net/ip.h>
#include <linux/lockd/lockd.h>
-#include <linux/lockd/sm_inter.h>
#include <linux/nfs.h>
#define NLMDBG_FACILITY NLMDBG_SVC
@@ -54,13 +53,26 @@ static struct svc_rqst *nlmsvc_rqst;
unsigned long nlmsvc_timeout;
/*
+ * If the kernel has IPv6 support available, always listen for
+ * both AF_INET and AF_INET6 requests.
+ */
+#if (defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)) && \
+ defined(CONFIG_SUNRPC_REGISTER_V4)
+static const sa_family_t nlmsvc_family = AF_INET6;
+#else /* (CONFIG_IPV6 || CONFIG_IPV6_MODULE) && CONFIG_SUNRPC_REGISTER_V4 */
+static const sa_family_t nlmsvc_family = AF_INET;
+#endif /* (CONFIG_IPV6 || CONFIG_IPV6_MODULE) && CONFIG_SUNRPC_REGISTER_V4 */
+
+/*
* These can be set at insmod time (useful for NFS as root filesystem),
* and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003
*/
static unsigned long nlm_grace_period;
static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO;
static int nlm_udpport, nlm_tcpport;
-int nsm_use_hostnames = 0;
+
+/* RLIM_NOFILE defaults to 1024. That seems like a reasonable default here. */
+static unsigned int nlm_max_connections = 1024;
/*
* Constants needed for the sysctl interface.
@@ -143,6 +155,9 @@ lockd(void *vrqstp)
long timeout = MAX_SCHEDULE_TIMEOUT;
RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
+ /* update sv_maxconn if it has changed */
+ rqstp->rq_server->sv_maxconn = nlm_max_connections;
+
if (signalled()) {
flush_signals(current);
if (nlmsvc_ops) {
@@ -189,6 +204,19 @@ lockd(void *vrqstp)
return 0;
}
+static int create_lockd_listener(struct svc_serv *serv, char *name,
+ unsigned short port)
+{
+ struct svc_xprt *xprt;
+
+ xprt = svc_find_xprt(serv, name, 0, 0);
+ if (xprt == NULL)
+ return svc_create_xprt(serv, name, port, SVC_SOCK_DEFAULTS);
+
+ svc_xprt_put(xprt);
+ return 0;
+}
+
/*
* Ensure there are active UDP and TCP listeners for lockd.
*
@@ -202,29 +230,23 @@ lockd(void *vrqstp)
static int make_socks(struct svc_serv *serv)
{
static int warned;
- struct svc_xprt *xprt;
- int err = 0;
+ int err;
- xprt = svc_find_xprt(serv, "udp", 0, 0);
- if (!xprt)
- err = svc_create_xprt(serv, "udp", nlm_udpport,
- SVC_SOCK_DEFAULTS);
- else
- svc_xprt_put(xprt);
- if (err >= 0) {
- xprt = svc_find_xprt(serv, "tcp", 0, 0);
- if (!xprt)
- err = svc_create_xprt(serv, "tcp", nlm_tcpport,
- SVC_SOCK_DEFAULTS);
- else
- svc_xprt_put(xprt);
- }
- if (err >= 0) {
- warned = 0;
- err = 0;
- } else if (warned++ == 0)
+ err = create_lockd_listener(serv, "udp", nlm_udpport);
+ if (err < 0)
+ goto out_err;
+
+ err = create_lockd_listener(serv, "tcp", nlm_tcpport);
+ if (err < 0)
+ goto out_err;
+
+ warned = 0;
+ return 0;
+
+out_err:
+ if (warned++ == 0)
printk(KERN_WARNING
- "lockd_up: makesock failed, error=%d\n", err);
+ "lockd_up: makesock failed, error=%d\n", err);
return err;
}
@@ -252,7 +274,7 @@ int lockd_up(void)
"lockd_up: no pid, %d users??\n", nlmsvc_users);
error = -ENOMEM;
- serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, AF_INET, NULL);
+ serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, nlmsvc_family, NULL);
if (!serv) {
printk(KERN_WARNING "lockd_up: create service failed\n");
goto out;
@@ -276,6 +298,7 @@ int lockd_up(void)
}
svc_sock_update_bufs(serv);
+ serv->sv_maxconn = nlm_max_connections;
nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, serv->sv_name);
if (IS_ERR(nlmsvc_task)) {
@@ -485,6 +508,7 @@ module_param_call(nlm_udpport, param_set_port, param_get_int,
module_param_call(nlm_tcpport, param_set_port, param_get_int,
&nlm_tcpport, 0644);
module_param(nsm_use_hostnames, bool, 0644);
+module_param(nlm_max_connections, uint, 0644);
/*
* Initialising and terminating the module.
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 4dfdcbc6bf6..1725037374c 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -16,8 +16,6 @@
#include <linux/nfsd/nfsd.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/share.h>
-#include <linux/lockd/sm_inter.h>
-
#define NLMDBG_FACILITY NLMDBG_CLIENT
@@ -419,8 +417,6 @@ static __be32
nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
void *resp)
{
- struct sockaddr_in saddr;
-
dprintk("lockd: SM_NOTIFY called\n");
if (!nlm_privileged_requester(rqstp)) {
@@ -430,14 +426,7 @@ nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
return rpc_system_err;
}
- /* Obtain the host pointer for this NFS server and try to
- * reclaim all locks we hold on this server.
- */
- memset(&saddr, 0, sizeof(saddr));
- saddr.sin_family = AF_INET;
- saddr.sin_addr.s_addr = argp->addr;
- nlm_host_rebooted(&saddr, argp->mon, argp->len, argp->state);
-
+ nlm_host_rebooted(argp);
return rpc_success;
}
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 3ca89e2a938..3688e55901f 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -16,8 +16,6 @@
#include <linux/nfsd/nfsd.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/share.h>
-#include <linux/lockd/sm_inter.h>
-
#define NLMDBG_FACILITY NLMDBG_CLIENT
@@ -451,8 +449,6 @@ static __be32
nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
void *resp)
{
- struct sockaddr_in saddr;
-
dprintk("lockd: SM_NOTIFY called\n");
if (!nlm_privileged_requester(rqstp)) {
@@ -462,14 +458,7 @@ nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
return rpc_system_err;
}
- /* Obtain the host pointer for this NFS server and try to
- * reclaim all locks we hold on this server.
- */
- memset(&saddr, 0, sizeof(saddr));
- saddr.sin_family = AF_INET;
- saddr.sin_addr.s_addr = argp->addr;
- nlm_host_rebooted(&saddr, argp->mon, argp->len, argp->state);
-
+ nlm_host_rebooted(argp);
return rpc_success;
}
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 34c2766e27c..9e4d6aab611 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -17,7 +17,6 @@
#include <linux/nfsd/export.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/share.h>
-#include <linux/lockd/sm_inter.h>
#include <linux/module.h>
#include <linux/mount.h>
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 1f226290c67..0336f2beacd 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -16,7 +16,6 @@
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/stats.h>
#include <linux/lockd/lockd.h>
-#include <linux/lockd/sm_inter.h>
#define NLMDBG_FACILITY NLMDBG_XDR
@@ -349,8 +348,8 @@ nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp)
if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
return 0;
argp->state = ntohl(*p++);
- /* Preserve the address in network byte order */
- argp->addr = *p++;
+ memcpy(&argp->priv.data, p, sizeof(argp->priv.data));
+ p += XDR_QUADLEN(SM_PRIV_SIZE);
return xdr_argsize_check(rqstp, p);
}
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index 50c493a8ad8..e1d52865319 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -17,7 +17,6 @@
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/stats.h>
#include <linux/lockd/lockd.h>
-#include <linux/lockd/sm_inter.h>
#define NLMDBG_FACILITY NLMDBG_XDR
@@ -356,8 +355,8 @@ nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp
if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
return 0;
argp->state = ntohl(*p++);
- /* Preserve the address in network byte order */
- argp->addr = *p++;
+ memcpy(&argp->priv.data, p, sizeof(argp->priv.data));
+ p += XDR_QUADLEN(SM_PRIV_SIZE);
return xdr_argsize_check(rqstp, p);
}
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index f70433816a3..d4946c4c90e 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -280,7 +280,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
return -EINVAL;
got_it:
- pos = (page->index >> PAGE_CACHE_SHIFT) + p - (char*)page_address(page);
+ pos = page_offset(page) + p - (char *)page_address(page);
err = __minix_write_begin(NULL, page->mapping, pos, sbi->s_dirsize,
AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
if (err)
diff --git a/fs/mpage.c b/fs/mpage.c
index 552b80b3fac..16c3ef37eae 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -241,7 +241,6 @@ do_mpage_readpage(struct bio *bio, struct page *page, unsigned nr_pages,
first_hole = page_block;
page_block++;
block_in_file++;
- clear_buffer_mapped(map_bh);
continue;
}
@@ -308,7 +307,10 @@ alloc_new:
goto alloc_new;
}
- if (buffer_boundary(map_bh) || (first_hole != blocks_per_page))
+ relative_block = block_in_file - *first_logical_block;
+ nblocks = map_bh->b_size >> blkbits;
+ if ((buffer_boundary(map_bh) && relative_block == nblocks) ||
+ (first_hole != blocks_per_page))
bio = mpage_bio_submit(READ, bio);
else
*last_block_in_bio = blocks[blocks_per_page - 1];
diff --git a/fs/namei.c b/fs/namei.c
index df2d3df4f04..f05bed24242 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -257,7 +257,7 @@ int inode_permission(struct inode *inode, int mask)
return -EACCES;
}
- if (inode->i_op && inode->i_op->permission)
+ if (inode->i_op->permission)
retval = inode->i_op->permission(inode, mask);
else
retval = generic_permission(inode, mask, NULL);
@@ -432,7 +432,7 @@ static int exec_permission_lite(struct inode *inode)
{
umode_t mode = inode->i_mode;
- if (inode->i_op && inode->i_op->permission)
+ if (inode->i_op->permission)
return -EAGAIN;
if (current_fsuid() == inode->i_uid)
@@ -908,9 +908,6 @@ static int __link_path_walk(const char *name, struct nameidata *nd)
inode = next.dentry->d_inode;
if (!inode)
goto out_dput;
- err = -ENOTDIR;
- if (!inode->i_op)
- goto out_dput;
if (inode->i_op->follow_link) {
err = do_follow_link(&next, nd);
@@ -920,9 +917,6 @@ static int __link_path_walk(const char *name, struct nameidata *nd)
inode = nd->path.dentry->d_inode;
if (!inode)
break;
- err = -ENOTDIR;
- if (!inode->i_op)
- break;
} else
path_to_nameidata(&next, nd);
err = -ENOTDIR;
@@ -961,7 +955,7 @@ last_component:
break;
inode = next.dentry->d_inode;
if ((lookup_flags & LOOKUP_FOLLOW)
- && inode && inode->i_op && inode->i_op->follow_link) {
+ && inode && inode->i_op->follow_link) {
err = do_follow_link(&next, nd);
if (err)
goto return_err;
@@ -973,7 +967,7 @@ last_component:
break;
if (lookup_flags & LOOKUP_DIRECTORY) {
err = -ENOTDIR;
- if (!inode->i_op || !inode->i_op->lookup)
+ if (!inode->i_op->lookup)
break;
}
goto return_base;
@@ -1469,7 +1463,7 @@ int vfs_create(struct inode *dir, struct dentry *dentry, int mode,
if (error)
return error;
- if (!dir->i_op || !dir->i_op->create)
+ if (!dir->i_op->create)
return -EACCES; /* shouldn't it be ENOSYS? */
mode &= S_IALLUGO;
mode |= S_IFREG;
@@ -1752,7 +1746,7 @@ do_last:
error = -ENOENT;
if (!path.dentry->d_inode)
goto exit_dput;
- if (path.dentry->d_inode->i_op && path.dentry->d_inode->i_op->follow_link)
+ if (path.dentry->d_inode->i_op->follow_link)
goto do_link;
path_to_nameidata(&path, &nd);
@@ -1933,7 +1927,7 @@ int vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
if ((S_ISCHR(mode) || S_ISBLK(mode)) && !capable(CAP_MKNOD))
return -EPERM;
- if (!dir->i_op || !dir->i_op->mknod)
+ if (!dir->i_op->mknod)
return -EPERM;
error = devcgroup_inode_mknod(mode, dev);
@@ -2035,7 +2029,7 @@ int vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (error)
return error;
- if (!dir->i_op || !dir->i_op->mkdir)
+ if (!dir->i_op->mkdir)
return -EPERM;
mode &= (S_IRWXUGO|S_ISVTX);
@@ -2126,7 +2120,7 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
if (error)
return error;
- if (!dir->i_op || !dir->i_op->rmdir)
+ if (!dir->i_op->rmdir)
return -EPERM;
DQUOT_INIT(dir);
@@ -2213,7 +2207,7 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
if (error)
return error;
- if (!dir->i_op || !dir->i_op->unlink)
+ if (!dir->i_op->unlink)
return -EPERM;
DQUOT_INIT(dir);
@@ -2320,7 +2314,7 @@ int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)
if (error)
return error;
- if (!dir->i_op || !dir->i_op->symlink)
+ if (!dir->i_op->symlink)
return -EPERM;
error = security_inode_symlink(dir, dentry, oldname);
@@ -2401,7 +2395,7 @@ int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_de
*/
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return -EPERM;
- if (!dir->i_op || !dir->i_op->link)
+ if (!dir->i_op->link)
return -EPERM;
if (S_ISDIR(inode->i_mode))
return -EPERM;
@@ -2608,7 +2602,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (error)
return error;
- if (!old_dir->i_op || !old_dir->i_op->rename)
+ if (!old_dir->i_op->rename)
return -EPERM;
DQUOT_INIT(old_dir);
diff --git a/fs/ncpfs/getopt.c b/fs/ncpfs/getopt.c
index 335b003dddf..0af3349de85 100644
--- a/fs/ncpfs/getopt.c
+++ b/fs/ncpfs/getopt.c
@@ -16,7 +16,6 @@
* @opts: an array of &struct option entries controlling parser operations
* @optopt: output; will contain the current option
* @optarg: output; will contain the value (if one exists)
- * @flag: output; may be NULL; should point to a long for or'ing flags
* @value: output; may be NULL; will be overwritten with the integer value
* of the current argument.
*
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 6d04e050c74..f54360f50a9 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -98,7 +98,7 @@ struct compat_ncp_objectname_ioctl
{
s32 auth_type;
u32 object_name_len;
- compat_caddr_t object_name; /* an userspace data, in most cases user name */
+ compat_caddr_t object_name; /* a userspace data, in most cases user name */
};
struct compat_ncp_fs_info_v2 {
diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index 0184fe9b514..c903e04aa21 100644
--- a/fs/nfsd/auth.c
+++ b/fs/nfsd/auth.c
@@ -76,10 +76,10 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
ret = set_groups(new, gi);
put_group_info(gi);
- if (!ret)
+ if (ret < 0)
goto error;
- if (new->uid)
+ if (new->fsuid)
new->cap_effective = cap_drop_nfsd_set(new->cap_effective);
else
new->cap_effective = cap_raise_nfsd_set(new->cap_effective,
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 6d7d8c02c19..c464181b599 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -53,9 +53,6 @@
#define NFSPROC4_CB_NULL 0
#define NFSPROC4_CB_COMPOUND 1
-/* declarations */
-static const struct rpc_call_ops nfs4_cb_null_ops;
-
/* Index of predefined Linux callback client operations */
enum {
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 669461e291a..9fa60a3ad48 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -946,6 +946,11 @@ encode_op:
nfsd4_encode_operation(resp, op);
status = op->status;
}
+
+ dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
+ args->ops, args->opcnt, resp->opcnt, op->opnum,
+ be32_to_cpu(status));
+
if (cstate->replay_owner) {
nfs4_put_stateowner(cstate->replay_owner);
cstate->replay_owner = NULL;
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 0f9d6efaa62..74f7b67567f 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -116,9 +116,9 @@ nfs4_make_rec_clidname(char *dname, struct xdr_netobj *clname)
md5_to_hex(dname, cksum.data);
- kfree(cksum.data);
status = nfs_ok;
out:
+ kfree(cksum.data);
crypto_free_hash(desc.tfm);
out_no_tfm:
return status;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 13e0e074dbb..88db7d3ec12 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2416,6 +2416,26 @@ out:
#define LOCK_HASH_SIZE (1 << LOCK_HASH_BITS)
#define LOCK_HASH_MASK (LOCK_HASH_SIZE - 1)
+static inline u64
+end_offset(u64 start, u64 len)
+{
+ u64 end;
+
+ end = start + len;
+ return end >= start ? end: NFS4_MAX_UINT64;
+}
+
+/* last octet in a range */
+static inline u64
+last_byte_offset(u64 start, u64 len)
+{
+ u64 end;
+
+ BUG_ON(!len);
+ end = start + len;
+ return end > start ? end - 1: NFS4_MAX_UINT64;
+}
+
#define lockownerid_hashval(id) \
((id) & LOCK_HASH_MASK)
@@ -2435,13 +2455,13 @@ static struct list_head lockstateid_hashtbl[STATEID_HASH_SIZE];
static struct nfs4_stateid *
find_stateid(stateid_t *stid, int flags)
{
- struct nfs4_stateid *local = NULL;
+ struct nfs4_stateid *local;
u32 st_id = stid->si_stateownerid;
u32 f_id = stid->si_fileid;
unsigned int hashval;
dprintk("NFSD: find_stateid flags 0x%x\n",flags);
- if ((flags & LOCK_STATE) || (flags & RD_STATE) || (flags & WR_STATE)) {
+ if (flags & (LOCK_STATE | RD_STATE | WR_STATE)) {
hashval = stateid_hashval(st_id, f_id);
list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
if ((local->st_stateid.si_stateownerid == st_id) &&
@@ -2449,7 +2469,8 @@ find_stateid(stateid_t *stid, int flags)
return local;
}
}
- if ((flags & OPEN_STATE) || (flags & RD_STATE) || (flags & WR_STATE)) {
+
+ if (flags & (OPEN_STATE | RD_STATE | WR_STATE)) {
hashval = stateid_hashval(st_id, f_id);
list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
if ((local->st_stateid.si_stateownerid == st_id) &&
@@ -2518,8 +2539,8 @@ nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
deny->ld_clientid.cl_id = 0;
}
deny->ld_start = fl->fl_start;
- deny->ld_length = ~(u64)0;
- if (fl->fl_end != ~(u64)0)
+ deny->ld_length = NFS4_MAX_UINT64;
+ if (fl->fl_end != NFS4_MAX_UINT64)
deny->ld_length = fl->fl_end - fl->fl_start + 1;
deny->ld_type = NFS4_READ_LT;
if (fl->fl_type != F_RDLCK)
@@ -2616,7 +2637,7 @@ out:
static int
check_lock_length(u64 offset, u64 length)
{
- return ((length == 0) || ((length != ~(u64)0) &&
+ return ((length == 0) || ((length != NFS4_MAX_UINT64) &&
LOFF_OVERFLOW(offset, length)));
}
@@ -2736,11 +2757,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
file_lock.fl_lmops = &nfsd_posix_mng_ops;
file_lock.fl_start = lock->lk_offset;
- if ((lock->lk_length == ~(u64)0) ||
- LOFF_OVERFLOW(lock->lk_offset, lock->lk_length))
- file_lock.fl_end = ~(u64)0;
- else
- file_lock.fl_end = lock->lk_offset + lock->lk_length - 1;
+ file_lock.fl_end = last_byte_offset(lock->lk_offset, lock->lk_length);
nfs4_transform_lock_offset(&file_lock);
/*
@@ -2781,6 +2798,25 @@ out:
}
/*
+ * The NFSv4 spec allows a client to do a LOCKT without holding an OPEN,
+ * so we do a temporary open here just to get an open file to pass to
+ * vfs_test_lock. (Arguably perhaps test_lock should be done with an
+ * inode operation.)
+ */
+static int nfsd_test_lock(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file_lock *lock)
+{
+ struct file *file;
+ int err;
+
+ err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file);
+ if (err)
+ return err;
+ err = vfs_test_lock(file, lock);
+ nfsd_close(file);
+ return err;
+}
+
+/*
* LOCKT operation
*/
__be32
@@ -2788,7 +2824,6 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_lockt *lockt)
{
struct inode *inode;
- struct file file;
struct file_lock file_lock;
int error;
__be32 status;
@@ -2839,23 +2874,12 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
file_lock.fl_lmops = &nfsd_posix_mng_ops;
file_lock.fl_start = lockt->lt_offset;
- if ((lockt->lt_length == ~(u64)0) || LOFF_OVERFLOW(lockt->lt_offset, lockt->lt_length))
- file_lock.fl_end = ~(u64)0;
- else
- file_lock.fl_end = lockt->lt_offset + lockt->lt_length - 1;
+ file_lock.fl_end = last_byte_offset(lockt->lt_offset, lockt->lt_length);
nfs4_transform_lock_offset(&file_lock);
- /* vfs_test_lock uses the struct file _only_ to resolve the inode.
- * since LOCKT doesn't require an OPEN, and therefore a struct
- * file may not exist, pass vfs_test_lock a struct file with
- * only the dentry:inode set.
- */
- memset(&file, 0, sizeof (struct file));
- file.f_path.dentry = cstate->current_fh.fh_dentry;
-
status = nfs_ok;
- error = vfs_test_lock(&file, &file_lock);
+ error = nfsd_test_lock(rqstp, &cstate->current_fh, &file_lock);
if (error) {
status = nfserrno(error);
goto out;
@@ -2906,10 +2930,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
file_lock.fl_lmops = &nfsd_posix_mng_ops;
file_lock.fl_start = locku->lu_offset;
- if ((locku->lu_length == ~(u64)0) || LOFF_OVERFLOW(locku->lu_offset, locku->lu_length))
- file_lock.fl_end = ~(u64)0;
- else
- file_lock.fl_end = locku->lu_offset + locku->lu_length - 1;
+ file_lock.fl_end = last_byte_offset(locku->lu_offset, locku->lu_length);
nfs4_transform_lock_offset(&file_lock);
/*
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index afcdf4b7684..f65953be39c 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1,6 +1,4 @@
/*
- * fs/nfs/nfs4xdr.c
- *
* Server-side XDR for NFSv4
*
* Copyright (c) 2002 The Regents of the University of Michigan.
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 77d7b8c531a..3d93b2064ce 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -84,6 +84,8 @@ static ssize_t write_unexport(struct file *file, char *buf, size_t size);
static ssize_t write_getfd(struct file *file, char *buf, size_t size);
static ssize_t write_getfs(struct file *file, char *buf, size_t size);
static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
+static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
+static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
static ssize_t write_threads(struct file *file, char *buf, size_t size);
static ssize_t write_pool_threads(struct file *file, char *buf, size_t size);
static ssize_t write_versions(struct file *file, char *buf, size_t size);
@@ -94,9 +96,6 @@ static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
#endif
-static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size);
-static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size);
-
static ssize_t (*write_op[])(struct file *, char *, size_t) = {
[NFSD_Svc] = write_svc,
[NFSD_Add] = write_add,
@@ -106,8 +105,8 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = {
[NFSD_Getfd] = write_getfd,
[NFSD_Getfs] = write_getfs,
[NFSD_Fh] = write_filehandle,
- [NFSD_FO_UnlockIP] = failover_unlock_ip,
- [NFSD_FO_UnlockFS] = failover_unlock_fs,
+ [NFSD_FO_UnlockIP] = write_unlock_ip,
+ [NFSD_FO_UnlockFS] = write_unlock_fs,
[NFSD_Threads] = write_threads,
[NFSD_Pool_Threads] = write_pool_threads,
[NFSD_Versions] = write_versions,
@@ -176,10 +175,24 @@ static const struct file_operations exports_operations = {
/*----------------------------------------------------------------------------*/
/*
* payload - write methods
- * If the method has a response, the response should be put in buf,
- * and the length returned. Otherwise return 0 or and -error.
*/
+/**
+ * write_svc - Start kernel's NFSD server
+ *
+ * Deprecated. /proc/fs/nfsd/threads is preferred.
+ * Function remains to support old versions of nfs-utils.
+ *
+ * Input:
+ * buf: struct nfsctl_svc
+ * svc_port: port number of this
+ * server's listener
+ * svc_nthreads: number of threads to start
+ * size: size in bytes of passed in nfsctl_svc
+ * Output:
+ * On success: returns zero
+ * On error: return code is negative errno value
+ */
static ssize_t write_svc(struct file *file, char *buf, size_t size)
{
struct nfsctl_svc *data;
@@ -189,6 +202,30 @@ static ssize_t write_svc(struct file *file, char *buf, size_t size)
return nfsd_svc(data->svc_port, data->svc_nthreads);
}
+/**
+ * write_add - Add or modify client entry in auth unix cache
+ *
+ * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
+ * Function remains to support old versions of nfs-utils.
+ *
+ * Input:
+ * buf: struct nfsctl_client
+ * cl_ident: '\0'-terminated C string
+ * containing domain name
+ * of client
+ * cl_naddr: no. of items in cl_addrlist
+ * cl_addrlist: array of client addresses
+ * cl_fhkeytype: ignored
+ * cl_fhkeylen: ignored
+ * cl_fhkey: ignored
+ * size: size in bytes of passed in nfsctl_client
+ * Output:
+ * On success: returns zero
+ * On error: return code is negative errno value
+ *
+ * Note: Only AF_INET client addresses are passed in, since
+ * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
+ */
static ssize_t write_add(struct file *file, char *buf, size_t size)
{
struct nfsctl_client *data;
@@ -198,6 +235,30 @@ static ssize_t write_add(struct file *file, char *buf, size_t size)
return exp_addclient(data);
}
+/**
+ * write_del - Remove client from auth unix cache
+ *
+ * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
+ * Function remains to support old versions of nfs-utils.
+ *
+ * Input:
+ * buf: struct nfsctl_client
+ * cl_ident: '\0'-terminated C string
+ * containing domain name
+ * of client
+ * cl_naddr: ignored
+ * cl_addrlist: ignored
+ * cl_fhkeytype: ignored
+ * cl_fhkeylen: ignored
+ * cl_fhkey: ignored
+ * size: size in bytes of passed in nfsctl_client
+ * Output:
+ * On success: returns zero
+ * On error: return code is negative errno value
+ *
+ * Note: Only AF_INET client addresses are passed in, since
+ * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
+ */
static ssize_t write_del(struct file *file, char *buf, size_t size)
{
struct nfsctl_client *data;
@@ -207,6 +268,33 @@ static ssize_t write_del(struct file *file, char *buf, size_t size)
return exp_delclient(data);
}
+/**
+ * write_export - Export part or all of a local file system
+ *
+ * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
+ * Function remains to support old versions of nfs-utils.
+ *
+ * Input:
+ * buf: struct nfsctl_export
+ * ex_client: '\0'-terminated C string
+ * containing domain name
+ * of client allowed to access
+ * this export
+ * ex_path: '\0'-terminated C string
+ * containing pathname of
+ * directory in local file system
+ * ex_dev: fsid to use for this export
+ * ex_ino: ignored
+ * ex_flags: export flags for this export
+ * ex_anon_uid: UID to use for anonymous
+ * requests
+ * ex_anon_gid: GID to use for anonymous
+ * requests
+ * size: size in bytes of passed in nfsctl_export
+ * Output:
+ * On success: returns zero
+ * On error: return code is negative errno value
+ */
static ssize_t write_export(struct file *file, char *buf, size_t size)
{
struct nfsctl_export *data;
@@ -216,6 +304,31 @@ static ssize_t write_export(struct file *file, char *buf, size_t size)
return exp_export(data);
}
+/**
+ * write_unexport - Unexport a previously exported file system
+ *
+ * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
+ * Function remains to support old versions of nfs-utils.
+ *
+ * Input:
+ * buf: struct nfsctl_export
+ * ex_client: '\0'-terminated C string
+ * containing domain name
+ * of client no longer allowed
+ * to access this export
+ * ex_path: '\0'-terminated C string
+ * containing pathname of
+ * directory in local file system
+ * ex_dev: ignored
+ * ex_ino: ignored
+ * ex_flags: ignored
+ * ex_anon_uid: ignored
+ * ex_anon_gid: ignored
+ * size: size in bytes of passed in nfsctl_export
+ * Output:
+ * On success: returns zero
+ * On error: return code is negative errno value
+ */
static ssize_t write_unexport(struct file *file, char *buf, size_t size)
{
struct nfsctl_export *data;
@@ -226,6 +339,30 @@ static ssize_t write_unexport(struct file *file, char *buf, size_t size)
return exp_unexport(data);
}
+/**
+ * write_getfs - Get a variable-length NFS file handle by path
+ *
+ * Deprecated. /proc/fs/nfsd/filehandle is preferred.
+ * Function remains to support old versions of nfs-utils.
+ *
+ * Input:
+ * buf: struct nfsctl_fsparm
+ * gd_addr: socket address of client
+ * gd_path: '\0'-terminated C string
+ * containing pathname of
+ * directory in local file system
+ * gd_maxlen: maximum size of returned file
+ * handle
+ * size: size in bytes of passed in nfsctl_fsparm
+ * Output:
+ * On success: passed-in buffer filled with a knfsd_fh structure
+ * (a variable-length raw NFS file handle);
+ * return code is the size in bytes of the file handle
+ * On error: return code is negative errno value
+ *
+ * Note: Only AF_INET client addresses are passed in, since gd_addr
+ * is the same size as a struct sockaddr_in.
+ */
static ssize_t write_getfs(struct file *file, char *buf, size_t size)
{
struct nfsctl_fsparm *data;
@@ -265,6 +402,29 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size)
return err;
}
+/**
+ * write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
+ *
+ * Deprecated. /proc/fs/nfsd/filehandle is preferred.
+ * Function remains to support old versions of nfs-utils.
+ *
+ * Input:
+ * buf: struct nfsctl_fdparm
+ * gd_addr: socket address of client
+ * gd_path: '\0'-terminated C string
+ * containing pathname of
+ * directory in local file system
+ * gd_version: fdparm structure version
+ * size: size in bytes of passed in nfsctl_fdparm
+ * Output:
+ * On success: passed-in buffer filled with nfsctl_res
+ * (a fixed-length raw NFS file handle);
+ * return code is the size in bytes of the file handle
+ * On error: return code is negative errno value
+ *
+ * Note: Only AF_INET client addresses are passed in, since gd_addr
+ * is the same size as a struct sockaddr_in.
+ */
static ssize_t write_getfd(struct file *file, char *buf, size_t size)
{
struct nfsctl_fdparm *data;
@@ -309,7 +469,23 @@ static ssize_t write_getfd(struct file *file, char *buf, size_t size)
return err;
}
-static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size)
+/**
+ * write_unlock_ip - Release all locks used by a client
+ *
+ * Experimental.
+ *
+ * Input:
+ * buf: '\n'-terminated C string containing a
+ * presentation format IPv4 address
+ * size: length of C string in @buf
+ * Output:
+ * On success: returns zero if all specified locks were released;
+ * returns one if one or more locks were not released
+ * On error: return code is negative errno value
+ *
+ * Note: Only AF_INET client addresses are passed in
+ */
+static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
{
struct sockaddr_in sin = {
.sin_family = AF_INET,
@@ -339,7 +515,21 @@ static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size)
return nlmsvc_unlock_all_by_ip((struct sockaddr *)&sin);
}
-static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
+/**
+ * write_unlock_fs - Release all locks on a local file system
+ *
+ * Experimental.
+ *
+ * Input:
+ * buf: '\n'-terminated C string containing the
+ * absolute pathname of a local file system
+ * size: length of C string in @buf
+ * Output:
+ * On success: returns zero if all specified locks were released;
+ * returns one if one or more locks were not released
+ * On error: return code is negative errno value
+ */
+static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
{
struct path path;
char *fo_path;
@@ -360,21 +550,44 @@ static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
if (error)
return error;
+ /*
+ * XXX: Needs better sanity checking. Otherwise we could end up
+ * releasing locks on the wrong file system.
+ *
+ * For example:
+ * 1. Does the path refer to a directory?
+ * 2. Is that directory a mount point, or
+ * 3. Is that directory the root of an exported file system?
+ */
error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
path_put(&path);
return error;
}
+/**
+ * write_filehandle - Get a variable-length NFS file handle by path
+ *
+ * On input, the buffer contains a '\n'-terminated C string comprised of
+ * three alphanumeric words separated by whitespace. The string may
+ * contain escape sequences.
+ *
+ * Input:
+ * buf:
+ * domain: client domain name
+ * path: export pathname
+ * maxsize: numeric maximum size of
+ * @buf
+ * size: length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing a ASCII hex text version
+ * of the NFS file handle;
+ * return code is the size in bytes of the string
+ * On error: return code is negative errno value
+ */
static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
{
- /* request is:
- * domain path maxsize
- * response is
- * filehandle
- *
- * qword quoting is used, so filehandle will be \x....
- */
char *dname, *path;
int uninitialized_var(maxsize);
char *mesg = buf;
@@ -391,11 +604,13 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
dname = mesg;
len = qword_get(&mesg, dname, size);
- if (len <= 0) return -EINVAL;
+ if (len <= 0)
+ return -EINVAL;
path = dname+len+1;
len = qword_get(&mesg, path, size);
- if (len <= 0) return -EINVAL;
+ if (len <= 0)
+ return -EINVAL;
len = get_int(&mesg, &maxsize);
if (len)
@@ -419,17 +634,43 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
if (len)
return len;
- mesg = buf; len = SIMPLE_TRANSACTION_LIMIT;
+ mesg = buf;
+ len = SIMPLE_TRANSACTION_LIMIT;
qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
mesg[-1] = '\n';
return mesg - buf;
}
+/**
+ * write_threads - Start NFSD, or report the current number of running threads
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string numeric value representing the number of
+ * running NFSD threads;
+ * return code is the size in bytes of the string
+ * On error: return code is zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing the
+ * number of NFSD threads to start
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: NFS service is started;
+ * passed-in buffer filled with '\n'-terminated C
+ * string numeric value representing the number of
+ * running NFSD threads;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_threads(struct file *file, char *buf, size_t size)
{
- /* if size > 0, look for a number of threads and call nfsd_svc
- * then write out number of threads as reply
- */
char *mesg = buf;
int rv;
if (size > 0) {
@@ -437,9 +678,9 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
rv = get_int(&mesg, &newthreads);
if (rv)
return rv;
- if (newthreads <0)
+ if (newthreads < 0)
return -EINVAL;
- rv = nfsd_svc(2049, newthreads);
+ rv = nfsd_svc(NFS_PORT, newthreads);
if (rv)
return rv;
}
@@ -447,6 +688,28 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
return strlen(buf);
}
+/**
+ * write_pool_threads - Set or report the current number of threads per pool
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing whitespace-
+ * separated unsigned integer values
+ * representing the number of NFSD
+ * threads to start in each pool
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing integer values representing the
+ * number of NFSD threads in each pool;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
{
/* if size > 0, look for an array of number of threads per node
@@ -517,10 +780,6 @@ out_free:
static ssize_t __write_versions(struct file *file, char *buf, size_t size)
{
- /*
- * Format:
- * [-/+]vers [-/+]vers ...
- */
char *mesg = buf;
char *vers, sign;
int len, num;
@@ -578,6 +837,38 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
return len;
}
+/**
+ * write_versions - Set or report the available NFS protocol versions
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing positive or negative integer
+ * values representing the current status of each
+ * protocol version;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing whitespace-
+ * separated positive or negative
+ * integer values representing NFS
+ * protocol versions to enable ("+n")
+ * or disable ("-n")
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: status of zero or more protocol versions has
+ * been updated; passed-in buffer filled with
+ * '\n'-terminated C string containing positive
+ * or negative integer values representing the
+ * current status of each protocol version;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_versions(struct file *file, char *buf, size_t size)
{
ssize_t rv;
@@ -687,6 +978,75 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
return -EINVAL;
}
+/**
+ * write_ports - Pass a socket file descriptor or transport name to listen on
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ * Output:
+ * On success: passed-in buffer filled with a '\n'-terminated C
+ * string containing a whitespace-separated list of
+ * named NFSD listeners;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing a bound
+ * but unconnected socket that is to be
+ * used as an NFSD listener
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: NFS service is started;
+ * passed-in buffer filled with a '\n'-terminated C
+ * string containing a unique alphanumeric name of
+ * the listener;
+ * return code is the size in bytes of the string
+ * On error: return code is a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing a "-" followed
+ * by an integer value representing a
+ * previously passed in socket file
+ * descriptor
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: NFS service no longer listens on that socket;
+ * passed-in buffer filled with a '\n'-terminated C
+ * string containing a unique name of the listener;
+ * return code is the size in bytes of the string
+ * On error: return code is a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing a transport
+ * name and an unsigned integer value
+ * representing the port to listen on,
+ * separated by whitespace
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: returns zero; NFS service is started
+ * On error: return code is a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing a "-" followed
+ * by a transport name and an unsigned
+ * integer value representing the port
+ * to listen on, separated by whitespace
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: returns zero; NFS service no longer listens
+ * on that transport
+ * On error: return code is a negative errno value
+ */
static ssize_t write_ports(struct file *file, char *buf, size_t size)
{
ssize_t rv;
@@ -700,6 +1060,27 @@ static ssize_t write_ports(struct file *file, char *buf, size_t size)
int nfsd_max_blksize;
+/**
+ * write_maxblksize - Set or report the current NFS blksize
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing the new
+ * NFS blksize
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C string
+ * containing numeric value of the current NFS blksize
+ * setting;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
@@ -752,6 +1133,27 @@ static ssize_t __write_leasetime(struct file *file, char *buf, size_t size)
return strlen(buf);
}
+/**
+ * write_leasetime - Set or report the current NFSv4 lease time
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing the new
+ * NFSv4 lease expiry time
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing unsigned integer value of the
+ * current lease expiry time;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
{
ssize_t rv;
@@ -788,6 +1190,27 @@ static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
return strlen(buf);
}
+/**
+ * write_recoverydir - Set or report the pathname of the recovery directory
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing the pathname
+ * of the directory on a local file
+ * system containing permanent NFSv4
+ * recovery data
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C string
+ * containing the current recovery pathname setting;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
{
ssize_t rv;
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index f0da7d9c3a9..9f1ca17293d 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -258,14 +258,32 @@ out:
return error;
}
-/*
- * Perform sanity checks on the dentry in a client's file handle.
+/**
+ * fh_verify - filehandle lookup and access checking
+ * @rqstp: pointer to current rpc request
+ * @fhp: filehandle to be verified
+ * @type: expected type of object pointed to by filehandle
+ * @access: type of access needed to object
+ *
+ * Look up a dentry from the on-the-wire filehandle, check the client's
+ * access to the export, and set the current task's credentials.
+ *
+ * Regardless of success or failure of fh_verify(), fh_put() should be
+ * called on @fhp when the caller is finished with the filehandle.
*
- * Note that the file handle dentry may need to be freed even after
- * an error return.
+ * fh_verify() may be called multiple times on a given filehandle, for
+ * example, when processing an NFSv4 compound. The first call will look
+ * up a dentry using the on-the-wire filehandle. Subsequent calls will
+ * skip the lookup and just perform the other checks and possibly change
+ * the current task's credentials.
*
- * This is only called at the start of an nfsproc call, so fhp points to
- * a svc_fh which is all 0 except for the over-the-wire file handle.
+ * @type specifies the type of object expected using one of the S_IF*
+ * constants defined in include/linux/stat.h. The caller may use zero
+ * to indicate that it doesn't care, or a negative integer to indicate
+ * that it expects something not of the given type.
+ *
+ * @access is formed from the NFSD_MAY_* constants defined in
+ * include/linux/nfsd/nfsd.h.
*/
__be32
fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
@@ -466,6 +484,8 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
goto retry;
break;
}
+ } else if (exp->ex_flags & NFSEXP_FSID) {
+ fsid_type = FSID_NUM;
} else if (exp->ex_uuid) {
if (fhp->fh_maxsize >= 64) {
if (root_export)
@@ -478,9 +498,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
else
fsid_type = FSID_UUID4_INUM;
}
- } else if (exp->ex_flags & NFSEXP_FSID)
- fsid_type = FSID_NUM;
- else if (!old_valid_dev(ex_dev))
+ } else if (!old_valid_dev(ex_dev))
/* for newer device numbers, we must use a newer fsid format */
fsid_type = FSID_ENCODE_DEV;
else
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 5cffeca7ace..6f7f2635122 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -622,6 +622,7 @@ nfserrno (int errno)
{ nfserr_badname, -ESRCH },
{ nfserr_io, -ETXTBSY },
{ nfserr_notsupp, -EOPNOTSUPP },
+ { nfserr_toosmall, -ETOOSMALL },
};
int i;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d1c5f787b36..6e50aaa56ca 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -764,7 +764,6 @@ static inline int nfsd_dosync(struct file *filp, struct dentry *dp,
return err;
}
-
static int
nfsd_sync(struct file *filp)
@@ -1211,7 +1210,7 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
dirp = dentry->d_inode;
err = nfserr_notdir;
- if(!dirp->i_op || !dirp->i_op->lookup)
+ if (!dirp->i_op->lookup)
goto out;
/*
* Check whether the response file handle has been verified yet.
@@ -1347,7 +1346,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
/* Get all the sanity checks out of the way before
* we lock the parent. */
err = nfserr_notdir;
- if(!dirp->i_op || !dirp->i_op->lookup)
+ if (!dirp->i_op->lookup)
goto out;
fh_lock_nested(fhp, I_MUTEX_PARENT);
@@ -1482,7 +1481,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
inode = dentry->d_inode;
err = nfserr_inval;
- if (!inode->i_op || !inode->i_op->readlink)
+ if (!inode->i_op->readlink)
goto out;
touch_atime(fhp->fh_export->ex_path.mnt, dentry);
@@ -2162,7 +2161,7 @@ nfsd_set_posix_acl(struct svc_fh *fhp, int type, struct posix_acl *acl)
size_t size;
int error;
- if (!IS_POSIXACL(inode) || !inode->i_op ||
+ if (!IS_POSIXACL(inode) ||
!inode->i_op->setxattr || !inode->i_op->removexattr)
return -EOPNOTSUPP;
switch(type) {
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 400f8064a54..81b8644b013 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -704,7 +704,7 @@ fput_and_out:
return ret;
}
-asmlinkage long sys_inotify_rm_watch(int fd, u32 wd)
+asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd)
{
struct file *filp;
struct inotify_device *dev;
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index e9da092e277..86bef156cf0 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -1406,9 +1406,6 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi)
ni->allocated_size = sle64_to_cpu(
a->data.non_resident.allocated_size);
}
- /* Setup the operations for this attribute inode. */
- vi->i_op = NULL;
- vi->i_fop = NULL;
if (NInoMstProtected(ni))
vi->i_mapping->a_ops = &ntfs_mst_aops;
else
diff --git a/fs/ocfs2/Makefile b/fs/ocfs2/Makefile
index 589dcdfdfe3..01596079dd6 100644
--- a/fs/ocfs2/Makefile
+++ b/fs/ocfs2/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_OCFS2_FS_USERSPACE_CLUSTER) += ocfs2_stack_user.o
ocfs2-objs := \
alloc.o \
aops.o \
+ blockcheck.o \
buffer_head_io.o \
dcache.o \
dir.o \
@@ -35,8 +36,14 @@ ocfs2-objs := \
sysfile.o \
uptodate.o \
ver.o \
+ quota_local.o \
+ quota_global.o \
xattr.o
+ifeq ($(CONFIG_OCFS2_FS_POSIX_ACL),y)
+ocfs2-objs += acl.o
+endif
+
ocfs2_stackglue-objs := stackglue.o
ocfs2_stack_o2cb-objs := stack_o2cb.o
ocfs2_stack_user-objs := stack_user.o
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
new file mode 100644
index 00000000000..12dfb44c22e
--- /dev/null
+++ b/fs/ocfs2/acl.c
@@ -0,0 +1,479 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * acl.c
+ *
+ * Copyright (C) 2004, 2008 Oracle. All rights reserved.
+ *
+ * CREDITS:
+ * Lots of code in this file is copy from linux/fs/ext3/acl.c.
+ * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/string.h>
+
+#define MLOG_MASK_PREFIX ML_INODE
+#include <cluster/masklog.h>
+
+#include "ocfs2.h"
+#include "alloc.h"
+#include "dlmglue.h"
+#include "file.h"
+#include "ocfs2_fs.h"
+
+#include "xattr.h"
+#include "acl.h"
+
+/*
+ * Convert from xattr value to acl struct.
+ */
+static struct posix_acl *ocfs2_acl_from_xattr(const void *value, size_t size)
+{
+ int n, count;
+ struct posix_acl *acl;
+
+ if (!value)
+ return NULL;
+ if (size < sizeof(struct posix_acl_entry))
+ return ERR_PTR(-EINVAL);
+
+ count = size / sizeof(struct posix_acl_entry);
+ if (count < 0)
+ return ERR_PTR(-EINVAL);
+ if (count == 0)
+ return NULL;
+
+ acl = posix_acl_alloc(count, GFP_NOFS);
+ if (!acl)
+ return ERR_PTR(-ENOMEM);
+ for (n = 0; n < count; n++) {
+ struct ocfs2_acl_entry *entry =
+ (struct ocfs2_acl_entry *)value;
+
+ acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag);
+ acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
+ acl->a_entries[n].e_id = le32_to_cpu(entry->e_id);
+ value += sizeof(struct posix_acl_entry);
+
+ }
+ return acl;
+}
+
+/*
+ * Convert acl struct to xattr value.
+ */
+static void *ocfs2_acl_to_xattr(const struct posix_acl *acl, size_t *size)
+{
+ struct ocfs2_acl_entry *entry = NULL;
+ char *ocfs2_acl;
+ size_t n;
+
+ *size = acl->a_count * sizeof(struct posix_acl_entry);
+
+ ocfs2_acl = kmalloc(*size, GFP_NOFS);
+ if (!ocfs2_acl)
+ return ERR_PTR(-ENOMEM);
+
+ entry = (struct ocfs2_acl_entry *)ocfs2_acl;
+ for (n = 0; n < acl->a_count; n++, entry++) {
+ entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
+ entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
+ entry->e_id = cpu_to_le32(acl->a_entries[n].e_id);
+ }
+ return ocfs2_acl;
+}
+
+static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode,
+ int type,
+ struct buffer_head *di_bh)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ int name_index;
+ char *value = NULL;
+ struct posix_acl *acl;
+ int retval;
+
+ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
+ return NULL;
+
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;
+ break;
+ case ACL_TYPE_DEFAULT:
+ name_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;
+ break;
+ default:
+ return ERR_PTR(-EINVAL);
+ }
+
+ retval = ocfs2_xattr_get_nolock(inode, di_bh, name_index, "", NULL, 0);
+ if (retval > 0) {
+ value = kmalloc(retval, GFP_NOFS);
+ if (!value)
+ return ERR_PTR(-ENOMEM);
+ retval = ocfs2_xattr_get_nolock(inode, di_bh, name_index,
+ "", value, retval);
+ }
+
+ if (retval > 0)
+ acl = ocfs2_acl_from_xattr(value, retval);
+ else if (retval == -ENODATA || retval == 0)
+ acl = NULL;
+ else
+ acl = ERR_PTR(retval);
+
+ kfree(value);
+
+ return acl;
+}
+
+
+/*
+ * Get posix acl.
+ */
+static struct posix_acl *ocfs2_get_acl(struct inode *inode, int type)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct buffer_head *di_bh = NULL;
+ struct posix_acl *acl;
+ int ret;
+
+ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
+ return NULL;
+
+ ret = ocfs2_inode_lock(inode, &di_bh, 0);
+ if (ret < 0) {
+ mlog_errno(ret);
+ acl = ERR_PTR(ret);
+ return acl;
+ }
+
+ acl = ocfs2_get_acl_nolock(inode, type, di_bh);
+
+ ocfs2_inode_unlock(inode, 0);
+
+ brelse(di_bh);
+
+ return acl;
+}
+
+/*
+ * Set the access or default ACL of an inode.
+ */
+static int ocfs2_set_acl(handle_t *handle,
+ struct inode *inode,
+ struct buffer_head *di_bh,
+ int type,
+ struct posix_acl *acl,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac)
+{
+ int name_index;
+ void *value = NULL;
+ size_t size = 0;
+ int ret;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;
+ if (acl) {
+ mode_t mode = inode->i_mode;
+ ret = posix_acl_equiv_mode(acl, &mode);
+ if (ret < 0)
+ return ret;
+ else {
+ inode->i_mode = mode;
+ if (ret == 0)
+ acl = NULL;
+ }
+ }
+ break;
+ case ACL_TYPE_DEFAULT:
+ name_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;
+ if (!S_ISDIR(inode->i_mode))
+ return acl ? -EACCES : 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (acl) {
+ value = ocfs2_acl_to_xattr(acl, &size);
+ if (IS_ERR(value))
+ return (int)PTR_ERR(value);
+ }
+
+ if (handle)
+ ret = ocfs2_xattr_set_handle(handle, inode, di_bh, name_index,
+ "", value, size, 0,
+ meta_ac, data_ac);
+ else
+ ret = ocfs2_xattr_set(inode, name_index, "", value, size, 0);
+
+ kfree(value);
+
+ return ret;
+}
+
+int ocfs2_check_acl(struct inode *inode, int mask)
+{
+ struct posix_acl *acl = ocfs2_get_acl(inode, ACL_TYPE_ACCESS);
+
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ if (acl) {
+ int ret = posix_acl_permission(inode, acl, mask);
+ posix_acl_release(acl);
+ return ret;
+ }
+
+ return -EAGAIN;
+}
+
+int ocfs2_acl_chmod(struct inode *inode)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct posix_acl *acl, *clone;
+ int ret;
+
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
+ return 0;
+
+ acl = ocfs2_get_acl(inode, ACL_TYPE_ACCESS);
+ if (IS_ERR(acl) || !acl)
+ return PTR_ERR(acl);
+ clone = posix_acl_clone(acl, GFP_KERNEL);
+ posix_acl_release(acl);
+ if (!clone)
+ return -ENOMEM;
+ ret = posix_acl_chmod_masq(clone, inode->i_mode);
+ if (!ret)
+ ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS,
+ clone, NULL, NULL);
+ posix_acl_release(clone);
+ return ret;
+}
+
+/*
+ * Initialize the ACLs of a new inode. If parent directory has default ACL,
+ * then clone to new inode. Called from ocfs2_mknod.
+ */
+int ocfs2_init_acl(handle_t *handle,
+ struct inode *inode,
+ struct inode *dir,
+ struct buffer_head *di_bh,
+ struct buffer_head *dir_bh,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct posix_acl *acl = NULL;
+ int ret = 0;
+
+ if (!S_ISLNK(inode->i_mode)) {
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
+ acl = ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT,
+ dir_bh);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ }
+ if (!acl)
+ inode->i_mode &= ~current->fs->umask;
+ }
+ if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) {
+ struct posix_acl *clone;
+ mode_t mode;
+
+ if (S_ISDIR(inode->i_mode)) {
+ ret = ocfs2_set_acl(handle, inode, di_bh,
+ ACL_TYPE_DEFAULT, acl,
+ meta_ac, data_ac);
+ if (ret)
+ goto cleanup;
+ }
+ clone = posix_acl_clone(acl, GFP_NOFS);
+ ret = -ENOMEM;
+ if (!clone)
+ goto cleanup;
+
+ mode = inode->i_mode;
+ ret = posix_acl_create_masq(clone, &mode);
+ if (ret >= 0) {
+ inode->i_mode = mode;
+ if (ret > 0) {
+ ret = ocfs2_set_acl(handle, inode,
+ di_bh, ACL_TYPE_ACCESS,
+ clone, meta_ac, data_ac);
+ }
+ }
+ posix_acl_release(clone);
+ }
+cleanup:
+ posix_acl_release(acl);
+ return ret;
+}
+
+static size_t ocfs2_xattr_list_acl_access(struct inode *inode,
+ char *list,
+ size_t list_len,
+ const char *name,
+ size_t name_len)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS);
+
+ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
+ return 0;
+
+ if (list && size <= list_len)
+ memcpy(list, POSIX_ACL_XATTR_ACCESS, size);
+ return size;
+}
+
+static size_t ocfs2_xattr_list_acl_default(struct inode *inode,
+ char *list,
+ size_t list_len,
+ const char *name,
+ size_t name_len)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT);
+
+ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
+ return 0;
+
+ if (list && size <= list_len)
+ memcpy(list, POSIX_ACL_XATTR_DEFAULT, size);
+ return size;
+}
+
+static int ocfs2_xattr_get_acl(struct inode *inode,
+ int type,
+ void *buffer,
+ size_t size)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct posix_acl *acl;
+ int ret;
+
+ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
+ return -EOPNOTSUPP;
+
+ acl = ocfs2_get_acl(inode, type);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ if (acl == NULL)
+ return -ENODATA;
+ ret = posix_acl_to_xattr(acl, buffer, size);
+ posix_acl_release(acl);
+
+ return ret;
+}
+
+static int ocfs2_xattr_get_acl_access(struct inode *inode,
+ const char *name,
+ void *buffer,
+ size_t size)
+{
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
+ return ocfs2_xattr_get_acl(inode, ACL_TYPE_ACCESS, buffer, size);
+}
+
+static int ocfs2_xattr_get_acl_default(struct inode *inode,
+ const char *name,
+ void *buffer,
+ size_t size)
+{
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
+ return ocfs2_xattr_get_acl(inode, ACL_TYPE_DEFAULT, buffer, size);
+}
+
+static int ocfs2_xattr_set_acl(struct inode *inode,
+ int type,
+ const void *value,
+ size_t size)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct posix_acl *acl;
+ int ret = 0;
+
+ if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
+ return -EOPNOTSUPP;
+
+ if (!is_owner_or_cap(inode))
+ return -EPERM;
+
+ if (value) {
+ acl = posix_acl_from_xattr(value, size);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ else if (acl) {
+ ret = posix_acl_valid(acl);
+ if (ret)
+ goto cleanup;
+ }
+ } else
+ acl = NULL;
+
+ ret = ocfs2_set_acl(NULL, inode, NULL, type, acl, NULL, NULL);
+
+cleanup:
+ posix_acl_release(acl);
+ return ret;
+}
+
+static int ocfs2_xattr_set_acl_access(struct inode *inode,
+ const char *name,
+ const void *value,
+ size_t size,
+ int flags)
+{
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
+ return ocfs2_xattr_set_acl(inode, ACL_TYPE_ACCESS, value, size);
+}
+
+static int ocfs2_xattr_set_acl_default(struct inode *inode,
+ const char *name,
+ const void *value,
+ size_t size,
+ int flags)
+{
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
+ return ocfs2_xattr_set_acl(inode, ACL_TYPE_DEFAULT, value, size);
+}
+
+struct xattr_handler ocfs2_xattr_acl_access_handler = {
+ .prefix = POSIX_ACL_XATTR_ACCESS,
+ .list = ocfs2_xattr_list_acl_access,
+ .get = ocfs2_xattr_get_acl_access,
+ .set = ocfs2_xattr_set_acl_access,
+};
+
+struct xattr_handler ocfs2_xattr_acl_default_handler = {
+ .prefix = POSIX_ACL_XATTR_DEFAULT,
+ .list = ocfs2_xattr_list_acl_default,
+ .get = ocfs2_xattr_get_acl_default,
+ .set = ocfs2_xattr_set_acl_default,
+};
diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h
new file mode 100644
index 00000000000..8f6389ed4da
--- /dev/null
+++ b/fs/ocfs2/acl.h
@@ -0,0 +1,58 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * acl.h
+ *
+ * Copyright (C) 2004, 2008 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef OCFS2_ACL_H
+#define OCFS2_ACL_H
+
+#include <linux/posix_acl_xattr.h>
+
+struct ocfs2_acl_entry {
+ __le16 e_tag;
+ __le16 e_perm;
+ __le32 e_id;
+};
+
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+
+extern int ocfs2_check_acl(struct inode *, int);
+extern int ocfs2_acl_chmod(struct inode *);
+extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *,
+ struct buffer_head *, struct buffer_head *,
+ struct ocfs2_alloc_context *,
+ struct ocfs2_alloc_context *);
+
+#else /* CONFIG_OCFS2_FS_POSIX_ACL*/
+
+#define ocfs2_check_acl NULL
+static inline int ocfs2_acl_chmod(struct inode *inode)
+{
+ return 0;
+}
+static inline int ocfs2_init_acl(handle_t *handle,
+ struct inode *inode,
+ struct inode *dir,
+ struct buffer_head *di_bh,
+ struct buffer_head *dir_bh,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac)
+{
+ return 0;
+}
+
+#endif /* CONFIG_OCFS2_FS_POSIX_ACL*/
+
+#endif /* OCFS2_ACL_H */
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 0cc2deb9394..d861096c9d8 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -28,6 +28,7 @@
#include <linux/slab.h>
#include <linux/highmem.h>
#include <linux/swap.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_DISK_ALLOC
#include <cluster/masklog.h>
@@ -36,6 +37,7 @@
#include "alloc.h"
#include "aops.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "extent_map.h"
#include "inode.h"
@@ -46,6 +48,7 @@
#include "file.h"
#include "super.h"
#include "uptodate.h"
+#include "xattr.h"
#include "buffer_head_io.h"
@@ -187,20 +190,12 @@ static int ocfs2_dinode_insert_check(struct inode *inode,
static int ocfs2_dinode_sanity_check(struct inode *inode,
struct ocfs2_extent_tree *et)
{
- int ret = 0;
- struct ocfs2_dinode *di;
+ struct ocfs2_dinode *di = et->et_object;
BUG_ON(et->et_ops != &ocfs2_dinode_et_ops);
+ BUG_ON(!OCFS2_IS_VALID_DINODE(di));
- di = et->et_object;
- if (!OCFS2_IS_VALID_DINODE(di)) {
- ret = -EIO;
- ocfs2_error(inode->i_sb,
- "Inode %llu has invalid path root",
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
- }
-
- return ret;
+ return 0;
}
static void ocfs2_dinode_fill_root_el(struct ocfs2_extent_tree *et)
@@ -213,36 +208,33 @@ static void ocfs2_dinode_fill_root_el(struct ocfs2_extent_tree *et)
static void ocfs2_xattr_value_fill_root_el(struct ocfs2_extent_tree *et)
{
- struct ocfs2_xattr_value_root *xv = et->et_object;
+ struct ocfs2_xattr_value_buf *vb = et->et_object;
- et->et_root_el = &xv->xr_list;
+ et->et_root_el = &vb->vb_xv->xr_list;
}
static void ocfs2_xattr_value_set_last_eb_blk(struct ocfs2_extent_tree *et,
u64 blkno)
{
- struct ocfs2_xattr_value_root *xv =
- (struct ocfs2_xattr_value_root *)et->et_object;
+ struct ocfs2_xattr_value_buf *vb = et->et_object;
- xv->xr_last_eb_blk = cpu_to_le64(blkno);
+ vb->vb_xv->xr_last_eb_blk = cpu_to_le64(blkno);
}
static u64 ocfs2_xattr_value_get_last_eb_blk(struct ocfs2_extent_tree *et)
{
- struct ocfs2_xattr_value_root *xv =
- (struct ocfs2_xattr_value_root *) et->et_object;
+ struct ocfs2_xattr_value_buf *vb = et->et_object;
- return le64_to_cpu(xv->xr_last_eb_blk);
+ return le64_to_cpu(vb->vb_xv->xr_last_eb_blk);
}
static void ocfs2_xattr_value_update_clusters(struct inode *inode,
struct ocfs2_extent_tree *et,
u32 clusters)
{
- struct ocfs2_xattr_value_root *xv =
- (struct ocfs2_xattr_value_root *)et->et_object;
+ struct ocfs2_xattr_value_buf *vb = et->et_object;
- le32_add_cpu(&xv->xr_clusters, clusters);
+ le32_add_cpu(&vb->vb_xv->xr_clusters, clusters);
}
static struct ocfs2_extent_tree_operations ocfs2_xattr_value_et_ops = {
@@ -304,11 +296,13 @@ static struct ocfs2_extent_tree_operations ocfs2_xattr_tree_et_ops = {
static void __ocfs2_init_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
struct buffer_head *bh,
+ ocfs2_journal_access_func access,
void *obj,
struct ocfs2_extent_tree_operations *ops)
{
et->et_ops = ops;
et->et_root_bh = bh;
+ et->et_root_journal_access = access;
if (!obj)
obj = (void *)bh->b_data;
et->et_object = obj;
@@ -324,23 +318,23 @@ void ocfs2_init_dinode_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
struct buffer_head *bh)
{
- __ocfs2_init_extent_tree(et, inode, bh, NULL, &ocfs2_dinode_et_ops);
+ __ocfs2_init_extent_tree(et, inode, bh, ocfs2_journal_access_di,
+ NULL, &ocfs2_dinode_et_ops);
}
void ocfs2_init_xattr_tree_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
struct buffer_head *bh)
{
- __ocfs2_init_extent_tree(et, inode, bh, NULL,
- &ocfs2_xattr_tree_et_ops);
+ __ocfs2_init_extent_tree(et, inode, bh, ocfs2_journal_access_xb,
+ NULL, &ocfs2_xattr_tree_et_ops);
}
void ocfs2_init_xattr_value_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
- struct buffer_head *bh,
- struct ocfs2_xattr_value_root *xv)
+ struct ocfs2_xattr_value_buf *vb)
{
- __ocfs2_init_extent_tree(et, inode, bh, xv,
+ __ocfs2_init_extent_tree(et, inode, vb->vb_bh, vb->vb_access, vb,
&ocfs2_xattr_value_et_ops);
}
@@ -362,6 +356,15 @@ static inline void ocfs2_et_update_clusters(struct inode *inode,
et->et_ops->eo_update_clusters(inode, et, clusters);
}
+static inline int ocfs2_et_root_journal_access(handle_t *handle,
+ struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ int type)
+{
+ return et->et_root_journal_access(handle, inode, et->et_root_bh,
+ type);
+}
+
static inline int ocfs2_et_insert_check(struct inode *inode,
struct ocfs2_extent_tree *et,
struct ocfs2_extent_rec *rec)
@@ -402,12 +405,14 @@ struct ocfs2_path_item {
#define OCFS2_MAX_PATH_DEPTH 5
struct ocfs2_path {
- int p_tree_depth;
- struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
+ int p_tree_depth;
+ ocfs2_journal_access_func p_root_access;
+ struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
};
#define path_root_bh(_path) ((_path)->p_node[0].bh)
#define path_root_el(_path) ((_path)->p_node[0].el)
+#define path_root_access(_path)((_path)->p_root_access)
#define path_leaf_bh(_path) ((_path)->p_node[(_path)->p_tree_depth].bh)
#define path_leaf_el(_path) ((_path)->p_node[(_path)->p_tree_depth].el)
#define path_num_items(_path) ((_path)->p_tree_depth + 1)
@@ -440,6 +445,8 @@ static void ocfs2_reinit_path(struct ocfs2_path *path, int keep_root)
*/
if (keep_root)
depth = le16_to_cpu(path_root_el(path)->l_tree_depth);
+ else
+ path_root_access(path) = NULL;
path->p_tree_depth = depth;
}
@@ -465,6 +472,7 @@ static void ocfs2_cp_path(struct ocfs2_path *dest, struct ocfs2_path *src)
BUG_ON(path_root_bh(dest) != path_root_bh(src));
BUG_ON(path_root_el(dest) != path_root_el(src));
+ BUG_ON(path_root_access(dest) != path_root_access(src));
ocfs2_reinit_path(dest, 1);
@@ -486,6 +494,7 @@ static void ocfs2_mv_path(struct ocfs2_path *dest, struct ocfs2_path *src)
int i;
BUG_ON(path_root_bh(dest) != path_root_bh(src));
+ BUG_ON(path_root_access(dest) != path_root_access(src));
for(i = 1; i < OCFS2_MAX_PATH_DEPTH; i++) {
brelse(dest->p_node[i].bh);
@@ -521,7 +530,8 @@ static inline void ocfs2_path_insert_eb(struct ocfs2_path *path, int index,
}
static struct ocfs2_path *ocfs2_new_path(struct buffer_head *root_bh,
- struct ocfs2_extent_list *root_el)
+ struct ocfs2_extent_list *root_el,
+ ocfs2_journal_access_func access)
{
struct ocfs2_path *path;
@@ -533,11 +543,48 @@ static struct ocfs2_path *ocfs2_new_path(struct buffer_head *root_bh,
get_bh(root_bh);
path_root_bh(path) = root_bh;
path_root_el(path) = root_el;
+ path_root_access(path) = access;
}
return path;
}
+static struct ocfs2_path *ocfs2_new_path_from_path(struct ocfs2_path *path)
+{
+ return ocfs2_new_path(path_root_bh(path), path_root_el(path),
+ path_root_access(path));
+}
+
+static struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et)
+{
+ return ocfs2_new_path(et->et_root_bh, et->et_root_el,
+ et->et_root_journal_access);
+}
+
+/*
+ * Journal the buffer at depth idx. All idx>0 are extent_blocks,
+ * otherwise it's the root_access function.
+ *
+ * I don't like the way this function's name looks next to
+ * ocfs2_journal_access_path(), but I don't have a better one.
+ */
+static int ocfs2_path_bh_journal_access(handle_t *handle,
+ struct inode *inode,
+ struct ocfs2_path *path,
+ int idx)
+{
+ ocfs2_journal_access_func access = path_root_access(path);
+
+ if (!access)
+ access = ocfs2_journal_access;
+
+ if (idx)
+ access = ocfs2_journal_access_eb;
+
+ return access(handle, inode, path->p_node[idx].bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+}
+
/*
* Convenience function to journal all components in a path.
*/
@@ -550,8 +597,7 @@ static int ocfs2_journal_access_path(struct inode *inode, handle_t *handle,
goto out;
for(i = 0; i < path_num_items(path); i++) {
- ret = ocfs2_journal_access(handle, inode, path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, path, i);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -686,6 +732,80 @@ struct ocfs2_merge_ctxt {
int c_split_covers_rec;
};
+static int ocfs2_validate_extent_block(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_extent_block *eb =
+ (struct ocfs2_extent_block *)bh->b_data;
+
+ mlog(0, "Validating extent block %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &eb->h_check);
+ if (rc) {
+ mlog(ML_ERROR, "Checksum failed for extent block %llu\n",
+ (unsigned long long)bh->b_blocknr);
+ return rc;
+ }
+
+ /*
+ * Errors after here are fatal.
+ */
+
+ if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
+ ocfs2_error(sb,
+ "Extent block #%llu has bad signature %.*s",
+ (unsigned long long)bh->b_blocknr, 7,
+ eb->h_signature);
+ return -EINVAL;
+ }
+
+ if (le64_to_cpu(eb->h_blkno) != bh->b_blocknr) {
+ ocfs2_error(sb,
+ "Extent block #%llu has an invalid h_blkno "
+ "of %llu",
+ (unsigned long long)bh->b_blocknr,
+ (unsigned long long)le64_to_cpu(eb->h_blkno));
+ return -EINVAL;
+ }
+
+ if (le32_to_cpu(eb->h_fs_generation) != OCFS2_SB(sb)->fs_generation) {
+ ocfs2_error(sb,
+ "Extent block #%llu has an invalid "
+ "h_fs_generation of #%u",
+ (unsigned long long)bh->b_blocknr,
+ le32_to_cpu(eb->h_fs_generation));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int ocfs2_read_extent_block(struct inode *inode, u64 eb_blkno,
+ struct buffer_head **bh)
+{
+ int rc;
+ struct buffer_head *tmp = *bh;
+
+ rc = ocfs2_read_block(inode, eb_blkno, &tmp,
+ ocfs2_validate_extent_block);
+
+ /* If ocfs2_read_block() got us a new bh, pass it up. */
+ if (!rc && !*bh)
+ *bh = tmp;
+
+ return rc;
+}
+
+
/*
* How many free extents have we got before we need more meta data?
*/
@@ -705,8 +825,7 @@ int ocfs2_num_free_extents(struct ocfs2_super *osb,
last_eb_blk = ocfs2_et_get_last_eb_blk(et);
if (last_eb_blk) {
- retval = ocfs2_read_block(inode, last_eb_blk,
- &eb_bh);
+ retval = ocfs2_read_extent_block(inode, last_eb_blk, &eb_bh);
if (retval < 0) {
mlog_errno(retval);
goto bail;
@@ -768,8 +887,8 @@ static int ocfs2_create_new_meta_bhs(struct ocfs2_super *osb,
}
ocfs2_set_new_buffer_uptodate(inode, bhs[i]);
- status = ocfs2_journal_access(handle, inode, bhs[i],
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_eb(handle, inode, bhs[i],
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -908,15 +1027,12 @@ static int ocfs2_add_branch(struct ocfs2_super *osb,
for(i = 0; i < new_blocks; i++) {
bh = new_eb_bhs[i];
eb = (struct ocfs2_extent_block *) bh->b_data;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- status = -EIO;
- goto bail;
- }
+ /* ocfs2_create_new_meta_bhs() should create it right! */
+ BUG_ON(!OCFS2_IS_VALID_EXTENT_BLOCK(eb));
eb_el = &eb->h_list;
- status = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_eb(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -955,21 +1071,21 @@ static int ocfs2_add_branch(struct ocfs2_super *osb,
* journal_dirty erroring as it won't unless we've aborted the
* handle (in which case we would never be here) so reserving
* the write with journal_access is all we need to do. */
- status = ocfs2_journal_access(handle, inode, *last_eb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_eb(handle, inode, *last_eb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
- status = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
if (eb_bh) {
- status = ocfs2_journal_access(handle, inode, eb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_eb(handle, inode, eb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1052,17 +1168,14 @@ static int ocfs2_shift_tree_depth(struct ocfs2_super *osb,
}
eb = (struct ocfs2_extent_block *) new_eb_bh->b_data;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- status = -EIO;
- goto bail;
- }
+ /* ocfs2_create_new_meta_bhs() should create it right! */
+ BUG_ON(!OCFS2_IS_VALID_EXTENT_BLOCK(eb));
eb_el = &eb->h_list;
root_el = et->et_root_el;
- status = ocfs2_journal_access(handle, inode, new_eb_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_eb(handle, inode, new_eb_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1080,8 +1193,8 @@ static int ocfs2_shift_tree_depth(struct ocfs2_super *osb,
goto bail;
}
- status = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1176,18 +1289,13 @@ static int ocfs2_find_branch_target(struct ocfs2_super *osb,
brelse(bh);
bh = NULL;
- status = ocfs2_read_block(inode, blkno, &bh);
+ status = ocfs2_read_extent_block(inode, blkno, &bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
eb = (struct ocfs2_extent_block *) bh->b_data;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- status = -EIO;
- goto bail;
- }
el = &eb->h_list;
if (le16_to_cpu(el->l_next_free_rec) <
@@ -1540,7 +1648,7 @@ static int __ocfs2_find_path(struct inode *inode,
brelse(bh);
bh = NULL;
- ret = ocfs2_read_block(inode, blkno, &bh);
+ ret = ocfs2_read_extent_block(inode, blkno, &bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -1548,11 +1656,6 @@ static int __ocfs2_find_path(struct inode *inode,
eb = (struct ocfs2_extent_block *) bh->b_data;
el = &eb->h_list;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- ret = -EIO;
- goto out;
- }
if (le16_to_cpu(el->l_next_free_rec) >
le16_to_cpu(el->l_count)) {
@@ -1860,25 +1963,23 @@ static int ocfs2_rotate_subtree_right(struct inode *inode,
root_bh = left_path->p_node[subtree_index].bh;
BUG_ON(root_bh != right_path->p_node[subtree_index].bh);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
}
for(i = subtree_index + 1; i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2102,8 +2203,7 @@ static int ocfs2_rotate_tree_right(struct inode *inode,
*ret_left_path = NULL;
- left_path = ocfs2_new_path(path_root_bh(right_path),
- path_root_el(right_path));
+ left_path = ocfs2_new_path_from_path(right_path);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -2398,9 +2498,9 @@ static int ocfs2_rotate_subtree_left(struct inode *inode, handle_t *handle,
return -EAGAIN;
if (le16_to_cpu(right_leaf_el->l_next_free_rec) > 1) {
- ret = ocfs2_journal_access(handle, inode,
- path_leaf_bh(right_path),
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_eb(handle, inode,
+ path_leaf_bh(right_path),
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2417,8 +2517,8 @@ static int ocfs2_rotate_subtree_left(struct inode *inode, handle_t *handle,
* We have to update i_last_eb_blk during the meta
* data delete.
*/
- ret = ocfs2_journal_access(handle, inode, et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2433,25 +2533,23 @@ static int ocfs2_rotate_subtree_left(struct inode *inode, handle_t *handle,
*/
BUG_ON(right_has_empty && !del_right_subtree);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
}
for(i = subtree_index + 1; i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2596,16 +2694,17 @@ out:
static int ocfs2_rotate_rightmost_leaf_left(struct inode *inode,
handle_t *handle,
- struct buffer_head *bh,
- struct ocfs2_extent_list *el)
+ struct ocfs2_path *path)
{
int ret;
+ struct buffer_head *bh = path_leaf_bh(path);
+ struct ocfs2_extent_list *el = path_leaf_el(path);
if (!ocfs2_is_empty_extent(&el->l_recs[0]))
return 0;
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, path,
+ path_num_items(path) - 1);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2644,8 +2743,7 @@ static int __ocfs2_rotate_tree_left(struct inode *inode,
goto out;
}
- left_path = ocfs2_new_path(path_root_bh(path),
- path_root_el(path));
+ left_path = ocfs2_new_path_from_path(path);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -2654,8 +2752,7 @@ static int __ocfs2_rotate_tree_left(struct inode *inode,
ocfs2_cp_path(left_path, path);
- right_path = ocfs2_new_path(path_root_bh(path),
- path_root_el(path));
+ right_path = ocfs2_new_path_from_path(path);
if (!right_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -2689,9 +2786,8 @@ static int __ocfs2_rotate_tree_left(struct inode *inode,
* Caller might still want to make changes to the
* tree root, so re-add it to the journal here.
*/
- ret = ocfs2_journal_access(handle, inode,
- path_root_bh(left_path),
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, 0);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2785,8 +2881,7 @@ static int ocfs2_remove_rightmost_path(struct inode *inode, handle_t *handle,
* We have a path to the left of this one - it needs
* an update too.
*/
- left_path = ocfs2_new_path(path_root_bh(path),
- path_root_el(path));
+ left_path = ocfs2_new_path_from_path(path);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -2875,8 +2970,7 @@ rightmost_no_delete:
* it up front.
*/
ret = ocfs2_rotate_rightmost_leaf_left(inode, handle,
- path_leaf_bh(path),
- path_leaf_el(path));
+ path);
if (ret)
mlog_errno(ret);
goto out;
@@ -3027,8 +3121,7 @@ static int ocfs2_get_right_path(struct inode *inode,
/* This function shouldn't be called for the rightmost leaf. */
BUG_ON(right_cpos == 0);
- right_path = ocfs2_new_path(path_root_bh(left_path),
- path_root_el(left_path));
+ right_path = ocfs2_new_path_from_path(left_path);
if (!right_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -3111,8 +3204,8 @@ static int ocfs2_merge_rec_right(struct inode *inode,
root_bh = left_path->p_node[subtree_index].bh;
BUG_ON(root_bh != right_path->p_node[subtree_index].bh);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3120,17 +3213,15 @@ static int ocfs2_merge_rec_right(struct inode *inode,
for (i = subtree_index + 1;
i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3142,8 +3233,8 @@ static int ocfs2_merge_rec_right(struct inode *inode,
right_rec = &el->l_recs[index + 1];
}
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, left_path,
+ path_num_items(left_path) - 1);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3199,8 +3290,7 @@ static int ocfs2_get_left_path(struct inode *inode,
/* This function shouldn't be called for the leftmost leaf. */
BUG_ON(left_cpos == 0);
- left_path = ocfs2_new_path(path_root_bh(right_path),
- path_root_el(right_path));
+ left_path = ocfs2_new_path_from_path(right_path);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -3283,8 +3373,8 @@ static int ocfs2_merge_rec_left(struct inode *inode,
root_bh = left_path->p_node[subtree_index].bh;
BUG_ON(root_bh != right_path->p_node[subtree_index].bh);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3292,17 +3382,15 @@ static int ocfs2_merge_rec_left(struct inode *inode,
for (i = subtree_index + 1;
i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3314,8 +3402,8 @@ static int ocfs2_merge_rec_left(struct inode *inode,
has_empty_extent = 1;
}
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ path_num_items(right_path) - 1);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3732,8 +3820,7 @@ static int ocfs2_append_rec_to_path(struct inode *inode, handle_t *handle,
* leftmost leaf.
*/
if (left_cpos) {
- left_path = ocfs2_new_path(path_root_bh(right_path),
- path_root_el(right_path));
+ left_path = ocfs2_new_path_from_path(right_path);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -3781,7 +3868,7 @@ static void ocfs2_split_record(struct inode *inode,
struct ocfs2_extent_list *left_el = NULL, *right_el, *insert_el, *el;
struct ocfs2_extent_rec *rec, *tmprec;
- right_el = path_leaf_el(right_path);;
+ right_el = path_leaf_el(right_path);
if (left_path)
left_el = path_leaf_el(left_path);
@@ -3958,8 +4045,8 @@ static int ocfs2_do_insert_extent(struct inode *inode,
el = et->et_root_el;
- ret = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3970,7 +4057,7 @@ static int ocfs2_do_insert_extent(struct inode *inode,
goto out_update_clusters;
}
- right_path = ocfs2_new_path(et->et_root_bh, et->et_root_el);
+ right_path = ocfs2_new_path_from_et(et);
if (!right_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -4020,8 +4107,8 @@ static int ocfs2_do_insert_extent(struct inode *inode,
* ocfs2_rotate_tree_right() might have extended the
* transaction without re-journaling our tree root.
*/
- ret = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -4082,8 +4169,7 @@ ocfs2_figure_merge_contig_type(struct inode *inode, struct ocfs2_path *path,
goto out;
if (left_cpos != 0) {
- left_path = ocfs2_new_path(path_root_bh(path),
- path_root_el(path));
+ left_path = ocfs2_new_path_from_path(path);
if (!left_path)
goto out;
@@ -4097,8 +4183,15 @@ ocfs2_figure_merge_contig_type(struct inode *inode, struct ocfs2_path *path,
le16_to_cpu(new_el->l_count)) {
bh = path_leaf_bh(left_path);
eb = (struct ocfs2_extent_block *)bh->b_data;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb,
- eb);
+ ocfs2_error(inode->i_sb,
+ "Extent block #%llu has an "
+ "invalid l_next_free_rec of "
+ "%d. It should have "
+ "matched the l_count of %d",
+ (unsigned long long)le64_to_cpu(eb->h_blkno),
+ le16_to_cpu(new_el->l_next_free_rec),
+ le16_to_cpu(new_el->l_count));
+ status = -EINVAL;
goto out;
}
rec = &new_el->l_recs[
@@ -4132,8 +4225,7 @@ ocfs2_figure_merge_contig_type(struct inode *inode, struct ocfs2_path *path,
if (right_cpos == 0)
goto out;
- right_path = ocfs2_new_path(path_root_bh(path),
- path_root_el(path));
+ right_path = ocfs2_new_path_from_path(path);
if (!right_path)
goto out;
@@ -4147,8 +4239,12 @@ ocfs2_figure_merge_contig_type(struct inode *inode, struct ocfs2_path *path,
if (le16_to_cpu(new_el->l_next_free_rec) <= 1) {
bh = path_leaf_bh(right_path);
eb = (struct ocfs2_extent_block *)bh->b_data;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb,
- eb);
+ ocfs2_error(inode->i_sb,
+ "Extent block #%llu has an "
+ "invalid l_next_free_rec of %d",
+ (unsigned long long)le64_to_cpu(eb->h_blkno),
+ le16_to_cpu(new_el->l_next_free_rec));
+ status = -EINVAL;
goto out;
}
rec = &new_el->l_recs[1];
@@ -4294,7 +4390,9 @@ static int ocfs2_figure_insert_type(struct inode *inode,
* ocfs2_figure_insert_type() and ocfs2_add_branch()
* may want it later.
*/
- ret = ocfs2_read_block(inode, ocfs2_et_get_last_eb_blk(et), &bh);
+ ret = ocfs2_read_extent_block(inode,
+ ocfs2_et_get_last_eb_blk(et),
+ &bh);
if (ret) {
mlog_exit(ret);
goto out;
@@ -4320,7 +4418,7 @@ static int ocfs2_figure_insert_type(struct inode *inode,
return 0;
}
- path = ocfs2_new_path(et->et_root_bh, et->et_root_el);
+ path = ocfs2_new_path_from_et(et);
if (!path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -4531,9 +4629,9 @@ int ocfs2_add_clusters_in_btree(struct ocfs2_super *osb,
BUG_ON(num_bits > clusters_to_add);
- /* reserve our write early -- insert_extent may update the inode */
- status = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ /* reserve our write early -- insert_extent may update the tree root */
+ status = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -4760,20 +4858,15 @@ static int __ocfs2_mark_extent_written(struct inode *inode,
if (path->p_tree_depth) {
struct ocfs2_extent_block *eb;
- ret = ocfs2_read_block(inode, ocfs2_et_get_last_eb_blk(et),
- &last_eb_bh);
+ ret = ocfs2_read_extent_block(inode,
+ ocfs2_et_get_last_eb_blk(et),
+ &last_eb_bh);
if (ret) {
mlog_exit(ret);
goto out;
}
eb = (struct ocfs2_extent_block *) last_eb_bh->b_data;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- ret = -EROFS;
- goto out;
- }
-
rightmost_el = &eb->h_list;
} else
rightmost_el = path_root_el(path);
@@ -4854,7 +4947,7 @@ int ocfs2_mark_extent_written(struct inode *inode,
if (et->et_ops == &ocfs2_dinode_et_ops)
ocfs2_extent_map_trunc(inode, 0);
- left_path = ocfs2_new_path(et->et_root_bh, et->et_root_el);
+ left_path = ocfs2_new_path_from_et(et);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -4918,8 +5011,9 @@ static int ocfs2_split_tree(struct inode *inode, struct ocfs2_extent_tree *et,
depth = path->p_tree_depth;
if (depth > 0) {
- ret = ocfs2_read_block(inode, ocfs2_et_get_last_eb_blk(et),
- &last_eb_bh);
+ ret = ocfs2_read_extent_block(inode,
+ ocfs2_et_get_last_eb_blk(et),
+ &last_eb_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -5025,8 +5119,7 @@ static int ocfs2_truncate_rec(struct inode *inode, handle_t *handle,
}
if (left_cpos && le16_to_cpu(el->l_next_free_rec) > 1) {
- left_path = ocfs2_new_path(path_root_bh(path),
- path_root_el(path));
+ left_path = ocfs2_new_path_from_path(path);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -5135,7 +5228,7 @@ int ocfs2_remove_extent(struct inode *inode,
ocfs2_extent_map_trunc(inode, 0);
- path = ocfs2_new_path(et->et_root_bh, et->et_root_el);
+ path = ocfs2_new_path_from_et(et);
if (!path) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -5255,6 +5348,78 @@ out:
return ret;
}
+int ocfs2_remove_btree_range(struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ u32 cpos, u32 phys_cpos, u32 len,
+ struct ocfs2_cached_dealloc_ctxt *dealloc)
+{
+ int ret;
+ u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct inode *tl_inode = osb->osb_tl_inode;
+ handle_t *handle;
+ struct ocfs2_alloc_context *meta_ac = NULL;
+
+ ret = ocfs2_lock_allocators(inode, et, 0, 1, NULL, &meta_ac);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ mutex_lock(&tl_inode->i_mutex);
+
+ if (ocfs2_truncate_log_needs_flush(osb)) {
+ ret = __ocfs2_flush_truncate_log(osb);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ handle = ocfs2_start_trans(osb, ocfs2_remove_extent_credits(osb->sb));
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_remove_extent(inode, et, cpos, len, handle, meta_ac,
+ dealloc);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ ocfs2_et_update_clusters(inode, et, -len);
+
+ ret = ocfs2_journal_dirty(handle, et->et_root_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ ret = ocfs2_truncate_log_append(osb, handle, phys_blkno, len);
+ if (ret)
+ mlog_errno(ret);
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+out:
+ mutex_unlock(&tl_inode->i_mutex);
+
+ if (meta_ac)
+ ocfs2_free_alloc_context(meta_ac);
+
+ return ret;
+}
+
int ocfs2_truncate_log_needs_flush(struct ocfs2_super *osb)
{
struct buffer_head *tl_bh = osb->osb_tl_bh;
@@ -5308,13 +5473,13 @@ int ocfs2_truncate_log_append(struct ocfs2_super *osb,
start_cluster = ocfs2_blocks_to_clusters(osb->sb, start_blk);
di = (struct ocfs2_dinode *) tl_bh->b_data;
- tl = &di->id2.i_dealloc;
- if (!OCFS2_IS_VALID_DINODE(di)) {
- OCFS2_RO_ON_INVALID_DINODE(osb->sb, di);
- status = -EIO;
- goto bail;
- }
+ /* tl_bh is loaded from ocfs2_truncate_log_init(). It's validated
+ * by the underlying call to ocfs2_read_inode_block(), so any
+ * corruption is a code bug */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(di));
+
+ tl = &di->id2.i_dealloc;
tl_count = le16_to_cpu(tl->tl_count);
mlog_bug_on_msg(tl_count > ocfs2_truncate_recs_per_inode(osb->sb) ||
tl_count == 0,
@@ -5332,8 +5497,8 @@ int ocfs2_truncate_log_append(struct ocfs2_super *osb,
goto bail;
}
- status = ocfs2_journal_access(handle, tl_inode, tl_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, tl_inode, tl_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -5394,8 +5559,8 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb,
while (i >= 0) {
/* Caller has given us at least enough credits to
* update the truncate log dinode */
- status = ocfs2_journal_access(handle, tl_inode, tl_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, tl_inode, tl_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -5464,13 +5629,13 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
BUG_ON(mutex_trylock(&tl_inode->i_mutex));
di = (struct ocfs2_dinode *) tl_bh->b_data;
- tl = &di->id2.i_dealloc;
- if (!OCFS2_IS_VALID_DINODE(di)) {
- OCFS2_RO_ON_INVALID_DINODE(osb->sb, di);
- status = -EIO;
- goto out;
- }
+ /* tl_bh is loaded from ocfs2_truncate_log_init(). It's validated
+ * by the underlying call to ocfs2_read_inode_block(), so any
+ * corruption is a code bug */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(di));
+
+ tl = &di->id2.i_dealloc;
num_to_flush = le16_to_cpu(tl->tl_used);
mlog(0, "Flush %u records from truncate log #%llu\n",
num_to_flush, (unsigned long long)OCFS2_I(tl_inode)->ip_blkno);
@@ -5586,7 +5751,7 @@ static int ocfs2_get_truncate_log_info(struct ocfs2_super *osb,
goto bail;
}
- status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh);
+ status = ocfs2_read_inode_block(inode, &bh);
if (status < 0) {
iput(inode);
mlog_errno(status);
@@ -5625,13 +5790,13 @@ int ocfs2_begin_truncate_log_recovery(struct ocfs2_super *osb,
}
di = (struct ocfs2_dinode *) tl_bh->b_data;
- tl = &di->id2.i_dealloc;
- if (!OCFS2_IS_VALID_DINODE(di)) {
- OCFS2_RO_ON_INVALID_DINODE(tl_inode->i_sb, di);
- status = -EIO;
- goto bail;
- }
+ /* tl_bh is loaded from ocfs2_get_truncate_log_info(). It's
+ * validated by the underlying call to ocfs2_read_inode_block(),
+ * so any corruption is a code bug */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(di));
+
+ tl = &di->id2.i_dealloc;
if (le16_to_cpu(tl->tl_used)) {
mlog(0, "We'll have %u logs to recover\n",
le16_to_cpu(tl->tl_used));
@@ -5651,6 +5816,7 @@ int ocfs2_begin_truncate_log_recovery(struct ocfs2_super *osb,
* tl_used. */
tl->tl_used = 0;
+ ocfs2_compute_meta_ecc(osb->sb, tl_bh->b_data, &di->i_check);
status = ocfs2_write_block(osb, tl_bh, tl_inode);
if (status < 0) {
mlog_errno(status);
@@ -5800,7 +5966,10 @@ int ocfs2_truncate_log_init(struct ocfs2_super *osb)
*/
/*
- * Describes a single block free from a suballocator
+ * Describe a single bit freed from a suballocator. For the block
+ * suballocators, it represents one block. For the global cluster
+ * allocator, it represents some clusters and free_bit indicates
+ * clusters number.
*/
struct ocfs2_cached_block_free {
struct ocfs2_cached_block_free *free_next;
@@ -5815,10 +5984,10 @@ struct ocfs2_per_slot_free_list {
struct ocfs2_cached_block_free *f_first;
};
-static int ocfs2_free_cached_items(struct ocfs2_super *osb,
- int sysfile_type,
- int slot,
- struct ocfs2_cached_block_free *head)
+static int ocfs2_free_cached_blocks(struct ocfs2_super *osb,
+ int sysfile_type,
+ int slot,
+ struct ocfs2_cached_block_free *head)
{
int ret;
u64 bg_blkno;
@@ -5893,6 +6062,82 @@ out:
return ret;
}
+int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
+ u64 blkno, unsigned int bit)
+{
+ int ret = 0;
+ struct ocfs2_cached_block_free *item;
+
+ item = kmalloc(sizeof(*item), GFP_NOFS);
+ if (item == NULL) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ return ret;
+ }
+
+ mlog(0, "Insert clusters: (bit %u, blk %llu)\n",
+ bit, (unsigned long long)blkno);
+
+ item->free_blk = blkno;
+ item->free_bit = bit;
+ item->free_next = ctxt->c_global_allocator;
+
+ ctxt->c_global_allocator = item;
+ return ret;
+}
+
+static int ocfs2_free_cached_clusters(struct ocfs2_super *osb,
+ struct ocfs2_cached_block_free *head)
+{
+ struct ocfs2_cached_block_free *tmp;
+ struct inode *tl_inode = osb->osb_tl_inode;
+ handle_t *handle;
+ int ret = 0;
+
+ mutex_lock(&tl_inode->i_mutex);
+
+ while (head) {
+ if (ocfs2_truncate_log_needs_flush(osb)) {
+ ret = __ocfs2_flush_truncate_log(osb);
+ if (ret < 0) {
+ mlog_errno(ret);
+ break;
+ }
+ }
+
+ handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_UPDATE);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = ocfs2_truncate_log_append(osb, handle, head->free_blk,
+ head->free_bit);
+
+ ocfs2_commit_trans(osb, handle);
+ tmp = head;
+ head = head->free_next;
+ kfree(tmp);
+
+ if (ret < 0) {
+ mlog_errno(ret);
+ break;
+ }
+ }
+
+ mutex_unlock(&tl_inode->i_mutex);
+
+ while (head) {
+ /* Premature exit may have left some dangling items. */
+ tmp = head;
+ head = head->free_next;
+ kfree(tmp);
+ }
+
+ return ret;
+}
+
int ocfs2_run_deallocs(struct ocfs2_super *osb,
struct ocfs2_cached_dealloc_ctxt *ctxt)
{
@@ -5908,8 +6153,10 @@ int ocfs2_run_deallocs(struct ocfs2_super *osb,
if (fl->f_first) {
mlog(0, "Free items: (type %u, slot %d)\n",
fl->f_inode_type, fl->f_slot);
- ret2 = ocfs2_free_cached_items(osb, fl->f_inode_type,
- fl->f_slot, fl->f_first);
+ ret2 = ocfs2_free_cached_blocks(osb,
+ fl->f_inode_type,
+ fl->f_slot,
+ fl->f_first);
if (ret2)
mlog_errno(ret2);
if (!ret)
@@ -5920,6 +6167,17 @@ int ocfs2_run_deallocs(struct ocfs2_super *osb,
kfree(fl);
}
+ if (ctxt->c_global_allocator) {
+ ret2 = ocfs2_free_cached_clusters(osb,
+ ctxt->c_global_allocator);
+ if (ret2)
+ mlog_errno(ret2);
+ if (!ret)
+ ret = ret2;
+
+ ctxt->c_global_allocator = NULL;
+ }
+
return ret;
}
@@ -6075,11 +6333,10 @@ static int ocfs2_find_new_last_ext_blk(struct inode *inode,
eb = (struct ocfs2_extent_block *) bh->b_data;
el = &eb->h_list;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- ret = -EROFS;
- goto out;
- }
+
+ /* ocfs2_find_leaf() gets the eb from ocfs2_read_extent_block().
+ * Any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_EXTENT_BLOCK(eb));
*new_last_eb = bh;
get_bh(*new_last_eb);
@@ -6326,8 +6583,8 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb,
}
if (last_eb_bh) {
- status = ocfs2_journal_access(handle, inode, last_eb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_eb(handle, inode, last_eb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -6350,6 +6607,8 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb,
goto bail;
}
+ vfs_dq_free_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, clusters_to_del));
spin_lock(&OCFS2_I(inode)->ip_lock);
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters) -
clusters_to_del;
@@ -6436,11 +6695,6 @@ static void ocfs2_map_and_dirty_page(struct inode *inode, handle_t *handle,
mlog_errno(ret);
else if (ocfs2_should_order_data(inode)) {
ret = ocfs2_jbd2_file_inode(handle, inode);
-#ifdef CONFIG_OCFS2_COMPAT_JBD
- ret = walk_page_buffers(handle, page_buffers(page),
- from, to, &partial,
- ocfs2_journal_dirty_data);
-#endif
if (ret < 0)
mlog_errno(ret);
}
@@ -6663,6 +6917,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
struct page **pages = NULL;
loff_t end = osb->s_clustersize;
struct ocfs2_extent_tree et;
+ int did_quota = 0;
has_data = i_size_read(inode) ? 1 : 0;
@@ -6682,15 +6937,16 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
}
}
- handle = ocfs2_start_trans(osb, OCFS2_INLINE_TO_EXTENTS_CREDITS);
+ handle = ocfs2_start_trans(osb,
+ ocfs2_inline_to_extents_credits(osb->sb));
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
mlog_errno(ret);
goto out_unlock;
}
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -6701,6 +6957,13 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
unsigned int page_end;
u64 phys;
+ if (vfs_dq_alloc_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, 1))) {
+ ret = -EDQUOT;
+ goto out_commit;
+ }
+ did_quota = 1;
+
ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off,
&num);
if (ret) {
@@ -6774,6 +7037,10 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
}
out_commit:
+ if (ret < 0 && did_quota)
+ vfs_dq_free_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, 1));
+
ocfs2_commit_trans(osb, handle);
out_unlock:
@@ -6813,7 +7080,8 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
new_highest_cpos = ocfs2_clusters_for_bytes(osb->sb,
i_size_read(inode));
- path = ocfs2_new_path(fe_bh, &di->id2.i_list);
+ path = ocfs2_new_path(fe_bh, &di->id2.i_list,
+ ocfs2_journal_access_di);
if (!path) {
status = -ENOMEM;
mlog_errno(status);
@@ -6984,20 +7252,14 @@ int ocfs2_prepare_truncate(struct ocfs2_super *osb,
ocfs2_init_dealloc_ctxt(&(*tc)->tc_dealloc);
if (fe->id2.i_list.l_tree_depth) {
- status = ocfs2_read_block(inode, le64_to_cpu(fe->i_last_eb_blk),
- &last_eb_bh);
+ status = ocfs2_read_extent_block(inode,
+ le64_to_cpu(fe->i_last_eb_blk),
+ &last_eb_bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
eb = (struct ocfs2_extent_block *) last_eb_bh->b_data;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
-
- brelse(last_eb_bh);
- status = -EIO;
- goto bail;
- }
}
(*tc)->tc_last_eb_bh = last_eb_bh;
@@ -7052,8 +7314,8 @@ int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
goto out;
}
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index 70257c84cfb..cceff5c37f4 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -45,7 +45,9 @@
*
* ocfs2_extent_tree contains info for the root of the b-tree, it must have a
* root ocfs2_extent_list and a root_bh so that they can be used in the b-tree
- * functions.
+ * functions. With metadata ecc, we now call different journal_access
+ * functions for each type of metadata, so it must have the
+ * root_journal_access function.
* ocfs2_extent_tree_operations abstract the normal operations we do for
* the root of extent b-tree.
*/
@@ -54,6 +56,7 @@ struct ocfs2_extent_tree {
struct ocfs2_extent_tree_operations *et_ops;
struct buffer_head *et_root_bh;
struct ocfs2_extent_list *et_root_el;
+ ocfs2_journal_access_func et_root_journal_access;
void *et_object;
unsigned int et_max_leaf_clusters;
};
@@ -68,10 +71,18 @@ void ocfs2_init_dinode_extent_tree(struct ocfs2_extent_tree *et,
void ocfs2_init_xattr_tree_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
struct buffer_head *bh);
+struct ocfs2_xattr_value_buf;
void ocfs2_init_xattr_value_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
- struct buffer_head *bh,
- struct ocfs2_xattr_value_root *xv);
+ struct ocfs2_xattr_value_buf *vb);
+
+/*
+ * Read an extent block into *bh. If *bh is NULL, a bh will be
+ * allocated. This is a cached read. The extent block will be validated
+ * with ocfs2_validate_extent_block().
+ */
+int ocfs2_read_extent_block(struct inode *inode, u64 eb_blkno,
+ struct buffer_head **bh);
struct ocfs2_alloc_context;
int ocfs2_insert_extent(struct ocfs2_super *osb,
@@ -110,6 +121,11 @@ int ocfs2_remove_extent(struct inode *inode,
u32 cpos, u32 len, handle_t *handle,
struct ocfs2_alloc_context *meta_ac,
struct ocfs2_cached_dealloc_ctxt *dealloc);
+int ocfs2_remove_btree_range(struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ u32 cpos, u32 phys_cpos, u32 len,
+ struct ocfs2_cached_dealloc_ctxt *dealloc);
+
int ocfs2_num_free_extents(struct ocfs2_super *osb,
struct inode *inode,
struct ocfs2_extent_tree *et);
@@ -167,10 +183,18 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb);
*/
struct ocfs2_cached_dealloc_ctxt {
struct ocfs2_per_slot_free_list *c_first_suballocator;
+ struct ocfs2_cached_block_free *c_global_allocator;
};
static inline void ocfs2_init_dealloc_ctxt(struct ocfs2_cached_dealloc_ctxt *c)
{
c->c_first_suballocator = NULL;
+ c->c_global_allocator = NULL;
+}
+int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
+ u64 blkno, unsigned int bit);
+static inline int ocfs2_dealloc_has_cluster(struct ocfs2_cached_dealloc_ctxt *c)
+{
+ return c->c_global_allocator != NULL;
}
int ocfs2_run_deallocs(struct ocfs2_super *osb,
struct ocfs2_cached_dealloc_ctxt *ctxt);
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index c22543b3342..a067a6cffb0 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -27,6 +27,7 @@
#include <linux/swap.h>
#include <linux/pipe_fs_i.h>
#include <linux/mpage.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_FILE_IO
#include <cluster/masklog.h>
@@ -68,20 +69,13 @@ static int ocfs2_symlink_get_block(struct inode *inode, sector_t iblock,
goto bail;
}
- status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh);
+ status = ocfs2_read_inode_block(inode, &bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
fe = (struct ocfs2_dinode *) bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- mlog(ML_ERROR, "Invalid dinode #%llu: signature = %.*s\n",
- (unsigned long long)le64_to_cpu(fe->i_blkno), 7,
- fe->i_signature);
- goto bail;
- }
-
if ((u64)iblock >= ocfs2_clusters_to_blocks(inode->i_sb,
le32_to_cpu(fe->i_clusters))) {
mlog(ML_ERROR, "block offset is outside the allocated size: "
@@ -262,7 +256,7 @@ static int ocfs2_readpage_inline(struct inode *inode, struct page *page)
BUG_ON(!PageLocked(page));
BUG_ON(!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL));
- ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(inode, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -481,12 +475,6 @@ handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
if (ocfs2_should_order_data(inode)) {
ret = ocfs2_jbd2_file_inode(handle, inode);
-#ifdef CONFIG_OCFS2_COMPAT_JBD
- ret = walk_page_buffers(handle,
- page_buffers(page),
- from, to, NULL,
- ocfs2_journal_dirty_data);
-#endif
if (ret < 0)
mlog_errno(ret);
}
@@ -1072,15 +1060,8 @@ static void ocfs2_write_failure(struct inode *inode,
tmppage = wc->w_pages[i];
if (page_has_buffers(tmppage)) {
- if (ocfs2_should_order_data(inode)) {
+ if (ocfs2_should_order_data(inode))
ocfs2_jbd2_file_inode(wc->w_handle, inode);
-#ifdef CONFIG_OCFS2_COMPAT_JBD
- walk_page_buffers(wc->w_handle,
- page_buffers(tmppage),
- from, to, NULL,
- ocfs2_journal_dirty_data);
-#endif
- }
block_commit_write(tmppage, from, to);
}
@@ -1531,8 +1512,8 @@ static int ocfs2_write_begin_inline(struct address_space *mapping,
goto out;
}
- ret = ocfs2_journal_access(handle, inode, wc->w_di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, wc->w_di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
ocfs2_commit_trans(osb, handle);
@@ -1750,15 +1731,20 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
wc->w_handle = handle;
+ if (clusters_to_alloc && vfs_dq_alloc_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, clusters_to_alloc))) {
+ ret = -EDQUOT;
+ goto out_commit;
+ }
/*
* We don't want this to fail in ocfs2_write_end(), so do it
* here.
*/
- ret = ocfs2_journal_access(handle, inode, wc->w_di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, wc->w_di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out_quota;
}
/*
@@ -1771,14 +1757,14 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
mmap_page);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out_quota;
}
ret = ocfs2_write_cluster_by_desc(mapping, data_ac, meta_ac, wc, pos,
len);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out_quota;
}
if (data_ac)
@@ -1790,6 +1776,10 @@ success:
*pagep = wc->w_target_page;
*fsdata = wc;
return 0;
+out_quota:
+ if (clusters_to_alloc)
+ vfs_dq_free_space(inode,
+ ocfs2_clusters_to_bytes(osb->sb, clusters_to_alloc));
out_commit:
ocfs2_commit_trans(osb, handle);
@@ -1919,15 +1909,8 @@ int ocfs2_write_end_nolock(struct address_space *mapping,
}
if (page_has_buffers(tmppage)) {
- if (ocfs2_should_order_data(inode)) {
+ if (ocfs2_should_order_data(inode))
ocfs2_jbd2_file_inode(wc->w_handle, inode);
-#ifdef CONFIG_OCFS2_COMPAT_JBD
- walk_page_buffers(wc->w_handle,
- page_buffers(tmppage),
- from, to, NULL,
- ocfs2_journal_dirty_data);
-#endif
- }
block_commit_write(tmppage, from, to);
}
}
diff --git a/fs/ocfs2/blockcheck.c b/fs/ocfs2/blockcheck.c
new file mode 100644
index 00000000000..2a947c44e59
--- /dev/null
+++ b/fs/ocfs2/blockcheck.c
@@ -0,0 +1,477 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * blockcheck.c
+ *
+ * Checksum and ECC codes for the OCFS2 userspace library.
+ *
+ * Copyright (C) 2006, 2008 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License, version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/crc32.h>
+#include <linux/buffer_head.h>
+#include <linux/bitops.h>
+#include <asm/byteorder.h>
+
+#include <cluster/masklog.h>
+
+#include "ocfs2.h"
+
+#include "blockcheck.h"
+
+
+/*
+ * We use the following conventions:
+ *
+ * d = # data bits
+ * p = # parity bits
+ * c = # total code bits (d + p)
+ */
+
+
+/*
+ * Calculate the bit offset in the hamming code buffer based on the bit's
+ * offset in the data buffer. Since the hamming code reserves all
+ * power-of-two bits for parity, the data bit number and the code bit
+ * number are offest by all the parity bits beforehand.
+ *
+ * Recall that bit numbers in hamming code are 1-based. This function
+ * takes the 0-based data bit from the caller.
+ *
+ * An example. Take bit 1 of the data buffer. 1 is a power of two (2^0),
+ * so it's a parity bit. 2 is a power of two (2^1), so it's a parity bit.
+ * 3 is not a power of two. So bit 1 of the data buffer ends up as bit 3
+ * in the code buffer.
+ *
+ * The caller can pass in *p if it wants to keep track of the most recent
+ * number of parity bits added. This allows the function to start the
+ * calculation at the last place.
+ */
+static unsigned int calc_code_bit(unsigned int i, unsigned int *p_cache)
+{
+ unsigned int b, p = 0;
+
+ /*
+ * Data bits are 0-based, but we're talking code bits, which
+ * are 1-based.
+ */
+ b = i + 1;
+
+ /* Use the cache if it is there */
+ if (p_cache)
+ p = *p_cache;
+ b += p;
+
+ /*
+ * For every power of two below our bit number, bump our bit.
+ *
+ * We compare with (b + 1) because we have to compare with what b
+ * would be _if_ it were bumped up by the parity bit. Capice?
+ *
+ * p is set above.
+ */
+ for (; (1 << p) < (b + 1); p++)
+ b++;
+
+ if (p_cache)
+ *p_cache = p;
+
+ return b;
+}
+
+/*
+ * This is the low level encoder function. It can be called across
+ * multiple hunks just like the crc32 code. 'd' is the number of bits
+ * _in_this_hunk_. nr is the bit offset of this hunk. So, if you had
+ * two 512B buffers, you would do it like so:
+ *
+ * parity = ocfs2_hamming_encode(0, buf1, 512 * 8, 0);
+ * parity = ocfs2_hamming_encode(parity, buf2, 512 * 8, 512 * 8);
+ *
+ * If you just have one buffer, use ocfs2_hamming_encode_block().
+ */
+u32 ocfs2_hamming_encode(u32 parity, void *data, unsigned int d, unsigned int nr)
+{
+ unsigned int i, b, p = 0;
+
+ BUG_ON(!d);
+
+ /*
+ * b is the hamming code bit number. Hamming code specifies a
+ * 1-based array, but C uses 0-based. So 'i' is for C, and 'b' is
+ * for the algorithm.
+ *
+ * The i++ in the for loop is so that the start offset passed
+ * to ocfs2_find_next_bit_set() is one greater than the previously
+ * found bit.
+ */
+ for (i = 0; (i = ocfs2_find_next_bit(data, d, i)) < d; i++)
+ {
+ /*
+ * i is the offset in this hunk, nr + i is the total bit
+ * offset.
+ */
+ b = calc_code_bit(nr + i, &p);
+
+ /*
+ * Data bits in the resultant code are checked by
+ * parity bits that are part of the bit number
+ * representation. Huh?
+ *
+ * <wikipedia href="http://en.wikipedia.org/wiki/Hamming_code">
+ * In other words, the parity bit at position 2^k
+ * checks bits in positions having bit k set in
+ * their binary representation. Conversely, for
+ * instance, bit 13, i.e. 1101(2), is checked by
+ * bits 1000(2) = 8, 0100(2)=4 and 0001(2) = 1.
+ * </wikipedia>
+ *
+ * Note that 'k' is the _code_ bit number. 'b' in
+ * our loop.
+ */
+ parity ^= b;
+ }
+
+ /* While the data buffer was treated as little endian, the
+ * return value is in host endian. */
+ return parity;
+}
+
+u32 ocfs2_hamming_encode_block(void *data, unsigned int blocksize)
+{
+ return ocfs2_hamming_encode(0, data, blocksize * 8, 0);
+}
+
+/*
+ * Like ocfs2_hamming_encode(), this can handle hunks. nr is the bit
+ * offset of the current hunk. If bit to be fixed is not part of the
+ * current hunk, this does nothing.
+ *
+ * If you only have one hunk, use ocfs2_hamming_fix_block().
+ */
+void ocfs2_hamming_fix(void *data, unsigned int d, unsigned int nr,
+ unsigned int fix)
+{
+ unsigned int i, b;
+
+ BUG_ON(!d);
+
+ /*
+ * If the bit to fix has an hweight of 1, it's a parity bit. One
+ * busted parity bit is its own error. Nothing to do here.
+ */
+ if (hweight32(fix) == 1)
+ return;
+
+ /*
+ * nr + d is the bit right past the data hunk we're looking at.
+ * If fix after that, nothing to do
+ */
+ if (fix >= calc_code_bit(nr + d, NULL))
+ return;
+
+ /*
+ * nr is the offset in the data hunk we're starting at. Let's
+ * start b at the offset in the code buffer. See hamming_encode()
+ * for a more detailed description of 'b'.
+ */
+ b = calc_code_bit(nr, NULL);
+ /* If the fix is before this hunk, nothing to do */
+ if (fix < b)
+ return;
+
+ for (i = 0; i < d; i++, b++)
+ {
+ /* Skip past parity bits */
+ while (hweight32(b) == 1)
+ b++;
+
+ /*
+ * i is the offset in this data hunk.
+ * nr + i is the offset in the total data buffer.
+ * b is the offset in the total code buffer.
+ *
+ * Thus, when b == fix, bit i in the current hunk needs
+ * fixing.
+ */
+ if (b == fix)
+ {
+ if (ocfs2_test_bit(i, data))
+ ocfs2_clear_bit(i, data);
+ else
+ ocfs2_set_bit(i, data);
+ break;
+ }
+ }
+}
+
+void ocfs2_hamming_fix_block(void *data, unsigned int blocksize,
+ unsigned int fix)
+{
+ ocfs2_hamming_fix(data, blocksize * 8, 0, fix);
+}
+
+/*
+ * This function generates check information for a block.
+ * data is the block to be checked. bc is a pointer to the
+ * ocfs2_block_check structure describing the crc32 and the ecc.
+ *
+ * bc should be a pointer inside data, as the function will
+ * take care of zeroing it before calculating the check information. If
+ * bc does not point inside data, the caller must make sure any inline
+ * ocfs2_block_check structures are zeroed.
+ *
+ * The data buffer must be in on-disk endian (little endian for ocfs2).
+ * bc will be filled with little-endian values and will be ready to go to
+ * disk.
+ */
+void ocfs2_block_check_compute(void *data, size_t blocksize,
+ struct ocfs2_block_check *bc)
+{
+ u32 crc;
+ u32 ecc;
+
+ memset(bc, 0, sizeof(struct ocfs2_block_check));
+
+ crc = crc32_le(~0, data, blocksize);
+ ecc = ocfs2_hamming_encode_block(data, blocksize);
+
+ /*
+ * No ecc'd ocfs2 structure is larger than 4K, so ecc will be no
+ * larger than 16 bits.
+ */
+ BUG_ON(ecc > USHORT_MAX);
+
+ bc->bc_crc32e = cpu_to_le32(crc);
+ bc->bc_ecc = cpu_to_le16((u16)ecc);
+}
+
+/*
+ * This function validates existing check information. Like _compute,
+ * the function will take care of zeroing bc before calculating check codes.
+ * If bc is not a pointer inside data, the caller must have zeroed any
+ * inline ocfs2_block_check structures.
+ *
+ * Again, the data passed in should be the on-disk endian.
+ */
+int ocfs2_block_check_validate(void *data, size_t blocksize,
+ struct ocfs2_block_check *bc)
+{
+ int rc = 0;
+ struct ocfs2_block_check check;
+ u32 crc, ecc;
+
+ check.bc_crc32e = le32_to_cpu(bc->bc_crc32e);
+ check.bc_ecc = le16_to_cpu(bc->bc_ecc);
+
+ memset(bc, 0, sizeof(struct ocfs2_block_check));
+
+ /* Fast path - if the crc32 validates, we're good to go */
+ crc = crc32_le(~0, data, blocksize);
+ if (crc == check.bc_crc32e)
+ goto out;
+
+ mlog(ML_ERROR,
+ "CRC32 failed: stored: %u, computed %u. Applying ECC.\n",
+ (unsigned int)check.bc_crc32e, (unsigned int)crc);
+
+ /* Ok, try ECC fixups */
+ ecc = ocfs2_hamming_encode_block(data, blocksize);
+ ocfs2_hamming_fix_block(data, blocksize, ecc ^ check.bc_ecc);
+
+ /* And check the crc32 again */
+ crc = crc32_le(~0, data, blocksize);
+ if (crc == check.bc_crc32e)
+ goto out;
+
+ mlog(ML_ERROR, "Fixed CRC32 failed: stored: %u, computed %u\n",
+ (unsigned int)check.bc_crc32e, (unsigned int)crc);
+
+ rc = -EIO;
+
+out:
+ bc->bc_crc32e = cpu_to_le32(check.bc_crc32e);
+ bc->bc_ecc = cpu_to_le16(check.bc_ecc);
+
+ return rc;
+}
+
+/*
+ * This function generates check information for a list of buffer_heads.
+ * bhs is the blocks to be checked. bc is a pointer to the
+ * ocfs2_block_check structure describing the crc32 and the ecc.
+ *
+ * bc should be a pointer inside data, as the function will
+ * take care of zeroing it before calculating the check information. If
+ * bc does not point inside data, the caller must make sure any inline
+ * ocfs2_block_check structures are zeroed.
+ *
+ * The data buffer must be in on-disk endian (little endian for ocfs2).
+ * bc will be filled with little-endian values and will be ready to go to
+ * disk.
+ */
+void ocfs2_block_check_compute_bhs(struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc)
+{
+ int i;
+ u32 crc, ecc;
+
+ BUG_ON(nr < 0);
+
+ if (!nr)
+ return;
+
+ memset(bc, 0, sizeof(struct ocfs2_block_check));
+
+ for (i = 0, crc = ~0, ecc = 0; i < nr; i++) {
+ crc = crc32_le(crc, bhs[i]->b_data, bhs[i]->b_size);
+ /*
+ * The number of bits in a buffer is obviously b_size*8.
+ * The offset of this buffer is b_size*i, so the bit offset
+ * of this buffer is b_size*8*i.
+ */
+ ecc = (u16)ocfs2_hamming_encode(ecc, bhs[i]->b_data,
+ bhs[i]->b_size * 8,
+ bhs[i]->b_size * 8 * i);
+ }
+
+ /*
+ * No ecc'd ocfs2 structure is larger than 4K, so ecc will be no
+ * larger than 16 bits.
+ */
+ BUG_ON(ecc > USHORT_MAX);
+
+ bc->bc_crc32e = cpu_to_le32(crc);
+ bc->bc_ecc = cpu_to_le16((u16)ecc);
+}
+
+/*
+ * This function validates existing check information on a list of
+ * buffer_heads. Like _compute_bhs, the function will take care of
+ * zeroing bc before calculating check codes. If bc is not a pointer
+ * inside data, the caller must have zeroed any inline
+ * ocfs2_block_check structures.
+ *
+ * Again, the data passed in should be the on-disk endian.
+ */
+int ocfs2_block_check_validate_bhs(struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc)
+{
+ int i, rc = 0;
+ struct ocfs2_block_check check;
+ u32 crc, ecc, fix;
+
+ BUG_ON(nr < 0);
+
+ if (!nr)
+ return 0;
+
+ check.bc_crc32e = le32_to_cpu(bc->bc_crc32e);
+ check.bc_ecc = le16_to_cpu(bc->bc_ecc);
+
+ memset(bc, 0, sizeof(struct ocfs2_block_check));
+
+ /* Fast path - if the crc32 validates, we're good to go */
+ for (i = 0, crc = ~0; i < nr; i++)
+ crc = crc32_le(crc, bhs[i]->b_data, bhs[i]->b_size);
+ if (crc == check.bc_crc32e)
+ goto out;
+
+ mlog(ML_ERROR,
+ "CRC32 failed: stored: %u, computed %u. Applying ECC.\n",
+ (unsigned int)check.bc_crc32e, (unsigned int)crc);
+
+ /* Ok, try ECC fixups */
+ for (i = 0, ecc = 0; i < nr; i++) {
+ /*
+ * The number of bits in a buffer is obviously b_size*8.
+ * The offset of this buffer is b_size*i, so the bit offset
+ * of this buffer is b_size*8*i.
+ */
+ ecc = (u16)ocfs2_hamming_encode(ecc, bhs[i]->b_data,
+ bhs[i]->b_size * 8,
+ bhs[i]->b_size * 8 * i);
+ }
+ fix = ecc ^ check.bc_ecc;
+ for (i = 0; i < nr; i++) {
+ /*
+ * Try the fix against each buffer. It will only affect
+ * one of them.
+ */
+ ocfs2_hamming_fix(bhs[i]->b_data, bhs[i]->b_size * 8,
+ bhs[i]->b_size * 8 * i, fix);
+ }
+
+ /* And check the crc32 again */
+ for (i = 0, crc = ~0; i < nr; i++)
+ crc = crc32_le(crc, bhs[i]->b_data, bhs[i]->b_size);
+ if (crc == check.bc_crc32e)
+ goto out;
+
+ mlog(ML_ERROR, "Fixed CRC32 failed: stored: %u, computed %u\n",
+ (unsigned int)check.bc_crc32e, (unsigned int)crc);
+
+ rc = -EIO;
+
+out:
+ bc->bc_crc32e = cpu_to_le32(check.bc_crc32e);
+ bc->bc_ecc = cpu_to_le16(check.bc_ecc);
+
+ return rc;
+}
+
+/*
+ * These are the main API. They check the superblock flag before
+ * calling the underlying operations.
+ *
+ * They expect the buffer(s) to be in disk format.
+ */
+void ocfs2_compute_meta_ecc(struct super_block *sb, void *data,
+ struct ocfs2_block_check *bc)
+{
+ if (ocfs2_meta_ecc(OCFS2_SB(sb)))
+ ocfs2_block_check_compute(data, sb->s_blocksize, bc);
+}
+
+int ocfs2_validate_meta_ecc(struct super_block *sb, void *data,
+ struct ocfs2_block_check *bc)
+{
+ int rc = 0;
+
+ if (ocfs2_meta_ecc(OCFS2_SB(sb)))
+ rc = ocfs2_block_check_validate(data, sb->s_blocksize, bc);
+
+ return rc;
+}
+
+void ocfs2_compute_meta_ecc_bhs(struct super_block *sb,
+ struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc)
+{
+ if (ocfs2_meta_ecc(OCFS2_SB(sb)))
+ ocfs2_block_check_compute_bhs(bhs, nr, bc);
+}
+
+int ocfs2_validate_meta_ecc_bhs(struct super_block *sb,
+ struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc)
+{
+ int rc = 0;
+
+ if (ocfs2_meta_ecc(OCFS2_SB(sb)))
+ rc = ocfs2_block_check_validate_bhs(bhs, nr, bc);
+
+ return rc;
+}
+
diff --git a/fs/ocfs2/blockcheck.h b/fs/ocfs2/blockcheck.h
new file mode 100644
index 00000000000..70ec3feda32
--- /dev/null
+++ b/fs/ocfs2/blockcheck.h
@@ -0,0 +1,82 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * blockcheck.h
+ *
+ * Checksum and ECC codes for the OCFS2 userspace library.
+ *
+ * Copyright (C) 2004, 2008 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License, version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef OCFS2_BLOCKCHECK_H
+#define OCFS2_BLOCKCHECK_H
+
+
+/* High level block API */
+void ocfs2_compute_meta_ecc(struct super_block *sb, void *data,
+ struct ocfs2_block_check *bc);
+int ocfs2_validate_meta_ecc(struct super_block *sb, void *data,
+ struct ocfs2_block_check *bc);
+void ocfs2_compute_meta_ecc_bhs(struct super_block *sb,
+ struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc);
+int ocfs2_validate_meta_ecc_bhs(struct super_block *sb,
+ struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc);
+
+/* Lower level API */
+void ocfs2_block_check_compute(void *data, size_t blocksize,
+ struct ocfs2_block_check *bc);
+int ocfs2_block_check_validate(void *data, size_t blocksize,
+ struct ocfs2_block_check *bc);
+void ocfs2_block_check_compute_bhs(struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc);
+int ocfs2_block_check_validate_bhs(struct buffer_head **bhs, int nr,
+ struct ocfs2_block_check *bc);
+
+/*
+ * Hamming code functions
+ */
+
+/*
+ * Encoding hamming code parity bits for a buffer.
+ *
+ * This is the low level encoder function. It can be called across
+ * multiple hunks just like the crc32 code. 'd' is the number of bits
+ * _in_this_hunk_. nr is the bit offset of this hunk. So, if you had
+ * two 512B buffers, you would do it like so:
+ *
+ * parity = ocfs2_hamming_encode(0, buf1, 512 * 8, 0);
+ * parity = ocfs2_hamming_encode(parity, buf2, 512 * 8, 512 * 8);
+ *
+ * If you just have one buffer, use ocfs2_hamming_encode_block().
+ */
+u32 ocfs2_hamming_encode(u32 parity, void *data, unsigned int d,
+ unsigned int nr);
+/*
+ * Fix a buffer with a bit error. The 'fix' is the original parity
+ * xor'd with the parity calculated now.
+ *
+ * Like ocfs2_hamming_encode(), this can handle hunks. nr is the bit
+ * offset of the current hunk. If bit to be fixed is not part of the
+ * current hunk, this does nothing.
+ *
+ * If you only have one buffer, use ocfs2_hamming_fix_block().
+ */
+void ocfs2_hamming_fix(void *data, unsigned int d, unsigned int nr,
+ unsigned int fix);
+
+/* Convenience wrappers for a single buffer of data */
+extern u32 ocfs2_hamming_encode_block(void *data, unsigned int blocksize);
+extern void ocfs2_hamming_fix_block(void *data, unsigned int blocksize,
+ unsigned int fix);
+#endif
diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index 3a178ec48d7..15c8e6deee2 100644
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -39,6 +39,18 @@
#include "buffer_head_io.h"
+/*
+ * Bits on bh->b_state used by ocfs2.
+ *
+ * These MUST be after the JBD2 bits. Hence, we use BH_JBDPrivateStart.
+ */
+enum ocfs2_state_bits {
+ BH_NeedsValidate = BH_JBDPrivateStart,
+};
+
+/* Expand the magic b_state functions */
+BUFFER_FNS(NeedsValidate, needs_validate);
+
int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
struct inode *inode)
{
@@ -166,7 +178,9 @@ bail:
}
int ocfs2_read_blocks(struct inode *inode, u64 block, int nr,
- struct buffer_head *bhs[], int flags)
+ struct buffer_head *bhs[], int flags,
+ int (*validate)(struct super_block *sb,
+ struct buffer_head *bh))
{
int status = 0;
int i, ignore_cache = 0;
@@ -298,6 +312,8 @@ int ocfs2_read_blocks(struct inode *inode, u64 block, int nr,
clear_buffer_uptodate(bh);
get_bh(bh); /* for end_buffer_read_sync() */
+ if (validate)
+ set_buffer_needs_validate(bh);
bh->b_end_io = end_buffer_read_sync;
submit_bh(READ, bh);
continue;
@@ -328,6 +344,20 @@ int ocfs2_read_blocks(struct inode *inode, u64 block, int nr,
bhs[i] = NULL;
continue;
}
+
+ if (buffer_needs_validate(bh)) {
+ /* We never set NeedsValidate if the
+ * buffer was held by the journal, so
+ * that better not have changed */
+ BUG_ON(buffer_jbd(bh));
+ clear_buffer_needs_validate(bh);
+ status = validate(inode->i_sb, bh);
+ if (status) {
+ put_bh(bh);
+ bhs[i] = NULL;
+ continue;
+ }
+ }
}
/* Always set the buffer in the cache, even if it was
diff --git a/fs/ocfs2/buffer_head_io.h b/fs/ocfs2/buffer_head_io.h
index 75e1dcb1ade..c75d682dadd 100644
--- a/fs/ocfs2/buffer_head_io.h
+++ b/fs/ocfs2/buffer_head_io.h
@@ -31,21 +31,24 @@
void ocfs2_end_buffer_io_sync(struct buffer_head *bh,
int uptodate);
-static inline int ocfs2_read_block(struct inode *inode,
- u64 off,
- struct buffer_head **bh);
-
int ocfs2_write_block(struct ocfs2_super *osb,
struct buffer_head *bh,
struct inode *inode);
-int ocfs2_read_blocks(struct inode *inode,
- u64 block,
- int nr,
- struct buffer_head *bhs[],
- int flags);
int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
unsigned int nr, struct buffer_head *bhs[]);
+/*
+ * If not NULL, validate() will be called on a buffer that is freshly
+ * read from disk. It will not be called if the buffer was in cache.
+ * Note that if validate() is being used for this buffer, it needs to
+ * be set even for a READAHEAD call, as it marks the buffer for later
+ * validation.
+ */
+int ocfs2_read_blocks(struct inode *inode, u64 block, int nr,
+ struct buffer_head *bhs[], int flags,
+ int (*validate)(struct super_block *sb,
+ struct buffer_head *bh));
+
int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
struct buffer_head *bh);
@@ -53,7 +56,9 @@ int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
#define OCFS2_BH_READAHEAD 8
static inline int ocfs2_read_block(struct inode *inode, u64 off,
- struct buffer_head **bh)
+ struct buffer_head **bh,
+ int (*validate)(struct super_block *sb,
+ struct buffer_head *bh))
{
int status = 0;
@@ -63,7 +68,7 @@ static inline int ocfs2_read_block(struct inode *inode, u64 off,
goto bail;
}
- status = ocfs2_read_blocks(inode, off, 1, bh, 0);
+ status = ocfs2_read_blocks(inode, off, 1, bh, 0, validate);
bail:
return status;
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 6ebaa58e2c0..04697ba7f73 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -854,7 +854,7 @@ static int o2hb_thread(void *data)
while (!kthread_should_stop() && !reg->hr_unclean_stop) {
/* We track the time spent inside
- * o2hb_do_disk_heartbeat so that we avoid more then
+ * o2hb_do_disk_heartbeat so that we avoid more than
* hr_timeout_ms between disk writes. On busy systems
* this should result in a heartbeat which is less
* likely to time itself out. */
diff --git a/fs/ocfs2/cluster/masklog.c b/fs/ocfs2/cluster/masklog.c
index d8a0cb92cef..96df5416993 100644
--- a/fs/ocfs2/cluster/masklog.c
+++ b/fs/ocfs2/cluster/masklog.c
@@ -110,6 +110,7 @@ static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
define_mask(QUORUM),
define_mask(EXPORT),
define_mask(XATTR),
+ define_mask(QUOTA),
define_mask(ERROR),
define_mask(NOTICE),
define_mask(KTHREAD),
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index 57670c68047..7e72a81bc2d 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -113,6 +113,7 @@
#define ML_QUORUM 0x0000000008000000ULL /* net connection quorum */
#define ML_EXPORT 0x0000000010000000ULL /* ocfs2 export operations */
#define ML_XATTR 0x0000000020000000ULL /* ocfs2 extended attributes */
+#define ML_QUOTA 0x0000000040000000ULL /* ocfs2 quota operations */
/* bits that are infrequently given and frequently matched in the high word */
#define ML_ERROR 0x0000000100000000ULL /* sent to KERN_ERR */
#define ML_NOTICE 0x0000000200000000ULL /* setn to KERN_NOTICE */
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 026e6eb8518..f2c4098cf33 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -40,6 +40,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/highmem.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_NAMEI
#include <cluster/masklog.h>
@@ -47,6 +48,7 @@
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dir.h"
#include "dlmglue.h"
#include "extent_map.h"
@@ -82,47 +84,72 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
struct ocfs2_alloc_context *meta_ac,
struct buffer_head **new_bh);
-static struct buffer_head *ocfs2_bread(struct inode *inode,
- int block, int *err, int reada)
+/*
+ * These are distinct checks because future versions of the file system will
+ * want to have a trailing dirent structure independent of indexing.
+ */
+static int ocfs2_dir_has_trailer(struct inode *dir)
{
- struct buffer_head *bh = NULL;
- int tmperr;
- u64 p_blkno;
- int readflags = 0;
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return 0;
- if (reada)
- readflags |= OCFS2_BH_READAHEAD;
+ return ocfs2_meta_ecc(OCFS2_SB(dir->i_sb));
+}
- if (((u64)block << inode->i_sb->s_blocksize_bits) >=
- i_size_read(inode)) {
- BUG_ON(!reada);
- return NULL;
- }
+static int ocfs2_supports_dir_trailer(struct ocfs2_super *osb)
+{
+ return ocfs2_meta_ecc(osb);
+}
- down_read(&OCFS2_I(inode)->ip_alloc_sem);
- tmperr = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL,
- NULL);
- up_read(&OCFS2_I(inode)->ip_alloc_sem);
- if (tmperr < 0) {
- mlog_errno(tmperr);
- goto fail;
- }
+static inline unsigned int ocfs2_dir_trailer_blk_off(struct super_block *sb)
+{
+ return sb->s_blocksize - sizeof(struct ocfs2_dir_block_trailer);
+}
- tmperr = ocfs2_read_blocks(inode, p_blkno, 1, &bh, readflags);
- if (tmperr < 0)
- goto fail;
+#define ocfs2_trailer_from_bh(_bh, _sb) ((struct ocfs2_dir_block_trailer *) ((_bh)->b_data + ocfs2_dir_trailer_blk_off((_sb))))
- tmperr = 0;
+/* XXX ocfs2_block_dqtrailer() is similar but not quite - can we make
+ * them more consistent? */
+struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize,
+ void *data)
+{
+ char *p = data;
- *err = 0;
- return bh;
+ p += blocksize - sizeof(struct ocfs2_dir_block_trailer);
+ return (struct ocfs2_dir_block_trailer *)p;
+}
-fail:
- brelse(bh);
- bh = NULL;
+/*
+ * XXX: This is executed once on every dirent. We should consider optimizing
+ * it.
+ */
+static int ocfs2_skip_dir_trailer(struct inode *dir,
+ struct ocfs2_dir_entry *de,
+ unsigned long offset,
+ unsigned long blklen)
+{
+ unsigned long toff = blklen - sizeof(struct ocfs2_dir_block_trailer);
- *err = -EIO;
- return NULL;
+ if (!ocfs2_dir_has_trailer(dir))
+ return 0;
+
+ if (offset != toff)
+ return 0;
+
+ return 1;
+}
+
+static void ocfs2_init_dir_trailer(struct inode *inode,
+ struct buffer_head *bh)
+{
+ struct ocfs2_dir_block_trailer *trailer;
+
+ trailer = ocfs2_trailer_from_bh(bh, inode->i_sb);
+ strcpy(trailer->db_signature, OCFS2_DIR_TRAILER_SIGNATURE);
+ trailer->db_compat_rec_len =
+ cpu_to_le16(sizeof(struct ocfs2_dir_block_trailer));
+ trailer->db_parent_dinode = cpu_to_le64(OCFS2_I(inode)->ip_blkno);
+ trailer->db_blkno = cpu_to_le64(bh->b_blocknr);
}
/*
@@ -231,7 +258,7 @@ static struct buffer_head *ocfs2_find_entry_id(const char *name,
struct ocfs2_dinode *di;
struct ocfs2_inline_data *data;
- ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(dir, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -250,6 +277,108 @@ out:
return NULL;
}
+static int ocfs2_validate_dir_block(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_dir_block_trailer *trailer =
+ ocfs2_trailer_from_bh(bh, sb);
+
+
+ /*
+ * We don't validate dirents here, that's handled
+ * in-place when the code walks them.
+ */
+ mlog(0, "Validating dirblock %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ *
+ * Note that we are safe to call this even if the directory
+ * doesn't have a trailer. Filesystems without metaecc will do
+ * nothing, and filesystems with it will have one.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &trailer->db_check);
+ if (rc)
+ mlog(ML_ERROR, "Checksum failed for dinode %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ return rc;
+}
+
+/*
+ * This function forces all errors to -EIO for consistency with its
+ * predecessor, ocfs2_bread(). We haven't audited what returning the
+ * real error codes would do to callers. We log the real codes with
+ * mlog_errno() before we squash them.
+ */
+static int ocfs2_read_dir_block(struct inode *inode, u64 v_block,
+ struct buffer_head **bh, int flags)
+{
+ int rc = 0;
+ struct buffer_head *tmp = *bh;
+ struct ocfs2_dir_block_trailer *trailer;
+
+ rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, flags,
+ ocfs2_validate_dir_block);
+ if (rc) {
+ mlog_errno(rc);
+ goto out;
+ }
+
+ /*
+ * We check the trailer here rather than in
+ * ocfs2_validate_dir_block() because that function doesn't have
+ * the inode to test.
+ */
+ if (!(flags & OCFS2_BH_READAHEAD) &&
+ ocfs2_dir_has_trailer(inode)) {
+ trailer = ocfs2_trailer_from_bh(tmp, inode->i_sb);
+ if (!OCFS2_IS_VALID_DIR_TRAILER(trailer)) {
+ rc = -EINVAL;
+ ocfs2_error(inode->i_sb,
+ "Invalid dirblock #%llu: "
+ "signature = %.*s\n",
+ (unsigned long long)tmp->b_blocknr, 7,
+ trailer->db_signature);
+ goto out;
+ }
+ if (le64_to_cpu(trailer->db_blkno) != tmp->b_blocknr) {
+ rc = -EINVAL;
+ ocfs2_error(inode->i_sb,
+ "Directory block #%llu has an invalid "
+ "db_blkno of %llu",
+ (unsigned long long)tmp->b_blocknr,
+ (unsigned long long)le64_to_cpu(trailer->db_blkno));
+ goto out;
+ }
+ if (le64_to_cpu(trailer->db_parent_dinode) !=
+ OCFS2_I(inode)->ip_blkno) {
+ rc = -EINVAL;
+ ocfs2_error(inode->i_sb,
+ "Directory block #%llu on dinode "
+ "#%llu has an invalid parent_dinode "
+ "of %llu",
+ (unsigned long long)tmp->b_blocknr,
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (unsigned long long)le64_to_cpu(trailer->db_blkno));
+ goto out;
+ }
+ }
+
+ /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */
+ if (!*bh)
+ *bh = tmp;
+
+out:
+ return rc ? -EIO : 0;
+}
+
static struct buffer_head *ocfs2_find_entry_el(const char *name, int namelen,
struct inode *dir,
struct ocfs2_dir_entry **res_dir)
@@ -296,15 +425,17 @@ restart:
}
num++;
- bh = ocfs2_bread(dir, b++, &err, 1);
+ bh = NULL;
+ err = ocfs2_read_dir_block(dir, b++, &bh,
+ OCFS2_BH_READAHEAD);
bh_use[ra_max] = bh;
}
}
if ((bh = bh_use[ra_ptr++]) == NULL)
goto next;
- if (ocfs2_read_block(dir, block, &bh)) {
+ if (ocfs2_read_dir_block(dir, block, &bh, 0)) {
/* read error, skip block & hope for the best.
- * ocfs2_read_block() has released the bh. */
+ * ocfs2_read_dir_block() has released the bh. */
ocfs2_error(dir->i_sb, "reading directory %llu, "
"offset %lu\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno,
@@ -381,14 +512,18 @@ int ocfs2_update_entry(struct inode *dir, handle_t *handle,
struct inode *new_entry_inode)
{
int ret;
+ ocfs2_journal_access_func access = ocfs2_journal_access_db;
/*
* The same code works fine for both inline-data and extent
- * based directories, so no need to split this up.
+ * based directories, so no need to split this up. The only
+ * difference is the journal_access function.
*/
- ret = ocfs2_journal_access(handle, dir, de_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ access = ocfs2_journal_access_di;
+
+ ret = access(handle, dir, de_bh, OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -410,9 +545,13 @@ static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
{
struct ocfs2_dir_entry *de, *pde;
int i, status = -ENOENT;
+ ocfs2_journal_access_func access = ocfs2_journal_access_db;
mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p)\n", handle, dir, de_del, bh);
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ access = ocfs2_journal_access_di;
+
i = 0;
pde = NULL;
de = (struct ocfs2_dir_entry *) first_de;
@@ -423,8 +562,8 @@ static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
goto bail;
}
if (de == de_del) {
- status = ocfs2_journal_access(handle, dir, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = access(handle, dir, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
status = -EIO;
mlog_errno(status);
@@ -458,7 +597,7 @@ static inline int ocfs2_delete_entry_id(handle_t *handle,
struct ocfs2_dinode *di;
struct ocfs2_inline_data *data;
- ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(dir, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -576,6 +715,16 @@ int __ocfs2_add_entry(handle_t *handle,
goto bail;
}
+ /* We're guaranteed that we should have space, so we
+ * can't possibly have hit the trailer...right? */
+ mlog_bug_on_msg(ocfs2_skip_dir_trailer(dir, de, offset, size),
+ "Hit dir trailer trying to insert %.*s "
+ "(namelen %d) into directory %llu. "
+ "offset is %lu, trailer offset is %d\n",
+ namelen, name, namelen,
+ (unsigned long long)parent_fe_bh->b_blocknr,
+ offset, ocfs2_dir_trailer_blk_off(dir->i_sb));
+
if (ocfs2_dirent_would_fit(de, rec_len)) {
dir->i_mtime = dir->i_ctime = CURRENT_TIME;
retval = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh);
@@ -584,8 +733,14 @@ int __ocfs2_add_entry(handle_t *handle,
goto bail;
}
- status = ocfs2_journal_access(handle, dir, insert_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ if (insert_bh == parent_fe_bh)
+ status = ocfs2_journal_access_di(handle, dir,
+ insert_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ else
+ status = ocfs2_journal_access_db(handle, dir,
+ insert_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
/* By now the buffer is marked for journaling */
offset += le16_to_cpu(de->rec_len);
if (le64_to_cpu(de->inode)) {
@@ -611,6 +766,7 @@ int __ocfs2_add_entry(handle_t *handle,
retval = 0;
goto bail;
}
+
offset += le16_to_cpu(de->rec_len);
de = (struct ocfs2_dir_entry *) ((char *) de + le16_to_cpu(de->rec_len));
}
@@ -636,7 +792,7 @@ static int ocfs2_dir_foreach_blk_id(struct inode *inode,
struct ocfs2_inline_data *data;
struct ocfs2_dir_entry *de;
- ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(inode, &di_bh);
if (ret) {
mlog(ML_ERROR, "Unable to read inode block for dir %llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
@@ -724,7 +880,6 @@ static int ocfs2_dir_foreach_blk_el(struct inode *inode,
int i, stored;
struct buffer_head * bh, * tmp;
struct ocfs2_dir_entry * de;
- int err;
struct super_block * sb = inode->i_sb;
unsigned int ra_sectors = 16;
@@ -735,12 +890,8 @@ static int ocfs2_dir_foreach_blk_el(struct inode *inode,
while (!error && !stored && *f_pos < i_size_read(inode)) {
blk = (*f_pos) >> sb->s_blocksize_bits;
- bh = ocfs2_bread(inode, blk, &err, 0);
- if (!bh) {
- mlog(ML_ERROR,
- "directory #%llu contains a hole at offset %lld\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno,
- *f_pos);
+ if (ocfs2_read_dir_block(inode, blk, &bh, 0)) {
+ /* Skip the corrupt dirblock and keep trying */
*f_pos += sb->s_blocksize - offset;
continue;
}
@@ -754,8 +905,10 @@ static int ocfs2_dir_foreach_blk_el(struct inode *inode,
|| (((last_ra_blk - blk) << 9) <= (ra_sectors / 2))) {
for (i = ra_sectors >> (sb->s_blocksize_bits - 9);
i > 0; i--) {
- tmp = ocfs2_bread(inode, ++blk, &err, 1);
- brelse(tmp);
+ tmp = NULL;
+ if (!ocfs2_read_dir_block(inode, ++blk, &tmp,
+ OCFS2_BH_READAHEAD))
+ brelse(tmp);
}
last_ra_blk = blk;
ra_sectors = 8;
@@ -828,6 +981,7 @@ revalidate:
}
offset = 0;
brelse(bh);
+ bh = NULL;
}
stored = 0;
@@ -1050,9 +1204,15 @@ int ocfs2_empty_dir(struct inode *inode)
return !priv.seen_other;
}
-static void ocfs2_fill_initial_dirents(struct inode *inode,
- struct inode *parent,
- char *start, unsigned int size)
+/*
+ * Fills "." and ".." dirents in a new directory block. Returns dirent for
+ * "..", which might be used during creation of a directory with a trailing
+ * header. It is otherwise safe to ignore the return code.
+ */
+static struct ocfs2_dir_entry *ocfs2_fill_initial_dirents(struct inode *inode,
+ struct inode *parent,
+ char *start,
+ unsigned int size)
{
struct ocfs2_dir_entry *de = (struct ocfs2_dir_entry *)start;
@@ -1069,6 +1229,8 @@ static void ocfs2_fill_initial_dirents(struct inode *inode,
de->name_len = 2;
strcpy(de->name, "..");
ocfs2_set_de_type(de, S_IFDIR);
+
+ return de;
}
/*
@@ -1086,8 +1248,8 @@ static int ocfs2_fill_new_dir_id(struct ocfs2_super *osb,
struct ocfs2_inline_data *data = &di->id2.i_data;
unsigned int size = le16_to_cpu(data->id_count);
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -1121,10 +1283,15 @@ static int ocfs2_fill_new_dir_el(struct ocfs2_super *osb,
struct ocfs2_alloc_context *data_ac)
{
int status;
+ unsigned int size = osb->sb->s_blocksize;
struct buffer_head *new_bh = NULL;
+ struct ocfs2_dir_entry *de;
mlog_entry_void();
+ if (ocfs2_supports_dir_trailer(osb))
+ size = ocfs2_dir_trailer_blk_off(parent->i_sb);
+
status = ocfs2_do_extend_dir(osb->sb, handle, inode, fe_bh,
data_ac, NULL, &new_bh);
if (status < 0) {
@@ -1134,16 +1301,17 @@ static int ocfs2_fill_new_dir_el(struct ocfs2_super *osb,
ocfs2_set_new_buffer_uptodate(inode, new_bh);
- status = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_db(handle, inode, new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
memset(new_bh->b_data, 0, osb->sb->s_blocksize);
- ocfs2_fill_initial_dirents(inode, parent, new_bh->b_data,
- osb->sb->s_blocksize);
+ de = ocfs2_fill_initial_dirents(inode, parent, new_bh->b_data, size);
+ if (ocfs2_supports_dir_trailer(osb))
+ ocfs2_init_dir_trailer(inode, new_bh);
status = ocfs2_journal_dirty(handle, new_bh);
if (status < 0) {
@@ -1184,13 +1352,27 @@ int ocfs2_fill_new_dir(struct ocfs2_super *osb,
data_ac);
}
+/*
+ * Expand rec_len of the rightmost dirent in a directory block so that it
+ * contains the end of our valid space for dirents. We do this during
+ * expansion from an inline directory to one with extents. The first dir block
+ * in that case is taken from the inline data portion of the inode block.
+ *
+ * We add the dir trailer if this filesystem wants it.
+ */
static void ocfs2_expand_last_dirent(char *start, unsigned int old_size,
- unsigned int new_size)
+ struct super_block *sb)
{
struct ocfs2_dir_entry *de;
struct ocfs2_dir_entry *prev_de;
char *de_buf, *limit;
- unsigned int bytes = new_size - old_size;
+ unsigned int new_size = sb->s_blocksize;
+ unsigned int bytes;
+
+ if (ocfs2_supports_dir_trailer(OCFS2_SB(sb)))
+ new_size = ocfs2_dir_trailer_blk_off(sb);
+
+ bytes = new_size - old_size;
limit = start + old_size;
de_buf = start;
@@ -1216,9 +1398,9 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
unsigned int blocks_wanted,
struct buffer_head **first_block_bh)
{
- int ret, credits = OCFS2_INLINE_TO_EXTENTS_CREDITS;
u32 alloc, bit_off, len;
struct super_block *sb = dir->i_sb;
+ int ret, credits = ocfs2_inline_to_extents_credits(sb);
u64 blkno, bytes = blocks_wanted << sb->s_blocksize_bits;
struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
struct ocfs2_inode_info *oi = OCFS2_I(dir);
@@ -1227,6 +1409,7 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
handle_t *handle;
struct ocfs2_extent_tree et;
+ int did_quota = 0;
ocfs2_init_dinode_extent_tree(&et, dir, di_bh);
@@ -1264,6 +1447,12 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
goto out_sem;
}
+ if (vfs_dq_alloc_space_nodirty(dir,
+ ocfs2_clusters_to_bytes(osb->sb, alloc))) {
+ ret = -EDQUOT;
+ goto out_commit;
+ }
+ did_quota = 1;
/*
* Try to claim as many clusters as the bitmap can give though
* if we only get one now, that's enough to continue. The rest
@@ -1290,8 +1479,8 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
ocfs2_set_new_buffer_uptodate(dir, dirdata_bh);
- ret = ocfs2_journal_access(handle, dir, dirdata_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_db(handle, dir, dirdata_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -1300,8 +1489,9 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
memcpy(dirdata_bh->b_data, di->id2.i_data.id_data, i_size_read(dir));
memset(dirdata_bh->b_data + i_size_read(dir), 0,
sb->s_blocksize - i_size_read(dir));
- ocfs2_expand_last_dirent(dirdata_bh->b_data, i_size_read(dir),
- sb->s_blocksize);
+ ocfs2_expand_last_dirent(dirdata_bh->b_data, i_size_read(dir), sb);
+ if (ocfs2_supports_dir_trailer(osb))
+ ocfs2_init_dir_trailer(dir, dirdata_bh);
ret = ocfs2_journal_dirty(handle, dirdata_bh);
if (ret) {
@@ -1317,8 +1507,8 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
* We let the later dirent insert modify c/mtime - to the user
* the data hasn't changed.
*/
- ret = ocfs2_journal_access(handle, dir, di_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_di(handle, dir, di_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -1386,6 +1576,9 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
dirdata_bh = NULL;
out_commit:
+ if (ret < 0 && did_quota)
+ vfs_dq_free_space_nodirty(dir,
+ ocfs2_clusters_to_bytes(osb->sb, 2));
ocfs2_commit_trans(osb, handle);
out_sem:
@@ -1410,7 +1603,7 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
struct buffer_head **new_bh)
{
int status;
- int extend;
+ int extend, did_quota = 0;
u64 p_blkno, v_blkno;
spin_lock(&OCFS2_I(dir)->ip_lock);
@@ -1420,6 +1613,13 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
if (extend) {
u32 offset = OCFS2_I(dir)->ip_clusters;
+ if (vfs_dq_alloc_space_nodirty(dir,
+ ocfs2_clusters_to_bytes(sb, 1))) {
+ status = -EDQUOT;
+ goto bail;
+ }
+ did_quota = 1;
+
status = ocfs2_add_inode_data(OCFS2_SB(sb), dir, &offset,
1, 0, parent_fe_bh, handle,
data_ac, meta_ac, NULL);
@@ -1445,6 +1645,8 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
}
status = 0;
bail:
+ if (did_quota && status < 0)
+ vfs_dq_free_space_nodirty(dir, ocfs2_clusters_to_bytes(sb, 1));
mlog_exit(status);
return status;
}
@@ -1569,16 +1771,22 @@ do_extend:
ocfs2_set_new_buffer_uptodate(dir, new_bh);
- status = ocfs2_journal_access(handle, dir, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_db(handle, dir, new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
memset(new_bh->b_data, 0, sb->s_blocksize);
+
de = (struct ocfs2_dir_entry *) new_bh->b_data;
de->inode = 0;
- de->rec_len = cpu_to_le16(sb->s_blocksize);
+ if (ocfs2_dir_has_trailer(dir)) {
+ de->rec_len = cpu_to_le16(ocfs2_dir_trailer_blk_off(sb));
+ ocfs2_init_dir_trailer(dir, new_bh);
+ } else {
+ de->rec_len = cpu_to_le16(sb->s_blocksize);
+ }
status = ocfs2_journal_dirty(handle, new_bh);
if (status < 0) {
mlog_errno(status);
@@ -1620,11 +1828,21 @@ static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
unsigned int *blocks_wanted)
{
int ret;
+ struct super_block *sb = dir->i_sb;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct ocfs2_dir_entry *de, *last_de = NULL;
char *de_buf, *limit;
unsigned long offset = 0;
- unsigned int rec_len, new_rec_len;
+ unsigned int rec_len, new_rec_len, free_space = dir->i_sb->s_blocksize;
+
+ /*
+ * This calculates how many free bytes we'd have in block zero, should
+ * this function force expansion to an extent tree.
+ */
+ if (ocfs2_supports_dir_trailer(OCFS2_SB(sb)))
+ free_space = ocfs2_dir_trailer_blk_off(sb) - i_size_read(dir);
+ else
+ free_space = dir->i_sb->s_blocksize - i_size_read(dir);
de_buf = di->id2.i_data.id_data;
limit = de_buf + i_size_read(dir);
@@ -1641,6 +1859,11 @@ static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
ret = -EEXIST;
goto out;
}
+ /*
+ * No need to check for a trailing dirent record here as
+ * they're not used for inline dirs.
+ */
+
if (ocfs2_dirent_would_fit(de, rec_len)) {
/* Ok, we found a spot. Return this bh and let
* the caller actually fill it in. */
@@ -1661,7 +1884,7 @@ static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
* dirent can be found.
*/
*blocks_wanted = 1;
- new_rec_len = le16_to_cpu(last_de->rec_len) + (dir->i_sb->s_blocksize - i_size_read(dir));
+ new_rec_len = le16_to_cpu(last_de->rec_len) + free_space;
if (new_rec_len < (rec_len + OCFS2_DIR_REC_LEN(last_de->name_len)))
*blocks_wanted = 2;
@@ -1679,9 +1902,10 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
struct ocfs2_dir_entry *de;
struct super_block *sb = dir->i_sb;
int status;
+ int blocksize = dir->i_sb->s_blocksize;
- bh = ocfs2_bread(dir, 0, &status, 0);
- if (!bh) {
+ status = ocfs2_read_dir_block(dir, 0, &bh, 0);
+ if (status) {
mlog_errno(status);
goto bail;
}
@@ -1702,11 +1926,10 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
status = -ENOSPC;
goto bail;
}
- bh = ocfs2_bread(dir,
- offset >> sb->s_blocksize_bits,
- &status,
- 0);
- if (!bh) {
+ status = ocfs2_read_dir_block(dir,
+ offset >> sb->s_blocksize_bits,
+ &bh, 0);
+ if (status) {
mlog_errno(status);
goto bail;
}
@@ -1721,6 +1944,11 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
status = -EEXIST;
goto bail;
}
+
+ if (ocfs2_skip_dir_trailer(dir, de, offset % blocksize,
+ blocksize))
+ goto next;
+
if (ocfs2_dirent_would_fit(de, rec_len)) {
/* Ok, we found a spot. Return this bh and let
* the caller actually fill it in. */
@@ -1729,6 +1957,7 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
status = 0;
goto bail;
}
+next:
offset += le16_to_cpu(de->rec_len);
de = (struct ocfs2_dir_entry *)((char *) de + le16_to_cpu(de->rec_len));
}
diff --git a/fs/ocfs2/dir.h b/fs/ocfs2/dir.h
index ce48b9080d8..c511e2e18e9 100644
--- a/fs/ocfs2/dir.h
+++ b/fs/ocfs2/dir.h
@@ -83,4 +83,6 @@ int ocfs2_fill_new_dir(struct ocfs2_super *osb,
struct buffer_head *fe_bh,
struct ocfs2_alloc_context *data_ac);
+struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize,
+ void *data);
#endif /* OCFS2_DIR_H */
diff --git a/fs/ocfs2/dlm/dlmast.c b/fs/ocfs2/dlm/dlmast.c
index 644bee55d8b..d07ddbe4b28 100644
--- a/fs/ocfs2/dlm/dlmast.c
+++ b/fs/ocfs2/dlm/dlmast.c
@@ -275,6 +275,7 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
struct list_head *iter, *head=NULL;
u64 cookie;
u32 flags;
+ u8 node;
if (!dlm_grab(dlm)) {
dlm_error(DLM_REJECTED);
@@ -286,18 +287,21 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
name = past->name;
locklen = past->namelen;
- cookie = be64_to_cpu(past->cookie);
+ cookie = past->cookie;
flags = be32_to_cpu(past->flags);
+ node = past->node_idx;
if (locklen > DLM_LOCKID_NAME_MAX) {
ret = DLM_IVBUFLEN;
- mlog(ML_ERROR, "Invalid name length in proxy ast handler!\n");
+ mlog(ML_ERROR, "Invalid name length (%d) in proxy ast "
+ "handler!\n", locklen);
goto leave;
}
if ((flags & (LKM_PUT_LVB|LKM_GET_LVB)) ==
(LKM_PUT_LVB|LKM_GET_LVB)) {
- mlog(ML_ERROR, "both PUT and GET lvb specified\n");
+ mlog(ML_ERROR, "Both PUT and GET lvb specified, (0x%x)\n",
+ flags);
ret = DLM_BADARGS;
goto leave;
}
@@ -310,22 +314,21 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
if (past->type != DLM_AST &&
past->type != DLM_BAST) {
mlog(ML_ERROR, "Unknown ast type! %d, cookie=%u:%llu"
- "name=%.*s\n", past->type,
- dlm_get_lock_cookie_node(cookie),
- dlm_get_lock_cookie_seq(cookie),
- locklen, name);
+ "name=%.*s, node=%u\n", past->type,
+ dlm_get_lock_cookie_node(be64_to_cpu(cookie)),
+ dlm_get_lock_cookie_seq(be64_to_cpu(cookie)),
+ locklen, name, node);
ret = DLM_IVLOCKID;
goto leave;
}
res = dlm_lookup_lockres(dlm, name, locklen);
if (!res) {
- mlog(0, "got %sast for unknown lockres! "
- "cookie=%u:%llu, name=%.*s, namelen=%u\n",
- past->type == DLM_AST ? "" : "b",
- dlm_get_lock_cookie_node(cookie),
- dlm_get_lock_cookie_seq(cookie),
- locklen, name, locklen);
+ mlog(0, "Got %sast for unknown lockres! cookie=%u:%llu, "
+ "name=%.*s, node=%u\n", (past->type == DLM_AST ? "" : "b"),
+ dlm_get_lock_cookie_node(be64_to_cpu(cookie)),
+ dlm_get_lock_cookie_seq(be64_to_cpu(cookie)),
+ locklen, name, node);
ret = DLM_IVLOCKID;
goto leave;
}
@@ -337,12 +340,12 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
spin_lock(&res->spinlock);
if (res->state & DLM_LOCK_RES_RECOVERING) {
- mlog(0, "responding with DLM_RECOVERING!\n");
+ mlog(0, "Responding with DLM_RECOVERING!\n");
ret = DLM_RECOVERING;
goto unlock_out;
}
if (res->state & DLM_LOCK_RES_MIGRATING) {
- mlog(0, "responding with DLM_MIGRATING!\n");
+ mlog(0, "Responding with DLM_MIGRATING!\n");
ret = DLM_MIGRATING;
goto unlock_out;
}
@@ -351,7 +354,7 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
lock = NULL;
list_for_each(iter, head) {
lock = list_entry (iter, struct dlm_lock, list);
- if (be64_to_cpu(lock->ml.cookie) == cookie)
+ if (lock->ml.cookie == cookie)
goto do_ast;
}
@@ -363,15 +366,15 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
list_for_each(iter, head) {
lock = list_entry (iter, struct dlm_lock, list);
- if (be64_to_cpu(lock->ml.cookie) == cookie)
+ if (lock->ml.cookie == cookie)
goto do_ast;
}
- mlog(0, "got %sast for unknown lock! cookie=%u:%llu, "
- "name=%.*s, namelen=%u\n", past->type == DLM_AST ? "" : "b",
- dlm_get_lock_cookie_node(cookie),
- dlm_get_lock_cookie_seq(cookie),
- locklen, name, locklen);
+ mlog(0, "Got %sast for unknown lock! cookie=%u:%llu, name=%.*s, "
+ "node=%u\n", past->type == DLM_AST ? "" : "b",
+ dlm_get_lock_cookie_node(be64_to_cpu(cookie)),
+ dlm_get_lock_cookie_seq(be64_to_cpu(cookie)),
+ locklen, name, node);
ret = DLM_NORMAL;
unlock_out:
@@ -383,8 +386,8 @@ do_ast:
if (past->type == DLM_AST) {
/* do not alter lock refcount. switching lists. */
list_move_tail(&lock->list, &res->granted);
- mlog(0, "ast: adding to granted list... type=%d, "
- "convert_type=%d\n", lock->ml.type, lock->ml.convert_type);
+ mlog(0, "ast: Adding to granted list... type=%d, "
+ "convert_type=%d\n", lock->ml.type, lock->ml.convert_type);
if (lock->ml.convert_type != LKM_IVMODE) {
lock->ml.type = lock->ml.convert_type;
lock->ml.convert_type = LKM_IVMODE;
@@ -408,7 +411,6 @@ do_ast:
dlm_do_local_bast(dlm, res, lock, past->blocked_type);
leave:
-
if (res)
dlm_lockres_put(res);
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index d5a86fb81a4..bb53714813a 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -140,6 +140,7 @@ struct dlm_ctxt
unsigned int purge_count;
spinlock_t spinlock;
spinlock_t ast_lock;
+ spinlock_t track_lock;
char *name;
u8 node_num;
u32 key;
@@ -316,6 +317,8 @@ struct dlm_lock_resource
* put on a list for the dlm thread to run. */
unsigned long last_used;
+ struct dlm_ctxt *dlm;
+
unsigned migration_pending:1;
atomic_t asts_reserved;
spinlock_t spinlock;
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index 1b81dcba175..b32f60a5acf 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -630,43 +630,38 @@ static void *lockres_seq_start(struct seq_file *m, loff_t *pos)
{
struct debug_lockres *dl = m->private;
struct dlm_ctxt *dlm = dl->dl_ctxt;
+ struct dlm_lock_resource *oldres = dl->dl_res;
struct dlm_lock_resource *res = NULL;
+ struct list_head *track_list;
- spin_lock(&dlm->spinlock);
+ spin_lock(&dlm->track_lock);
+ if (oldres)
+ track_list = &oldres->tracking;
+ else
+ track_list = &dlm->tracking_list;
- if (dl->dl_res) {
- list_for_each_entry(res, &dl->dl_res->tracking, tracking) {
- if (dl->dl_res) {
- dlm_lockres_put(dl->dl_res);
- dl->dl_res = NULL;
- }
- if (&res->tracking == &dlm->tracking_list) {
- mlog(0, "End of list found, %p\n", res);
- dl = NULL;
- break;
- }
+ list_for_each_entry(res, track_list, tracking) {
+ if (&res->tracking == &dlm->tracking_list)
+ res = NULL;
+ else
dlm_lockres_get(res);
- dl->dl_res = res;
- break;
- }
- } else {
- if (!list_empty(&dlm->tracking_list)) {
- list_for_each_entry(res, &dlm->tracking_list, tracking)
- break;
- dlm_lockres_get(res);
- dl->dl_res = res;
- } else
- dl = NULL;
+ break;
}
+ spin_unlock(&dlm->track_lock);
- if (dl) {
- spin_lock(&dl->dl_res->spinlock);
- dump_lockres(dl->dl_res, dl->dl_buf, dl->dl_len - 1);
- spin_unlock(&dl->dl_res->spinlock);
- }
+ if (oldres)
+ dlm_lockres_put(oldres);
- spin_unlock(&dlm->spinlock);
+ dl->dl_res = res;
+
+ if (res) {
+ spin_lock(&res->spinlock);
+ dump_lockres(res, dl->dl_buf, dl->dl_len - 1);
+ spin_unlock(&res->spinlock);
+ } else
+ dl = NULL;
+ /* passed to seq_show */
return dl;
}
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 63f8125824e..d8d578f4561 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -1550,6 +1550,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
spin_lock_init(&dlm->spinlock);
spin_lock_init(&dlm->master_lock);
spin_lock_init(&dlm->ast_lock);
+ spin_lock_init(&dlm->track_lock);
INIT_LIST_HEAD(&dlm->list);
INIT_LIST_HEAD(&dlm->dirty_list);
INIT_LIST_HEAD(&dlm->reco.resources);
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index 6f7a77d5402..1c9efb406a9 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -341,7 +341,6 @@ static struct inode *dlmfs_get_root_inode(struct super_block *sb)
inode->i_mode = mode;
inode->i_uid = current_fsuid();
inode->i_gid = current_fsgid();
- inode->i_blocks = 0;
inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
inc_nlink(inode);
@@ -367,7 +366,6 @@ static struct inode *dlmfs_get_inode(struct inode *parent,
inode->i_mode = mode;
inode->i_uid = current_fsuid();
inode->i_gid = current_fsgid();
- inode->i_blocks = 0;
inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 44f87caf368..54e182a27ca 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -505,8 +505,10 @@ void dlm_change_lockres_owner(struct dlm_ctxt *dlm,
static void dlm_lockres_release(struct kref *kref)
{
struct dlm_lock_resource *res;
+ struct dlm_ctxt *dlm;
res = container_of(kref, struct dlm_lock_resource, refs);
+ dlm = res->dlm;
/* This should not happen -- all lockres' have a name
* associated with them at init time. */
@@ -515,6 +517,7 @@ static void dlm_lockres_release(struct kref *kref)
mlog(0, "destroying lockres %.*s\n", res->lockname.len,
res->lockname.name);
+ spin_lock(&dlm->track_lock);
if (!list_empty(&res->tracking))
list_del_init(&res->tracking);
else {
@@ -522,6 +525,9 @@ static void dlm_lockres_release(struct kref *kref)
res->lockname.len, res->lockname.name);
dlm_print_one_lock_resource(res);
}
+ spin_unlock(&dlm->track_lock);
+
+ dlm_put(dlm);
if (!hlist_unhashed(&res->hash_node) ||
!list_empty(&res->granted) ||
@@ -595,6 +601,10 @@ static void dlm_init_lockres(struct dlm_ctxt *dlm,
res->migration_pending = 0;
res->inflight_locks = 0;
+ /* put in dlm_lockres_release */
+ dlm_grab(dlm);
+ res->dlm = dlm;
+
kref_init(&res->refs);
/* just for consistency */
@@ -722,14 +732,21 @@ lookup:
if (tmpres) {
int dropping_ref = 0;
+ spin_unlock(&dlm->spinlock);
+
spin_lock(&tmpres->spinlock);
+ /* We wait for the other thread that is mastering the resource */
+ if (tmpres->owner == DLM_LOCK_RES_OWNER_UNKNOWN) {
+ __dlm_wait_on_lockres(tmpres);
+ BUG_ON(tmpres->owner == DLM_LOCK_RES_OWNER_UNKNOWN);
+ }
+
if (tmpres->owner == dlm->node_num) {
BUG_ON(tmpres->state & DLM_LOCK_RES_DROPPING_REF);
dlm_lockres_grab_inflight_ref(dlm, tmpres);
} else if (tmpres->state & DLM_LOCK_RES_DROPPING_REF)
dropping_ref = 1;
spin_unlock(&tmpres->spinlock);
- spin_unlock(&dlm->spinlock);
/* wait until done messaging the master, drop our ref to allow
* the lockres to be purged, start over. */
@@ -2949,7 +2966,7 @@ static int dlm_do_migrate_request(struct dlm_ctxt *dlm,
struct dlm_node_iter *iter)
{
struct dlm_migrate_request migrate;
- int ret, status = 0;
+ int ret, skip, status = 0;
int nodenum;
memset(&migrate, 0, sizeof(migrate));
@@ -2966,12 +2983,27 @@ static int dlm_do_migrate_request(struct dlm_ctxt *dlm,
nodenum == new_master)
continue;
+ /* We could race exit domain. If exited, skip. */
+ spin_lock(&dlm->spinlock);
+ skip = (!test_bit(nodenum, dlm->domain_map));
+ spin_unlock(&dlm->spinlock);
+ if (skip) {
+ clear_bit(nodenum, iter->node_map);
+ continue;
+ }
+
ret = o2net_send_message(DLM_MIGRATE_REQUEST_MSG, dlm->key,
&migrate, sizeof(migrate), nodenum,
&status);
- if (ret < 0)
- mlog_errno(ret);
- else if (status < 0) {
+ if (ret < 0) {
+ mlog(0, "migrate_request returned %d!\n", ret);
+ if (!dlm_is_host_down(ret)) {
+ mlog(ML_ERROR, "unhandled error=%d!\n", ret);
+ BUG();
+ }
+ clear_bit(nodenum, iter->node_map);
+ ret = 0;
+ } else if (status < 0) {
mlog(0, "migrate request (node %u) returned %d!\n",
nodenum, status);
ret = status;
diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c
index 4060bb328bc..d1295203029 100644
--- a/fs/ocfs2/dlm/dlmthread.c
+++ b/fs/ocfs2/dlm/dlmthread.c
@@ -181,7 +181,8 @@ static int dlm_purge_lockres(struct dlm_ctxt *dlm,
spin_lock(&res->spinlock);
/* This ensures that clear refmap is sent after the set */
- __dlm_wait_on_lockres_flags(res, DLM_LOCK_RES_SETREF_INPROG);
+ __dlm_wait_on_lockres_flags(res, (DLM_LOCK_RES_SETREF_INPROG |
+ DLM_LOCK_RES_MIGRATING));
spin_unlock(&res->spinlock);
/* clear our bit from the master's refmap, ignore errors */
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 6e6cc0a2e5f..b0c4cadd4c4 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -32,6 +32,7 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/time.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_DLM_GLUE
#include <cluster/masklog.h>
@@ -51,6 +52,7 @@
#include "slot_map.h"
#include "super.h"
#include "uptodate.h"
+#include "quota.h"
#include "buffer_head_io.h"
@@ -68,6 +70,7 @@ struct ocfs2_mask_waiter {
static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres);
static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres);
static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres);
+static struct ocfs2_super *ocfs2_get_qinfo_osb(struct ocfs2_lock_res *lockres);
/*
* Return value from ->downconvert_worker functions.
@@ -102,6 +105,7 @@ static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres,
static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
+static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres);
#define mlog_meta_lvb(__level, __lockres) ocfs2_dump_meta_lvb_info(__level, __PRETTY_FUNCTION__, __LINE__, __lockres)
@@ -111,8 +115,7 @@ static void ocfs2_dump_meta_lvb_info(u64 level,
unsigned int line,
struct ocfs2_lock_res *lockres)
{
- struct ocfs2_meta_lvb *lvb =
- (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ struct ocfs2_meta_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
mlog(level, "LVB information for %s (called from %s:%u):\n",
lockres->l_name, function, line);
@@ -258,6 +261,12 @@ static struct ocfs2_lock_res_ops ocfs2_flock_lops = {
.flags = 0,
};
+static struct ocfs2_lock_res_ops ocfs2_qinfo_lops = {
+ .set_lvb = ocfs2_set_qinfo_lvb,
+ .get_osb = ocfs2_get_qinfo_osb,
+ .flags = LOCK_TYPE_REQUIRES_REFRESH | LOCK_TYPE_USES_LVB,
+};
+
static inline int ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres)
{
return lockres->l_type == OCFS2_LOCK_TYPE_META ||
@@ -279,6 +288,13 @@ static inline struct ocfs2_dentry_lock *ocfs2_lock_res_dl(struct ocfs2_lock_res
return (struct ocfs2_dentry_lock *)lockres->l_priv;
}
+static inline struct ocfs2_mem_dqinfo *ocfs2_lock_res_qinfo(struct ocfs2_lock_res *lockres)
+{
+ BUG_ON(lockres->l_type != OCFS2_LOCK_TYPE_QINFO);
+
+ return (struct ocfs2_mem_dqinfo *)lockres->l_priv;
+}
+
static inline struct ocfs2_super *ocfs2_get_lockres_osb(struct ocfs2_lock_res *lockres)
{
if (lockres->l_ops->get_osb)
@@ -507,6 +523,13 @@ static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres)
return OCFS2_SB(inode->i_sb);
}
+static struct ocfs2_super *ocfs2_get_qinfo_osb(struct ocfs2_lock_res *lockres)
+{
+ struct ocfs2_mem_dqinfo *info = lockres->l_priv;
+
+ return OCFS2_SB(info->dqi_gi.dqi_sb);
+}
+
static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres)
{
struct ocfs2_file_private *fp = lockres->l_priv;
@@ -609,6 +632,17 @@ void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
lockres->l_flags |= OCFS2_LOCK_NOCACHE;
}
+void ocfs2_qinfo_lock_res_init(struct ocfs2_lock_res *lockres,
+ struct ocfs2_mem_dqinfo *info)
+{
+ ocfs2_lock_res_init_once(lockres);
+ ocfs2_build_lock_name(OCFS2_LOCK_TYPE_QINFO, info->dqi_gi.dqi_type,
+ 0, lockres->l_name);
+ ocfs2_lock_res_init_common(OCFS2_SB(info->dqi_gi.dqi_sb), lockres,
+ OCFS2_LOCK_TYPE_QINFO, &ocfs2_qinfo_lops,
+ info);
+}
+
void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
{
mlog_entry_void();
@@ -1290,7 +1324,7 @@ again:
goto out;
}
- mlog(0, "lock %s, successfull return from ocfs2_dlm_lock\n",
+ mlog(0, "lock %s, successful return from ocfs2_dlm_lock\n",
lockres->l_name);
/* At this point we've gone inside the dlm and need to
@@ -1829,7 +1863,7 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
mlog_entry_void();
- lvb = (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
/*
* Invalidate the LVB of a deleted inode - this way other
@@ -1881,7 +1915,7 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
mlog_meta_lvb(0, lockres);
- lvb = (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
/* We're safe here without the lockres lock... */
spin_lock(&oi->ip_lock);
@@ -1916,8 +1950,7 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
static inline int ocfs2_meta_lvb_is_trustable(struct inode *inode,
struct ocfs2_lock_res *lockres)
{
- struct ocfs2_meta_lvb *lvb =
- (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ struct ocfs2_meta_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
if (lvb->lvb_version == OCFS2_LVB_VERSION
&& be32_to_cpu(lvb->lvb_igeneration) == inode->i_generation)
@@ -2024,7 +2057,7 @@ static int ocfs2_inode_lock_update(struct inode *inode,
} else {
/* Boo, we have to go to disk. */
/* read bh, cast, ocfs2_refresh_inode */
- status = ocfs2_read_block(inode, oi->ip_blkno, bh);
+ status = ocfs2_read_inode_block(inode, bh);
if (status < 0) {
mlog_errno(status);
goto bail_refresh;
@@ -2032,18 +2065,14 @@ static int ocfs2_inode_lock_update(struct inode *inode,
fe = (struct ocfs2_dinode *) (*bh)->b_data;
/* This is a good chance to make sure we're not
- * locking an invalid object.
+ * locking an invalid object. ocfs2_read_inode_block()
+ * already checked that the inode block is sane.
*
* We bug on a stale inode here because we checked
* above whether it was wiped from disk. The wiping
* node provides a guarantee that we receive that
* message and can mark the inode before dropping any
* locks associated with it. */
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe);
- status = -EIO;
- goto bail_refresh;
- }
mlog_bug_on_msg(inode->i_generation !=
le32_to_cpu(fe->i_generation),
"Invalid dinode %llu disk generation: %u "
@@ -2085,7 +2114,7 @@ static int ocfs2_assign_bh(struct inode *inode,
return 0;
}
- status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, ret_bh);
+ status = ocfs2_read_inode_block(inode, ret_bh);
if (status < 0)
mlog_errno(status);
@@ -2922,7 +2951,7 @@ static int ocfs2_drop_lock(struct ocfs2_super *osb,
ocfs2_dlm_dump_lksb(&lockres->l_lksb);
BUG();
}
- mlog(0, "lock %s, successfull return from ocfs2_dlm_unlock\n",
+ mlog(0, "lock %s, successful return from ocfs2_dlm_unlock\n",
lockres->l_name);
ocfs2_wait_on_busy_lock(lockres);
@@ -3449,6 +3478,117 @@ static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres,
return UNBLOCK_CONTINUE_POST;
}
+static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres)
+{
+ struct ocfs2_qinfo_lvb *lvb;
+ struct ocfs2_mem_dqinfo *oinfo = ocfs2_lock_res_qinfo(lockres);
+ struct mem_dqinfo *info = sb_dqinfo(oinfo->dqi_gi.dqi_sb,
+ oinfo->dqi_gi.dqi_type);
+
+ mlog_entry_void();
+
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
+ lvb->lvb_version = OCFS2_QINFO_LVB_VERSION;
+ lvb->lvb_bgrace = cpu_to_be32(info->dqi_bgrace);
+ lvb->lvb_igrace = cpu_to_be32(info->dqi_igrace);
+ lvb->lvb_syncms = cpu_to_be32(oinfo->dqi_syncms);
+ lvb->lvb_blocks = cpu_to_be32(oinfo->dqi_gi.dqi_blocks);
+ lvb->lvb_free_blk = cpu_to_be32(oinfo->dqi_gi.dqi_free_blk);
+ lvb->lvb_free_entry = cpu_to_be32(oinfo->dqi_gi.dqi_free_entry);
+
+ mlog_exit_void();
+}
+
+void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex)
+{
+ struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock;
+ struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb);
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
+
+ mlog_entry_void();
+ if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb))
+ ocfs2_cluster_unlock(osb, lockres, level);
+ mlog_exit_void();
+}
+
+static int ocfs2_refresh_qinfo(struct ocfs2_mem_dqinfo *oinfo)
+{
+ struct mem_dqinfo *info = sb_dqinfo(oinfo->dqi_gi.dqi_sb,
+ oinfo->dqi_gi.dqi_type);
+ struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock;
+ struct ocfs2_qinfo_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
+ struct buffer_head *bh = NULL;
+ struct ocfs2_global_disk_dqinfo *gdinfo;
+ int status = 0;
+
+ if (lvb->lvb_version == OCFS2_QINFO_LVB_VERSION) {
+ info->dqi_bgrace = be32_to_cpu(lvb->lvb_bgrace);
+ info->dqi_igrace = be32_to_cpu(lvb->lvb_igrace);
+ oinfo->dqi_syncms = be32_to_cpu(lvb->lvb_syncms);
+ oinfo->dqi_gi.dqi_blocks = be32_to_cpu(lvb->lvb_blocks);
+ oinfo->dqi_gi.dqi_free_blk = be32_to_cpu(lvb->lvb_free_blk);
+ oinfo->dqi_gi.dqi_free_entry =
+ be32_to_cpu(lvb->lvb_free_entry);
+ } else {
+ status = ocfs2_read_quota_block(oinfo->dqi_gqinode, 0, &bh);
+ if (status) {
+ mlog_errno(status);
+ goto bail;
+ }
+ gdinfo = (struct ocfs2_global_disk_dqinfo *)
+ (bh->b_data + OCFS2_GLOBAL_INFO_OFF);
+ info->dqi_bgrace = le32_to_cpu(gdinfo->dqi_bgrace);
+ info->dqi_igrace = le32_to_cpu(gdinfo->dqi_igrace);
+ oinfo->dqi_syncms = le32_to_cpu(gdinfo->dqi_syncms);
+ oinfo->dqi_gi.dqi_blocks = le32_to_cpu(gdinfo->dqi_blocks);
+ oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(gdinfo->dqi_free_blk);
+ oinfo->dqi_gi.dqi_free_entry =
+ le32_to_cpu(gdinfo->dqi_free_entry);
+ brelse(bh);
+ ocfs2_track_lock_refresh(lockres);
+ }
+
+bail:
+ return status;
+}
+
+/* Lock quota info, this function expects at least shared lock on the quota file
+ * so that we can safely refresh quota info from disk. */
+int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex)
+{
+ struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock;
+ struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb);
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
+ int status = 0;
+
+ mlog_entry_void();
+
+ /* On RO devices, locking really isn't needed... */
+ if (ocfs2_is_hard_readonly(osb)) {
+ if (ex)
+ status = -EROFS;
+ goto bail;
+ }
+ if (ocfs2_mount_local(osb))
+ goto bail;
+
+ status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+ if (!ocfs2_should_refresh_lock_res(lockres))
+ goto bail;
+ /* OK, we have the lock but we need to refresh the quota info */
+ status = ocfs2_refresh_qinfo(oinfo);
+ if (status)
+ ocfs2_qinfo_unlock(oinfo, ex);
+ ocfs2_complete_lock_res_refresh(lockres, status);
+bail:
+ mlog_exit(status);
+ return status;
+}
+
/*
* This is the filesystem locking protocol. It provides the lock handling
* hooks for the underlying DLM. It has a maximum version number.
diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h
index 2bb01f09c1b..3f8d9986b8e 100644
--- a/fs/ocfs2/dlmglue.h
+++ b/fs/ocfs2/dlmglue.h
@@ -49,6 +49,19 @@ struct ocfs2_meta_lvb {
__be32 lvb_reserved2;
};
+#define OCFS2_QINFO_LVB_VERSION 1
+
+struct ocfs2_qinfo_lvb {
+ __u8 lvb_version;
+ __u8 lvb_reserved[3];
+ __be32 lvb_bgrace;
+ __be32 lvb_igrace;
+ __be32 lvb_syncms;
+ __be32 lvb_blocks;
+ __be32 lvb_free_blk;
+ __be32 lvb_free_entry;
+};
+
/* ocfs2_inode_lock_full() 'arg_flags' flags */
/* don't wait on recovery. */
#define OCFS2_META_LOCK_RECOVERY (0x01)
@@ -69,6 +82,9 @@ void ocfs2_dentry_lock_res_init(struct ocfs2_dentry_lock *dl,
struct ocfs2_file_private;
void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
struct ocfs2_file_private *fp);
+struct ocfs2_mem_dqinfo;
+void ocfs2_qinfo_lock_res_init(struct ocfs2_lock_res *lockres,
+ struct ocfs2_mem_dqinfo *info);
void ocfs2_lock_res_free(struct ocfs2_lock_res *res);
int ocfs2_create_new_inode_locks(struct inode *inode);
int ocfs2_drop_inode_locks(struct inode *inode);
@@ -103,6 +119,9 @@ int ocfs2_dentry_lock(struct dentry *dentry, int ex);
void ocfs2_dentry_unlock(struct dentry *dentry, int ex);
int ocfs2_file_lock(struct file *file, int ex, int trylock);
void ocfs2_file_unlock(struct file *file);
+int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex);
+void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex);
+
void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres);
void ocfs2_simple_drop_lockres(struct ocfs2_super *osb,
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 2baedac5823..f2bb1a04d25 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -293,7 +293,7 @@ static int ocfs2_last_eb_is_empty(struct inode *inode,
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *el;
- ret = ocfs2_read_block(inode, last_eb_blk, &eb_bh);
+ ret = ocfs2_read_extent_block(inode, last_eb_blk, &eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -302,12 +302,6 @@ static int ocfs2_last_eb_is_empty(struct inode *inode,
eb = (struct ocfs2_extent_block *) eb_bh->b_data;
el = &eb->h_list;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- ret = -EROFS;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- goto out;
- }
-
if (el->l_tree_depth) {
ocfs2_error(inode->i_sb,
"Inode %lu has non zero tree depth in "
@@ -381,23 +375,16 @@ static int ocfs2_figure_hole_clusters(struct inode *inode,
if (le64_to_cpu(eb->h_next_leaf_blk) == 0ULL)
goto no_more_extents;
- ret = ocfs2_read_block(inode,
- le64_to_cpu(eb->h_next_leaf_blk),
- &next_eb_bh);
+ ret = ocfs2_read_extent_block(inode,
+ le64_to_cpu(eb->h_next_leaf_blk),
+ &next_eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
}
- next_eb = (struct ocfs2_extent_block *)next_eb_bh->b_data;
-
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(next_eb)) {
- ret = -EROFS;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, next_eb);
- goto out;
- }
+ next_eb = (struct ocfs2_extent_block *)next_eb_bh->b_data;
el = &next_eb->h_list;
-
i = ocfs2_search_for_hole_index(el, v_cluster);
}
@@ -630,7 +617,7 @@ int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
if (ret == 0)
goto out;
- ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(inode, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -819,3 +806,74 @@ out:
return ret;
}
+
+int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
+ struct buffer_head *bhs[], int flags,
+ int (*validate)(struct super_block *sb,
+ struct buffer_head *bh))
+{
+ int rc = 0;
+ u64 p_block, p_count;
+ int i, count, done = 0;
+
+ mlog_entry("(inode = %p, v_block = %llu, nr = %d, bhs = %p, "
+ "flags = %x, validate = %p)\n",
+ inode, (unsigned long long)v_block, nr, bhs, flags,
+ validate);
+
+ if (((v_block + nr - 1) << inode->i_sb->s_blocksize_bits) >=
+ i_size_read(inode)) {
+ BUG_ON(!(flags & OCFS2_BH_READAHEAD));
+ goto out;
+ }
+
+ while (done < nr) {
+ down_read(&OCFS2_I(inode)->ip_alloc_sem);
+ rc = ocfs2_extent_map_get_blocks(inode, v_block + done,
+ &p_block, &p_count, NULL);
+ up_read(&OCFS2_I(inode)->ip_alloc_sem);
+ if (rc) {
+ mlog_errno(rc);
+ break;
+ }
+
+ if (!p_block) {
+ rc = -EIO;
+ mlog(ML_ERROR,
+ "Inode #%llu contains a hole at offset %llu\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (unsigned long long)(v_block + done) <<
+ inode->i_sb->s_blocksize_bits);
+ break;
+ }
+
+ count = nr - done;
+ if (p_count < count)
+ count = p_count;
+
+ /*
+ * If the caller passed us bhs, they should have come
+ * from a previous readahead call to this function. Thus,
+ * they should have the right b_blocknr.
+ */
+ for (i = 0; i < count; i++) {
+ if (!bhs[done + i])
+ continue;
+ BUG_ON(bhs[done + i]->b_blocknr != (p_block + i));
+ }
+
+ rc = ocfs2_read_blocks(inode, p_block, count, bhs + done,
+ flags, validate);
+ if (rc) {
+ mlog_errno(rc);
+ break;
+ }
+ done += count;
+ }
+
+out:
+ mlog_exit(rc);
+ return rc;
+}
+
+
diff --git a/fs/ocfs2/extent_map.h b/fs/ocfs2/extent_map.h
index 1c4aa8b06f3..b7dd9731b46 100644
--- a/fs/ocfs2/extent_map.h
+++ b/fs/ocfs2/extent_map.h
@@ -57,4 +57,28 @@ int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster,
u32 *p_cluster, u32 *num_clusters,
struct ocfs2_extent_list *el);
+int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
+ struct buffer_head *bhs[], int flags,
+ int (*validate)(struct super_block *sb,
+ struct buffer_head *bh));
+static inline int ocfs2_read_virt_block(struct inode *inode, u64 v_block,
+ struct buffer_head **bh,
+ int (*validate)(struct super_block *sb,
+ struct buffer_head *bh))
+{
+ int status = 0;
+
+ if (bh == NULL) {
+ printk("ocfs2: bh == NULL\n");
+ status = -EINVAL;
+ goto bail;
+ }
+
+ status = ocfs2_read_virt_blocks(inode, v_block, 1, bh, 0, validate);
+
+bail:
+ return status;
+}
+
+
#endif /* _EXTENT_MAP_H */
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index e2570a3bc2b..a5887df2cd8 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -35,6 +35,7 @@
#include <linux/mount.h>
#include <linux/writeback.h>
#include <linux/falloc.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
@@ -56,6 +57,8 @@
#include "suballoc.h"
#include "super.h"
#include "xattr.h"
+#include "acl.h"
+#include "quota.h"
#include "buffer_head_io.h"
@@ -253,8 +256,8 @@ int ocfs2_update_inode_atime(struct inode *inode,
goto out;
}
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -303,9 +306,9 @@ bail:
return status;
}
-static int ocfs2_simple_size_update(struct inode *inode,
- struct buffer_head *di_bh,
- u64 new_i_size)
+int ocfs2_simple_size_update(struct inode *inode,
+ struct buffer_head *di_bh,
+ u64 new_i_size)
{
int ret;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
@@ -350,8 +353,8 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb,
goto out;
}
- status = ocfs2_journal_access(handle, inode, fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, inode, fe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto out_commit;
@@ -401,12 +404,9 @@ static int ocfs2_truncate_file(struct inode *inode,
(unsigned long long)OCFS2_I(inode)->ip_blkno,
(unsigned long long)new_i_size);
+ /* We trust di_bh because it comes from ocfs2_inode_lock(), which
+ * already validated it */
fe = (struct ocfs2_dinode *) di_bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe);
- status = -EIO;
- goto bail;
- }
mlog_bug_on_msg(le64_to_cpu(fe->i_size) != i_size_read(inode),
"Inode %llu, inode i_size = %lld != di "
@@ -536,6 +536,7 @@ static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
enum ocfs2_alloc_restarted why;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_extent_tree et;
+ int did_quota = 0;
mlog_entry("(clusters_to_add = %u)\n", clusters_to_add);
@@ -545,18 +546,12 @@ static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
*/
BUG_ON(mark_unwritten && !ocfs2_sparse_alloc(osb));
- status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &bh);
+ status = ocfs2_read_inode_block(inode, &bh);
if (status < 0) {
mlog_errno(status);
goto leave;
}
-
fe = (struct ocfs2_dinode *) bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe);
- status = -EIO;
- goto leave;
- }
restart_all:
BUG_ON(le32_to_cpu(fe->i_clusters) != OCFS2_I(inode)->ip_clusters);
@@ -585,11 +580,18 @@ restart_all:
}
restarted_transaction:
+ if (vfs_dq_alloc_space_nodirty(inode, ocfs2_clusters_to_bytes(osb->sb,
+ clusters_to_add))) {
+ status = -EDQUOT;
+ goto leave;
+ }
+ did_quota = 1;
+
/* reserve a write to the file entry early on - that we if we
* run out of credits in the allocation path, we can still
* update i_size. */
- status = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -622,6 +624,10 @@ restarted_transaction:
spin_lock(&OCFS2_I(inode)->ip_lock);
clusters_to_add -= (OCFS2_I(inode)->ip_clusters - prev_clusters);
spin_unlock(&OCFS2_I(inode)->ip_lock);
+ /* Release unused quota reservation */
+ vfs_dq_free_space(inode,
+ ocfs2_clusters_to_bytes(osb->sb, clusters_to_add));
+ did_quota = 0;
if (why != RESTART_NONE && clusters_to_add) {
if (why == RESTART_META) {
@@ -654,6 +660,9 @@ restarted_transaction:
OCFS2_I(inode)->ip_clusters, (long long)i_size_read(inode));
leave:
+ if (status < 0 && did_quota)
+ vfs_dq_free_space(inode,
+ ocfs2_clusters_to_bytes(osb->sb, clusters_to_add));
if (handle) {
ocfs2_commit_trans(osb, handle);
handle = NULL;
@@ -885,6 +894,9 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
struct ocfs2_super *osb = OCFS2_SB(sb);
struct buffer_head *bh = NULL;
handle_t *handle = NULL;
+ int locked[MAXQUOTAS] = {0, 0};
+ int credits, qtype;
+ struct ocfs2_mem_dqinfo *oinfo;
mlog_entry("(0x%p, '%.*s')\n", dentry,
dentry->d_name.len, dentry->d_name.name);
@@ -955,11 +967,47 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
}
}
- handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
- if (IS_ERR(handle)) {
- status = PTR_ERR(handle);
- mlog_errno(status);
- goto bail_unlock;
+ if ((attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
+ (attr->ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
+ credits = OCFS2_INODE_UPDATE_CREDITS;
+ if (attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid
+ && OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
+ oinfo = sb_dqinfo(sb, USRQUOTA)->dqi_priv;
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto bail_unlock;
+ credits += ocfs2_calc_qinit_credits(sb, USRQUOTA) +
+ ocfs2_calc_qdel_credits(sb, USRQUOTA);
+ locked[USRQUOTA] = 1;
+ }
+ if (attr->ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid
+ && OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
+ oinfo = sb_dqinfo(sb, GRPQUOTA)->dqi_priv;
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto bail_unlock;
+ credits += ocfs2_calc_qinit_credits(sb, GRPQUOTA) +
+ ocfs2_calc_qdel_credits(sb, GRPQUOTA);
+ locked[GRPQUOTA] = 1;
+ }
+ handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto bail_unlock;
+ }
+ status = vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
+ if (status < 0)
+ goto bail_commit;
+ } else {
+ handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto bail_unlock;
+ }
}
/*
@@ -982,6 +1030,12 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
bail_commit:
ocfs2_commit_trans(osb, handle);
bail_unlock:
+ for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
+ if (!locked[qtype])
+ continue;
+ oinfo = sb_dqinfo(sb, qtype)->dqi_priv;
+ ocfs2_unlock_global_qf(oinfo, 1);
+ }
ocfs2_inode_unlock(inode, 1);
bail_unlock_rw:
if (size_change)
@@ -989,6 +1043,12 @@ bail_unlock_rw:
bail:
brelse(bh);
+ if (!status && attr->ia_valid & ATTR_MODE) {
+ status = ocfs2_acl_chmod(inode);
+ if (status < 0)
+ mlog_errno(status);
+ }
+
mlog_exit(status);
return status;
}
@@ -1035,7 +1095,7 @@ int ocfs2_permission(struct inode *inode, int mask)
goto out;
}
- ret = generic_permission(inode, mask, NULL);
+ ret = generic_permission(inode, mask, ocfs2_check_acl);
ocfs2_inode_unlock(inode, 0);
out:
@@ -1061,8 +1121,8 @@ static int __ocfs2_write_remove_suid(struct inode *inode,
goto out;
}
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_trans;
@@ -1128,9 +1188,8 @@ static int ocfs2_write_remove_suid(struct inode *inode)
{
int ret;
struct buffer_head *bh = NULL;
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
- ret = ocfs2_read_block(inode, oi->ip_blkno, &bh);
+ ret = ocfs2_read_inode_block(inode, &bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -1156,8 +1215,7 @@ static int ocfs2_allocate_unwritten_extents(struct inode *inode,
struct buffer_head *di_bh = NULL;
if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
- ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno,
- &di_bh);
+ ret = ocfs2_read_inode_block(inode, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -1226,83 +1284,6 @@ out:
return ret;
}
-static int __ocfs2_remove_inode_range(struct inode *inode,
- struct buffer_head *di_bh,
- u32 cpos, u32 phys_cpos, u32 len,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
-{
- int ret;
- u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct inode *tl_inode = osb->osb_tl_inode;
- handle_t *handle;
- struct ocfs2_alloc_context *meta_ac = NULL;
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
- struct ocfs2_extent_tree et;
-
- ocfs2_init_dinode_extent_tree(&et, inode, di_bh);
-
- ret = ocfs2_lock_allocators(inode, &et, 0, 1, NULL, &meta_ac);
- if (ret) {
- mlog_errno(ret);
- return ret;
- }
-
- mutex_lock(&tl_inode->i_mutex);
-
- if (ocfs2_truncate_log_needs_flush(osb)) {
- ret = __ocfs2_flush_truncate_log(osb);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
- }
-
- handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_remove_extent(inode, &et, cpos, len, handle, meta_ac,
- dealloc);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- OCFS2_I(inode)->ip_clusters -= len;
- di->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
-
- ret = ocfs2_journal_dirty(handle, di_bh);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- ret = ocfs2_truncate_log_append(osb, handle, phys_blkno, len);
- if (ret)
- mlog_errno(ret);
-
-out_commit:
- ocfs2_commit_trans(osb, handle);
-out:
- mutex_unlock(&tl_inode->i_mutex);
-
- if (meta_ac)
- ocfs2_free_alloc_context(meta_ac);
-
- return ret;
-}
-
/*
* Truncate a byte range, avoiding pages within partial clusters. This
* preserves those pages for the zeroing code to write to.
@@ -1402,7 +1383,9 @@ static int ocfs2_remove_inode_range(struct inode *inode,
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_cached_dealloc_ctxt dealloc;
struct address_space *mapping = inode->i_mapping;
+ struct ocfs2_extent_tree et;
+ ocfs2_init_dinode_extent_tree(&et, inode, di_bh);
ocfs2_init_dealloc_ctxt(&dealloc);
if (byte_len == 0)
@@ -1458,9 +1441,9 @@ static int ocfs2_remove_inode_range(struct inode *inode,
/* Only do work for non-holes */
if (phys_cpos != 0) {
- ret = __ocfs2_remove_inode_range(inode, di_bh, cpos,
- phys_cpos, alloc_size,
- &dealloc);
+ ret = ocfs2_remove_btree_range(inode, &et, cpos,
+ phys_cpos, alloc_size,
+ &dealloc);
if (ret) {
mlog_errno(ret);
goto out;
@@ -1622,7 +1605,7 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd,
struct ocfs2_space_resv *sr)
{
struct inode *inode = file->f_path.dentry->d_inode;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
if ((cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) &&
!ocfs2_writes_unwritten_extents(osb))
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index e92382cbca5..172f9fbc9fc 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -51,6 +51,9 @@ int ocfs2_add_inode_data(struct ocfs2_super *osb,
struct ocfs2_alloc_context *data_ac,
struct ocfs2_alloc_context *meta_ac,
enum ocfs2_alloc_restarted *reason_ret);
+int ocfs2_simple_size_update(struct inode *inode,
+ struct buffer_head *di_bh,
+ u64 new_i_size);
int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size,
u64 zero_to);
int ocfs2_setattr(struct dentry *dentry, struct iattr *attr);
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 7aa00d51187..229e707bc05 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -28,6 +28,7 @@
#include <linux/slab.h>
#include <linux/highmem.h>
#include <linux/pagemap.h>
+#include <linux/quotaops.h>
#include <asm/byteorder.h>
@@ -37,6 +38,7 @@
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "extent_map.h"
#include "file.h"
@@ -214,12 +216,11 @@ static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
return 0;
}
-int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
- int create_ino)
+void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
+ int create_ino)
{
struct super_block *sb;
struct ocfs2_super *osb;
- int status = -EINVAL;
int use_plocks = 1;
mlog_entry("(0x%p, size:%llu)\n", inode,
@@ -232,25 +233,17 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks())
use_plocks = 0;
- /* this means that read_inode cannot create a superblock inode
- * today. change if needed. */
- if (!OCFS2_IS_VALID_DINODE(fe) ||
- !(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
- mlog(0, "Invalid dinode: i_ino=%lu, i_blkno=%llu, "
- "signature = %.*s, flags = 0x%x\n",
- inode->i_ino,
- (unsigned long long)le64_to_cpu(fe->i_blkno), 7,
- fe->i_signature, le32_to_cpu(fe->i_flags));
- goto bail;
- }
+ /*
+ * These have all been checked by ocfs2_read_inode_block() or set
+ * by ocfs2_mknod_locked(), so a failure is a code bug.
+ */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode
+ cannot create a superblock
+ inode today. change if
+ that is needed. */
+ BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL)));
+ BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation);
- if (le32_to_cpu(fe->i_fs_generation) != osb->fs_generation) {
- mlog(ML_ERROR, "file entry generation does not match "
- "superblock! osb->fs_generation=%x, "
- "fe->i_fs_generation=%x\n",
- osb->fs_generation, le32_to_cpu(fe->i_fs_generation));
- goto bail;
- }
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
@@ -284,14 +277,18 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
inode->i_nlink = le16_to_cpu(fe->i_links_count);
- if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL))
+ if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) {
OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
+ inode->i_flags |= S_NOQUOTA;
+ }
if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino);
} else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
+ } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) {
+ inode->i_flags |= S_NOQUOTA;
} else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino);
/* we can't actually hit this as read_inode can't
@@ -354,10 +351,7 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
ocfs2_set_inode_flags(inode);
- status = 0;
-bail:
- mlog_exit(status);
- return status;
+ mlog_exit_void();
}
static int ocfs2_read_locked_inode(struct inode *inode,
@@ -460,11 +454,14 @@ static int ocfs2_read_locked_inode(struct inode *inode,
}
}
- if (can_lock)
- status = ocfs2_read_blocks(inode, args->fi_blkno, 1, &bh,
- OCFS2_BH_IGNORE_CACHE);
- else
+ if (can_lock) {
+ status = ocfs2_read_inode_block_full(inode, &bh,
+ OCFS2_BH_IGNORE_CACHE);
+ } else {
status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
+ if (!status)
+ status = ocfs2_validate_inode_block(osb->sb, bh);
+ }
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -472,12 +469,6 @@ static int ocfs2_read_locked_inode(struct inode *inode,
status = -EINVAL;
fe = (struct ocfs2_dinode *) bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- mlog(0, "Invalid dinode #%llu: signature = %.*s\n",
- (unsigned long long)args->fi_blkno, 7,
- fe->i_signature);
- goto bail;
- }
/*
* This is a code bug. Right now the caller needs to
@@ -491,10 +482,9 @@ static int ocfs2_read_locked_inode(struct inode *inode,
if (S_ISCHR(le16_to_cpu(fe->i_mode)) ||
S_ISBLK(le16_to_cpu(fe->i_mode)))
- inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
+ inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
- if (ocfs2_populate_inode(inode, fe, 0) < 0)
- goto bail;
+ ocfs2_populate_inode(inode, fe, 0);
BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno));
@@ -547,8 +537,8 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
goto out;
}
- status = ocfs2_journal_access(handle, inode, fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, inode, fe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto out;
@@ -615,7 +605,8 @@ static int ocfs2_remove_inode(struct inode *inode,
goto bail;
}
- handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS);
+ handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS +
+ ocfs2_quota_trans_credits(inode->i_sb));
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
@@ -630,8 +621,8 @@ static int ocfs2_remove_inode(struct inode *inode,
}
/* set the inodes dtime */
- status = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail_commit;
@@ -647,6 +638,7 @@ static int ocfs2_remove_inode(struct inode *inode,
}
ocfs2_remove_from_cache(inode, di_bh);
+ vfs_dq_free_inode(inode);
status = ocfs2_free_dinode(handle, inode_alloc_inode,
inode_alloc_bh, di);
@@ -929,7 +921,10 @@ void ocfs2_delete_inode(struct inode *inode)
mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
- if (is_bad_inode(inode)) {
+ /* When we fail in read_inode() we mark inode as bad. The second test
+ * catches the case when inode allocation fails before allocating
+ * a block for inode. */
+ if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) {
mlog(0, "Skipping delete of bad inode\n");
goto bail;
}
@@ -1195,8 +1190,8 @@ int ocfs2_mark_inode_dirty(handle_t *handle,
mlog_entry("(inode %llu)\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
- status = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -1264,3 +1259,89 @@ void ocfs2_refresh_inode(struct inode *inode,
spin_unlock(&OCFS2_I(inode)->ip_lock);
}
+
+int ocfs2_validate_inode_block(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
+
+ mlog(0, "Validating dinode %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check);
+ if (rc) {
+ mlog(ML_ERROR, "Checksum failed for dinode %llu\n",
+ (unsigned long long)bh->b_blocknr);
+ goto bail;
+ }
+
+ /*
+ * Errors after here are fatal.
+ */
+
+ rc = -EINVAL;
+
+ if (!OCFS2_IS_VALID_DINODE(di)) {
+ ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n",
+ (unsigned long long)bh->b_blocknr, 7,
+ di->i_signature);
+ goto bail;
+ }
+
+ if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) {
+ ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n",
+ (unsigned long long)bh->b_blocknr,
+ (unsigned long long)le64_to_cpu(di->i_blkno));
+ goto bail;
+ }
+
+ if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
+ ocfs2_error(sb,
+ "Invalid dinode #%llu: OCFS2_VALID_FL not set\n",
+ (unsigned long long)bh->b_blocknr);
+ goto bail;
+ }
+
+ if (le32_to_cpu(di->i_fs_generation) !=
+ OCFS2_SB(sb)->fs_generation) {
+ ocfs2_error(sb,
+ "Invalid dinode #%llu: fs_generation is %u\n",
+ (unsigned long long)bh->b_blocknr,
+ le32_to_cpu(di->i_fs_generation));
+ goto bail;
+ }
+
+ rc = 0;
+
+bail:
+ return rc;
+}
+
+int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
+ int flags)
+{
+ int rc;
+ struct buffer_head *tmp = *bh;
+
+ rc = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1, &tmp,
+ flags, ocfs2_validate_inode_block);
+
+ /* If ocfs2_read_blocks() got us a new bh, pass it up. */
+ if (!rc && !*bh)
+ *bh = tmp;
+
+ return rc;
+}
+
+int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh)
+{
+ return ocfs2_read_inode_block_full(inode, bh, 0);
+}
diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index 2f37af9bcc4..eb3c302b38d 100644
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -128,8 +128,8 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags,
int sysfile_type);
int ocfs2_inode_init_private(struct inode *inode);
int ocfs2_inode_revalidate(struct dentry *dentry);
-int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
- int create_ino);
+void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
+ int create_ino);
void ocfs2_read_inode(struct inode *inode);
void ocfs2_read_inode2(struct inode *inode, void *opaque);
ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf,
@@ -142,6 +142,8 @@ int ocfs2_mark_inode_dirty(handle_t *handle,
struct buffer_head *bh);
int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb);
int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
+struct buffer_head *ocfs2_bread(struct inode *inode,
+ int block, int *err, int reada);
void ocfs2_set_inode_flags(struct inode *inode);
void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
@@ -153,4 +155,16 @@ static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
return (blkcnt_t)(OCFS2_I(inode)->ip_clusters << c_to_s_bits);
}
+/* Validate that a bh contains a valid inode */
+int ocfs2_validate_inode_block(struct super_block *sb,
+ struct buffer_head *bh);
+/*
+ * Read an inode block into *bh. If *bh is NULL, a bh will be allocated.
+ * This is a cached read. The inode will be validated with
+ * ocfs2_validate_inode_block().
+ */
+int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh);
+/* The same, but can be passed OCFS2_BH_* flags */
+int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
+ int flags);
#endif /* OCFS2_INODE_H */
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 99fe9d584f3..57d7d25a2b9 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -35,6 +35,7 @@
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dir.h"
#include "dlmglue.h"
#include "extent_map.h"
@@ -45,6 +46,7 @@
#include "slot_map.h"
#include "super.h"
#include "sysfile.h"
+#include "quota.h"
#include "buffer_head_io.h"
@@ -52,10 +54,10 @@ DEFINE_SPINLOCK(trans_inc_lock);
static int ocfs2_force_read_journal(struct inode *inode);
static int ocfs2_recover_node(struct ocfs2_super *osb,
- int node_num);
+ int node_num, int slot_num);
static int __ocfs2_recovery_thread(void *arg);
static int ocfs2_commit_cache(struct ocfs2_super *osb);
-static int ocfs2_wait_on_mount(struct ocfs2_super *osb);
+static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota);
static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
int dirty, int replayed);
static int ocfs2_trylock_journal(struct ocfs2_super *osb,
@@ -64,6 +66,17 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
int slot);
static int ocfs2_commit_thread(void *arg);
+static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb)
+{
+ return __ocfs2_wait_on_mount(osb, 0);
+}
+
+static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb)
+{
+ return __ocfs2_wait_on_mount(osb, 1);
+}
+
+
/*
* The recovery_list is a simple linked list of node numbers to recover.
@@ -256,11 +269,9 @@ handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
BUG_ON(max_buffs <= 0);
- /* JBD might support this, but our journalling code doesn't yet. */
- if (journal_current_handle()) {
- mlog(ML_ERROR, "Recursive transaction attempted!\n");
- BUG();
- }
+ /* Nested transaction? Just return the handle... */
+ if (journal_current_handle())
+ return jbd2_journal_start(journal, max_buffs);
down_read(&osb->journal->j_trans_barrier);
@@ -285,16 +296,18 @@ handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
int ocfs2_commit_trans(struct ocfs2_super *osb,
handle_t *handle)
{
- int ret;
+ int ret, nested;
struct ocfs2_journal *journal = osb->journal;
BUG_ON(!handle);
+ nested = handle->h_ref > 1;
ret = jbd2_journal_stop(handle);
if (ret < 0)
mlog_errno(ret);
- up_read(&journal->j_trans_barrier);
+ if (!nested)
+ up_read(&journal->j_trans_barrier);
return ret;
}
@@ -357,10 +370,137 @@ bail:
return status;
}
-int ocfs2_journal_access(handle_t *handle,
- struct inode *inode,
- struct buffer_head *bh,
- int type)
+struct ocfs2_triggers {
+ struct jbd2_buffer_trigger_type ot_triggers;
+ int ot_offset;
+};
+
+static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers)
+{
+ return container_of(triggers, struct ocfs2_triggers, ot_triggers);
+}
+
+static void ocfs2_commit_trigger(struct jbd2_buffer_trigger_type *triggers,
+ struct buffer_head *bh,
+ void *data, size_t size)
+{
+ struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers);
+
+ /*
+ * We aren't guaranteed to have the superblock here, so we
+ * must unconditionally compute the ecc data.
+ * __ocfs2_journal_access() will only set the triggers if
+ * metaecc is enabled.
+ */
+ ocfs2_block_check_compute(data, size, data + ot->ot_offset);
+}
+
+/*
+ * Quota blocks have their own trigger because the struct ocfs2_block_check
+ * offset depends on the blocksize.
+ */
+static void ocfs2_dq_commit_trigger(struct jbd2_buffer_trigger_type *triggers,
+ struct buffer_head *bh,
+ void *data, size_t size)
+{
+ struct ocfs2_disk_dqtrailer *dqt =
+ ocfs2_block_dqtrailer(size, data);
+
+ /*
+ * We aren't guaranteed to have the superblock here, so we
+ * must unconditionally compute the ecc data.
+ * __ocfs2_journal_access() will only set the triggers if
+ * metaecc is enabled.
+ */
+ ocfs2_block_check_compute(data, size, &dqt->dq_check);
+}
+
+/*
+ * Directory blocks also have their own trigger because the
+ * struct ocfs2_block_check offset depends on the blocksize.
+ */
+static void ocfs2_db_commit_trigger(struct jbd2_buffer_trigger_type *triggers,
+ struct buffer_head *bh,
+ void *data, size_t size)
+{
+ struct ocfs2_dir_block_trailer *trailer =
+ ocfs2_dir_trailer_from_size(size, data);
+
+ /*
+ * We aren't guaranteed to have the superblock here, so we
+ * must unconditionally compute the ecc data.
+ * __ocfs2_journal_access() will only set the triggers if
+ * metaecc is enabled.
+ */
+ ocfs2_block_check_compute(data, size, &trailer->db_check);
+}
+
+static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers,
+ struct buffer_head *bh)
+{
+ mlog(ML_ERROR,
+ "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, "
+ "bh->b_blocknr = %llu\n",
+ (unsigned long)bh,
+ (unsigned long long)bh->b_blocknr);
+
+ /* We aren't guaranteed to have the superblock here - but if we
+ * don't, it'll just crash. */
+ ocfs2_error(bh->b_assoc_map->host->i_sb,
+ "JBD2 has aborted our journal, ocfs2 cannot continue\n");
+}
+
+static struct ocfs2_triggers di_triggers = {
+ .ot_triggers = {
+ .t_commit = ocfs2_commit_trigger,
+ .t_abort = ocfs2_abort_trigger,
+ },
+ .ot_offset = offsetof(struct ocfs2_dinode, i_check),
+};
+
+static struct ocfs2_triggers eb_triggers = {
+ .ot_triggers = {
+ .t_commit = ocfs2_commit_trigger,
+ .t_abort = ocfs2_abort_trigger,
+ },
+ .ot_offset = offsetof(struct ocfs2_extent_block, h_check),
+};
+
+static struct ocfs2_triggers gd_triggers = {
+ .ot_triggers = {
+ .t_commit = ocfs2_commit_trigger,
+ .t_abort = ocfs2_abort_trigger,
+ },
+ .ot_offset = offsetof(struct ocfs2_group_desc, bg_check),
+};
+
+static struct ocfs2_triggers db_triggers = {
+ .ot_triggers = {
+ .t_commit = ocfs2_db_commit_trigger,
+ .t_abort = ocfs2_abort_trigger,
+ },
+};
+
+static struct ocfs2_triggers xb_triggers = {
+ .ot_triggers = {
+ .t_commit = ocfs2_commit_trigger,
+ .t_abort = ocfs2_abort_trigger,
+ },
+ .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check),
+};
+
+static struct ocfs2_triggers dq_triggers = {
+ .ot_triggers = {
+ .t_commit = ocfs2_dq_commit_trigger,
+ .t_abort = ocfs2_abort_trigger,
+ },
+};
+
+static int __ocfs2_journal_access(handle_t *handle,
+ struct inode *inode,
+ struct buffer_head *bh,
+ struct ocfs2_triggers *triggers,
+ int type)
{
int status;
@@ -406,6 +546,8 @@ int ocfs2_journal_access(handle_t *handle,
status = -EINVAL;
mlog(ML_ERROR, "Uknown access type!\n");
}
+ if (!status && ocfs2_meta_ecc(OCFS2_SB(inode->i_sb)) && triggers)
+ jbd2_journal_set_triggers(bh, &triggers->ot_triggers);
mutex_unlock(&OCFS2_I(inode)->ip_io_mutex);
if (status < 0)
@@ -416,6 +558,54 @@ int ocfs2_journal_access(handle_t *handle,
return status;
}
+int ocfs2_journal_access_di(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type)
+{
+ return __ocfs2_journal_access(handle, inode, bh, &di_triggers,
+ type);
+}
+
+int ocfs2_journal_access_eb(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type)
+{
+ return __ocfs2_journal_access(handle, inode, bh, &eb_triggers,
+ type);
+}
+
+int ocfs2_journal_access_gd(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type)
+{
+ return __ocfs2_journal_access(handle, inode, bh, &gd_triggers,
+ type);
+}
+
+int ocfs2_journal_access_db(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type)
+{
+ return __ocfs2_journal_access(handle, inode, bh, &db_triggers,
+ type);
+}
+
+int ocfs2_journal_access_xb(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type)
+{
+ return __ocfs2_journal_access(handle, inode, bh, &xb_triggers,
+ type);
+}
+
+int ocfs2_journal_access_dq(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type)
+{
+ return __ocfs2_journal_access(handle, inode, bh, &dq_triggers,
+ type);
+}
+
+int ocfs2_journal_access(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type)
+{
+ return __ocfs2_journal_access(handle, inode, bh, NULL, type);
+}
+
int ocfs2_journal_dirty(handle_t *handle,
struct buffer_head *bh)
{
@@ -434,20 +624,6 @@ int ocfs2_journal_dirty(handle_t *handle,
return status;
}
-#ifdef CONFIG_OCFS2_COMPAT_JBD
-int ocfs2_journal_dirty_data(handle_t *handle,
- struct buffer_head *bh)
-{
- int err = journal_dirty_data(handle, bh);
- if (err)
- mlog_errno(err);
- /* TODO: When we can handle it, abort the handle and go RO on
- * error here. */
-
- return err;
-}
-#endif
-
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE)
void ocfs2_set_journal_params(struct ocfs2_super *osb)
@@ -587,17 +763,11 @@ static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
mlog_entry_void();
fe = (struct ocfs2_dinode *)bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- /* This is called from startup/shutdown which will
- * handle the errors in a specific manner, so no need
- * to call ocfs2_error() here. */
- mlog(ML_ERROR, "Journal dinode %llu has invalid "
- "signature: %.*s",
- (unsigned long long)le64_to_cpu(fe->i_blkno), 7,
- fe->i_signature);
- status = -EIO;
- goto out;
- }
+
+ /* The journal bh on the osb always comes from ocfs2_journal_init()
+ * and was validated there inside ocfs2_inode_lock_full(). It's a
+ * code bug if we mess it up. */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
flags = le32_to_cpu(fe->id1.journal1.ij_flags);
if (dirty)
@@ -609,11 +779,11 @@ static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
if (replayed)
ocfs2_bump_recovery_generation(fe);
+ ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
status = ocfs2_write_block(osb, bh, journal->j_inode);
if (status < 0)
mlog_errno(status);
-out:
mlog_exit(status);
return status;
}
@@ -878,6 +1048,7 @@ struct ocfs2_la_recovery_item {
int lri_slot;
struct ocfs2_dinode *lri_la_dinode;
struct ocfs2_dinode *lri_tl_dinode;
+ struct ocfs2_quota_recovery *lri_qrec;
};
/* Does the second half of the recovery process. By this point, the
@@ -898,6 +1069,7 @@ void ocfs2_complete_recovery(struct work_struct *work)
struct ocfs2_super *osb = journal->j_osb;
struct ocfs2_dinode *la_dinode, *tl_dinode;
struct ocfs2_la_recovery_item *item, *n;
+ struct ocfs2_quota_recovery *qrec;
LIST_HEAD(tmp_la_list);
mlog_entry_void();
@@ -913,6 +1085,8 @@ void ocfs2_complete_recovery(struct work_struct *work)
mlog(0, "Complete recovery for slot %d\n", item->lri_slot);
+ ocfs2_wait_on_quotas(osb);
+
la_dinode = item->lri_la_dinode;
if (la_dinode) {
mlog(0, "Clean up local alloc %llu\n",
@@ -943,6 +1117,16 @@ void ocfs2_complete_recovery(struct work_struct *work)
if (ret < 0)
mlog_errno(ret);
+ qrec = item->lri_qrec;
+ if (qrec) {
+ mlog(0, "Recovering quota files");
+ ret = ocfs2_finish_quota_recovery(osb, qrec,
+ item->lri_slot);
+ if (ret < 0)
+ mlog_errno(ret);
+ /* Recovery info is already freed now */
+ }
+
kfree(item);
}
@@ -956,7 +1140,8 @@ void ocfs2_complete_recovery(struct work_struct *work)
static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
int slot_num,
struct ocfs2_dinode *la_dinode,
- struct ocfs2_dinode *tl_dinode)
+ struct ocfs2_dinode *tl_dinode,
+ struct ocfs2_quota_recovery *qrec)
{
struct ocfs2_la_recovery_item *item;
@@ -971,6 +1156,9 @@ static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
if (tl_dinode)
kfree(tl_dinode);
+ if (qrec)
+ ocfs2_free_quota_recovery(qrec);
+
mlog_errno(-ENOMEM);
return;
}
@@ -979,6 +1167,7 @@ static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
item->lri_la_dinode = la_dinode;
item->lri_slot = slot_num;
item->lri_tl_dinode = tl_dinode;
+ item->lri_qrec = qrec;
spin_lock(&journal->j_lock);
list_add_tail(&item->lri_list, &journal->j_la_cleanups);
@@ -998,6 +1187,7 @@ void ocfs2_complete_mount_recovery(struct ocfs2_super *osb)
ocfs2_queue_recovery_completion(journal,
osb->slot_num,
osb->local_alloc_copy,
+ NULL,
NULL);
ocfs2_schedule_truncate_log_flush(osb, 0);
@@ -1006,11 +1196,26 @@ void ocfs2_complete_mount_recovery(struct ocfs2_super *osb)
}
}
+void ocfs2_complete_quota_recovery(struct ocfs2_super *osb)
+{
+ if (osb->quota_rec) {
+ ocfs2_queue_recovery_completion(osb->journal,
+ osb->slot_num,
+ NULL,
+ NULL,
+ osb->quota_rec);
+ osb->quota_rec = NULL;
+ }
+}
+
static int __ocfs2_recovery_thread(void *arg)
{
- int status, node_num;
+ int status, node_num, slot_num;
struct ocfs2_super *osb = arg;
struct ocfs2_recovery_map *rm = osb->recovery_map;
+ int *rm_quota = NULL;
+ int rm_quota_used = 0, i;
+ struct ocfs2_quota_recovery *qrec;
mlog_entry_void();
@@ -1019,6 +1224,11 @@ static int __ocfs2_recovery_thread(void *arg)
goto bail;
}
+ rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS);
+ if (!rm_quota) {
+ status = -ENOMEM;
+ goto bail;
+ }
restart:
status = ocfs2_super_lock(osb, 1);
if (status < 0) {
@@ -1032,8 +1242,28 @@ restart:
* clear it until ocfs2_recover_node() has succeeded. */
node_num = rm->rm_entries[0];
spin_unlock(&osb->osb_lock);
-
- status = ocfs2_recover_node(osb, node_num);
+ mlog(0, "checking node %d\n", node_num);
+ slot_num = ocfs2_node_num_to_slot(osb, node_num);
+ if (slot_num == -ENOENT) {
+ status = 0;
+ mlog(0, "no slot for this node, so no recovery"
+ "required.\n");
+ goto skip_recovery;
+ }
+ mlog(0, "node %d was using slot %d\n", node_num, slot_num);
+
+ /* It is a bit subtle with quota recovery. We cannot do it
+ * immediately because we have to obtain cluster locks from
+ * quota files and we also don't want to just skip it because
+ * then quota usage would be out of sync until some node takes
+ * the slot. So we remember which nodes need quota recovery
+ * and when everything else is done, we recover quotas. */
+ for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++);
+ if (i == rm_quota_used)
+ rm_quota[rm_quota_used++] = slot_num;
+
+ status = ocfs2_recover_node(osb, node_num, slot_num);
+skip_recovery:
if (!status) {
ocfs2_recovery_map_clear(osb, node_num);
} else {
@@ -1055,13 +1285,27 @@ restart:
if (status < 0)
mlog_errno(status);
+ /* Now it is right time to recover quotas... We have to do this under
+ * superblock lock so that noone can start using the slot (and crash)
+ * before we recover it */
+ for (i = 0; i < rm_quota_used; i++) {
+ qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]);
+ if (IS_ERR(qrec)) {
+ status = PTR_ERR(qrec);
+ mlog_errno(status);
+ continue;
+ }
+ ocfs2_queue_recovery_completion(osb->journal, rm_quota[i],
+ NULL, NULL, qrec);
+ }
+
ocfs2_super_unlock(osb, 1);
/* We always run recovery on our own orphan dir - the dead
* node(s) may have disallowd a previos inode delete. Re-processing
* is therefore required. */
ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL,
- NULL);
+ NULL, NULL);
bail:
mutex_lock(&osb->recovery_lock);
@@ -1076,6 +1320,9 @@ bail:
mutex_unlock(&osb->recovery_lock);
+ if (rm_quota)
+ kfree(rm_quota);
+
mlog_exit(status);
/* no one is callint kthread_stop() for us so the kthread() api
* requires that we call do_exit(). And it isn't exported, but
@@ -1135,8 +1382,7 @@ static int ocfs2_read_journal_inode(struct ocfs2_super *osb,
}
SET_INODE_JOURNAL(inode);
- status = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1, bh,
- OCFS2_BH_IGNORE_CACHE);
+ status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1268,6 +1514,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
osb->slot_recovery_generations[slot_num] =
ocfs2_get_recovery_generation(fe);
+ ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
status = ocfs2_write_block(osb, bh, inode);
if (status < 0)
mlog_errno(status);
@@ -1304,31 +1551,19 @@ done:
* far less concerning.
*/
static int ocfs2_recover_node(struct ocfs2_super *osb,
- int node_num)
+ int node_num, int slot_num)
{
int status = 0;
- int slot_num;
struct ocfs2_dinode *la_copy = NULL;
struct ocfs2_dinode *tl_copy = NULL;
- mlog_entry("(node_num=%d, osb->node_num = %d)\n",
- node_num, osb->node_num);
-
- mlog(0, "checking node %d\n", node_num);
+ mlog_entry("(node_num=%d, slot_num=%d, osb->node_num = %d)\n",
+ node_num, slot_num, osb->node_num);
/* Should not ever be called to recover ourselves -- in that
* case we should've called ocfs2_journal_load instead. */
BUG_ON(osb->node_num == node_num);
- slot_num = ocfs2_node_num_to_slot(osb, node_num);
- if (slot_num == -ENOENT) {
- status = 0;
- mlog(0, "no slot for this node, so no recovery required.\n");
- goto done;
- }
-
- mlog(0, "node %d was using slot %d\n", node_num, slot_num);
-
status = ocfs2_replay_journal(osb, node_num, slot_num);
if (status < 0) {
if (status == -EBUSY) {
@@ -1364,7 +1599,7 @@ static int ocfs2_recover_node(struct ocfs2_super *osb,
/* This will kfree the memory pointed to by la_copy and tl_copy */
ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy,
- tl_copy);
+ tl_copy, NULL);
status = 0;
done:
@@ -1659,13 +1894,14 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
return ret;
}
-static int ocfs2_wait_on_mount(struct ocfs2_super *osb)
+static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota)
{
/* This check is good because ocfs2 will wait on our recovery
* thread before changing it to something other than MOUNTED
* or DISABLED. */
wait_event(osb->osb_mount_event,
- atomic_read(&osb->vol_state) == VOLUME_MOUNTED ||
+ (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) ||
+ atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS ||
atomic_read(&osb->vol_state) == VOLUME_DISABLED);
/* If there's an error on mount, then we may never get to the
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index d4d14e9a3ce..3c3532e1307 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -27,12 +27,7 @@
#define OCFS2_JOURNAL_H
#include <linux/fs.h>
-#ifndef CONFIG_OCFS2_COMPAT_JBD
-# include <linux/jbd2.h>
-#else
-# include <linux/jbd.h>
-# include "ocfs2_jbd_compat.h"
-#endif
+#include <linux/jbd2.h>
enum ocfs2_journal_state {
OCFS2_JOURNAL_FREE = 0,
@@ -173,6 +168,7 @@ void ocfs2_recovery_thread(struct ocfs2_super *osb,
int node_num);
int ocfs2_mark_dead_nodes(struct ocfs2_super *osb);
void ocfs2_complete_mount_recovery(struct ocfs2_super *osb);
+void ocfs2_complete_quota_recovery(struct ocfs2_super *osb);
static inline void ocfs2_start_checkpoint(struct ocfs2_super *osb)
{
@@ -216,9 +212,12 @@ static inline void ocfs2_checkpoint_inode(struct inode *inode)
* ocfs2_extend_trans - Extend a handle by nblocks credits. This may
* commit the handle to disk in the process, but will
* not release any locks taken during the transaction.
- * ocfs2_journal_access - Notify the handle that we want to journal this
+ * ocfs2_journal_access* - Notify the handle that we want to journal this
* buffer. Will have to call ocfs2_journal_dirty once
* we've actually dirtied it. Type is one of . or .
+ * Always call the specific flavor of
+ * ocfs2_journal_access_*() unless you intend to
+ * manage the checksum by hand.
* ocfs2_journal_dirty - Mark a journalled buffer as having dirty data.
* ocfs2_jbd2_file_inode - Mark an inode so that its data goes out before
* the current handle commits.
@@ -248,10 +247,29 @@ int ocfs2_extend_trans(handle_t *handle, int nblocks);
#define OCFS2_JOURNAL_ACCESS_WRITE 1
#define OCFS2_JOURNAL_ACCESS_UNDO 2
-int ocfs2_journal_access(handle_t *handle,
- struct inode *inode,
- struct buffer_head *bh,
- int type);
+
+/* ocfs2_inode */
+int ocfs2_journal_access_di(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+/* ocfs2_extent_block */
+int ocfs2_journal_access_eb(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+/* ocfs2_group_desc */
+int ocfs2_journal_access_gd(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+/* ocfs2_xattr_block */
+int ocfs2_journal_access_xb(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+/* quota blocks */
+int ocfs2_journal_access_dq(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+/* dirblock */
+int ocfs2_journal_access_db(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+/* Anything that has no ecc */
+int ocfs2_journal_access(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+
/*
* A word about the journal_access/journal_dirty "dance". It is
* entirely legal to journal_access a buffer more than once (as long
@@ -273,10 +291,6 @@ int ocfs2_journal_access(handle_t *handle,
*/
int ocfs2_journal_dirty(handle_t *handle,
struct buffer_head *bh);
-#ifdef CONFIG_OCFS2_COMPAT_JBD
-int ocfs2_journal_dirty_data(handle_t *handle,
- struct buffer_head *bh);
-#endif
/*
* Credit Macros:
@@ -293,6 +307,37 @@ int ocfs2_journal_dirty_data(handle_t *handle,
/* extended attribute block update */
#define OCFS2_XATTR_BLOCK_UPDATE_CREDITS 1
+/* global quotafile inode update, data block */
+#define OCFS2_QINFO_WRITE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1)
+
+/*
+ * The two writes below can accidentally see global info dirty due
+ * to set_info() quotactl so make them prepared for the writes.
+ */
+/* quota data block, global info */
+/* Write to local quota file */
+#define OCFS2_QWRITE_CREDITS (OCFS2_QINFO_WRITE_CREDITS + 1)
+
+/* global quota data block, local quota data block, global quota inode,
+ * global quota info */
+#define OCFS2_QSYNC_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 3)
+
+static inline int ocfs2_quota_trans_credits(struct super_block *sb)
+{
+ int credits = 0;
+
+ if (OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA))
+ credits += OCFS2_QWRITE_CREDITS;
+ if (OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA))
+ credits += OCFS2_QWRITE_CREDITS;
+ return credits;
+}
+
+/* Number of credits needed for removing quota structure from file */
+int ocfs2_calc_qdel_credits(struct super_block *sb, int type);
+/* Number of credits needed for initialization of new quota structure */
+int ocfs2_calc_qinit_credits(struct super_block *sb, int type);
+
/* group extend. inode update and last group update. */
#define OCFS2_GROUP_EXTEND_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1)
@@ -303,8 +348,11 @@ int ocfs2_journal_dirty_data(handle_t *handle,
* prev. group desc. if we relink. */
#define OCFS2_SUBALLOC_ALLOC (3)
-#define OCFS2_INLINE_TO_EXTENTS_CREDITS (OCFS2_SUBALLOC_ALLOC \
- + OCFS2_INODE_UPDATE_CREDITS)
+static inline int ocfs2_inline_to_extents_credits(struct super_block *sb)
+{
+ return OCFS2_SUBALLOC_ALLOC + OCFS2_INODE_UPDATE_CREDITS +
+ ocfs2_quota_trans_credits(sb);
+}
/* dinode + group descriptor update. We don't relink on free yet. */
#define OCFS2_SUBALLOC_FREE (2)
@@ -313,16 +361,23 @@ int ocfs2_journal_dirty_data(handle_t *handle,
#define OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC (OCFS2_SUBALLOC_FREE \
+ OCFS2_TRUNCATE_LOG_UPDATE)
-#define OCFS2_REMOVE_EXTENT_CREDITS (OCFS2_TRUNCATE_LOG_UPDATE + OCFS2_INODE_UPDATE_CREDITS)
+static inline int ocfs2_remove_extent_credits(struct super_block *sb)
+{
+ return OCFS2_TRUNCATE_LOG_UPDATE + OCFS2_INODE_UPDATE_CREDITS +
+ ocfs2_quota_trans_credits(sb);
+}
/* data block for new dir/symlink, 2 for bitmap updates (bitmap fe +
* bitmap block for the new bit) */
#define OCFS2_DIR_LINK_ADDITIONAL_CREDITS (1 + 2)
/* parent fe, parent block, new file entry, inode alloc fe, inode alloc
- * group descriptor + mkdir/symlink blocks */
-#define OCFS2_MKNOD_CREDITS (3 + OCFS2_SUBALLOC_ALLOC \
- + OCFS2_DIR_LINK_ADDITIONAL_CREDITS)
+ * group descriptor + mkdir/symlink blocks + quota update */
+static inline int ocfs2_mknod_credits(struct super_block *sb)
+{
+ return 3 + OCFS2_SUBALLOC_ALLOC + OCFS2_DIR_LINK_ADDITIONAL_CREDITS +
+ ocfs2_quota_trans_credits(sb);
+}
/* local alloc metadata change + main bitmap updates */
#define OCFS2_WINDOW_MOVE_CREDITS (OCFS2_INODE_UPDATE_CREDITS \
@@ -332,13 +387,21 @@ int ocfs2_journal_dirty_data(handle_t *handle,
* for the dinode, one for the new block. */
#define OCFS2_SIMPLE_DIR_EXTEND_CREDITS (2)
-/* file update (nlink, etc) + directory mtime/ctime + dir entry block */
-#define OCFS2_LINK_CREDITS (2*OCFS2_INODE_UPDATE_CREDITS + 1)
+/* file update (nlink, etc) + directory mtime/ctime + dir entry block + quota
+ * update on dir */
+static inline int ocfs2_link_credits(struct super_block *sb)
+{
+ return 2*OCFS2_INODE_UPDATE_CREDITS + 1 +
+ ocfs2_quota_trans_credits(sb);
+}
/* inode + dir inode (if we unlink a dir), + dir entry block + orphan
* dir inode link */
-#define OCFS2_UNLINK_CREDITS (2 * OCFS2_INODE_UPDATE_CREDITS + 1 \
- + OCFS2_LINK_CREDITS)
+static inline int ocfs2_unlink_credits(struct super_block *sb)
+{
+ /* The quota update from ocfs2_link_credits is unused here... */
+ return 2 * OCFS2_INODE_UPDATE_CREDITS + 1 + ocfs2_link_credits(sb);
+}
/* dinode + orphan dir dinode + inode alloc dinode + orphan dir entry +
* inode alloc group descriptor */
@@ -347,8 +410,10 @@ int ocfs2_journal_dirty_data(handle_t *handle,
/* dinode update, old dir dinode update, new dir dinode update, old
* dir dir entry, new dir dir entry, dir entry update for renaming
* directory + target unlink */
-#define OCFS2_RENAME_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 3 \
- + OCFS2_UNLINK_CREDITS)
+static inline int ocfs2_rename_credits(struct super_block *sb)
+{
+ return 3 * OCFS2_INODE_UPDATE_CREDITS + 3 + ocfs2_unlink_credits(sb);
+}
/* global bitmap dinode, group desc., relinked group,
* suballocator dinode, group desc., relinked group,
@@ -386,18 +451,19 @@ static inline int ocfs2_calc_extend_credits(struct super_block *sb,
* credit for the dinode there. */
extent_blocks = 1 + 1 + le16_to_cpu(root_el->l_tree_depth);
- return bitmap_blocks + sysfile_bitmap_blocks + extent_blocks;
+ return bitmap_blocks + sysfile_bitmap_blocks + extent_blocks +
+ ocfs2_quota_trans_credits(sb);
}
static inline int ocfs2_calc_symlink_credits(struct super_block *sb)
{
- int blocks = OCFS2_MKNOD_CREDITS;
+ int blocks = ocfs2_mknod_credits(sb);
/* links can be longer than one block so we may update many
* within our single allocated extent. */
blocks += ocfs2_clusters_to_blocks(sb, 1);
- return blocks;
+ return blocks + ocfs2_quota_trans_credits(sb);
}
static inline int ocfs2_calc_group_alloc_credits(struct super_block *sb,
@@ -434,6 +500,8 @@ static inline int ocfs2_calc_tree_trunc_credits(struct super_block *sb,
/* update to the truncate log. */
credits += OCFS2_TRUNCATE_LOG_UPDATE;
+ credits += ocfs2_quota_trans_credits(sb);
+
return credits;
}
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 687b28713c3..ec70cdbe77f 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -36,6 +36,7 @@
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "inode.h"
#include "journal.h"
@@ -248,8 +249,8 @@ int ocfs2_load_local_alloc(struct ocfs2_super *osb)
goto bail;
}
- status = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1,
- &alloc_bh, OCFS2_BH_IGNORE_CACHE);
+ status = ocfs2_read_inode_block_full(inode, &alloc_bh,
+ OCFS2_BH_IGNORE_CACHE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -382,8 +383,8 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
}
memcpy(alloc_copy, alloc, bh->b_size);
- status = ocfs2_journal_access(handle, local_alloc_inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, local_alloc_inode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto out_commit;
@@ -459,8 +460,8 @@ int ocfs2_begin_local_alloc_recovery(struct ocfs2_super *osb,
mutex_lock(&inode->i_mutex);
- status = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1,
- &alloc_bh, OCFS2_BH_IGNORE_CACHE);
+ status = ocfs2_read_inode_block_full(inode, &alloc_bh,
+ OCFS2_BH_IGNORE_CACHE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -476,6 +477,7 @@ int ocfs2_begin_local_alloc_recovery(struct ocfs2_super *osb,
alloc = (struct ocfs2_dinode *) alloc_bh->b_data;
ocfs2_clear_local_alloc(alloc);
+ ocfs2_compute_meta_ecc(osb->sb, alloc_bh->b_data, &alloc->i_check);
status = ocfs2_write_block(osb, alloc_bh, inode);
if (status < 0)
mlog_errno(status);
@@ -762,9 +764,9 @@ int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb,
* delete bits from it! */
*num_bits = bits_wanted;
- status = ocfs2_journal_access(handle, local_alloc_inode,
- osb->local_alloc_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, local_alloc_inode,
+ osb->local_alloc_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1240,9 +1242,9 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
}
memcpy(alloc_copy, alloc, osb->local_alloc_bh->b_size);
- status = ocfs2_journal_access(handle, local_alloc_inode,
- osb->local_alloc_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, local_alloc_inode,
+ osb->local_alloc_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 2545e7402ef..084aba86c3b 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -40,6 +40,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/highmem.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_NAMEI
#include <cluster/masklog.h>
@@ -61,17 +62,18 @@
#include "sysfile.h"
#include "uptodate.h"
#include "xattr.h"
+#include "acl.h"
#include "buffer_head_io.h"
static int ocfs2_mknod_locked(struct ocfs2_super *osb,
struct inode *dir,
- struct dentry *dentry, int mode,
+ struct inode *inode,
+ struct dentry *dentry,
dev_t dev,
struct buffer_head **new_fe_bh,
struct buffer_head *parent_fe_bh,
handle_t *handle,
- struct inode **ret_inode,
struct ocfs2_alloc_context *inode_ac);
static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
@@ -186,6 +188,35 @@ bail:
return ret;
}
+static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode)
+{
+ struct inode *inode;
+
+ inode = new_inode(dir->i_sb);
+ if (!inode) {
+ mlog(ML_ERROR, "new_inode failed!\n");
+ return NULL;
+ }
+
+ /* populate as many fields early on as possible - many of
+ * these are used by the support functions here and in
+ * callers. */
+ if (S_ISDIR(mode))
+ inode->i_nlink = 2;
+ else
+ inode->i_nlink = 1;
+ inode->i_uid = current_fsuid();
+ if (dir->i_mode & S_ISGID) {
+ inode->i_gid = dir->i_gid;
+ if (S_ISDIR(mode))
+ mode |= S_ISGID;
+ } else
+ inode->i_gid = current_fsgid();
+ inode->i_mode = mode;
+ vfs_dq_init(inode);
+ return inode;
+}
+
static int ocfs2_mknod(struct inode *dir,
struct dentry *dentry,
int mode,
@@ -201,6 +232,13 @@ static int ocfs2_mknod(struct inode *dir,
struct inode *inode = NULL;
struct ocfs2_alloc_context *inode_ac = NULL;
struct ocfs2_alloc_context *data_ac = NULL;
+ struct ocfs2_alloc_context *xattr_ac = NULL;
+ int want_clusters = 0;
+ int xattr_credits = 0;
+ struct ocfs2_security_xattr_info si = {
+ .enable = 1,
+ };
+ int did_quota_inode = 0;
mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
(unsigned long)dev, dentry->d_name.len,
@@ -250,17 +288,46 @@ static int ocfs2_mknod(struct inode *dir,
goto leave;
}
- /* Reserve a cluster if creating an extent based directory. */
- if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
- status = ocfs2_reserve_clusters(osb, 1, &data_ac);
- if (status < 0) {
- if (status != -ENOSPC)
- mlog_errno(status);
+ inode = ocfs2_get_init_inode(dir, mode);
+ if (!inode) {
+ status = -ENOMEM;
+ mlog_errno(status);
+ goto leave;
+ }
+
+ /* get security xattr */
+ status = ocfs2_init_security_get(inode, dir, &si);
+ if (status) {
+ if (status == -EOPNOTSUPP)
+ si.enable = 0;
+ else {
+ mlog_errno(status);
goto leave;
}
}
- handle = ocfs2_start_trans(osb, OCFS2_MKNOD_CREDITS);
+ /* calculate meta data/clusters for setting security and acl xattr */
+ status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
+ &si, &want_clusters,
+ &xattr_credits, &xattr_ac);
+ if (status < 0) {
+ mlog_errno(status);
+ goto leave;
+ }
+
+ /* Reserve a cluster if creating an extent based directory. */
+ if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb))
+ want_clusters += 1;
+
+ status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
+ if (status < 0) {
+ if (status != -ENOSPC)
+ mlog_errno(status);
+ goto leave;
+ }
+
+ handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb) +
+ xattr_credits);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
@@ -268,10 +335,19 @@ static int ocfs2_mknod(struct inode *dir,
goto leave;
}
+ /* We don't use standard VFS wrapper because we don't want vfs_dq_init
+ * to be called. */
+ if (sb_any_quota_active(osb->sb) &&
+ osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
+ status = -EDQUOT;
+ goto leave;
+ }
+ did_quota_inode = 1;
+
/* do the real work now. */
- status = ocfs2_mknod_locked(osb, dir, dentry, mode, dev,
+ status = ocfs2_mknod_locked(osb, dir, inode, dentry, dev,
&new_fe_bh, parent_fe_bh, handle,
- &inode, inode_ac);
+ inode_ac);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -285,8 +361,8 @@ static int ocfs2_mknod(struct inode *dir,
goto leave;
}
- status = ocfs2_journal_access(handle, dir, parent_fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, dir, parent_fe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -300,6 +376,22 @@ static int ocfs2_mknod(struct inode *dir,
inc_nlink(dir);
}
+ status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
+ xattr_ac, data_ac);
+ if (status < 0) {
+ mlog_errno(status);
+ goto leave;
+ }
+
+ if (si.enable) {
+ status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
+ xattr_ac, data_ac);
+ if (status < 0) {
+ mlog_errno(status);
+ goto leave;
+ }
+ }
+
status = ocfs2_add_entry(handle, dentry, inode,
OCFS2_I(inode)->ip_blkno, parent_fe_bh,
de_bh);
@@ -320,6 +412,8 @@ static int ocfs2_mknod(struct inode *dir,
d_instantiate(dentry, inode);
status = 0;
leave:
+ if (status < 0 && did_quota_inode)
+ vfs_dq_free_inode(inode);
if (handle)
ocfs2_commit_trans(osb, handle);
@@ -331,9 +425,13 @@ leave:
brelse(new_fe_bh);
brelse(de_bh);
brelse(parent_fe_bh);
+ kfree(si.name);
+ kfree(si.value);
- if ((status < 0) && inode)
+ if ((status < 0) && inode) {
+ clear_nlink(inode);
iput(inode);
+ }
if (inode_ac)
ocfs2_free_alloc_context(inode_ac);
@@ -341,6 +439,9 @@ leave:
if (data_ac)
ocfs2_free_alloc_context(data_ac);
+ if (xattr_ac)
+ ocfs2_free_alloc_context(xattr_ac);
+
mlog_exit(status);
return status;
@@ -348,12 +449,12 @@ leave:
static int ocfs2_mknod_locked(struct ocfs2_super *osb,
struct inode *dir,
- struct dentry *dentry, int mode,
+ struct inode *inode,
+ struct dentry *dentry,
dev_t dev,
struct buffer_head **new_fe_bh,
struct buffer_head *parent_fe_bh,
handle_t *handle,
- struct inode **ret_inode,
struct ocfs2_alloc_context *inode_ac)
{
int status = 0;
@@ -361,14 +462,12 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
struct ocfs2_extent_list *fel;
u64 fe_blkno = 0;
u16 suballoc_bit;
- struct inode *inode = NULL;
- mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
- (unsigned long)dev, dentry->d_name.len,
+ mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
+ inode->i_mode, (unsigned long)dev, dentry->d_name.len,
dentry->d_name.name);
*new_fe_bh = NULL;
- *ret_inode = NULL;
status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit,
&fe_blkno);
@@ -377,23 +476,11 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
goto leave;
}
- inode = new_inode(dir->i_sb);
- if (!inode) {
- status = -ENOMEM;
- mlog(ML_ERROR, "new_inode failed!\n");
- goto leave;
- }
-
/* populate as many fields early on as possible - many of
* these are used by the support functions here and in
* callers. */
inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
OCFS2_I(inode)->ip_blkno = fe_blkno;
- if (S_ISDIR(mode))
- inode->i_nlink = 2;
- else
- inode->i_nlink = 1;
- inode->i_mode = mode;
spin_lock(&osb->osb_lock);
inode->i_generation = osb->s_next_generation++;
spin_unlock(&osb->osb_lock);
@@ -406,8 +493,8 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
}
ocfs2_set_new_buffer_uptodate(inode, *new_fe_bh);
- status = ocfs2_journal_access(handle, inode, *new_fe_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_di(handle, inode, *new_fe_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -421,17 +508,11 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
fe->i_blkno = cpu_to_le64(fe_blkno);
fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
- fe->i_uid = cpu_to_le32(current_fsuid());
- if (dir->i_mode & S_ISGID) {
- fe->i_gid = cpu_to_le32(dir->i_gid);
- if (S_ISDIR(mode))
- mode |= S_ISGID;
- } else
- fe->i_gid = cpu_to_le32(current_fsgid());
- fe->i_mode = cpu_to_le16(mode);
- if (S_ISCHR(mode) || S_ISBLK(mode))
+ fe->i_uid = cpu_to_le32(inode->i_uid);
+ fe->i_gid = cpu_to_le32(inode->i_gid);
+ fe->i_mode = cpu_to_le16(inode->i_mode);
+ if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
-
fe->i_links_count = cpu_to_le16(inode->i_nlink);
fe->i_last_eb_blk = 0;
@@ -446,7 +527,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
/*
* If supported, directories start with inline data.
*/
- if (S_ISDIR(mode) && ocfs2_supports_inline_data(osb)) {
+ if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
u16 feat = le16_to_cpu(fe->i_dyn_features);
fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
@@ -465,15 +546,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
goto leave;
}
- if (ocfs2_populate_inode(inode, fe, 1) < 0) {
- mlog(ML_ERROR, "populate inode failed! bh->b_blocknr=%llu, "
- "i_blkno=%llu, i_ino=%lu\n",
- (unsigned long long)(*new_fe_bh)->b_blocknr,
- (unsigned long long)le64_to_cpu(fe->i_blkno),
- inode->i_ino);
- BUG();
- }
-
+ ocfs2_populate_inode(inode, fe, 1);
ocfs2_inode_set_new(osb, inode);
if (!ocfs2_mount_local(osb)) {
status = ocfs2_create_new_inode_locks(inode);
@@ -484,17 +557,12 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
status = 0; /* error in ocfs2_create_new_inode_locks is not
* critical */
- *ret_inode = inode;
leave:
if (status < 0) {
if (*new_fe_bh) {
brelse(*new_fe_bh);
*new_fe_bh = NULL;
}
- if (inode) {
- clear_nlink(inode);
- iput(inode);
- }
}
mlog_exit(status);
@@ -588,7 +656,7 @@ static int ocfs2_link(struct dentry *old_dentry,
goto out_unlock_inode;
}
- handle = ocfs2_start_trans(osb, OCFS2_LINK_CREDITS);
+ handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
handle = NULL;
@@ -596,8 +664,8 @@ static int ocfs2_link(struct dentry *old_dentry,
goto out_unlock_inode;
}
- err = ocfs2_journal_access(handle, inode, fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ err = ocfs2_journal_access_di(handle, inode, fe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (err < 0) {
mlog_errno(err);
goto out_commit;
@@ -775,7 +843,7 @@ static int ocfs2_unlink(struct inode *dir,
}
}
- handle = ocfs2_start_trans(osb, OCFS2_UNLINK_CREDITS);
+ handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
@@ -783,8 +851,8 @@ static int ocfs2_unlink(struct inode *dir,
goto leave;
}
- status = ocfs2_journal_access(handle, inode, fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, inode, fe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -1181,7 +1249,7 @@ static int ocfs2_rename(struct inode *old_dir,
}
}
- handle = ocfs2_start_trans(osb, OCFS2_RENAME_CREDITS);
+ handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
@@ -1197,8 +1265,8 @@ static int ocfs2_rename(struct inode *old_dir,
goto bail;
}
}
- status = ocfs2_journal_access(handle, new_inode, newfe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, new_inode, newfe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1244,8 +1312,8 @@ static int ocfs2_rename(struct inode *old_dir,
old_inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(old_inode);
- status = ocfs2_journal_access(handle, old_inode, old_inode_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, old_inode, old_inode_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status >= 0) {
old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
@@ -1321,9 +1389,9 @@ static int ocfs2_rename(struct inode *old_dir,
(int)old_dir_nlink, old_dir->i_nlink);
} else {
struct ocfs2_dinode *fe;
- status = ocfs2_journal_access(handle, old_dir,
- old_dir_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, old_dir,
+ old_dir_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
fe->i_links_count = cpu_to_le16(old_dir->i_nlink);
status = ocfs2_journal_dirty(handle, old_dir_bh);
@@ -1496,6 +1564,13 @@ static int ocfs2_symlink(struct inode *dir,
handle_t *handle = NULL;
struct ocfs2_alloc_context *inode_ac = NULL;
struct ocfs2_alloc_context *data_ac = NULL;
+ struct ocfs2_alloc_context *xattr_ac = NULL;
+ int want_clusters = 0;
+ int xattr_credits = 0;
+ struct ocfs2_security_xattr_info si = {
+ .enable = 1,
+ };
+ int did_quota = 0, did_quota_inode = 0;
mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
dentry, symname, dentry->d_name.len, dentry->d_name.name);
@@ -1542,17 +1617,46 @@ static int ocfs2_symlink(struct inode *dir,
goto bail;
}
- /* don't reserve bitmap space for fast symlinks. */
- if (l > ocfs2_fast_symlink_chars(sb)) {
- status = ocfs2_reserve_clusters(osb, 1, &data_ac);
+ inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
+ if (!inode) {
+ status = -ENOMEM;
+ mlog_errno(status);
+ goto bail;
+ }
+
+ /* get security xattr */
+ status = ocfs2_init_security_get(inode, dir, &si);
+ if (status) {
+ if (status == -EOPNOTSUPP)
+ si.enable = 0;
+ else {
+ mlog_errno(status);
+ goto bail;
+ }
+ }
+
+ /* calculate meta data/clusters for setting security xattr */
+ if (si.enable) {
+ status = ocfs2_calc_security_init(dir, &si, &want_clusters,
+ &xattr_credits, &xattr_ac);
if (status < 0) {
- if (status != -ENOSPC)
- mlog_errno(status);
+ mlog_errno(status);
goto bail;
}
}
- handle = ocfs2_start_trans(osb, credits);
+ /* don't reserve bitmap space for fast symlinks. */
+ if (l > ocfs2_fast_symlink_chars(sb))
+ want_clusters += 1;
+
+ status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
+ if (status < 0) {
+ if (status != -ENOSPC)
+ mlog_errno(status);
+ goto bail;
+ }
+
+ handle = ocfs2_start_trans(osb, credits + xattr_credits);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
@@ -1560,10 +1664,18 @@ static int ocfs2_symlink(struct inode *dir,
goto bail;
}
- status = ocfs2_mknod_locked(osb, dir, dentry,
- S_IFLNK | S_IRWXUGO, 0,
- &new_fe_bh, parent_fe_bh, handle,
- &inode, inode_ac);
+ /* We don't use standard VFS wrapper because we don't want vfs_dq_init
+ * to be called. */
+ if (sb_any_quota_active(osb->sb) &&
+ osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
+ status = -EDQUOT;
+ goto bail;
+ }
+ did_quota_inode = 1;
+
+ status = ocfs2_mknod_locked(osb, dir, inode, dentry,
+ 0, &new_fe_bh, parent_fe_bh, handle,
+ inode_ac);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1576,6 +1688,12 @@ static int ocfs2_symlink(struct inode *dir,
u32 offset = 0;
inode->i_op = &ocfs2_symlink_inode_operations;
+ if (vfs_dq_alloc_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, 1))) {
+ status = -EDQUOT;
+ goto bail;
+ }
+ did_quota = 1;
status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
new_fe_bh,
handle, data_ac, NULL,
@@ -1614,6 +1732,15 @@ static int ocfs2_symlink(struct inode *dir,
}
}
+ if (si.enable) {
+ status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
+ xattr_ac, data_ac);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+ }
+
status = ocfs2_add_entry(handle, dentry, inode,
le64_to_cpu(fe->i_blkno), parent_fe_bh,
de_bh);
@@ -1632,6 +1759,11 @@ static int ocfs2_symlink(struct inode *dir,
dentry->d_op = &ocfs2_dentry_ops;
d_instantiate(dentry, inode);
bail:
+ if (status < 0 && did_quota)
+ vfs_dq_free_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, 1));
+ if (status < 0 && did_quota_inode)
+ vfs_dq_free_inode(inode);
if (handle)
ocfs2_commit_trans(osb, handle);
@@ -1640,12 +1772,18 @@ bail:
brelse(new_fe_bh);
brelse(parent_fe_bh);
brelse(de_bh);
+ kfree(si.name);
+ kfree(si.value);
if (inode_ac)
ocfs2_free_alloc_context(inode_ac);
if (data_ac)
ocfs2_free_alloc_context(data_ac);
- if ((status < 0) && inode)
+ if (xattr_ac)
+ ocfs2_free_alloc_context(xattr_ac);
+ if ((status < 0) && inode) {
+ clear_nlink(inode);
iput(inode);
+ }
mlog_exit(status);
@@ -1754,16 +1892,14 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
- status = ocfs2_read_block(orphan_dir_inode,
- OCFS2_I(orphan_dir_inode)->ip_blkno,
- &orphan_dir_bh);
+ status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
if (status < 0) {
mlog_errno(status);
goto leave;
}
- status = ocfs2_journal_access(handle, orphan_dir_inode, orphan_dir_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, orphan_dir_inode, orphan_dir_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -1850,8 +1986,8 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
goto leave;
}
- status = ocfs2_journal_access(handle,orphan_dir_inode, orphan_dir_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle,orphan_dir_inode, orphan_dir_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 3fed9e3d899..ad5c24a29ed 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -161,6 +161,7 @@ enum ocfs2_vol_state
{
VOLUME_INIT = 0,
VOLUME_MOUNTED,
+ VOLUME_MOUNTED_QUOTAS,
VOLUME_DISMOUNTED,
VOLUME_DISABLED
};
@@ -195,6 +196,9 @@ enum ocfs2_mount_options
OCFS2_MOUNT_LOCALFLOCKS = 1 << 5, /* No cluster aware user file locks */
OCFS2_MOUNT_NOUSERXATTR = 1 << 6, /* No user xattr */
OCFS2_MOUNT_INODE64 = 1 << 7, /* Allow inode numbers > 2^32 */
+ OCFS2_MOUNT_POSIX_ACL = 1 << 8, /* POSIX access control lists */
+ OCFS2_MOUNT_USRQUOTA = 1 << 9, /* We support user quotas */
+ OCFS2_MOUNT_GRPQUOTA = 1 << 10, /* We support group quotas */
};
#define OCFS2_OSB_SOFT_RO 0x0001
@@ -205,6 +209,7 @@ enum ocfs2_mount_options
struct ocfs2_journal;
struct ocfs2_slot_info;
struct ocfs2_recovery_map;
+struct ocfs2_quota_recovery;
struct ocfs2_super
{
struct task_struct *commit_task;
@@ -286,10 +291,11 @@ struct ocfs2_super
char *local_alloc_debug_buf;
#endif
- /* Next two fields are for local node slot recovery during
+ /* Next three fields are for local node slot recovery during
* mount. */
int dirty;
struct ocfs2_dinode *local_alloc_copy;
+ struct ocfs2_quota_recovery *quota_rec;
struct ocfs2_alloc_stats alloc_stats;
char dev_str[20]; /* "major,minor" of the device */
@@ -333,6 +339,10 @@ struct ocfs2_super
#define OCFS2_SB(sb) ((struct ocfs2_super *)(sb)->s_fs_info)
+/* Useful typedef for passing around journal access functions */
+typedef int (*ocfs2_journal_access_func)(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, int type);
+
static inline int ocfs2_should_order_data(struct inode *inode)
{
if (!S_ISREG(inode->i_mode))
@@ -376,6 +386,13 @@ static inline int ocfs2_supports_xattr(struct ocfs2_super *osb)
return 0;
}
+static inline int ocfs2_meta_ecc(struct ocfs2_super *osb)
+{
+ if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_META_ECC)
+ return 1;
+ return 0;
+}
+
/* set / clear functions because cluster events can make these happen
* in parallel so we want the transitions to be atomic. this also
* means that any future flags osb_flags must be protected by spinlock
@@ -443,39 +460,19 @@ static inline int ocfs2_uses_extended_slot_map(struct ocfs2_super *osb)
#define OCFS2_IS_VALID_DINODE(ptr) \
(!strcmp((ptr)->i_signature, OCFS2_INODE_SIGNATURE))
-#define OCFS2_RO_ON_INVALID_DINODE(__sb, __di) do { \
- typeof(__di) ____di = (__di); \
- ocfs2_error((__sb), \
- "Dinode # %llu has bad signature %.*s", \
- (unsigned long long)le64_to_cpu((____di)->i_blkno), 7, \
- (____di)->i_signature); \
-} while (0)
-
#define OCFS2_IS_VALID_EXTENT_BLOCK(ptr) \
(!strcmp((ptr)->h_signature, OCFS2_EXTENT_BLOCK_SIGNATURE))
-#define OCFS2_RO_ON_INVALID_EXTENT_BLOCK(__sb, __eb) do { \
- typeof(__eb) ____eb = (__eb); \
- ocfs2_error((__sb), \
- "Extent Block # %llu has bad signature %.*s", \
- (unsigned long long)le64_to_cpu((____eb)->h_blkno), 7, \
- (____eb)->h_signature); \
-} while (0)
-
#define OCFS2_IS_VALID_GROUP_DESC(ptr) \
(!strcmp((ptr)->bg_signature, OCFS2_GROUP_DESC_SIGNATURE))
-#define OCFS2_RO_ON_INVALID_GROUP_DESC(__sb, __gd) do { \
- typeof(__gd) ____gd = (__gd); \
- ocfs2_error((__sb), \
- "Group Descriptor # %llu has bad signature %.*s", \
- (unsigned long long)le64_to_cpu((____gd)->bg_blkno), 7, \
- (____gd)->bg_signature); \
-} while (0)
#define OCFS2_IS_VALID_XATTR_BLOCK(ptr) \
(!strcmp((ptr)->xb_signature, OCFS2_XATTR_BLOCK_SIGNATURE))
+#define OCFS2_IS_VALID_DIR_TRAILER(ptr) \
+ (!strcmp((ptr)->db_signature, OCFS2_DIR_TRAILER_SIGNATURE))
+
static inline unsigned long ino_from_blkno(struct super_block *sb,
u64 blkno)
{
@@ -632,5 +629,6 @@ static inline s16 ocfs2_get_inode_steal_slot(struct ocfs2_super *osb)
#define ocfs2_clear_bit ext2_clear_bit
#define ocfs2_test_bit ext2_test_bit
#define ocfs2_find_next_zero_bit ext2_find_next_zero_bit
+#define ocfs2_find_next_bit ext2_find_next_bit
#endif /* OCFS2_H */
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 5e0c0d0aef7..c7ae45aaa36 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -65,6 +65,7 @@
#define OCFS2_EXTENT_BLOCK_SIGNATURE "EXBLK01"
#define OCFS2_GROUP_DESC_SIGNATURE "GROUP01"
#define OCFS2_XATTR_BLOCK_SIGNATURE "XATTR01"
+#define OCFS2_DIR_TRAILER_SIGNATURE "DIRTRL1"
/* Compatibility flags */
#define OCFS2_HAS_COMPAT_FEATURE(sb,mask) \
@@ -93,8 +94,11 @@
| OCFS2_FEATURE_INCOMPAT_INLINE_DATA \
| OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP \
| OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK \
- | OCFS2_FEATURE_INCOMPAT_XATTR)
-#define OCFS2_FEATURE_RO_COMPAT_SUPP OCFS2_FEATURE_RO_COMPAT_UNWRITTEN
+ | OCFS2_FEATURE_INCOMPAT_XATTR \
+ | OCFS2_FEATURE_INCOMPAT_META_ECC)
+#define OCFS2_FEATURE_RO_COMPAT_SUPP (OCFS2_FEATURE_RO_COMPAT_UNWRITTEN \
+ | OCFS2_FEATURE_RO_COMPAT_USRQUOTA \
+ | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
/*
* Heartbeat-only devices are missing journals and other files. The
@@ -147,6 +151,9 @@
/* Support for extended attributes */
#define OCFS2_FEATURE_INCOMPAT_XATTR 0x0200
+/* Metadata checksum and error correction */
+#define OCFS2_FEATURE_INCOMPAT_META_ECC 0x0800
+
/*
* backup superblock flag is used to indicate that this volume
* has backup superblocks.
@@ -163,6 +170,12 @@
*/
#define OCFS2_FEATURE_RO_COMPAT_UNWRITTEN 0x0001
+/*
+ * Maintain quota information for this filesystem
+ */
+#define OCFS2_FEATURE_RO_COMPAT_USRQUOTA 0x0002
+#define OCFS2_FEATURE_RO_COMPAT_GRPQUOTA 0x0004
+
/* The byte offset of the first backup block will be 1G.
* The following will be 4G, 16G, 64G, 256G and 1T.
*/
@@ -192,6 +205,7 @@
#define OCFS2_HEARTBEAT_FL (0x00000200) /* Heartbeat area */
#define OCFS2_CHAIN_FL (0x00000400) /* Chain allocator */
#define OCFS2_DEALLOC_FL (0x00000800) /* Truncate log */
+#define OCFS2_QUOTA_FL (0x00001000) /* Quota file */
/*
* Flags on ocfs2_dinode.i_dyn_features
@@ -329,13 +343,17 @@ enum {
#define OCFS2_FIRST_ONLINE_SYSTEM_INODE SLOT_MAP_SYSTEM_INODE
HEARTBEAT_SYSTEM_INODE,
GLOBAL_BITMAP_SYSTEM_INODE,
-#define OCFS2_LAST_GLOBAL_SYSTEM_INODE GLOBAL_BITMAP_SYSTEM_INODE
+ USER_QUOTA_SYSTEM_INODE,
+ GROUP_QUOTA_SYSTEM_INODE,
+#define OCFS2_LAST_GLOBAL_SYSTEM_INODE GROUP_QUOTA_SYSTEM_INODE
ORPHAN_DIR_SYSTEM_INODE,
EXTENT_ALLOC_SYSTEM_INODE,
INODE_ALLOC_SYSTEM_INODE,
JOURNAL_SYSTEM_INODE,
LOCAL_ALLOC_SYSTEM_INODE,
TRUNCATE_LOG_SYSTEM_INODE,
+ LOCAL_USER_QUOTA_SYSTEM_INODE,
+ LOCAL_GROUP_QUOTA_SYSTEM_INODE,
NUM_SYSTEM_INODES
};
@@ -349,6 +367,8 @@ static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = {
[SLOT_MAP_SYSTEM_INODE] = { "slot_map", 0, S_IFREG | 0644 },
[HEARTBEAT_SYSTEM_INODE] = { "heartbeat", OCFS2_HEARTBEAT_FL, S_IFREG | 0644 },
[GLOBAL_BITMAP_SYSTEM_INODE] = { "global_bitmap", 0, S_IFREG | 0644 },
+ [USER_QUOTA_SYSTEM_INODE] = { "aquota.user", OCFS2_QUOTA_FL, S_IFREG | 0644 },
+ [GROUP_QUOTA_SYSTEM_INODE] = { "aquota.group", OCFS2_QUOTA_FL, S_IFREG | 0644 },
/* Slot-specific system inodes (one copy per slot) */
[ORPHAN_DIR_SYSTEM_INODE] = { "orphan_dir:%04d", 0, S_IFDIR | 0755 },
@@ -356,7 +376,9 @@ static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = {
[INODE_ALLOC_SYSTEM_INODE] = { "inode_alloc:%04d", OCFS2_BITMAP_FL | OCFS2_CHAIN_FL, S_IFREG | 0644 },
[JOURNAL_SYSTEM_INODE] = { "journal:%04d", OCFS2_JOURNAL_FL, S_IFREG | 0644 },
[LOCAL_ALLOC_SYSTEM_INODE] = { "local_alloc:%04d", OCFS2_BITMAP_FL | OCFS2_LOCAL_ALLOC_FL, S_IFREG | 0644 },
- [TRUNCATE_LOG_SYSTEM_INODE] = { "truncate_log:%04d", OCFS2_DEALLOC_FL, S_IFREG | 0644 }
+ [TRUNCATE_LOG_SYSTEM_INODE] = { "truncate_log:%04d", OCFS2_DEALLOC_FL, S_IFREG | 0644 },
+ [LOCAL_USER_QUOTA_SYSTEM_INODE] = { "aquota.user:%04d", OCFS2_QUOTA_FL, S_IFREG | 0644 },
+ [LOCAL_GROUP_QUOTA_SYSTEM_INODE] = { "aquota.group:%04d", OCFS2_QUOTA_FL, S_IFREG | 0644 },
};
/* Parameter passed from mount.ocfs2 to module */
@@ -410,6 +432,22 @@ static unsigned char ocfs2_type_by_mode[S_IFMT >> S_SHIFT] = {
#define OCFS2_RAW_SB(dinode) (&((dinode)->id2.i_super))
/*
+ * Block checking structure. This is used in metadata to validate the
+ * contents. If OCFS2_FEATURE_INCOMPAT_META_ECC is not set, it is all
+ * zeros.
+ */
+struct ocfs2_block_check {
+/*00*/ __le32 bc_crc32e; /* 802.3 Ethernet II CRC32 */
+ __le16 bc_ecc; /* Single-error-correction parity vector.
+ This is a simple Hamming code dependant
+ on the blocksize. OCFS2's maximum
+ blocksize, 4K, requires 16 parity bits,
+ so we fit in __le16. */
+ __le16 bc_reserved1;
+/*08*/
+};
+
+/*
* On disk extent record for OCFS2
* It describes a range of clusters on disk.
*
@@ -496,7 +534,7 @@ struct ocfs2_truncate_log {
struct ocfs2_extent_block
{
/*00*/ __u8 h_signature[8]; /* Signature for verification */
- __le64 h_reserved1;
+ struct ocfs2_block_check h_check; /* Error checking */
/*10*/ __le16 h_suballoc_slot; /* Slot suballocator this
extent_header belongs to */
__le16 h_suballoc_bit; /* Bit offset in suballocator
@@ -666,7 +704,8 @@ struct ocfs2_dinode {
was set in i_flags */
__le16 i_dyn_features;
__le64 i_xattr_loc;
-/*80*/ __le64 i_reserved2[7];
+/*80*/ struct ocfs2_block_check i_check; /* Error checking */
+/*88*/ __le64 i_reserved2[6];
/*B8*/ union {
__le64 i_pad1; /* Generic way to refer to this
64bit union */
@@ -715,6 +754,34 @@ struct ocfs2_dir_entry {
} __attribute__ ((packed));
/*
+ * Per-block record for the unindexed directory btree. This is carefully
+ * crafted so that the rec_len and name_len records of an ocfs2_dir_entry are
+ * mirrored. That way, the directory manipulation code needs a minimal amount
+ * of update.
+ *
+ * NOTE: Keep this structure aligned to a multiple of 4 bytes.
+ */
+struct ocfs2_dir_block_trailer {
+/*00*/ __le64 db_compat_inode; /* Always zero. Was inode */
+
+ __le16 db_compat_rec_len; /* Backwards compatible with
+ * ocfs2_dir_entry. */
+ __u8 db_compat_name_len; /* Always zero. Was name_len */
+ __u8 db_reserved0;
+ __le16 db_reserved1;
+ __le16 db_free_rec_len; /* Size of largest empty hole
+ * in this block. (unused) */
+/*10*/ __u8 db_signature[8]; /* Signature for verification */
+ __le64 db_reserved2;
+ __le64 db_free_next; /* Next block in list (unused) */
+/*20*/ __le64 db_blkno; /* Offset on disk, in blocks */
+ __le64 db_parent_dinode; /* dinode which owns me, in
+ blocks */
+/*30*/ struct ocfs2_block_check db_check; /* Error checking */
+/*40*/
+};
+
+/*
* On disk allocator group structure for OCFS2
*/
struct ocfs2_group_desc
@@ -733,7 +800,8 @@ struct ocfs2_group_desc
/*20*/ __le64 bg_parent_dinode; /* dinode which owns me, in
blocks */
__le64 bg_blkno; /* Offset on disk, in blocks */
-/*30*/ __le64 bg_reserved2[2];
+/*30*/ struct ocfs2_block_check bg_check; /* Error checking */
+ __le64 bg_reserved2;
/*40*/ __u8 bg_bitmap[0];
};
@@ -776,7 +844,12 @@ struct ocfs2_xattr_header {
in this extent record,
only valid in the first
bucket. */
- __le64 xh_csum;
+ struct ocfs2_block_check xh_check; /* Error checking
+ (Note, this is only
+ used for xattr
+ buckets. A block uses
+ xb_check and sets
+ this field to zero.) */
struct ocfs2_xattr_entry xh_entries[0]; /* xattr entry list. */
};
@@ -827,7 +900,7 @@ struct ocfs2_xattr_block {
block group */
__le32 xb_fs_generation; /* Must match super block */
/*10*/ __le64 xb_blkno; /* Offset on disk, in blocks */
- __le64 xb_csum;
+ struct ocfs2_block_check xb_check; /* Error checking */
/*20*/ __le16 xb_flags; /* Indicates whether this block contains
real xattr or a xattr tree. */
__le16 xb_reserved0;
@@ -868,6 +941,128 @@ static inline int ocfs2_xattr_get_type(struct ocfs2_xattr_entry *xe)
return xe->xe_type & OCFS2_XATTR_TYPE_MASK;
}
+/*
+ * On disk structures for global quota file
+ */
+
+/* Magic numbers and known versions for global quota files */
+#define OCFS2_GLOBAL_QMAGICS {\
+ 0x0cf52470, /* USRQUOTA */ \
+ 0x0cf52471 /* GRPQUOTA */ \
+}
+
+#define OCFS2_GLOBAL_QVERSIONS {\
+ 0, \
+ 0, \
+}
+
+
+/* Each block of each quota file has a certain fixed number of bytes reserved
+ * for OCFS2 internal use at its end. OCFS2 can use it for things like
+ * checksums, etc. */
+#define OCFS2_QBLK_RESERVED_SPACE 8
+
+/* Generic header of all quota files */
+struct ocfs2_disk_dqheader {
+ __le32 dqh_magic; /* Magic number identifying file */
+ __le32 dqh_version; /* Quota format version */
+};
+
+#define OCFS2_GLOBAL_INFO_OFF (sizeof(struct ocfs2_disk_dqheader))
+
+/* Information header of global quota file (immediately follows the generic
+ * header) */
+struct ocfs2_global_disk_dqinfo {
+/*00*/ __le32 dqi_bgrace; /* Grace time for space softlimit excess */
+ __le32 dqi_igrace; /* Grace time for inode softlimit excess */
+ __le32 dqi_syncms; /* Time after which we sync local changes to
+ * global quota file */
+ __le32 dqi_blocks; /* Number of blocks in quota file */
+/*10*/ __le32 dqi_free_blk; /* First free block in quota file */
+ __le32 dqi_free_entry; /* First block with free dquot entry in quota
+ * file */
+};
+
+/* Structure with global user / group information. We reserve some space
+ * for future use. */
+struct ocfs2_global_disk_dqblk {
+/*00*/ __le32 dqb_id; /* ID the structure belongs to */
+ __le32 dqb_use_count; /* Number of nodes having reference to this structure */
+ __le64 dqb_ihardlimit; /* absolute limit on allocated inodes */
+/*10*/ __le64 dqb_isoftlimit; /* preferred inode limit */
+ __le64 dqb_curinodes; /* current # allocated inodes */
+/*20*/ __le64 dqb_bhardlimit; /* absolute limit on disk space */
+ __le64 dqb_bsoftlimit; /* preferred limit on disk space */
+/*30*/ __le64 dqb_curspace; /* current space occupied */
+ __le64 dqb_btime; /* time limit for excessive disk use */
+/*40*/ __le64 dqb_itime; /* time limit for excessive inode use */
+ __le64 dqb_pad1;
+/*50*/ __le64 dqb_pad2;
+};
+
+/*
+ * On-disk structures for local quota file
+ */
+
+/* Magic numbers and known versions for local quota files */
+#define OCFS2_LOCAL_QMAGICS {\
+ 0x0cf524c0, /* USRQUOTA */ \
+ 0x0cf524c1 /* GRPQUOTA */ \
+}
+
+#define OCFS2_LOCAL_QVERSIONS {\
+ 0, \
+ 0, \
+}
+
+/* Quota flags in dqinfo header */
+#define OLQF_CLEAN 0x0001 /* Quota file is empty (this should be after\
+ * quota has been cleanly turned off) */
+
+#define OCFS2_LOCAL_INFO_OFF (sizeof(struct ocfs2_disk_dqheader))
+
+/* Information header of local quota file (immediately follows the generic
+ * header) */
+struct ocfs2_local_disk_dqinfo {
+ __le32 dqi_flags; /* Flags for quota file */
+ __le32 dqi_chunks; /* Number of chunks of quota structures
+ * with a bitmap */
+ __le32 dqi_blocks; /* Number of blocks allocated for quota file */
+};
+
+/* Header of one chunk of a quota file */
+struct ocfs2_local_disk_chunk {
+ __le32 dqc_free; /* Number of free entries in the bitmap */
+ u8 dqc_bitmap[0]; /* Bitmap of entries in the corresponding
+ * chunk of quota file */
+};
+
+/* One entry in local quota file */
+struct ocfs2_local_disk_dqblk {
+/*00*/ __le64 dqb_id; /* id this quota applies to */
+ __le64 dqb_spacemod; /* Change in the amount of used space */
+/*10*/ __le64 dqb_inodemod; /* Change in the amount of used inodes */
+};
+
+
+/*
+ * The quota trailer lives at the end of each quota block.
+ */
+
+struct ocfs2_disk_dqtrailer {
+/*00*/ struct ocfs2_block_check dq_check; /* Error checking */
+/*08*/ /* Cannot be larger than OCFS2_QBLK_RESERVED_SPACE */
+};
+
+static inline struct ocfs2_disk_dqtrailer *ocfs2_block_dqtrailer(int blocksize,
+ void *buf)
+{
+ char *ptr = buf;
+ ptr += blocksize - OCFS2_QBLK_RESERVED_SPACE;
+
+ return (struct ocfs2_disk_dqtrailer *)ptr;
+}
+
#ifdef __KERNEL__
static inline int ocfs2_fast_symlink_chars(struct super_block *sb)
{
diff --git a/fs/ocfs2/ocfs2_jbd_compat.h b/fs/ocfs2/ocfs2_jbd_compat.h
deleted file mode 100644
index b91c78f8f55..00000000000
--- a/fs/ocfs2/ocfs2_jbd_compat.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/* -*- mode: c; c-basic-offset: 8; -*-
- * vim: noexpandtab sw=8 ts=8 sts=0:
- *
- * ocfs2_jbd_compat.h
- *
- * Compatibility defines for JBD.
- *
- * Copyright (C) 2008 Oracle. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-#ifndef OCFS2_JBD_COMPAT_H
-#define OCFS2_JBD_COMPAT_H
-
-#ifndef CONFIG_OCFS2_COMPAT_JBD
-# error Should not have been included
-#endif
-
-struct jbd2_inode {
- unsigned int dummy;
-};
-
-#define JBD2_BARRIER JFS_BARRIER
-#define JBD2_DEFAULT_MAX_COMMIT_AGE JBD_DEFAULT_MAX_COMMIT_AGE
-
-#define jbd2_journal_ack_err journal_ack_err
-#define jbd2_journal_clear_err journal_clear_err
-#define jbd2_journal_destroy journal_destroy
-#define jbd2_journal_dirty_metadata journal_dirty_metadata
-#define jbd2_journal_errno journal_errno
-#define jbd2_journal_extend journal_extend
-#define jbd2_journal_flush journal_flush
-#define jbd2_journal_force_commit journal_force_commit
-#define jbd2_journal_get_write_access journal_get_write_access
-#define jbd2_journal_get_undo_access journal_get_undo_access
-#define jbd2_journal_init_inode journal_init_inode
-#define jbd2_journal_invalidatepage journal_invalidatepage
-#define jbd2_journal_load journal_load
-#define jbd2_journal_lock_updates journal_lock_updates
-#define jbd2_journal_restart journal_restart
-#define jbd2_journal_start journal_start
-#define jbd2_journal_start_commit journal_start_commit
-#define jbd2_journal_stop journal_stop
-#define jbd2_journal_try_to_free_buffers journal_try_to_free_buffers
-#define jbd2_journal_unlock_updates journal_unlock_updates
-#define jbd2_journal_wipe journal_wipe
-#define jbd2_log_wait_commit log_wait_commit
-
-static inline int jbd2_journal_file_inode(handle_t *handle,
- struct jbd2_inode *inode)
-{
- return 0;
-}
-
-static inline int jbd2_journal_begin_ordered_truncate(struct jbd2_inode *inode,
- loff_t new_size)
-{
- return 0;
-}
-
-static inline void jbd2_journal_init_jbd_inode(struct jbd2_inode *jinode,
- struct inode *inode)
-{
- return;
-}
-
-static inline void jbd2_journal_release_jbd_inode(journal_t *journal,
- struct jbd2_inode *jinode)
-{
- return;
-}
-
-
-#endif /* OCFS2_JBD_COMPAT_H */
diff --git a/fs/ocfs2/ocfs2_lockid.h b/fs/ocfs2/ocfs2_lockid.h
index 82c200f7a8f..eb6f50c9cec 100644
--- a/fs/ocfs2/ocfs2_lockid.h
+++ b/fs/ocfs2/ocfs2_lockid.h
@@ -46,6 +46,7 @@ enum ocfs2_lock_type {
OCFS2_LOCK_TYPE_DENTRY,
OCFS2_LOCK_TYPE_OPEN,
OCFS2_LOCK_TYPE_FLOCK,
+ OCFS2_LOCK_TYPE_QINFO,
OCFS2_NUM_LOCK_TYPES
};
@@ -77,6 +78,9 @@ static inline char ocfs2_lock_type_char(enum ocfs2_lock_type type)
case OCFS2_LOCK_TYPE_FLOCK:
c = 'F';
break;
+ case OCFS2_LOCK_TYPE_QINFO:
+ c = 'Q';
+ break;
default:
c = '\0';
}
@@ -95,6 +99,7 @@ static char *ocfs2_lock_type_strings[] = {
[OCFS2_LOCK_TYPE_DENTRY] = "Dentry",
[OCFS2_LOCK_TYPE_OPEN] = "Open",
[OCFS2_LOCK_TYPE_FLOCK] = "Flock",
+ [OCFS2_LOCK_TYPE_QINFO] = "Quota",
};
static inline const char *ocfs2_lock_type_string(enum ocfs2_lock_type type)
diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h
new file mode 100644
index 00000000000..7365e2e0870
--- /dev/null
+++ b/fs/ocfs2/quota.h
@@ -0,0 +1,119 @@
+/*
+ * quota.h for OCFS2
+ *
+ * On disk quota structures for local and global quota file, in-memory
+ * structures.
+ *
+ */
+
+#ifndef _OCFS2_QUOTA_H
+#define _OCFS2_QUOTA_H
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/quota.h>
+#include <linux/list.h>
+#include <linux/dqblk_qtree.h>
+
+#include "ocfs2.h"
+
+/* Common stuff */
+/* id number of quota format */
+#define QFMT_OCFS2 3
+
+/*
+ * In-memory structures
+ */
+struct ocfs2_dquot {
+ struct dquot dq_dquot; /* Generic VFS dquot */
+ loff_t dq_local_off; /* Offset in the local quota file */
+ struct ocfs2_quota_chunk *dq_chunk; /* Chunk dquot is in */
+ unsigned int dq_use_count; /* Number of nodes having reference to this entry in global quota file */
+ s64 dq_origspace; /* Last globally synced space usage */
+ s64 dq_originodes; /* Last globally synced inode usage */
+};
+
+/* Description of one chunk to recover in memory */
+struct ocfs2_recovery_chunk {
+ struct list_head rc_list; /* List of chunks */
+ int rc_chunk; /* Chunk number */
+ unsigned long *rc_bitmap; /* Bitmap of entries to recover */
+};
+
+struct ocfs2_quota_recovery {
+ struct list_head r_list[MAXQUOTAS]; /* List of chunks to recover */
+};
+
+/* In-memory structure with quota header information */
+struct ocfs2_mem_dqinfo {
+ unsigned int dqi_type; /* Quota type this structure describes */
+ unsigned int dqi_chunks; /* Number of chunks in local quota file */
+ unsigned int dqi_blocks; /* Number of blocks allocated for local quota file */
+ unsigned int dqi_syncms; /* How often should we sync with other nodes */
+ unsigned int dqi_syncjiff; /* Precomputed dqi_syncms in jiffies */
+ struct list_head dqi_chunk; /* List of chunks */
+ struct inode *dqi_gqinode; /* Global quota file inode */
+ struct ocfs2_lock_res dqi_gqlock; /* Lock protecting quota information structure */
+ struct buffer_head *dqi_gqi_bh; /* Buffer head with global quota file inode - set only if inode lock is obtained */
+ int dqi_gqi_count; /* Number of holders of dqi_gqi_bh */
+ struct buffer_head *dqi_lqi_bh; /* Buffer head with local quota file inode */
+ struct buffer_head *dqi_ibh; /* Buffer with information header */
+ struct qtree_mem_dqinfo dqi_gi; /* Info about global file */
+ struct delayed_work dqi_sync_work; /* Work for syncing dquots */
+ struct ocfs2_quota_recovery *dqi_rec; /* Pointer to recovery
+ * information, in case we
+ * enable quotas on file
+ * needing it */
+};
+
+static inline struct ocfs2_dquot *OCFS2_DQUOT(struct dquot *dquot)
+{
+ return container_of(dquot, struct ocfs2_dquot, dq_dquot);
+}
+
+struct ocfs2_quota_chunk {
+ struct list_head qc_chunk; /* List of quotafile chunks */
+ int qc_num; /* Number of quota chunk */
+ struct buffer_head *qc_headerbh; /* Buffer head with chunk header */
+};
+
+extern struct kmem_cache *ocfs2_dquot_cachep;
+extern struct kmem_cache *ocfs2_qf_chunk_cachep;
+
+extern struct qtree_fmt_operations ocfs2_global_ops;
+
+struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
+ struct ocfs2_super *osb, int slot_num);
+int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
+ struct ocfs2_quota_recovery *rec,
+ int slot_num);
+void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec);
+ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data,
+ size_t len, loff_t off);
+ssize_t ocfs2_quota_write(struct super_block *sb, int type,
+ const char *data, size_t len, loff_t off);
+int ocfs2_global_read_info(struct super_block *sb, int type);
+int ocfs2_global_write_info(struct super_block *sb, int type);
+int ocfs2_global_read_dquot(struct dquot *dquot);
+int __ocfs2_sync_dquot(struct dquot *dquot, int freeing);
+static inline int ocfs2_sync_dquot(struct dquot *dquot)
+{
+ return __ocfs2_sync_dquot(dquot, 0);
+}
+static inline int ocfs2_global_release_dquot(struct dquot *dquot)
+{
+ return __ocfs2_sync_dquot(dquot, 1);
+}
+
+int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
+void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
+int ocfs2_read_quota_block(struct inode *inode, u64 v_block,
+ struct buffer_head **bh);
+
+extern struct dquot_operations ocfs2_quota_operations;
+extern struct quota_format_type ocfs2_quota_format;
+
+int ocfs2_quota_setup(void);
+void ocfs2_quota_shutdown(void);
+
+#endif /* _OCFS2_QUOTA_H */
diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c
new file mode 100644
index 00000000000..6aff8f2d3e4
--- /dev/null
+++ b/fs/ocfs2/quota_global.c
@@ -0,0 +1,1025 @@
+/*
+ * Implementation of operations over global quota file
+ */
+#include <linux/spinlock.h>
+#include <linux/fs.h>
+#include <linux/quota.h>
+#include <linux/quotaops.h>
+#include <linux/dqblk_qtree.h>
+#include <linux/jiffies.h>
+#include <linux/writeback.h>
+#include <linux/workqueue.h>
+
+#define MLOG_MASK_PREFIX ML_QUOTA
+#include <cluster/masklog.h>
+
+#include "ocfs2_fs.h"
+#include "ocfs2.h"
+#include "alloc.h"
+#include "blockcheck.h"
+#include "inode.h"
+#include "journal.h"
+#include "file.h"
+#include "sysfile.h"
+#include "dlmglue.h"
+#include "uptodate.h"
+#include "quota.h"
+
+static struct workqueue_struct *ocfs2_quota_wq = NULL;
+
+static void qsync_work_fn(struct work_struct *work);
+
+static void ocfs2_global_disk2memdqb(struct dquot *dquot, void *dp)
+{
+ struct ocfs2_global_disk_dqblk *d = dp;
+ struct mem_dqblk *m = &dquot->dq_dqb;
+
+ /* Update from disk only entries not set by the admin */
+ if (!test_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags)) {
+ m->dqb_ihardlimit = le64_to_cpu(d->dqb_ihardlimit);
+ m->dqb_isoftlimit = le64_to_cpu(d->dqb_isoftlimit);
+ }
+ if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags))
+ m->dqb_curinodes = le64_to_cpu(d->dqb_curinodes);
+ if (!test_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags)) {
+ m->dqb_bhardlimit = le64_to_cpu(d->dqb_bhardlimit);
+ m->dqb_bsoftlimit = le64_to_cpu(d->dqb_bsoftlimit);
+ }
+ if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags))
+ m->dqb_curspace = le64_to_cpu(d->dqb_curspace);
+ if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags))
+ m->dqb_btime = le64_to_cpu(d->dqb_btime);
+ if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags))
+ m->dqb_itime = le64_to_cpu(d->dqb_itime);
+ OCFS2_DQUOT(dquot)->dq_use_count = le32_to_cpu(d->dqb_use_count);
+}
+
+static void ocfs2_global_mem2diskdqb(void *dp, struct dquot *dquot)
+{
+ struct ocfs2_global_disk_dqblk *d = dp;
+ struct mem_dqblk *m = &dquot->dq_dqb;
+
+ d->dqb_id = cpu_to_le32(dquot->dq_id);
+ d->dqb_use_count = cpu_to_le32(OCFS2_DQUOT(dquot)->dq_use_count);
+ d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit);
+ d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit);
+ d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes);
+ d->dqb_bhardlimit = cpu_to_le64(m->dqb_bhardlimit);
+ d->dqb_bsoftlimit = cpu_to_le64(m->dqb_bsoftlimit);
+ d->dqb_curspace = cpu_to_le64(m->dqb_curspace);
+ d->dqb_btime = cpu_to_le64(m->dqb_btime);
+ d->dqb_itime = cpu_to_le64(m->dqb_itime);
+}
+
+static int ocfs2_global_is_id(void *dp, struct dquot *dquot)
+{
+ struct ocfs2_global_disk_dqblk *d = dp;
+ struct ocfs2_mem_dqinfo *oinfo =
+ sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+
+ if (qtree_entry_unused(&oinfo->dqi_gi, dp))
+ return 0;
+ return le32_to_cpu(d->dqb_id) == dquot->dq_id;
+}
+
+struct qtree_fmt_operations ocfs2_global_ops = {
+ .mem2disk_dqblk = ocfs2_global_mem2diskdqb,
+ .disk2mem_dqblk = ocfs2_global_disk2memdqb,
+ .is_id = ocfs2_global_is_id,
+};
+
+static int ocfs2_validate_quota_block(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ struct ocfs2_disk_dqtrailer *dqt =
+ ocfs2_block_dqtrailer(sb->s_blocksize, bh->b_data);
+
+ mlog(0, "Validating quota block %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ */
+ return ocfs2_validate_meta_ecc(sb, bh->b_data, &dqt->dq_check);
+}
+
+int ocfs2_read_quota_block(struct inode *inode, u64 v_block,
+ struct buffer_head **bh)
+{
+ int rc = 0;
+ struct buffer_head *tmp = *bh;
+
+ rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0,
+ ocfs2_validate_quota_block);
+ if (rc)
+ mlog_errno(rc);
+
+ /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */
+ if (!rc && !*bh)
+ *bh = tmp;
+
+ return rc;
+}
+
+static int ocfs2_get_quota_block(struct inode *inode, int block,
+ struct buffer_head **bh)
+{
+ u64 pblock, pcount;
+ int err;
+
+ down_read(&OCFS2_I(inode)->ip_alloc_sem);
+ err = ocfs2_extent_map_get_blocks(inode, block, &pblock, &pcount, NULL);
+ up_read(&OCFS2_I(inode)->ip_alloc_sem);
+ if (err) {
+ mlog_errno(err);
+ return err;
+ }
+ *bh = sb_getblk(inode->i_sb, pblock);
+ if (!*bh) {
+ err = -EIO;
+ mlog_errno(err);
+ }
+ return err;;
+}
+
+/* Read data from global quotafile - avoid pagecache and such because we cannot
+ * afford acquiring the locks... We use quota cluster lock to serialize
+ * operations. Caller is responsible for acquiring it. */
+ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data,
+ size_t len, loff_t off)
+{
+ struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv;
+ struct inode *gqinode = oinfo->dqi_gqinode;
+ loff_t i_size = i_size_read(gqinode);
+ int offset = off & (sb->s_blocksize - 1);
+ sector_t blk = off >> sb->s_blocksize_bits;
+ int err = 0;
+ struct buffer_head *bh;
+ size_t toread, tocopy;
+
+ if (off > i_size)
+ return 0;
+ if (off + len > i_size)
+ len = i_size - off;
+ toread = len;
+ while (toread > 0) {
+ tocopy = min_t(size_t, (sb->s_blocksize - offset), toread);
+ bh = NULL;
+ err = ocfs2_read_quota_block(gqinode, blk, &bh);
+ if (err) {
+ mlog_errno(err);
+ return err;
+ }
+ memcpy(data, bh->b_data + offset, tocopy);
+ brelse(bh);
+ offset = 0;
+ toread -= tocopy;
+ data += tocopy;
+ blk++;
+ }
+ return len;
+}
+
+/* Write to quotafile (we know the transaction is already started and has
+ * enough credits) */
+ssize_t ocfs2_quota_write(struct super_block *sb, int type,
+ const char *data, size_t len, loff_t off)
+{
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ struct inode *gqinode = oinfo->dqi_gqinode;
+ int offset = off & (sb->s_blocksize - 1);
+ sector_t blk = off >> sb->s_blocksize_bits;
+ int err = 0, new = 0, ja_type;
+ struct buffer_head *bh = NULL;
+ handle_t *handle = journal_current_handle();
+
+ if (!handle) {
+ mlog(ML_ERROR, "Quota write (off=%llu, len=%llu) cancelled "
+ "because transaction was not started.\n",
+ (unsigned long long)off, (unsigned long long)len);
+ return -EIO;
+ }
+ if (len > sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset) {
+ WARN_ON(1);
+ len = sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset;
+ }
+
+ mutex_lock_nested(&gqinode->i_mutex, I_MUTEX_QUOTA);
+ if (gqinode->i_size < off + len) {
+ down_write(&OCFS2_I(gqinode)->ip_alloc_sem);
+ err = ocfs2_extend_no_holes(gqinode, off + len, off);
+ up_write(&OCFS2_I(gqinode)->ip_alloc_sem);
+ if (err < 0)
+ goto out;
+ err = ocfs2_simple_size_update(gqinode,
+ oinfo->dqi_gqi_bh,
+ off + len);
+ if (err < 0)
+ goto out;
+ new = 1;
+ }
+ /* Not rewriting whole block? */
+ if ((offset || len < sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) &&
+ !new) {
+ err = ocfs2_read_quota_block(gqinode, blk, &bh);
+ ja_type = OCFS2_JOURNAL_ACCESS_WRITE;
+ } else {
+ err = ocfs2_get_quota_block(gqinode, blk, &bh);
+ ja_type = OCFS2_JOURNAL_ACCESS_CREATE;
+ }
+ if (err) {
+ mlog_errno(err);
+ return err;
+ }
+ lock_buffer(bh);
+ if (new)
+ memset(bh->b_data, 0, sb->s_blocksize);
+ memcpy(bh->b_data + offset, data, len);
+ flush_dcache_page(bh->b_page);
+ set_buffer_uptodate(bh);
+ unlock_buffer(bh);
+ ocfs2_set_buffer_uptodate(gqinode, bh);
+ err = ocfs2_journal_access_dq(handle, gqinode, bh, ja_type);
+ if (err < 0) {
+ brelse(bh);
+ goto out;
+ }
+ err = ocfs2_journal_dirty(handle, bh);
+ brelse(bh);
+ if (err < 0)
+ goto out;
+out:
+ if (err) {
+ mutex_unlock(&gqinode->i_mutex);
+ mlog_errno(err);
+ return err;
+ }
+ gqinode->i_version++;
+ ocfs2_mark_inode_dirty(handle, gqinode, oinfo->dqi_gqi_bh);
+ mutex_unlock(&gqinode->i_mutex);
+ return len;
+}
+
+int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex)
+{
+ int status;
+ struct buffer_head *bh = NULL;
+
+ status = ocfs2_inode_lock(oinfo->dqi_gqinode, &bh, ex);
+ if (status < 0)
+ return status;
+ spin_lock(&dq_data_lock);
+ if (!oinfo->dqi_gqi_count++)
+ oinfo->dqi_gqi_bh = bh;
+ else
+ WARN_ON(bh != oinfo->dqi_gqi_bh);
+ spin_unlock(&dq_data_lock);
+ return 0;
+}
+
+void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex)
+{
+ ocfs2_inode_unlock(oinfo->dqi_gqinode, ex);
+ brelse(oinfo->dqi_gqi_bh);
+ spin_lock(&dq_data_lock);
+ if (!--oinfo->dqi_gqi_count)
+ oinfo->dqi_gqi_bh = NULL;
+ spin_unlock(&dq_data_lock);
+}
+
+/* Read information header from global quota file */
+int ocfs2_global_read_info(struct super_block *sb, int type)
+{
+ struct inode *gqinode = NULL;
+ unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE,
+ GROUP_QUOTA_SYSTEM_INODE };
+ struct ocfs2_global_disk_dqinfo dinfo;
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ int status;
+
+ mlog_entry_void();
+
+ /* Read global header */
+ gqinode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type],
+ OCFS2_INVALID_SLOT);
+ if (!gqinode) {
+ mlog(ML_ERROR, "failed to get global quota inode (type=%d)\n",
+ type);
+ status = -EINVAL;
+ goto out_err;
+ }
+ oinfo->dqi_gi.dqi_sb = sb;
+ oinfo->dqi_gi.dqi_type = type;
+ ocfs2_qinfo_lock_res_init(&oinfo->dqi_gqlock, oinfo);
+ oinfo->dqi_gi.dqi_entry_size = sizeof(struct ocfs2_global_disk_dqblk);
+ oinfo->dqi_gi.dqi_ops = &ocfs2_global_ops;
+ oinfo->dqi_gqi_bh = NULL;
+ oinfo->dqi_gqi_count = 0;
+ oinfo->dqi_gqinode = gqinode;
+ status = ocfs2_lock_global_qf(oinfo, 0);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_err;
+ }
+ status = sb->s_op->quota_read(sb, type, (char *)&dinfo,
+ sizeof(struct ocfs2_global_disk_dqinfo),
+ OCFS2_GLOBAL_INFO_OFF);
+ ocfs2_unlock_global_qf(oinfo, 0);
+ if (status != sizeof(struct ocfs2_global_disk_dqinfo)) {
+ mlog(ML_ERROR, "Cannot read global quota info (%d).\n",
+ status);
+ if (status >= 0)
+ status = -EIO;
+ mlog_errno(status);
+ goto out_err;
+ }
+ info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace);
+ info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace);
+ oinfo->dqi_syncms = le32_to_cpu(dinfo.dqi_syncms);
+ oinfo->dqi_syncjiff = msecs_to_jiffies(oinfo->dqi_syncms);
+ oinfo->dqi_gi.dqi_blocks = le32_to_cpu(dinfo.dqi_blocks);
+ oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk);
+ oinfo->dqi_gi.dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry);
+ oinfo->dqi_gi.dqi_blocksize_bits = sb->s_blocksize_bits;
+ oinfo->dqi_gi.dqi_usable_bs = sb->s_blocksize -
+ OCFS2_QBLK_RESERVED_SPACE;
+ oinfo->dqi_gi.dqi_qtree_depth = qtree_depth(&oinfo->dqi_gi);
+ INIT_DELAYED_WORK(&oinfo->dqi_sync_work, qsync_work_fn);
+ queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work,
+ oinfo->dqi_syncjiff);
+
+out_err:
+ mlog_exit(status);
+ return status;
+}
+
+/* Write information to global quota file. Expects exlusive lock on quota
+ * file inode and quota info */
+static int __ocfs2_global_write_info(struct super_block *sb, int type)
+{
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ struct ocfs2_global_disk_dqinfo dinfo;
+ ssize_t size;
+
+ spin_lock(&dq_data_lock);
+ info->dqi_flags &= ~DQF_INFO_DIRTY;
+ dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace);
+ dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace);
+ spin_unlock(&dq_data_lock);
+ dinfo.dqi_syncms = cpu_to_le32(oinfo->dqi_syncms);
+ dinfo.dqi_blocks = cpu_to_le32(oinfo->dqi_gi.dqi_blocks);
+ dinfo.dqi_free_blk = cpu_to_le32(oinfo->dqi_gi.dqi_free_blk);
+ dinfo.dqi_free_entry = cpu_to_le32(oinfo->dqi_gi.dqi_free_entry);
+ size = sb->s_op->quota_write(sb, type, (char *)&dinfo,
+ sizeof(struct ocfs2_global_disk_dqinfo),
+ OCFS2_GLOBAL_INFO_OFF);
+ if (size != sizeof(struct ocfs2_global_disk_dqinfo)) {
+ mlog(ML_ERROR, "Cannot write global quota info structure\n");
+ if (size >= 0)
+ size = -EIO;
+ return size;
+ }
+ return 0;
+}
+
+int ocfs2_global_write_info(struct super_block *sb, int type)
+{
+ int err;
+ struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv;
+
+ err = ocfs2_qinfo_lock(info, 1);
+ if (err < 0)
+ return err;
+ err = __ocfs2_global_write_info(sb, type);
+ ocfs2_qinfo_unlock(info, 1);
+ return err;
+}
+
+/* Read in information from global quota file and acquire a reference to it.
+ * dquot_acquire() has already started the transaction and locked quota file */
+int ocfs2_global_read_dquot(struct dquot *dquot)
+{
+ int err, err2, ex = 0;
+ struct ocfs2_mem_dqinfo *info =
+ sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+
+ err = ocfs2_qinfo_lock(info, 0);
+ if (err < 0)
+ goto out;
+ err = qtree_read_dquot(&info->dqi_gi, dquot);
+ if (err < 0)
+ goto out_qlock;
+ OCFS2_DQUOT(dquot)->dq_use_count++;
+ OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace;
+ OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes;
+ if (!dquot->dq_off) { /* No real quota entry? */
+ /* Upgrade to exclusive lock for allocation */
+ err = ocfs2_qinfo_lock(info, 1);
+ if (err < 0)
+ goto out_qlock;
+ ex = 1;
+ }
+ err = qtree_write_dquot(&info->dqi_gi, dquot);
+ if (ex && info_dirty(sb_dqinfo(dquot->dq_sb, dquot->dq_type))) {
+ err2 = __ocfs2_global_write_info(dquot->dq_sb, dquot->dq_type);
+ if (!err)
+ err = err2;
+ }
+out_qlock:
+ if (ex)
+ ocfs2_qinfo_unlock(info, 1);
+ ocfs2_qinfo_unlock(info, 0);
+out:
+ if (err < 0)
+ mlog_errno(err);
+ return err;
+}
+
+/* Sync local information about quota modifications with global quota file.
+ * Caller must have started the transaction and obtained exclusive lock for
+ * global quota file inode */
+int __ocfs2_sync_dquot(struct dquot *dquot, int freeing)
+{
+ int err, err2;
+ struct super_block *sb = dquot->dq_sb;
+ int type = dquot->dq_type;
+ struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv;
+ struct ocfs2_global_disk_dqblk dqblk;
+ s64 spacechange, inodechange;
+ time_t olditime, oldbtime;
+
+ err = sb->s_op->quota_read(sb, type, (char *)&dqblk,
+ sizeof(struct ocfs2_global_disk_dqblk),
+ dquot->dq_off);
+ if (err != sizeof(struct ocfs2_global_disk_dqblk)) {
+ if (err >= 0) {
+ mlog(ML_ERROR, "Short read from global quota file "
+ "(%u read)\n", err);
+ err = -EIO;
+ }
+ goto out;
+ }
+
+ /* Update space and inode usage. Get also other information from
+ * global quota file so that we don't overwrite any changes there.
+ * We are */
+ spin_lock(&dq_data_lock);
+ spacechange = dquot->dq_dqb.dqb_curspace -
+ OCFS2_DQUOT(dquot)->dq_origspace;
+ inodechange = dquot->dq_dqb.dqb_curinodes -
+ OCFS2_DQUOT(dquot)->dq_originodes;
+ olditime = dquot->dq_dqb.dqb_itime;
+ oldbtime = dquot->dq_dqb.dqb_btime;
+ ocfs2_global_disk2memdqb(dquot, &dqblk);
+ mlog(0, "Syncing global dquot %u space %lld+%lld, inodes %lld+%lld\n",
+ dquot->dq_id, dquot->dq_dqb.dqb_curspace, (long long)spacechange,
+ dquot->dq_dqb.dqb_curinodes, (long long)inodechange);
+ if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags))
+ dquot->dq_dqb.dqb_curspace += spacechange;
+ if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags))
+ dquot->dq_dqb.dqb_curinodes += inodechange;
+ /* Set properly space grace time... */
+ if (dquot->dq_dqb.dqb_bsoftlimit &&
+ dquot->dq_dqb.dqb_curspace > dquot->dq_dqb.dqb_bsoftlimit) {
+ if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags) &&
+ oldbtime > 0) {
+ if (dquot->dq_dqb.dqb_btime > 0)
+ dquot->dq_dqb.dqb_btime =
+ min(dquot->dq_dqb.dqb_btime, oldbtime);
+ else
+ dquot->dq_dqb.dqb_btime = oldbtime;
+ }
+ } else {
+ dquot->dq_dqb.dqb_btime = 0;
+ clear_bit(DQ_BLKS_B, &dquot->dq_flags);
+ }
+ /* Set properly inode grace time... */
+ if (dquot->dq_dqb.dqb_isoftlimit &&
+ dquot->dq_dqb.dqb_curinodes > dquot->dq_dqb.dqb_isoftlimit) {
+ if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags) &&
+ olditime > 0) {
+ if (dquot->dq_dqb.dqb_itime > 0)
+ dquot->dq_dqb.dqb_itime =
+ min(dquot->dq_dqb.dqb_itime, olditime);
+ else
+ dquot->dq_dqb.dqb_itime = olditime;
+ }
+ } else {
+ dquot->dq_dqb.dqb_itime = 0;
+ clear_bit(DQ_INODES_B, &dquot->dq_flags);
+ }
+ /* All information is properly updated, clear the flags */
+ __clear_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags);
+ __clear_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags);
+ __clear_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags);
+ __clear_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags);
+ __clear_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags);
+ __clear_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags);
+ OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace;
+ OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes;
+ spin_unlock(&dq_data_lock);
+ err = ocfs2_qinfo_lock(info, freeing);
+ if (err < 0) {
+ mlog(ML_ERROR, "Failed to lock quota info, loosing quota write"
+ " (type=%d, id=%u)\n", dquot->dq_type,
+ (unsigned)dquot->dq_id);
+ goto out;
+ }
+ if (freeing)
+ OCFS2_DQUOT(dquot)->dq_use_count--;
+ err = qtree_write_dquot(&info->dqi_gi, dquot);
+ if (err < 0)
+ goto out_qlock;
+ if (freeing && !OCFS2_DQUOT(dquot)->dq_use_count) {
+ err = qtree_release_dquot(&info->dqi_gi, dquot);
+ if (info_dirty(sb_dqinfo(sb, type))) {
+ err2 = __ocfs2_global_write_info(sb, type);
+ if (!err)
+ err = err2;
+ }
+ }
+out_qlock:
+ ocfs2_qinfo_unlock(info, freeing);
+out:
+ if (err < 0)
+ mlog_errno(err);
+ return err;
+}
+
+/*
+ * Functions for periodic syncing of dquots with global file
+ */
+static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type)
+{
+ handle_t *handle;
+ struct super_block *sb = dquot->dq_sb;
+ struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv;
+ struct ocfs2_super *osb = OCFS2_SB(sb);
+ int status = 0;
+
+ mlog_entry("id=%u qtype=%u type=%lu device=%s\n", dquot->dq_id,
+ dquot->dq_type, type, sb->s_id);
+ if (type != dquot->dq_type)
+ goto out;
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto out;
+
+ handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_ilock;
+ }
+ mutex_lock(&sb_dqopt(sb)->dqio_mutex);
+ status = ocfs2_sync_dquot(dquot);
+ mutex_unlock(&sb_dqopt(sb)->dqio_mutex);
+ if (status < 0)
+ mlog_errno(status);
+ /* We have to write local structure as well... */
+ dquot_mark_dquot_dirty(dquot);
+ status = dquot_commit(dquot);
+ if (status < 0)
+ mlog_errno(status);
+ ocfs2_commit_trans(osb, handle);
+out_ilock:
+ ocfs2_unlock_global_qf(oinfo, 1);
+out:
+ mlog_exit(status);
+ return status;
+}
+
+static void qsync_work_fn(struct work_struct *work)
+{
+ struct ocfs2_mem_dqinfo *oinfo = container_of(work,
+ struct ocfs2_mem_dqinfo,
+ dqi_sync_work.work);
+ struct super_block *sb = oinfo->dqi_gqinode->i_sb;
+
+ dquot_scan_active(sb, ocfs2_sync_dquot_helper, oinfo->dqi_type);
+ queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work,
+ oinfo->dqi_syncjiff);
+}
+
+/*
+ * Wrappers for generic quota functions
+ */
+
+static int ocfs2_write_dquot(struct dquot *dquot)
+{
+ handle_t *handle;
+ struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb);
+ int status = 0;
+
+ mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type);
+
+ handle = ocfs2_start_trans(osb, OCFS2_QWRITE_CREDITS);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out;
+ }
+ status = dquot_commit(dquot);
+ ocfs2_commit_trans(osb, handle);
+out:
+ mlog_exit(status);
+ return status;
+}
+
+int ocfs2_calc_qdel_credits(struct super_block *sb, int type)
+{
+ struct ocfs2_mem_dqinfo *oinfo;
+ int features[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA };
+
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, features[type]))
+ return 0;
+
+ oinfo = sb_dqinfo(sb, type)->dqi_priv;
+ /* We modify tree, leaf block, global info, local chunk header,
+ * global and local inode */
+ return oinfo->dqi_gi.dqi_qtree_depth + 2 + 1 +
+ 2 * OCFS2_INODE_UPDATE_CREDITS;
+}
+
+static int ocfs2_release_dquot(struct dquot *dquot)
+{
+ handle_t *handle;
+ struct ocfs2_mem_dqinfo *oinfo =
+ sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+ struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb);
+ int status = 0;
+
+ mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type);
+
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto out;
+ handle = ocfs2_start_trans(osb,
+ ocfs2_calc_qdel_credits(dquot->dq_sb, dquot->dq_type));
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_ilock;
+ }
+ status = dquot_release(dquot);
+ ocfs2_commit_trans(osb, handle);
+out_ilock:
+ ocfs2_unlock_global_qf(oinfo, 1);
+out:
+ mlog_exit(status);
+ return status;
+}
+
+int ocfs2_calc_qinit_credits(struct super_block *sb, int type)
+{
+ struct ocfs2_mem_dqinfo *oinfo;
+ int features[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA };
+ struct ocfs2_dinode *lfe, *gfe;
+
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, features[type]))
+ return 0;
+
+ oinfo = sb_dqinfo(sb, type)->dqi_priv;
+ gfe = (struct ocfs2_dinode *)oinfo->dqi_gqi_bh->b_data;
+ lfe = (struct ocfs2_dinode *)oinfo->dqi_lqi_bh->b_data;
+ /* We can extend local file + global file. In local file we
+ * can modify info, chunk header block and dquot block. In
+ * global file we can modify info, tree and leaf block */
+ return ocfs2_calc_extend_credits(sb, &lfe->id2.i_list, 0) +
+ ocfs2_calc_extend_credits(sb, &gfe->id2.i_list, 0) +
+ 3 + oinfo->dqi_gi.dqi_qtree_depth + 2;
+}
+
+static int ocfs2_acquire_dquot(struct dquot *dquot)
+{
+ handle_t *handle;
+ struct ocfs2_mem_dqinfo *oinfo =
+ sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+ struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb);
+ int status = 0;
+
+ mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type);
+ /* We need an exclusive lock, because we're going to update use count
+ * and instantiate possibly new dquot structure */
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto out;
+ handle = ocfs2_start_trans(osb,
+ ocfs2_calc_qinit_credits(dquot->dq_sb, dquot->dq_type));
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_ilock;
+ }
+ status = dquot_acquire(dquot);
+ ocfs2_commit_trans(osb, handle);
+out_ilock:
+ ocfs2_unlock_global_qf(oinfo, 1);
+out:
+ mlog_exit(status);
+ return status;
+}
+
+static int ocfs2_mark_dquot_dirty(struct dquot *dquot)
+{
+ unsigned long mask = (1 << (DQ_LASTSET_B + QIF_ILIMITS_B)) |
+ (1 << (DQ_LASTSET_B + QIF_BLIMITS_B)) |
+ (1 << (DQ_LASTSET_B + QIF_INODES_B)) |
+ (1 << (DQ_LASTSET_B + QIF_SPACE_B)) |
+ (1 << (DQ_LASTSET_B + QIF_BTIME_B)) |
+ (1 << (DQ_LASTSET_B + QIF_ITIME_B));
+ int sync = 0;
+ int status;
+ struct super_block *sb = dquot->dq_sb;
+ int type = dquot->dq_type;
+ struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv;
+ handle_t *handle;
+ struct ocfs2_super *osb = OCFS2_SB(sb);
+
+ mlog_entry("id=%u, type=%d", dquot->dq_id, type);
+ dquot_mark_dquot_dirty(dquot);
+
+ /* In case user set some limits, sync dquot immediately to global
+ * quota file so that information propagates quicker */
+ spin_lock(&dq_data_lock);
+ if (dquot->dq_flags & mask)
+ sync = 1;
+ spin_unlock(&dq_data_lock);
+ if (!sync) {
+ status = ocfs2_write_dquot(dquot);
+ goto out;
+ }
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto out;
+ handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_ilock;
+ }
+ status = ocfs2_sync_dquot(dquot);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+ /* Now write updated local dquot structure */
+ status = dquot_commit(dquot);
+out_trans:
+ ocfs2_commit_trans(osb, handle);
+out_ilock:
+ ocfs2_unlock_global_qf(oinfo, 1);
+out:
+ mlog_exit(status);
+ return status;
+}
+
+/* This should happen only after set_dqinfo(). */
+static int ocfs2_write_info(struct super_block *sb, int type)
+{
+ handle_t *handle;
+ int status = 0;
+ struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv;
+
+ mlog_entry_void();
+
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto out;
+ handle = ocfs2_start_trans(OCFS2_SB(sb), OCFS2_QINFO_WRITE_CREDITS);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_ilock;
+ }
+ status = dquot_commit_info(sb, type);
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+out_ilock:
+ ocfs2_unlock_global_qf(oinfo, 1);
+out:
+ mlog_exit(status);
+ return status;
+}
+
+/* This is difficult. We have to lock quota inode and start transaction
+ * in this function but we don't want to take the penalty of exlusive
+ * quota file lock when we are just going to use cached structures. So
+ * we just take read lock check whether we have dquot cached and if so,
+ * we don't have to take the write lock... */
+static int ocfs2_dquot_initialize(struct inode *inode, int type)
+{
+ handle_t *handle = NULL;
+ int status = 0;
+ struct super_block *sb = inode->i_sb;
+ struct ocfs2_mem_dqinfo *oinfo;
+ int exclusive = 0;
+ int cnt;
+ qid_t id;
+
+ mlog_entry_void();
+
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+ if (type != -1 && cnt != type)
+ continue;
+ if (!sb_has_quota_active(sb, cnt))
+ continue;
+ oinfo = sb_dqinfo(sb, cnt)->dqi_priv;
+ status = ocfs2_lock_global_qf(oinfo, 0);
+ if (status < 0)
+ goto out;
+ /* This is just a performance optimization not a reliable test.
+ * Since we hold an inode lock, noone can actually release
+ * the structure until we are finished with initialization. */
+ if (inode->i_dquot[cnt] != NODQUOT) {
+ ocfs2_unlock_global_qf(oinfo, 0);
+ continue;
+ }
+ /* When we have inode lock, we know that no dquot_release() can
+ * run and thus we can safely check whether we need to
+ * read+modify global file to get quota information or whether
+ * our node already has it. */
+ if (cnt == USRQUOTA)
+ id = inode->i_uid;
+ else if (cnt == GRPQUOTA)
+ id = inode->i_gid;
+ else
+ BUG();
+ /* Obtain exclusion from quota off... */
+ down_write(&sb_dqopt(sb)->dqptr_sem);
+ exclusive = !dquot_is_cached(sb, id, cnt);
+ up_write(&sb_dqopt(sb)->dqptr_sem);
+ if (exclusive) {
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0) {
+ exclusive = 0;
+ mlog_errno(status);
+ goto out_ilock;
+ }
+ handle = ocfs2_start_trans(OCFS2_SB(sb),
+ ocfs2_calc_qinit_credits(sb, cnt));
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_ilock;
+ }
+ }
+ dquot_initialize(inode, cnt);
+ if (exclusive) {
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+ ocfs2_unlock_global_qf(oinfo, 1);
+ }
+ ocfs2_unlock_global_qf(oinfo, 0);
+ }
+ mlog_exit(0);
+ return 0;
+out_ilock:
+ if (exclusive)
+ ocfs2_unlock_global_qf(oinfo, 1);
+ ocfs2_unlock_global_qf(oinfo, 0);
+out:
+ mlog_exit(status);
+ return status;
+}
+
+static int ocfs2_dquot_drop_slow(struct inode *inode)
+{
+ int status = 0;
+ int cnt;
+ int got_lock[MAXQUOTAS] = {0, 0};
+ handle_t *handle;
+ struct super_block *sb = inode->i_sb;
+ struct ocfs2_mem_dqinfo *oinfo;
+
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+ if (!sb_has_quota_active(sb, cnt))
+ continue;
+ oinfo = sb_dqinfo(sb, cnt)->dqi_priv;
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto out;
+ got_lock[cnt] = 1;
+ }
+ handle = ocfs2_start_trans(OCFS2_SB(sb),
+ ocfs2_calc_qinit_credits(sb, USRQUOTA) +
+ ocfs2_calc_qinit_credits(sb, GRPQUOTA));
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out;
+ }
+ dquot_drop(inode);
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+out:
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++)
+ if (got_lock[cnt]) {
+ oinfo = sb_dqinfo(sb, cnt)->dqi_priv;
+ ocfs2_unlock_global_qf(oinfo, 1);
+ }
+ return status;
+}
+
+/* See the comment before ocfs2_dquot_initialize. */
+static int ocfs2_dquot_drop(struct inode *inode)
+{
+ int status = 0;
+ struct super_block *sb = inode->i_sb;
+ struct ocfs2_mem_dqinfo *oinfo;
+ int exclusive = 0;
+ int cnt;
+ int got_lock[MAXQUOTAS] = {0, 0};
+
+ mlog_entry_void();
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+ if (!sb_has_quota_active(sb, cnt))
+ continue;
+ oinfo = sb_dqinfo(sb, cnt)->dqi_priv;
+ status = ocfs2_lock_global_qf(oinfo, 0);
+ if (status < 0)
+ goto out;
+ got_lock[cnt] = 1;
+ }
+ /* Lock against anyone releasing references so that when when we check
+ * we know we are not going to be last ones to release dquot */
+ down_write(&sb_dqopt(sb)->dqptr_sem);
+ /* Urgh, this is a terrible hack :( */
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+ if (inode->i_dquot[cnt] != NODQUOT &&
+ atomic_read(&inode->i_dquot[cnt]->dq_count) > 1) {
+ exclusive = 1;
+ break;
+ }
+ }
+ if (!exclusive)
+ dquot_drop_locked(inode);
+ up_write(&sb_dqopt(sb)->dqptr_sem);
+out:
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++)
+ if (got_lock[cnt]) {
+ oinfo = sb_dqinfo(sb, cnt)->dqi_priv;
+ ocfs2_unlock_global_qf(oinfo, 0);
+ }
+ /* In case we bailed out because we had to do expensive locking
+ * do it now... */
+ if (exclusive)
+ status = ocfs2_dquot_drop_slow(inode);
+ mlog_exit(status);
+ return status;
+}
+
+static struct dquot *ocfs2_alloc_dquot(struct super_block *sb, int type)
+{
+ struct ocfs2_dquot *dquot =
+ kmem_cache_zalloc(ocfs2_dquot_cachep, GFP_NOFS);
+
+ if (!dquot)
+ return NULL;
+ return &dquot->dq_dquot;
+}
+
+static void ocfs2_destroy_dquot(struct dquot *dquot)
+{
+ kmem_cache_free(ocfs2_dquot_cachep, dquot);
+}
+
+struct dquot_operations ocfs2_quota_operations = {
+ .initialize = ocfs2_dquot_initialize,
+ .drop = ocfs2_dquot_drop,
+ .alloc_space = dquot_alloc_space,
+ .alloc_inode = dquot_alloc_inode,
+ .free_space = dquot_free_space,
+ .free_inode = dquot_free_inode,
+ .transfer = dquot_transfer,
+ .write_dquot = ocfs2_write_dquot,
+ .acquire_dquot = ocfs2_acquire_dquot,
+ .release_dquot = ocfs2_release_dquot,
+ .mark_dirty = ocfs2_mark_dquot_dirty,
+ .write_info = ocfs2_write_info,
+ .alloc_dquot = ocfs2_alloc_dquot,
+ .destroy_dquot = ocfs2_destroy_dquot,
+};
+
+int ocfs2_quota_setup(void)
+{
+ ocfs2_quota_wq = create_workqueue("o2quot");
+ if (!ocfs2_quota_wq)
+ return -ENOMEM;
+ return 0;
+}
+
+void ocfs2_quota_shutdown(void)
+{
+ if (ocfs2_quota_wq) {
+ flush_workqueue(ocfs2_quota_wq);
+ destroy_workqueue(ocfs2_quota_wq);
+ ocfs2_quota_wq = NULL;
+ }
+}
diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
new file mode 100644
index 00000000000..07deec5e972
--- /dev/null
+++ b/fs/ocfs2/quota_local.c
@@ -0,0 +1,1253 @@
+/*
+ * Implementation of operations over local quota file
+ */
+
+#include <linux/fs.h>
+#include <linux/quota.h>
+#include <linux/quotaops.h>
+#include <linux/module.h>
+
+#define MLOG_MASK_PREFIX ML_QUOTA
+#include <cluster/masklog.h>
+
+#include "ocfs2_fs.h"
+#include "ocfs2.h"
+#include "inode.h"
+#include "alloc.h"
+#include "file.h"
+#include "buffer_head_io.h"
+#include "journal.h"
+#include "sysfile.h"
+#include "dlmglue.h"
+#include "quota.h"
+
+/* Number of local quota structures per block */
+static inline unsigned int ol_quota_entries_per_block(struct super_block *sb)
+{
+ return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) /
+ sizeof(struct ocfs2_local_disk_dqblk));
+}
+
+/* Number of blocks with entries in one chunk */
+static inline unsigned int ol_chunk_blocks(struct super_block *sb)
+{
+ return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) -
+ OCFS2_QBLK_RESERVED_SPACE) << 3) /
+ ol_quota_entries_per_block(sb);
+}
+
+/* Number of entries in a chunk bitmap */
+static unsigned int ol_chunk_entries(struct super_block *sb)
+{
+ return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb);
+}
+
+/* Offset of the chunk in quota file */
+static unsigned int ol_quota_chunk_block(struct super_block *sb, int c)
+{
+ /* 1 block for local quota file info, 1 block per chunk for chunk info */
+ return 1 + (ol_chunk_blocks(sb) + 1) * c;
+}
+
+static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off)
+{
+ int epb = ol_quota_entries_per_block(sb);
+
+ return ol_quota_chunk_block(sb, c) + 1 + off / epb;
+}
+
+static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off)
+{
+ int epb = ol_quota_entries_per_block(sb);
+
+ return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk);
+}
+
+/* Offset of the dquot structure in the quota file */
+static loff_t ol_dqblk_off(struct super_block *sb, int c, int off)
+{
+ return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) +
+ ol_dqblk_block_off(sb, c, off);
+}
+
+/* Compute block number from given offset */
+static inline unsigned int ol_dqblk_file_block(struct super_block *sb, loff_t off)
+{
+ return off >> sb->s_blocksize_bits;
+}
+
+static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off)
+{
+ return off & ((1 << sb->s_blocksize_bits) - 1);
+}
+
+/* Compute offset in the chunk of a structure with the given offset */
+static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off)
+{
+ int epb = ol_quota_entries_per_block(sb);
+
+ return ((off >> sb->s_blocksize_bits) -
+ ol_quota_chunk_block(sb, c) - 1) * epb
+ + ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) /
+ sizeof(struct ocfs2_local_disk_dqblk);
+}
+
+/* Write bufferhead into the fs */
+static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh,
+ void (*modify)(struct buffer_head *, void *), void *private)
+{
+ struct super_block *sb = inode->i_sb;
+ handle_t *handle;
+ int status;
+
+ handle = ocfs2_start_trans(OCFS2_SB(sb), 1);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ return status;
+ }
+ status = ocfs2_journal_access_dq(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ mlog_errno(status);
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+ return status;
+ }
+ lock_buffer(bh);
+ modify(bh, private);
+ unlock_buffer(bh);
+ status = ocfs2_journal_dirty(handle, bh);
+ if (status < 0) {
+ mlog_errno(status);
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+ return status;
+ }
+ status = ocfs2_commit_trans(OCFS2_SB(sb), handle);
+ if (status < 0) {
+ mlog_errno(status);
+ return status;
+ }
+ return 0;
+}
+
+/* Check whether we understand format of quota files */
+static int ocfs2_local_check_quota_file(struct super_block *sb, int type)
+{
+ unsigned int lmagics[MAXQUOTAS] = OCFS2_LOCAL_QMAGICS;
+ unsigned int lversions[MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS;
+ unsigned int gmagics[MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS;
+ unsigned int gversions[MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS;
+ unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE,
+ GROUP_QUOTA_SYSTEM_INODE };
+ struct buffer_head *bh = NULL;
+ struct inode *linode = sb_dqopt(sb)->files[type];
+ struct inode *ginode = NULL;
+ struct ocfs2_disk_dqheader *dqhead;
+ int status, ret = 0;
+
+ /* First check whether we understand local quota file */
+ status = ocfs2_read_quota_block(linode, 0, &bh);
+ if (status) {
+ mlog_errno(status);
+ mlog(ML_ERROR, "failed to read quota file header (type=%d)\n",
+ type);
+ goto out_err;
+ }
+ dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data);
+ if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) {
+ mlog(ML_ERROR, "quota file magic does not match (%u != %u),"
+ " type=%d\n", le32_to_cpu(dqhead->dqh_magic),
+ lmagics[type], type);
+ goto out_err;
+ }
+ if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) {
+ mlog(ML_ERROR, "quota file version does not match (%u != %u),"
+ " type=%d\n", le32_to_cpu(dqhead->dqh_version),
+ lversions[type], type);
+ goto out_err;
+ }
+ brelse(bh);
+ bh = NULL;
+
+ /* Next check whether we understand global quota file */
+ ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type],
+ OCFS2_INVALID_SLOT);
+ if (!ginode) {
+ mlog(ML_ERROR, "cannot get global quota file inode "
+ "(type=%d)\n", type);
+ goto out_err;
+ }
+ /* Since the header is read only, we don't care about locking */
+ status = ocfs2_read_quota_block(ginode, 0, &bh);
+ if (status) {
+ mlog_errno(status);
+ mlog(ML_ERROR, "failed to read global quota file header "
+ "(type=%d)\n", type);
+ goto out_err;
+ }
+ dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data);
+ if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) {
+ mlog(ML_ERROR, "global quota file magic does not match "
+ "(%u != %u), type=%d\n",
+ le32_to_cpu(dqhead->dqh_magic), gmagics[type], type);
+ goto out_err;
+ }
+ if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) {
+ mlog(ML_ERROR, "global quota file version does not match "
+ "(%u != %u), type=%d\n",
+ le32_to_cpu(dqhead->dqh_version), gversions[type],
+ type);
+ goto out_err;
+ }
+
+ ret = 1;
+out_err:
+ brelse(bh);
+ iput(ginode);
+ return ret;
+}
+
+/* Release given list of quota file chunks */
+static void ocfs2_release_local_quota_bitmaps(struct list_head *head)
+{
+ struct ocfs2_quota_chunk *pos, *next;
+
+ list_for_each_entry_safe(pos, next, head, qc_chunk) {
+ list_del(&pos->qc_chunk);
+ brelse(pos->qc_headerbh);
+ kmem_cache_free(ocfs2_qf_chunk_cachep, pos);
+ }
+}
+
+/* Load quota bitmaps into memory */
+static int ocfs2_load_local_quota_bitmaps(struct inode *inode,
+ struct ocfs2_local_disk_dqinfo *ldinfo,
+ struct list_head *head)
+{
+ struct ocfs2_quota_chunk *newchunk;
+ int i, status;
+
+ INIT_LIST_HEAD(head);
+ for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) {
+ newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS);
+ if (!newchunk) {
+ ocfs2_release_local_quota_bitmaps(head);
+ return -ENOMEM;
+ }
+ newchunk->qc_num = i;
+ newchunk->qc_headerbh = NULL;
+ status = ocfs2_read_quota_block(inode,
+ ol_quota_chunk_block(inode->i_sb, i),
+ &newchunk->qc_headerbh);
+ if (status) {
+ mlog_errno(status);
+ kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk);
+ ocfs2_release_local_quota_bitmaps(head);
+ return status;
+ }
+ list_add_tail(&newchunk->qc_chunk, head);
+ }
+ return 0;
+}
+
+static void olq_update_info(struct buffer_head *bh, void *private)
+{
+ struct mem_dqinfo *info = private;
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ struct ocfs2_local_disk_dqinfo *ldinfo;
+
+ ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
+ OCFS2_LOCAL_INFO_OFF);
+ spin_lock(&dq_data_lock);
+ ldinfo->dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK);
+ ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks);
+ ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks);
+ spin_unlock(&dq_data_lock);
+}
+
+static int ocfs2_add_recovery_chunk(struct super_block *sb,
+ struct ocfs2_local_disk_chunk *dchunk,
+ int chunk,
+ struct list_head *head)
+{
+ struct ocfs2_recovery_chunk *rc;
+
+ rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS);
+ if (!rc)
+ return -ENOMEM;
+ rc->rc_chunk = chunk;
+ rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS);
+ if (!rc->rc_bitmap) {
+ kfree(rc);
+ return -ENOMEM;
+ }
+ memcpy(rc->rc_bitmap, dchunk->dqc_bitmap,
+ (ol_chunk_entries(sb) + 7) >> 3);
+ list_add_tail(&rc->rc_list, head);
+ return 0;
+}
+
+static void free_recovery_list(struct list_head *head)
+{
+ struct ocfs2_recovery_chunk *next;
+ struct ocfs2_recovery_chunk *rchunk;
+
+ list_for_each_entry_safe(rchunk, next, head, rc_list) {
+ list_del(&rchunk->rc_list);
+ kfree(rchunk->rc_bitmap);
+ kfree(rchunk);
+ }
+}
+
+void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec)
+{
+ int type;
+
+ for (type = 0; type < MAXQUOTAS; type++)
+ free_recovery_list(&(rec->r_list[type]));
+ kfree(rec);
+}
+
+/* Load entries in our quota file we have to recover*/
+static int ocfs2_recovery_load_quota(struct inode *lqinode,
+ struct ocfs2_local_disk_dqinfo *ldinfo,
+ int type,
+ struct list_head *head)
+{
+ struct super_block *sb = lqinode->i_sb;
+ struct buffer_head *hbh;
+ struct ocfs2_local_disk_chunk *dchunk;
+ int i, chunks = le32_to_cpu(ldinfo->dqi_chunks);
+ int status = 0;
+
+ for (i = 0; i < chunks; i++) {
+ hbh = NULL;
+ status = ocfs2_read_quota_block(lqinode,
+ ol_quota_chunk_block(sb, i),
+ &hbh);
+ if (status) {
+ mlog_errno(status);
+ break;
+ }
+ dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data;
+ if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb))
+ status = ocfs2_add_recovery_chunk(sb, dchunk, i, head);
+ brelse(hbh);
+ if (status < 0)
+ break;
+ }
+ if (status < 0)
+ free_recovery_list(head);
+ return status;
+}
+
+static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void)
+{
+ int type;
+ struct ocfs2_quota_recovery *rec;
+
+ rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS);
+ if (!rec)
+ return NULL;
+ for (type = 0; type < MAXQUOTAS; type++)
+ INIT_LIST_HEAD(&(rec->r_list[type]));
+ return rec;
+}
+
+/* Load information we need for quota recovery into memory */
+struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
+ struct ocfs2_super *osb,
+ int slot_num)
+{
+ unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+ unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
+ LOCAL_GROUP_QUOTA_SYSTEM_INODE };
+ struct super_block *sb = osb->sb;
+ struct ocfs2_local_disk_dqinfo *ldinfo;
+ struct inode *lqinode;
+ struct buffer_head *bh;
+ int type;
+ int status = 0;
+ struct ocfs2_quota_recovery *rec;
+
+ mlog(ML_NOTICE, "Beginning quota recovery in slot %u\n", slot_num);
+ rec = ocfs2_alloc_quota_recovery();
+ if (!rec)
+ return ERR_PTR(-ENOMEM);
+ /* First init... */
+
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
+ continue;
+ /* At this point, journal of the slot is already replayed so
+ * we can trust metadata and data of the quota file */
+ lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num);
+ if (!lqinode) {
+ status = -ENOENT;
+ goto out;
+ }
+ status = ocfs2_inode_lock_full(lqinode, NULL, 1,
+ OCFS2_META_LOCK_RECOVERY);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_put;
+ }
+ /* Now read local header */
+ bh = NULL;
+ status = ocfs2_read_quota_block(lqinode, 0, &bh);
+ if (status) {
+ mlog_errno(status);
+ mlog(ML_ERROR, "failed to read quota file info header "
+ "(slot=%d type=%d)\n", slot_num, type);
+ goto out_lock;
+ }
+ ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
+ OCFS2_LOCAL_INFO_OFF);
+ status = ocfs2_recovery_load_quota(lqinode, ldinfo, type,
+ &rec->r_list[type]);
+ brelse(bh);
+out_lock:
+ ocfs2_inode_unlock(lqinode, 1);
+out_put:
+ iput(lqinode);
+ if (status < 0)
+ break;
+ }
+out:
+ if (status < 0) {
+ ocfs2_free_quota_recovery(rec);
+ rec = ERR_PTR(status);
+ }
+ return rec;
+}
+
+/* Sync changes in local quota file into global quota file and
+ * reinitialize local quota file.
+ * The function expects local quota file to be already locked and
+ * dqonoff_mutex locked. */
+static int ocfs2_recover_local_quota_file(struct inode *lqinode,
+ int type,
+ struct ocfs2_quota_recovery *rec)
+{
+ struct super_block *sb = lqinode->i_sb;
+ struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv;
+ struct ocfs2_local_disk_chunk *dchunk;
+ struct ocfs2_local_disk_dqblk *dqblk;
+ struct dquot *dquot;
+ handle_t *handle;
+ struct buffer_head *hbh = NULL, *qbh = NULL;
+ int status = 0;
+ int bit, chunk;
+ struct ocfs2_recovery_chunk *rchunk, *next;
+ qsize_t spacechange, inodechange;
+
+ mlog_entry("ino=%lu type=%u", (unsigned long)lqinode->i_ino, type);
+
+ status = ocfs2_lock_global_qf(oinfo, 1);
+ if (status < 0)
+ goto out;
+
+ list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) {
+ chunk = rchunk->rc_chunk;
+ hbh = NULL;
+ status = ocfs2_read_quota_block(lqinode,
+ ol_quota_chunk_block(sb, chunk),
+ &hbh);
+ if (status) {
+ mlog_errno(status);
+ break;
+ }
+ dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data;
+ for_each_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) {
+ qbh = NULL;
+ status = ocfs2_read_quota_block(lqinode,
+ ol_dqblk_block(sb, chunk, bit),
+ &qbh);
+ if (status) {
+ mlog_errno(status);
+ break;
+ }
+ dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data +
+ ol_dqblk_block_off(sb, chunk, bit));
+ dquot = dqget(sb, le64_to_cpu(dqblk->dqb_id), type);
+ if (!dquot) {
+ status = -EIO;
+ mlog(ML_ERROR, "Failed to get quota structure "
+ "for id %u, type %d. Cannot finish quota "
+ "file recovery.\n",
+ (unsigned)le64_to_cpu(dqblk->dqb_id),
+ type);
+ goto out_put_bh;
+ }
+ handle = ocfs2_start_trans(OCFS2_SB(sb),
+ OCFS2_QSYNC_CREDITS);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_put_dquot;
+ }
+ mutex_lock(&sb_dqopt(sb)->dqio_mutex);
+ spin_lock(&dq_data_lock);
+ /* Add usage from quota entry into quota changes
+ * of our node. Auxiliary variables are important
+ * due to signedness */
+ spacechange = le64_to_cpu(dqblk->dqb_spacemod);
+ inodechange = le64_to_cpu(dqblk->dqb_inodemod);
+ dquot->dq_dqb.dqb_curspace += spacechange;
+ dquot->dq_dqb.dqb_curinodes += inodechange;
+ spin_unlock(&dq_data_lock);
+ /* We want to drop reference held by the crashed
+ * node. Since we have our own reference we know
+ * global structure actually won't be freed. */
+ status = ocfs2_global_release_dquot(dquot);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_commit;
+ }
+ /* Release local quota file entry */
+ status = ocfs2_journal_access_dq(handle, lqinode,
+ qbh, OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_commit;
+ }
+ lock_buffer(qbh);
+ WARN_ON(!ocfs2_test_bit(bit, dchunk->dqc_bitmap));
+ ocfs2_clear_bit(bit, dchunk->dqc_bitmap);
+ le32_add_cpu(&dchunk->dqc_free, 1);
+ unlock_buffer(qbh);
+ status = ocfs2_journal_dirty(handle, qbh);
+ if (status < 0)
+ mlog_errno(status);
+out_commit:
+ mutex_unlock(&sb_dqopt(sb)->dqio_mutex);
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+out_put_dquot:
+ dqput(dquot);
+out_put_bh:
+ brelse(qbh);
+ if (status < 0)
+ break;
+ }
+ brelse(hbh);
+ list_del(&rchunk->rc_list);
+ kfree(rchunk->rc_bitmap);
+ kfree(rchunk);
+ if (status < 0)
+ break;
+ }
+ ocfs2_unlock_global_qf(oinfo, 1);
+out:
+ if (status < 0)
+ free_recovery_list(&(rec->r_list[type]));
+ mlog_exit(status);
+ return status;
+}
+
+/* Recover local quota files for given node different from us */
+int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
+ struct ocfs2_quota_recovery *rec,
+ int slot_num)
+{
+ unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
+ LOCAL_GROUP_QUOTA_SYSTEM_INODE };
+ struct super_block *sb = osb->sb;
+ struct ocfs2_local_disk_dqinfo *ldinfo;
+ struct buffer_head *bh;
+ handle_t *handle;
+ int type;
+ int status = 0;
+ struct inode *lqinode;
+ unsigned int flags;
+
+ mlog(ML_NOTICE, "Finishing quota recovery in slot %u\n", slot_num);
+ mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (list_empty(&(rec->r_list[type])))
+ continue;
+ mlog(0, "Recovering quota in slot %d\n", slot_num);
+ lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num);
+ if (!lqinode) {
+ status = -ENOENT;
+ goto out;
+ }
+ status = ocfs2_inode_lock_full(lqinode, NULL, 1,
+ OCFS2_META_LOCK_NOQUEUE);
+ /* Someone else is holding the lock? Then he must be
+ * doing the recovery. Just skip the file... */
+ if (status == -EAGAIN) {
+ mlog(ML_NOTICE, "skipping quota recovery for slot %d "
+ "because quota file is locked.\n", slot_num);
+ status = 0;
+ goto out_put;
+ } else if (status < 0) {
+ mlog_errno(status);
+ goto out_put;
+ }
+ /* Now read local header */
+ bh = NULL;
+ status = ocfs2_read_quota_block(lqinode, 0, &bh);
+ if (status) {
+ mlog_errno(status);
+ mlog(ML_ERROR, "failed to read quota file info header "
+ "(slot=%d type=%d)\n", slot_num, type);
+ goto out_lock;
+ }
+ ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
+ OCFS2_LOCAL_INFO_OFF);
+ /* Is recovery still needed? */
+ flags = le32_to_cpu(ldinfo->dqi_flags);
+ if (!(flags & OLQF_CLEAN))
+ status = ocfs2_recover_local_quota_file(lqinode,
+ type,
+ rec);
+ /* We don't want to mark file as clean when it is actually
+ * active */
+ if (slot_num == osb->slot_num)
+ goto out_bh;
+ /* Mark quota file as clean if we are recovering quota file of
+ * some other node. */
+ handle = ocfs2_start_trans(osb, 1);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out_bh;
+ }
+ status = ocfs2_journal_access_dq(handle, lqinode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+ lock_buffer(bh);
+ ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN);
+ unlock_buffer(bh);
+ status = ocfs2_journal_dirty(handle, bh);
+ if (status < 0)
+ mlog_errno(status);
+out_trans:
+ ocfs2_commit_trans(osb, handle);
+out_bh:
+ brelse(bh);
+out_lock:
+ ocfs2_inode_unlock(lqinode, 1);
+out_put:
+ iput(lqinode);
+ if (status < 0)
+ break;
+ }
+out:
+ mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
+ kfree(rec);
+ return status;
+}
+
+/* Read information header from quota file */
+static int ocfs2_local_read_info(struct super_block *sb, int type)
+{
+ struct ocfs2_local_disk_dqinfo *ldinfo;
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo;
+ struct inode *lqinode = sb_dqopt(sb)->files[type];
+ int status;
+ struct buffer_head *bh = NULL;
+ struct ocfs2_quota_recovery *rec;
+ int locked = 0;
+
+ info->dqi_maxblimit = 0x7fffffffffffffffLL;
+ info->dqi_maxilimit = 0x7fffffffffffffffLL;
+ oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS);
+ if (!oinfo) {
+ mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota"
+ " info.");
+ goto out_err;
+ }
+ info->dqi_priv = oinfo;
+ oinfo->dqi_type = type;
+ INIT_LIST_HEAD(&oinfo->dqi_chunk);
+ oinfo->dqi_rec = NULL;
+ oinfo->dqi_lqi_bh = NULL;
+ oinfo->dqi_ibh = NULL;
+
+ status = ocfs2_global_read_info(sb, type);
+ if (status < 0)
+ goto out_err;
+
+ status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_err;
+ }
+ locked = 1;
+
+ /* Now read local header */
+ status = ocfs2_read_quota_block(lqinode, 0, &bh);
+ if (status) {
+ mlog_errno(status);
+ mlog(ML_ERROR, "failed to read quota file info header "
+ "(type=%d)\n", type);
+ goto out_err;
+ }
+ ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
+ OCFS2_LOCAL_INFO_OFF);
+ info->dqi_flags = le32_to_cpu(ldinfo->dqi_flags);
+ oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks);
+ oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks);
+ oinfo->dqi_ibh = bh;
+
+ /* We crashed when using local quota file? */
+ if (!(info->dqi_flags & OLQF_CLEAN)) {
+ rec = OCFS2_SB(sb)->quota_rec;
+ if (!rec) {
+ rec = ocfs2_alloc_quota_recovery();
+ if (!rec) {
+ status = -ENOMEM;
+ mlog_errno(status);
+ goto out_err;
+ }
+ OCFS2_SB(sb)->quota_rec = rec;
+ }
+
+ status = ocfs2_recovery_load_quota(lqinode, ldinfo, type,
+ &rec->r_list[type]);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_err;
+ }
+ }
+
+ status = ocfs2_load_local_quota_bitmaps(lqinode,
+ ldinfo,
+ &oinfo->dqi_chunk);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_err;
+ }
+
+ /* Now mark quota file as used */
+ info->dqi_flags &= ~OLQF_CLEAN;
+ status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_err;
+ }
+
+ return 0;
+out_err:
+ if (oinfo) {
+ iput(oinfo->dqi_gqinode);
+ ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock);
+ ocfs2_lock_res_free(&oinfo->dqi_gqlock);
+ brelse(oinfo->dqi_lqi_bh);
+ if (locked)
+ ocfs2_inode_unlock(lqinode, 1);
+ ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk);
+ kfree(oinfo);
+ }
+ brelse(bh);
+ return -1;
+}
+
+/* Write local info to quota file */
+static int ocfs2_local_write_info(struct super_block *sb, int type)
+{
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv)
+ ->dqi_ibh;
+ int status;
+
+ status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info,
+ info);
+ if (status < 0) {
+ mlog_errno(status);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Release info from memory */
+static int ocfs2_local_free_info(struct super_block *sb, int type)
+{
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ struct ocfs2_quota_chunk *chunk;
+ struct ocfs2_local_disk_chunk *dchunk;
+ int mark_clean = 1, len;
+ int status;
+
+ /* At this point we know there are no more dquots and thus
+ * even if there's some sync in the pdflush queue, it won't
+ * find any dquots and return without doing anything */
+ cancel_delayed_work_sync(&oinfo->dqi_sync_work);
+ iput(oinfo->dqi_gqinode);
+ ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock);
+ ocfs2_lock_res_free(&oinfo->dqi_gqlock);
+ list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) {
+ dchunk = (struct ocfs2_local_disk_chunk *)
+ (chunk->qc_headerbh->b_data);
+ if (chunk->qc_num < oinfo->dqi_chunks - 1) {
+ len = ol_chunk_entries(sb);
+ } else {
+ len = (oinfo->dqi_blocks -
+ ol_quota_chunk_block(sb, chunk->qc_num) - 1)
+ * ol_quota_entries_per_block(sb);
+ }
+ /* Not all entries free? Bug! */
+ if (le32_to_cpu(dchunk->dqc_free) != len) {
+ mlog(ML_ERROR, "releasing quota file with used "
+ "entries (type=%d)\n", type);
+ mark_clean = 0;
+ }
+ }
+ ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk);
+
+ /* dqonoff_mutex protects us against racing with recovery thread... */
+ if (oinfo->dqi_rec) {
+ ocfs2_free_quota_recovery(oinfo->dqi_rec);
+ mark_clean = 0;
+ }
+
+ if (!mark_clean)
+ goto out;
+
+ /* Mark local file as clean */
+ info->dqi_flags |= OLQF_CLEAN;
+ status = ocfs2_modify_bh(sb_dqopt(sb)->files[type],
+ oinfo->dqi_ibh,
+ olq_update_info,
+ info);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+
+out:
+ ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1);
+ brelse(oinfo->dqi_ibh);
+ brelse(oinfo->dqi_lqi_bh);
+ kfree(oinfo);
+ return 0;
+}
+
+static void olq_set_dquot(struct buffer_head *bh, void *private)
+{
+ struct ocfs2_dquot *od = private;
+ struct ocfs2_local_disk_dqblk *dqblk;
+ struct super_block *sb = od->dq_dquot.dq_sb;
+
+ dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data
+ + ol_dqblk_block_offset(sb, od->dq_local_off));
+
+ dqblk->dqb_id = cpu_to_le64(od->dq_dquot.dq_id);
+ spin_lock(&dq_data_lock);
+ dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace -
+ od->dq_origspace);
+ dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes -
+ od->dq_originodes);
+ spin_unlock(&dq_data_lock);
+ mlog(0, "Writing local dquot %u space %lld inodes %lld\n",
+ od->dq_dquot.dq_id, (long long)le64_to_cpu(dqblk->dqb_spacemod),
+ (long long)le64_to_cpu(dqblk->dqb_inodemod));
+}
+
+/* Write dquot to local quota file */
+static int ocfs2_local_write_dquot(struct dquot *dquot)
+{
+ struct super_block *sb = dquot->dq_sb;
+ struct ocfs2_dquot *od = OCFS2_DQUOT(dquot);
+ struct buffer_head *bh = NULL;
+ int status;
+
+ status = ocfs2_read_quota_block(sb_dqopt(sb)->files[dquot->dq_type],
+ ol_dqblk_file_block(sb, od->dq_local_off),
+ &bh);
+ if (status) {
+ mlog_errno(status);
+ goto out;
+ }
+ status = ocfs2_modify_bh(sb_dqopt(sb)->files[dquot->dq_type], bh,
+ olq_set_dquot, od);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+out:
+ brelse(bh);
+ return status;
+}
+
+/* Find free entry in local quota file */
+static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb,
+ int type,
+ int *offset)
+{
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ struct ocfs2_quota_chunk *chunk;
+ struct ocfs2_local_disk_chunk *dchunk;
+ int found = 0, len;
+
+ list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) {
+ dchunk = (struct ocfs2_local_disk_chunk *)
+ chunk->qc_headerbh->b_data;
+ if (le32_to_cpu(dchunk->dqc_free) > 0) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found)
+ return NULL;
+
+ if (chunk->qc_num < oinfo->dqi_chunks - 1) {
+ len = ol_chunk_entries(sb);
+ } else {
+ len = (oinfo->dqi_blocks -
+ ol_quota_chunk_block(sb, chunk->qc_num) - 1)
+ * ol_quota_entries_per_block(sb);
+ }
+
+ found = ocfs2_find_next_zero_bit(dchunk->dqc_bitmap, len, 0);
+ /* We failed? */
+ if (found == len) {
+ mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u"
+ " entries free (type=%d)\n", chunk->qc_num,
+ le32_to_cpu(dchunk->dqc_free), type);
+ return ERR_PTR(-EIO);
+ }
+ *offset = found;
+ return chunk;
+}
+
+/* Add new chunk to the local quota file */
+static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk(
+ struct super_block *sb,
+ int type,
+ int *offset)
+{
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ struct inode *lqinode = sb_dqopt(sb)->files[type];
+ struct ocfs2_quota_chunk *chunk = NULL;
+ struct ocfs2_local_disk_chunk *dchunk;
+ int status;
+ handle_t *handle;
+ struct buffer_head *bh = NULL;
+ u64 p_blkno;
+
+ /* We are protected by dqio_sem so no locking needed */
+ status = ocfs2_extend_no_holes(lqinode,
+ lqinode->i_size + 2 * sb->s_blocksize,
+ lqinode->i_size);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+ status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh,
+ lqinode->i_size + 2 * sb->s_blocksize);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+
+ chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS);
+ if (!chunk) {
+ status = -ENOMEM;
+ mlog_errno(status);
+ goto out;
+ }
+
+ down_read(&OCFS2_I(lqinode)->ip_alloc_sem);
+ status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks,
+ &p_blkno, NULL, NULL);
+ up_read(&OCFS2_I(lqinode)->ip_alloc_sem);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+ bh = sb_getblk(sb, p_blkno);
+ if (!bh) {
+ status = -ENOMEM;
+ mlog_errno(status);
+ goto out;
+ }
+ dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data;
+
+ handle = ocfs2_start_trans(OCFS2_SB(sb), 2);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out;
+ }
+
+ status = ocfs2_journal_access_dq(handle, lqinode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+ lock_buffer(bh);
+ dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb));
+ memset(dchunk->dqc_bitmap, 0,
+ sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) -
+ OCFS2_QBLK_RESERVED_SPACE);
+ set_buffer_uptodate(bh);
+ unlock_buffer(bh);
+ status = ocfs2_journal_dirty(handle, bh);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+
+ oinfo->dqi_blocks += 2;
+ oinfo->dqi_chunks++;
+ status = ocfs2_local_write_info(sb, type);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+ status = ocfs2_commit_trans(OCFS2_SB(sb), handle);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+
+ list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk);
+ chunk->qc_num = list_entry(chunk->qc_chunk.prev,
+ struct ocfs2_quota_chunk,
+ qc_chunk)->qc_num + 1;
+ chunk->qc_headerbh = bh;
+ *offset = 0;
+ return chunk;
+out_trans:
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+out:
+ brelse(bh);
+ kmem_cache_free(ocfs2_qf_chunk_cachep, chunk);
+ return ERR_PTR(status);
+}
+
+/* Find free entry in local quota file */
+static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file(
+ struct super_block *sb,
+ int type,
+ int *offset)
+{
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
+ struct ocfs2_quota_chunk *chunk;
+ struct inode *lqinode = sb_dqopt(sb)->files[type];
+ struct ocfs2_local_disk_chunk *dchunk;
+ int epb = ol_quota_entries_per_block(sb);
+ unsigned int chunk_blocks;
+ int status;
+ handle_t *handle;
+
+ if (list_empty(&oinfo->dqi_chunk))
+ return ocfs2_local_quota_add_chunk(sb, type, offset);
+ /* Is the last chunk full? */
+ chunk = list_entry(oinfo->dqi_chunk.prev,
+ struct ocfs2_quota_chunk, qc_chunk);
+ chunk_blocks = oinfo->dqi_blocks -
+ ol_quota_chunk_block(sb, chunk->qc_num) - 1;
+ if (ol_chunk_blocks(sb) == chunk_blocks)
+ return ocfs2_local_quota_add_chunk(sb, type, offset);
+
+ /* We are protected by dqio_sem so no locking needed */
+ status = ocfs2_extend_no_holes(lqinode,
+ lqinode->i_size + sb->s_blocksize,
+ lqinode->i_size);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+ status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh,
+ lqinode->i_size + sb->s_blocksize);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+ handle = ocfs2_start_trans(OCFS2_SB(sb), 2);
+ if (IS_ERR(handle)) {
+ status = PTR_ERR(handle);
+ mlog_errno(status);
+ goto out;
+ }
+ status = ocfs2_journal_access_dq(handle, lqinode, chunk->qc_headerbh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+
+ dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data;
+ lock_buffer(chunk->qc_headerbh);
+ le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb));
+ unlock_buffer(chunk->qc_headerbh);
+ status = ocfs2_journal_dirty(handle, chunk->qc_headerbh);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+ oinfo->dqi_blocks++;
+ status = ocfs2_local_write_info(sb, type);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_trans;
+ }
+
+ status = ocfs2_commit_trans(OCFS2_SB(sb), handle);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+ *offset = chunk_blocks * epb;
+ return chunk;
+out_trans:
+ ocfs2_commit_trans(OCFS2_SB(sb), handle);
+out:
+ return ERR_PTR(status);
+}
+
+static void olq_alloc_dquot(struct buffer_head *bh, void *private)
+{
+ int *offset = private;
+ struct ocfs2_local_disk_chunk *dchunk;
+
+ dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data;
+ ocfs2_set_bit(*offset, dchunk->dqc_bitmap);
+ le32_add_cpu(&dchunk->dqc_free, -1);
+}
+
+/* Create dquot in the local file for given id */
+static int ocfs2_create_local_dquot(struct dquot *dquot)
+{
+ struct super_block *sb = dquot->dq_sb;
+ int type = dquot->dq_type;
+ struct inode *lqinode = sb_dqopt(sb)->files[type];
+ struct ocfs2_quota_chunk *chunk;
+ struct ocfs2_dquot *od = OCFS2_DQUOT(dquot);
+ int offset;
+ int status;
+
+ chunk = ocfs2_find_free_entry(sb, type, &offset);
+ if (!chunk) {
+ chunk = ocfs2_extend_local_quota_file(sb, type, &offset);
+ if (IS_ERR(chunk))
+ return PTR_ERR(chunk);
+ } else if (IS_ERR(chunk)) {
+ return PTR_ERR(chunk);
+ }
+ od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset);
+ od->dq_chunk = chunk;
+
+ /* Initialize dquot structure on disk */
+ status = ocfs2_local_write_dquot(dquot);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+
+ /* Mark structure as allocated */
+ status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot,
+ &offset);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+out:
+ return status;
+}
+
+/* Create entry in local file for dquot, load data from the global file */
+static int ocfs2_local_read_dquot(struct dquot *dquot)
+{
+ int status;
+
+ mlog_entry("id=%u, type=%d\n", dquot->dq_id, dquot->dq_type);
+
+ status = ocfs2_global_read_dquot(dquot);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_err;
+ }
+
+ /* Now create entry in the local quota file */
+ status = ocfs2_create_local_dquot(dquot);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out_err;
+ }
+ mlog_exit(0);
+ return 0;
+out_err:
+ mlog_exit(status);
+ return status;
+}
+
+/* Release dquot structure from local quota file. ocfs2_release_dquot() has
+ * already started a transaction and obtained exclusive lock for global
+ * quota file. */
+static int ocfs2_local_release_dquot(struct dquot *dquot)
+{
+ int status;
+ int type = dquot->dq_type;
+ struct ocfs2_dquot *od = OCFS2_DQUOT(dquot);
+ struct super_block *sb = dquot->dq_sb;
+ struct ocfs2_local_disk_chunk *dchunk;
+ int offset;
+ handle_t *handle = journal_current_handle();
+
+ BUG_ON(!handle);
+ /* First write all local changes to global file */
+ status = ocfs2_global_release_dquot(dquot);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+
+ status = ocfs2_journal_access_dq(handle, sb_dqopt(sb)->files[type],
+ od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+ offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num,
+ od->dq_local_off);
+ dchunk = (struct ocfs2_local_disk_chunk *)
+ (od->dq_chunk->qc_headerbh->b_data);
+ /* Mark structure as freed */
+ lock_buffer(od->dq_chunk->qc_headerbh);
+ ocfs2_clear_bit(offset, dchunk->dqc_bitmap);
+ le32_add_cpu(&dchunk->dqc_free, 1);
+ unlock_buffer(od->dq_chunk->qc_headerbh);
+ status = ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh);
+ if (status < 0) {
+ mlog_errno(status);
+ goto out;
+ }
+ status = 0;
+out:
+ /* Clear the read bit so that next time someone uses this
+ * dquot he reads fresh info from disk and allocates local
+ * dquot structure */
+ clear_bit(DQ_READ_B, &dquot->dq_flags);
+ return status;
+}
+
+static struct quota_format_ops ocfs2_format_ops = {
+ .check_quota_file = ocfs2_local_check_quota_file,
+ .read_file_info = ocfs2_local_read_info,
+ .write_file_info = ocfs2_global_write_info,
+ .free_file_info = ocfs2_local_free_info,
+ .read_dqblk = ocfs2_local_read_dquot,
+ .commit_dqblk = ocfs2_local_write_dquot,
+ .release_dqblk = ocfs2_local_release_dquot,
+};
+
+struct quota_format_type ocfs2_quota_format = {
+ .qf_fmt_id = QFMT_OCFS2,
+ .qf_ops = &ocfs2_format_ops,
+ .qf_owner = THIS_MODULE
+};
diff --git a/fs/ocfs2/resize.c b/fs/ocfs2/resize.c
index ffd48db229a..424adaa5f90 100644
--- a/fs/ocfs2/resize.c
+++ b/fs/ocfs2/resize.c
@@ -106,8 +106,8 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
mlog_entry("(new_clusters=%d, first_new_cluster = %u)\n",
new_clusters, first_new_cluster);
- ret = ocfs2_journal_access(handle, bm_inode, group_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_gd(handle, bm_inode, group_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -141,8 +141,8 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle,
}
/* update the inode accordingly. */
- ret = ocfs2_journal_access(handle, bm_inode, bm_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, bm_inode, bm_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_rollback;
@@ -314,6 +314,10 @@ int ocfs2_group_extend(struct inode * inode, int new_clusters)
fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
+ /* main_bm_bh is validated by inode read inside ocfs2_inode_lock(),
+ * so any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
+
if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
ocfs2_group_bitmap_size(osb->sb) * 8) {
mlog(ML_ERROR, "The disk is too old and small. "
@@ -322,30 +326,18 @@ int ocfs2_group_extend(struct inode * inode, int new_clusters)
goto out_unlock;
}
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(main_bm_inode->i_sb, fe);
- ret = -EIO;
- goto out_unlock;
- }
-
first_new_cluster = le32_to_cpu(fe->i_clusters);
lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
first_new_cluster - 1);
- ret = ocfs2_read_block(main_bm_inode, lgd_blkno, &group_bh);
+ ret = ocfs2_read_group_descriptor(main_bm_inode, fe, lgd_blkno,
+ &group_bh);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
-
group = (struct ocfs2_group_desc *)group_bh->b_data;
- ret = ocfs2_check_group_descriptor(inode->i_sb, fe, group);
- if (ret) {
- mlog_errno(ret);
- goto out_unlock;
- }
-
cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters >
le16_to_cpu(fe->id2.i_chain.cl_cpg)) {
@@ -398,41 +390,16 @@ static int ocfs2_check_new_group(struct inode *inode,
struct buffer_head *group_bh)
{
int ret;
- struct ocfs2_group_desc *gd;
+ struct ocfs2_group_desc *gd =
+ (struct ocfs2_group_desc *)group_bh->b_data;
u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc);
- unsigned int max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) *
- le16_to_cpu(di->id2.i_chain.cl_bpc);
-
- gd = (struct ocfs2_group_desc *)group_bh->b_data;
+ ret = ocfs2_check_group_descriptor(inode->i_sb, di, group_bh);
+ if (ret)
+ goto out;
- ret = -EIO;
- if (!OCFS2_IS_VALID_GROUP_DESC(gd))
- mlog(ML_ERROR, "Group descriptor # %llu isn't valid.\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno));
- else if (di->i_blkno != gd->bg_parent_dinode)
- mlog(ML_ERROR, "Group descriptor # %llu has bad parent "
- "pointer (%llu, expected %llu)\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- (unsigned long long)le64_to_cpu(gd->bg_parent_dinode),
- (unsigned long long)le64_to_cpu(di->i_blkno));
- else if (le16_to_cpu(gd->bg_bits) > max_bits)
- mlog(ML_ERROR, "Group descriptor # %llu has bit count of %u\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits));
- else if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits))
- mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
- "claims that %u are free\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits),
- le16_to_cpu(gd->bg_free_bits_count));
- else if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size)))
- mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
- "max bitmap bits of %u\n",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits),
- 8 * le16_to_cpu(gd->bg_size));
- else if (le16_to_cpu(gd->bg_chain) != input->chain)
+ ret = -EINVAL;
+ if (le16_to_cpu(gd->bg_chain) != input->chain)
mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u "
"while input has %u set.\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
@@ -451,6 +418,7 @@ static int ocfs2_check_new_group(struct inode *inode,
else
ret = 0;
+out:
return ret;
}
@@ -568,8 +536,8 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
cl = &fe->id2.i_chain;
cr = &cl->cl_recs[input->chain];
- ret = ocfs2_journal_access(handle, main_bm_inode, group_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_gd(handle, main_bm_inode, group_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_commit;
@@ -584,8 +552,8 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
goto out_commit;
}
- ret = ocfs2_journal_access(handle, main_bm_inode, main_bm_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, main_bm_inode, main_bm_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_commit;
diff --git a/fs/ocfs2/slot_map.c b/fs/ocfs2/slot_map.c
index bdda2d8f850..40661e7824e 100644
--- a/fs/ocfs2/slot_map.c
+++ b/fs/ocfs2/slot_map.c
@@ -151,7 +151,7 @@ int ocfs2_refresh_slot_info(struct ocfs2_super *osb)
* this is not true, the read of -1 (UINT64_MAX) will fail.
*/
ret = ocfs2_read_blocks(si->si_inode, -1, si->si_blocks, si->si_bh,
- OCFS2_BH_IGNORE_CACHE);
+ OCFS2_BH_IGNORE_CACHE, NULL);
if (ret == 0) {
spin_lock(&osb->osb_lock);
ocfs2_update_slot_info(si);
@@ -405,7 +405,7 @@ static int ocfs2_map_slot_buffers(struct ocfs2_super *osb,
bh = NULL; /* Acquire a fresh bh */
status = ocfs2_read_blocks(si->si_inode, blkno, 1, &bh,
- OCFS2_BH_IGNORE_CACHE);
+ OCFS2_BH_IGNORE_CACHE, NULL);
if (status < 0) {
mlog_errno(status);
goto bail;
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index c5ff18b46b5..a69628603e1 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -35,6 +35,7 @@
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "inode.h"
#include "journal.h"
@@ -145,62 +146,183 @@ static u32 ocfs2_bits_per_group(struct ocfs2_chain_list *cl)
return (u32)le16_to_cpu(cl->cl_cpg) * (u32)le16_to_cpu(cl->cl_bpc);
}
-/* somewhat more expensive than our other checks, so use sparingly. */
-int ocfs2_check_group_descriptor(struct super_block *sb,
- struct ocfs2_dinode *di,
- struct ocfs2_group_desc *gd)
+#define do_error(fmt, ...) \
+ do{ \
+ if (clean_error) \
+ mlog(ML_ERROR, fmt "\n", ##__VA_ARGS__); \
+ else \
+ ocfs2_error(sb, fmt, ##__VA_ARGS__); \
+ } while (0)
+
+static int ocfs2_validate_gd_self(struct super_block *sb,
+ struct buffer_head *bh,
+ int clean_error)
{
- unsigned int max_bits;
+ struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data;
if (!OCFS2_IS_VALID_GROUP_DESC(gd)) {
- OCFS2_RO_ON_INVALID_GROUP_DESC(sb, gd);
- return -EIO;
+ do_error("Group descriptor #%llu has bad signature %.*s",
+ (unsigned long long)bh->b_blocknr, 7,
+ gd->bg_signature);
+ return -EINVAL;
}
+ if (le64_to_cpu(gd->bg_blkno) != bh->b_blocknr) {
+ do_error("Group descriptor #%llu has an invalid bg_blkno "
+ "of %llu",
+ (unsigned long long)bh->b_blocknr,
+ (unsigned long long)le64_to_cpu(gd->bg_blkno));
+ return -EINVAL;
+ }
+
+ if (le32_to_cpu(gd->bg_generation) != OCFS2_SB(sb)->fs_generation) {
+ do_error("Group descriptor #%llu has an invalid "
+ "fs_generation of #%u",
+ (unsigned long long)bh->b_blocknr,
+ le32_to_cpu(gd->bg_generation));
+ return -EINVAL;
+ }
+
+ if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits)) {
+ do_error("Group descriptor #%llu has bit count %u but "
+ "claims that %u are free",
+ (unsigned long long)bh->b_blocknr,
+ le16_to_cpu(gd->bg_bits),
+ le16_to_cpu(gd->bg_free_bits_count));
+ return -EINVAL;
+ }
+
+ if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size))) {
+ do_error("Group descriptor #%llu has bit count %u but "
+ "max bitmap bits of %u",
+ (unsigned long long)bh->b_blocknr,
+ le16_to_cpu(gd->bg_bits),
+ 8 * le16_to_cpu(gd->bg_size));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ocfs2_validate_gd_parent(struct super_block *sb,
+ struct ocfs2_dinode *di,
+ struct buffer_head *bh,
+ int clean_error)
+{
+ unsigned int max_bits;
+ struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data;
+
if (di->i_blkno != gd->bg_parent_dinode) {
- ocfs2_error(sb, "Group descriptor # %llu has bad parent "
- "pointer (%llu, expected %llu)",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- (unsigned long long)le64_to_cpu(gd->bg_parent_dinode),
- (unsigned long long)le64_to_cpu(di->i_blkno));
- return -EIO;
+ do_error("Group descriptor #%llu has bad parent "
+ "pointer (%llu, expected %llu)",
+ (unsigned long long)bh->b_blocknr,
+ (unsigned long long)le64_to_cpu(gd->bg_parent_dinode),
+ (unsigned long long)le64_to_cpu(di->i_blkno));
+ return -EINVAL;
}
max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) * le16_to_cpu(di->id2.i_chain.cl_bpc);
if (le16_to_cpu(gd->bg_bits) > max_bits) {
- ocfs2_error(sb, "Group descriptor # %llu has bit count of %u",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits));
- return -EIO;
+ do_error("Group descriptor #%llu has bit count of %u",
+ (unsigned long long)bh->b_blocknr,
+ le16_to_cpu(gd->bg_bits));
+ return -EINVAL;
}
if (le16_to_cpu(gd->bg_chain) >=
le16_to_cpu(di->id2.i_chain.cl_next_free_rec)) {
- ocfs2_error(sb, "Group descriptor # %llu has bad chain %u",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_chain));
- return -EIO;
+ do_error("Group descriptor #%llu has bad chain %u",
+ (unsigned long long)bh->b_blocknr,
+ le16_to_cpu(gd->bg_chain));
+ return -EINVAL;
}
- if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits)) {
- ocfs2_error(sb, "Group descriptor # %llu has bit count %u but "
- "claims that %u are free",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits),
- le16_to_cpu(gd->bg_free_bits_count));
- return -EIO;
- }
+ return 0;
+}
- if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size))) {
- ocfs2_error(sb, "Group descriptor # %llu has bit count %u but "
- "max bitmap bits of %u",
- (unsigned long long)le64_to_cpu(gd->bg_blkno),
- le16_to_cpu(gd->bg_bits),
- 8 * le16_to_cpu(gd->bg_size));
- return -EIO;
+#undef do_error
+
+/*
+ * This version only prints errors. It does not fail the filesystem, and
+ * exists only for resize.
+ */
+int ocfs2_check_group_descriptor(struct super_block *sb,
+ struct ocfs2_dinode *di,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data;
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &gd->bg_check);
+ if (rc) {
+ mlog(ML_ERROR,
+ "Checksum failed for group descriptor %llu\n",
+ (unsigned long long)bh->b_blocknr);
+ } else
+ rc = ocfs2_validate_gd_self(sb, bh, 1);
+ if (!rc)
+ rc = ocfs2_validate_gd_parent(sb, di, bh, 1);
+
+ return rc;
+}
+
+static int ocfs2_validate_group_descriptor(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data;
+
+ mlog(0, "Validating group descriptor %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &gd->bg_check);
+ if (rc)
+ return rc;
+
+ /*
+ * Errors after here are fatal.
+ */
+
+ return ocfs2_validate_gd_self(sb, bh, 0);
+}
+
+int ocfs2_read_group_descriptor(struct inode *inode, struct ocfs2_dinode *di,
+ u64 gd_blkno, struct buffer_head **bh)
+{
+ int rc;
+ struct buffer_head *tmp = *bh;
+
+ rc = ocfs2_read_block(inode, gd_blkno, &tmp,
+ ocfs2_validate_group_descriptor);
+ if (rc)
+ goto out;
+
+ rc = ocfs2_validate_gd_parent(inode->i_sb, di, tmp, 0);
+ if (rc) {
+ brelse(tmp);
+ goto out;
}
- return 0;
+ /* If ocfs2_read_block() got us a new bh, pass it up. */
+ if (!*bh)
+ *bh = tmp;
+
+out:
+ return rc;
}
static int ocfs2_block_group_fill(handle_t *handle,
@@ -225,10 +347,10 @@ static int ocfs2_block_group_fill(handle_t *handle,
goto bail;
}
- status = ocfs2_journal_access(handle,
- alloc_inode,
- bg_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_gd(handle,
+ alloc_inode,
+ bg_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -358,8 +480,8 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
bg = (struct ocfs2_group_desc *) bg_bh->b_data;
- status = ocfs2_journal_access(handle, alloc_inode,
- bh, OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, alloc_inode,
+ bh, OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -441,11 +563,11 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
ac->ac_alloc_slot = slot;
fe = (struct ocfs2_dinode *) bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe);
- status = -EIO;
- goto bail;
- }
+
+ /* The bh was validated by the inode read inside
+ * ocfs2_inode_lock(). Any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
+
if (!(fe->i_flags & cpu_to_le32(OCFS2_CHAIN_FL))) {
ocfs2_error(alloc_inode->i_sb, "Invalid chain allocator %llu",
(unsigned long long)le64_to_cpu(fe->i_blkno));
@@ -790,10 +912,9 @@ static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb,
int offset, start, found, status = 0;
struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data;
- if (!OCFS2_IS_VALID_GROUP_DESC(bg)) {
- OCFS2_RO_ON_INVALID_GROUP_DESC(osb->sb, bg);
- return -EIO;
- }
+ /* Callers got this descriptor from
+ * ocfs2_read_group_descriptor(). Any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg));
found = start = best_offset = best_size = 0;
bitmap = bg->bg_bitmap;
@@ -858,11 +979,9 @@ static inline int ocfs2_block_group_set_bits(handle_t *handle,
mlog_entry_void();
- if (!OCFS2_IS_VALID_GROUP_DESC(bg)) {
- OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, bg);
- status = -EIO;
- goto bail;
- }
+ /* All callers get the descriptor via
+ * ocfs2_read_group_descriptor(). Any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg));
BUG_ON(le16_to_cpu(bg->bg_free_bits_count) < num_bits);
mlog(0, "block_group_set_bits: off = %u, num = %u\n", bit_off,
@@ -871,10 +990,10 @@ static inline int ocfs2_block_group_set_bits(handle_t *handle,
if (ocfs2_is_cluster_bitmap(alloc_inode))
journal_type = OCFS2_JOURNAL_ACCESS_UNDO;
- status = ocfs2_journal_access(handle,
- alloc_inode,
- group_bh,
- journal_type);
+ status = ocfs2_journal_access_gd(handle,
+ alloc_inode,
+ group_bh,
+ journal_type);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -931,21 +1050,10 @@ static int ocfs2_relink_block_group(handle_t *handle,
struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data;
struct ocfs2_group_desc *prev_bg = (struct ocfs2_group_desc *) prev_bg_bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe);
- status = -EIO;
- goto out;
- }
- if (!OCFS2_IS_VALID_GROUP_DESC(bg)) {
- OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, bg);
- status = -EIO;
- goto out;
- }
- if (!OCFS2_IS_VALID_GROUP_DESC(prev_bg)) {
- OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, prev_bg);
- status = -EIO;
- goto out;
- }
+ /* The caller got these descriptors from
+ * ocfs2_read_group_descriptor(). Any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg));
+ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(prev_bg));
mlog(0, "Suballoc %llu, chain %u, move group %llu to top, prev = %llu\n",
(unsigned long long)le64_to_cpu(fe->i_blkno), chain,
@@ -956,8 +1064,8 @@ static int ocfs2_relink_block_group(handle_t *handle,
bg_ptr = le64_to_cpu(bg->bg_next_group);
prev_bg_ptr = le64_to_cpu(prev_bg->bg_next_group);
- status = ocfs2_journal_access(handle, alloc_inode, prev_bg_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_gd(handle, alloc_inode, prev_bg_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto out_rollback;
@@ -971,8 +1079,8 @@ static int ocfs2_relink_block_group(handle_t *handle,
goto out_rollback;
}
- status = ocfs2_journal_access(handle, alloc_inode, bg_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_gd(handle, alloc_inode, bg_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto out_rollback;
@@ -986,8 +1094,8 @@ static int ocfs2_relink_block_group(handle_t *handle,
goto out_rollback;
}
- status = ocfs2_journal_access(handle, alloc_inode, fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, alloc_inode, fe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto out_rollback;
@@ -1008,7 +1116,7 @@ out_rollback:
bg->bg_next_group = cpu_to_le64(bg_ptr);
prev_bg->bg_next_group = cpu_to_le64(prev_bg_ptr);
}
-out:
+
mlog_exit(status);
return status;
}
@@ -1138,8 +1246,8 @@ static int ocfs2_alloc_dinode_update_counts(struct inode *inode,
struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
struct ocfs2_chain_list *cl = (struct ocfs2_chain_list *) &di->id2.i_chain;
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -1170,21 +1278,17 @@ static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
u16 found;
struct buffer_head *group_bh = NULL;
struct ocfs2_group_desc *gd;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)ac->ac_bh->b_data;
struct inode *alloc_inode = ac->ac_inode;
- ret = ocfs2_read_block(alloc_inode, gd_blkno, &group_bh);
+ ret = ocfs2_read_group_descriptor(alloc_inode, di, gd_blkno,
+ &group_bh);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
gd = (struct ocfs2_group_desc *) group_bh->b_data;
- if (!OCFS2_IS_VALID_GROUP_DESC(gd)) {
- OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, gd);
- ret = -EIO;
- goto out;
- }
-
ret = ac->ac_group_search(alloc_inode, group_bh, bits_wanted, min_bits,
ac->ac_max_block, bit_off, &found);
if (ret < 0) {
@@ -1241,19 +1345,14 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
bits_wanted, chain,
(unsigned long long)OCFS2_I(alloc_inode)->ip_blkno);
- status = ocfs2_read_block(alloc_inode,
- le64_to_cpu(cl->cl_recs[chain].c_blkno),
- &group_bh);
+ status = ocfs2_read_group_descriptor(alloc_inode, fe,
+ le64_to_cpu(cl->cl_recs[chain].c_blkno),
+ &group_bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
bg = (struct ocfs2_group_desc *) group_bh->b_data;
- status = ocfs2_check_group_descriptor(alloc_inode->i_sb, fe, bg);
- if (status) {
- mlog_errno(status);
- goto bail;
- }
status = -ENOSPC;
/* for now, the chain search is a bit simplistic. We just use
@@ -1271,18 +1370,13 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
next_group = le64_to_cpu(bg->bg_next_group);
prev_group_bh = group_bh;
group_bh = NULL;
- status = ocfs2_read_block(alloc_inode,
- next_group, &group_bh);
+ status = ocfs2_read_group_descriptor(alloc_inode, fe,
+ next_group, &group_bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
bg = (struct ocfs2_group_desc *) group_bh->b_data;
- status = ocfs2_check_group_descriptor(alloc_inode->i_sb, fe, bg);
- if (status) {
- mlog_errno(status);
- goto bail;
- }
}
if (status < 0) {
if (status != -ENOSPC)
@@ -1324,10 +1418,10 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
/* Ok, claim our bits now: set the info on dinode, chainlist
* and then the group */
- status = ocfs2_journal_access(handle,
- alloc_inode,
- ac->ac_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle,
+ alloc_inode,
+ ac->ac_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1392,11 +1486,11 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
BUG_ON(!ac->ac_bh);
fe = (struct ocfs2_dinode *) ac->ac_bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(osb->sb, fe);
- status = -EIO;
- goto bail;
- }
+
+ /* The bh was validated by the inode read during
+ * ocfs2_reserve_suballoc_bits(). Any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
+
if (le32_to_cpu(fe->id1.bitmap1.i_used) >=
le32_to_cpu(fe->id1.bitmap1.i_total)) {
ocfs2_error(osb->sb, "Chain allocator dinode %llu has %u used "
@@ -1725,19 +1819,17 @@ static inline int ocfs2_block_group_clear_bits(handle_t *handle,
mlog_entry_void();
- if (!OCFS2_IS_VALID_GROUP_DESC(bg)) {
- OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, bg);
- status = -EIO;
- goto bail;
- }
+ /* The caller got this descriptor from
+ * ocfs2_read_group_descriptor(). Any corruption is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg));
mlog(0, "off = %u, num = %u\n", bit_off, num_bits);
if (ocfs2_is_cluster_bitmap(alloc_inode))
journal_type = OCFS2_JOURNAL_ACCESS_UNDO;
- status = ocfs2_journal_access(handle, alloc_inode, group_bh,
- journal_type);
+ status = ocfs2_journal_access_gd(handle, alloc_inode, group_bh,
+ journal_type);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1782,29 +1874,26 @@ int ocfs2_free_suballoc_bits(handle_t *handle,
mlog_entry_void();
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe);
- status = -EIO;
- goto bail;
- }
+ /* The alloc_bh comes from ocfs2_free_dinode() or
+ * ocfs2_free_clusters(). The callers have all locked the
+ * allocator and gotten alloc_bh from the lock call. This
+ * validates the dinode buffer. Any corruption that has happended
+ * is a code bug. */
+ BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
BUG_ON((count + start_bit) > ocfs2_bits_per_group(cl));
mlog(0, "%llu: freeing %u bits from group %llu, starting at %u\n",
(unsigned long long)OCFS2_I(alloc_inode)->ip_blkno, count,
(unsigned long long)bg_blkno, start_bit);
- status = ocfs2_read_block(alloc_inode, bg_blkno, &group_bh);
+ status = ocfs2_read_group_descriptor(alloc_inode, fe, bg_blkno,
+ &group_bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
-
group = (struct ocfs2_group_desc *) group_bh->b_data;
- status = ocfs2_check_group_descriptor(alloc_inode->i_sb, fe, group);
- if (status) {
- mlog_errno(status);
- goto bail;
- }
+
BUG_ON((count + start_bit) > le16_to_cpu(group->bg_bits));
status = ocfs2_block_group_clear_bits(handle, alloc_inode,
@@ -1815,8 +1904,8 @@ int ocfs2_free_suballoc_bits(handle_t *handle,
goto bail;
}
- status = ocfs2_journal_access(handle, alloc_inode, alloc_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, alloc_inode, alloc_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h
index 4df159d8f45..e3c13c77f9e 100644
--- a/fs/ocfs2/suballoc.h
+++ b/fs/ocfs2/suballoc.h
@@ -164,10 +164,24 @@ void ocfs2_free_ac_resource(struct ocfs2_alloc_context *ac);
* and return that block offset. */
u64 ocfs2_which_cluster_group(struct inode *inode, u32 cluster);
-/* somewhat more expensive than our other checks, so use sparingly. */
+/*
+ * By default, ocfs2_read_group_descriptor() calls ocfs2_error() when it
+ * finds a problem. A caller that wants to check a group descriptor
+ * without going readonly should read the block with ocfs2_read_block[s]()
+ * and then checking it with this function. This is only resize, really.
+ * Everyone else should be using ocfs2_read_group_descriptor().
+ */
int ocfs2_check_group_descriptor(struct super_block *sb,
struct ocfs2_dinode *di,
- struct ocfs2_group_desc *gd);
+ struct buffer_head *bh);
+/*
+ * Read a group descriptor block into *bh. If *bh is NULL, a bh will be
+ * allocated. This is a cached read. The descriptor will be validated with
+ * ocfs2_validate_group_descriptor().
+ */
+int ocfs2_read_group_descriptor(struct inode *inode, struct ocfs2_dinode *di,
+ u64 gd_blkno, struct buffer_head **bh);
+
int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_extent_tree *et,
u32 clusters_to_add, u32 extents_to_split,
struct ocfs2_alloc_context **data_ac,
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 304b63ac78c..43ed11345b5 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -41,6 +41,7 @@
#include <linux/debugfs.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_SUPER
#include <cluster/masklog.h>
@@ -51,6 +52,7 @@
#include "ocfs1_fs_compat.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "export.h"
#include "extent_map.h"
@@ -65,10 +67,13 @@
#include "uptodate.h"
#include "ver.h"
#include "xattr.h"
+#include "quota.h"
#include "buffer_head_io.h"
static struct kmem_cache *ocfs2_inode_cachep = NULL;
+struct kmem_cache *ocfs2_dquot_cachep;
+struct kmem_cache *ocfs2_qf_chunk_cachep;
/* OCFS2 needs to schedule several differnt types of work which
* require cluster locking, disk I/O, recovery waits, etc. Since these
@@ -124,6 +129,9 @@ static int ocfs2_get_sector(struct super_block *sb,
static void ocfs2_write_super(struct super_block *sb);
static struct inode *ocfs2_alloc_inode(struct super_block *sb);
static void ocfs2_destroy_inode(struct inode *inode);
+static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
+static int ocfs2_enable_quotas(struct ocfs2_super *osb);
+static void ocfs2_disable_quotas(struct ocfs2_super *osb);
static const struct super_operations ocfs2_sops = {
.statfs = ocfs2_statfs,
@@ -137,6 +145,8 @@ static const struct super_operations ocfs2_sops = {
.put_super = ocfs2_put_super,
.remount_fs = ocfs2_remount,
.show_options = ocfs2_show_options,
+ .quota_read = ocfs2_quota_read,
+ .quota_write = ocfs2_quota_write,
};
enum {
@@ -158,6 +168,10 @@ enum {
Opt_user_xattr,
Opt_nouser_xattr,
Opt_inode64,
+ Opt_acl,
+ Opt_noacl,
+ Opt_usrquota,
+ Opt_grpquota,
Opt_err,
};
@@ -180,6 +194,10 @@ static const match_table_t tokens = {
{Opt_user_xattr, "user_xattr"},
{Opt_nouser_xattr, "nouser_xattr"},
{Opt_inode64, "inode64"},
+ {Opt_acl, "acl"},
+ {Opt_noacl, "noacl"},
+ {Opt_usrquota, "usrquota"},
+ {Opt_grpquota, "grpquota"},
{Opt_err, NULL}
};
@@ -221,6 +239,19 @@ static int ocfs2_sync_fs(struct super_block *sb, int wait)
return 0;
}
+static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
+{
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
+ && (ino == USER_QUOTA_SYSTEM_INODE
+ || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
+ return 0;
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
+ && (ino == GROUP_QUOTA_SYSTEM_INODE
+ || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
+ return 0;
+ return 1;
+}
+
static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
{
struct inode *new = NULL;
@@ -247,6 +278,8 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
+ if (!ocfs2_need_system_inode(osb, i))
+ continue;
new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
if (!new) {
ocfs2_release_system_inodes(osb);
@@ -277,6 +310,8 @@ static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
i < NUM_SYSTEM_INODES;
i++) {
+ if (!ocfs2_need_system_inode(osb, i))
+ continue;
new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
if (!new) {
ocfs2_release_system_inodes(osb);
@@ -426,6 +461,12 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
/* We're going to/from readonly mode. */
if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
+ /* Disable quota accounting before remounting RO */
+ if (*flags & MS_RDONLY) {
+ ret = ocfs2_susp_quotas(osb, 0);
+ if (ret < 0)
+ goto out;
+ }
/* Lock here so the check of HARD_RO and the potential
* setting of SOFT_RO is atomic. */
spin_lock(&osb->osb_lock);
@@ -461,11 +502,28 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
}
unlock_osb:
spin_unlock(&osb->osb_lock);
+ /* Enable quota accounting after remounting RW */
+ if (!ret && !(*flags & MS_RDONLY)) {
+ if (sb_any_quota_suspended(sb))
+ ret = ocfs2_susp_quotas(osb, 1);
+ else
+ ret = ocfs2_enable_quotas(osb);
+ if (ret < 0) {
+ /* Return back changes... */
+ spin_lock(&osb->osb_lock);
+ sb->s_flags |= MS_RDONLY;
+ osb->osb_flags |= OCFS2_OSB_SOFT_RO;
+ spin_unlock(&osb->osb_lock);
+ goto out;
+ }
+ }
}
if (!ret) {
/* Only save off the new mount options in case of a successful
* remount. */
+ if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))
+ parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
osb->s_mount_opt = parsed_options.mount_opt;
osb->s_atime_quantum = parsed_options.atime_quantum;
osb->preferred_slot = parsed_options.slot;
@@ -619,6 +677,131 @@ static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
return 0;
}
+static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
+{
+ int type;
+ struct super_block *sb = osb->sb;
+ unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+ int status = 0;
+
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
+ continue;
+ if (unsuspend)
+ status = vfs_quota_enable(
+ sb_dqopt(sb)->files[type],
+ type, QFMT_OCFS2,
+ DQUOT_SUSPENDED);
+ else
+ status = vfs_quota_disable(sb, type,
+ DQUOT_SUSPENDED);
+ if (status < 0)
+ break;
+ }
+ if (status < 0)
+ mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
+ "remount (error = %d).\n", status);
+ return status;
+}
+
+static int ocfs2_enable_quotas(struct ocfs2_super *osb)
+{
+ struct inode *inode[MAXQUOTAS] = { NULL, NULL };
+ struct super_block *sb = osb->sb;
+ unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+ unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
+ LOCAL_GROUP_QUOTA_SYSTEM_INODE };
+ int status;
+ int type;
+
+ sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
+ continue;
+ inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
+ osb->slot_num);
+ if (!inode[type]) {
+ status = -ENOENT;
+ goto out_quota_off;
+ }
+ status = vfs_quota_enable(inode[type], type, QFMT_OCFS2,
+ DQUOT_USAGE_ENABLED);
+ if (status < 0)
+ goto out_quota_off;
+ }
+
+ for (type = 0; type < MAXQUOTAS; type++)
+ iput(inode[type]);
+ return 0;
+out_quota_off:
+ ocfs2_disable_quotas(osb);
+ for (type = 0; type < MAXQUOTAS; type++)
+ iput(inode[type]);
+ mlog_errno(status);
+ return status;
+}
+
+static void ocfs2_disable_quotas(struct ocfs2_super *osb)
+{
+ int type;
+ struct inode *inode;
+ struct super_block *sb = osb->sb;
+
+ /* We mostly ignore errors in this function because there's not much
+ * we can do when we see them */
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (!sb_has_quota_loaded(sb, type))
+ continue;
+ inode = igrab(sb->s_dquot.files[type]);
+ /* Turn off quotas. This will remove all dquot structures from
+ * memory and so they will be automatically synced to global
+ * quota files */
+ vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED |
+ DQUOT_LIMITS_ENABLED);
+ if (!inode)
+ continue;
+ iput(inode);
+ }
+}
+
+/* Handle quota on quotactl */
+static int ocfs2_quota_on(struct super_block *sb, int type, int format_id,
+ char *path, int remount)
+{
+ unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
+ return -EINVAL;
+
+ if (remount)
+ return 0; /* Just ignore it has been handled in
+ * ocfs2_remount() */
+ return vfs_quota_enable(sb_dqopt(sb)->files[type], type,
+ format_id, DQUOT_LIMITS_ENABLED);
+}
+
+/* Handle quota off quotactl */
+static int ocfs2_quota_off(struct super_block *sb, int type, int remount)
+{
+ if (remount)
+ return 0; /* Ignore now and handle later in
+ * ocfs2_remount() */
+ return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED);
+}
+
+static struct quotactl_ops ocfs2_quotactl_ops = {
+ .quota_on = ocfs2_quota_on,
+ .quota_off = ocfs2_quota_off,
+ .quota_sync = vfs_quota_sync,
+ .get_info = vfs_get_dqinfo,
+ .set_info = vfs_set_dqinfo,
+ .get_dqblk = vfs_get_dqblk,
+ .set_dqblk = vfs_set_dqblk,
+};
+
static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
{
struct dentry *root;
@@ -651,12 +834,32 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
}
brelse(bh);
bh = NULL;
+
+ if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))
+ parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
+
osb->s_mount_opt = parsed_options.mount_opt;
osb->s_atime_quantum = parsed_options.atime_quantum;
osb->preferred_slot = parsed_options.slot;
osb->osb_commit_interval = parsed_options.commit_interval;
osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt);
osb->local_alloc_bits = osb->local_alloc_default_bits;
+ if (osb->s_mount_opt & OCFS2_MOUNT_USRQUOTA &&
+ !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
+ status = -EINVAL;
+ mlog(ML_ERROR, "User quotas were requested, but this "
+ "filesystem does not have the feature enabled.\n");
+ goto read_super_error;
+ }
+ if (osb->s_mount_opt & OCFS2_MOUNT_GRPQUOTA &&
+ !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
+ status = -EINVAL;
+ mlog(ML_ERROR, "Group quotas were requested, but this "
+ "filesystem does not have the feature enabled.\n");
+ goto read_super_error;
+ }
status = ocfs2_verify_userspace_stack(osb, &parsed_options);
if (status)
@@ -664,6 +867,9 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
sb->s_magic = OCFS2_SUPER_MAGIC;
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+
/* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
* heartbeat=none */
if (bdev_read_only(sb->s_bdev)) {
@@ -758,6 +964,28 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
atomic_set(&osb->vol_state, VOLUME_MOUNTED);
wake_up(&osb->osb_mount_event);
+ /* Now we can initialize quotas because we can afford to wait
+ * for cluster locks recovery now. That also means that truncation
+ * log recovery can happen but that waits for proper quota setup */
+ if (!(sb->s_flags & MS_RDONLY)) {
+ status = ocfs2_enable_quotas(osb);
+ if (status < 0) {
+ /* We have to err-out specially here because
+ * s_root is already set */
+ mlog_errno(status);
+ atomic_set(&osb->vol_state, VOLUME_DISABLED);
+ wake_up(&osb->osb_mount_event);
+ mlog_exit(status);
+ return status;
+ }
+ }
+
+ ocfs2_complete_quota_recovery(osb);
+
+ /* Now we wake up again for processes waiting for quotas */
+ atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
+ wake_up(&osb->osb_mount_event);
+
mlog_exit(status);
return status;
@@ -945,6 +1173,41 @@ static int ocfs2_parse_options(struct super_block *sb,
case Opt_inode64:
mopt->mount_opt |= OCFS2_MOUNT_INODE64;
break;
+ case Opt_usrquota:
+ /* We check only on remount, otherwise features
+ * aren't yet initialized. */
+ if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
+ mlog(ML_ERROR, "User quota requested but "
+ "filesystem feature is not set\n");
+ status = 0;
+ goto bail;
+ }
+ mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
+ break;
+ case Opt_grpquota:
+ if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
+ mlog(ML_ERROR, "Group quota requested but "
+ "filesystem feature is not set\n");
+ status = 0;
+ goto bail;
+ }
+ mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
+ break;
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ case Opt_acl:
+ mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
+ break;
+ case Opt_noacl:
+ mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
+ break;
+#else
+ case Opt_acl:
+ case Opt_noacl:
+ printk(KERN_INFO "ocfs2 (no)acl options not supported\n");
+ break;
+#endif
default:
mlog(ML_ERROR,
"Unrecognized mount option \"%s\" "
@@ -1008,6 +1271,10 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
if (osb->osb_cluster_stack[0])
seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN,
osb->osb_cluster_stack);
+ if (opts & OCFS2_MOUNT_USRQUOTA)
+ seq_printf(s, ",usrquota");
+ if (opts & OCFS2_MOUNT_GRPQUOTA)
+ seq_printf(s, ",grpquota");
if (opts & OCFS2_MOUNT_NOUSERXATTR)
seq_printf(s, ",nouser_xattr");
@@ -1017,6 +1284,13 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
if (opts & OCFS2_MOUNT_INODE64)
seq_printf(s, ",inode64");
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ if (opts & OCFS2_MOUNT_POSIX_ACL)
+ seq_printf(s, ",acl");
+ else
+ seq_printf(s, ",noacl");
+#endif
+
return 0;
}
@@ -1052,10 +1326,16 @@ static int __init ocfs2_init(void)
mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
}
+ status = ocfs2_quota_setup();
+ if (status)
+ goto leave;
+
ocfs2_set_locking_protocol();
+ status = register_quota_format(&ocfs2_quota_format);
leave:
if (status < 0) {
+ ocfs2_quota_shutdown();
ocfs2_free_mem_caches();
exit_ocfs2_uptodate_cache();
}
@@ -1072,11 +1352,15 @@ static void __exit ocfs2_exit(void)
{
mlog_entry_void();
+ ocfs2_quota_shutdown();
+
if (ocfs2_wq) {
flush_workqueue(ocfs2_wq);
destroy_workqueue(ocfs2_wq);
}
+ unregister_quota_format(&ocfs2_quota_format);
+
debugfs_remove(ocfs2_debugfs_root);
ocfs2_free_mem_caches();
@@ -1192,8 +1476,27 @@ static int ocfs2_initialize_mem_caches(void)
(SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD),
ocfs2_inode_init_once);
- if (!ocfs2_inode_cachep)
+ ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
+ sizeof(struct ocfs2_dquot),
+ 0,
+ (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
+ NULL);
+ ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
+ sizeof(struct ocfs2_quota_chunk),
+ 0,
+ (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
+ NULL);
+ if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
+ !ocfs2_qf_chunk_cachep) {
+ if (ocfs2_inode_cachep)
+ kmem_cache_destroy(ocfs2_inode_cachep);
+ if (ocfs2_dquot_cachep)
+ kmem_cache_destroy(ocfs2_dquot_cachep);
+ if (ocfs2_qf_chunk_cachep)
+ kmem_cache_destroy(ocfs2_qf_chunk_cachep);
return -ENOMEM;
+ }
return 0;
}
@@ -1202,8 +1505,15 @@ static void ocfs2_free_mem_caches(void)
{
if (ocfs2_inode_cachep)
kmem_cache_destroy(ocfs2_inode_cachep);
-
ocfs2_inode_cachep = NULL;
+
+ if (ocfs2_dquot_cachep)
+ kmem_cache_destroy(ocfs2_dquot_cachep);
+ ocfs2_dquot_cachep = NULL;
+
+ if (ocfs2_qf_chunk_cachep)
+ kmem_cache_destroy(ocfs2_qf_chunk_cachep);
+ ocfs2_qf_chunk_cachep = NULL;
}
static int ocfs2_get_sector(struct super_block *sb,
@@ -1303,6 +1613,8 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
osb = OCFS2_SB(sb);
BUG_ON(!osb);
+ ocfs2_disable_quotas(osb);
+
ocfs2_shutdown_local_alloc(osb);
ocfs2_truncate_log_shutdown(osb);
@@ -1413,6 +1725,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
sb->s_fs_info = osb;
sb->s_op = &ocfs2_sops;
sb->s_export_op = &ocfs2_export_ops;
+ sb->s_qcop = &ocfs2_quotactl_ops;
+ sb->dq_op = &ocfs2_quota_operations;
sb->s_xattr = ocfs2_xattr_handlers;
sb->s_time_gran = 1;
sb->s_flags |= MS_NOATIME;
@@ -1676,6 +1990,15 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
+ /* We have to do a raw check of the feature here */
+ if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
+ OCFS2_FEATURE_INCOMPAT_META_ECC) {
+ status = ocfs2_block_check_validate(bh->b_data,
+ bh->b_size,
+ &di->i_check);
+ if (status)
+ goto out;
+ }
status = -EINVAL;
if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
mlog(ML_ERROR, "found superblock with incorrect block "
@@ -1717,6 +2040,7 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
}
}
+out:
mlog_exit(status);
return status;
}
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index cbd03dfdc7b..ed0a0cfd68d 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -84,7 +84,7 @@ static char *ocfs2_fast_symlink_getlink(struct inode *inode,
mlog_entry_void();
- status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, bh);
+ status = ocfs2_read_inode_block(inode, bh);
if (status < 0) {
mlog_errno(status);
link = ERR_PTR(status);
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 74d7367ade1..e1d638af6ac 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -35,12 +35,14 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
+#include <linux/security.h>
#define MLOG_MASK_PREFIX ML_XATTR
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "file.h"
#include "symlink.h"
@@ -61,12 +63,32 @@ struct ocfs2_xattr_def_value_root {
};
struct ocfs2_xattr_bucket {
- struct buffer_head *bhs[OCFS2_XATTR_MAX_BLOCKS_PER_BUCKET];
- struct ocfs2_xattr_header *xh;
+ /* The inode these xattrs are associated with */
+ struct inode *bu_inode;
+
+ /* The actual buffers that make up the bucket */
+ struct buffer_head *bu_bhs[OCFS2_XATTR_MAX_BLOCKS_PER_BUCKET];
+
+ /* How many blocks make up one bucket for this filesystem */
+ int bu_blocks;
+};
+
+struct ocfs2_xattr_set_ctxt {
+ handle_t *handle;
+ struct ocfs2_alloc_context *meta_ac;
+ struct ocfs2_alloc_context *data_ac;
+ struct ocfs2_cached_dealloc_ctxt dealloc;
};
#define OCFS2_XATTR_ROOT_SIZE (sizeof(struct ocfs2_xattr_def_value_root))
#define OCFS2_XATTR_INLINE_SIZE 80
+#define OCFS2_XATTR_FREE_IN_IBODY (OCFS2_MIN_XATTR_INLINE_SIZE \
+ - sizeof(struct ocfs2_xattr_header) \
+ - sizeof(__u32))
+#define OCFS2_XATTR_FREE_IN_BLOCK(ptr) ((ptr)->i_sb->s_blocksize \
+ - sizeof(struct ocfs2_xattr_block) \
+ - sizeof(struct ocfs2_xattr_header) \
+ - sizeof(__u32))
static struct ocfs2_xattr_def_value_root def_xv = {
.xv.xr_list.l_count = cpu_to_le16(1),
@@ -74,13 +96,25 @@ static struct ocfs2_xattr_def_value_root def_xv = {
struct xattr_handler *ocfs2_xattr_handlers[] = {
&ocfs2_xattr_user_handler,
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ &ocfs2_xattr_acl_access_handler,
+ &ocfs2_xattr_acl_default_handler,
+#endif
&ocfs2_xattr_trusted_handler,
+ &ocfs2_xattr_security_handler,
NULL
};
static struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {
[OCFS2_XATTR_INDEX_USER] = &ocfs2_xattr_user_handler,
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ [OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS]
+ = &ocfs2_xattr_acl_access_handler,
+ [OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT]
+ = &ocfs2_xattr_acl_default_handler,
+#endif
[OCFS2_XATTR_INDEX_TRUSTED] = &ocfs2_xattr_trusted_handler,
+ [OCFS2_XATTR_INDEX_SECURITY] = &ocfs2_xattr_security_handler,
};
struct ocfs2_xattr_info {
@@ -98,7 +132,7 @@ struct ocfs2_xattr_search {
*/
struct buffer_head *xattr_bh;
struct ocfs2_xattr_header *header;
- struct ocfs2_xattr_bucket bucket;
+ struct ocfs2_xattr_bucket *bucket;
void *base;
void *end;
struct ocfs2_xattr_entry *here;
@@ -127,14 +161,20 @@ static int ocfs2_xattr_tree_list_index_block(struct inode *inode,
size_t buffer_size);
static int ocfs2_xattr_create_index_block(struct inode *inode,
- struct ocfs2_xattr_search *xs);
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt);
static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs);
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt);
static int ocfs2_delete_xattr_index_block(struct inode *inode,
struct buffer_head *xb_bh);
+static int ocfs2_mv_xattr_buckets(struct inode *inode, handle_t *handle,
+ u64 src_blk, u64 last_blk, u64 to_blk,
+ unsigned int start_bucket,
+ u32 *first_hash);
static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
{
@@ -154,6 +194,216 @@ static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
return len / sizeof(struct ocfs2_xattr_entry);
}
+#define bucket_blkno(_b) ((_b)->bu_bhs[0]->b_blocknr)
+#define bucket_block(_b, _n) ((_b)->bu_bhs[(_n)]->b_data)
+#define bucket_xh(_b) ((struct ocfs2_xattr_header *)bucket_block((_b), 0))
+
+static struct ocfs2_xattr_bucket *ocfs2_xattr_bucket_new(struct inode *inode)
+{
+ struct ocfs2_xattr_bucket *bucket;
+ int blks = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+
+ BUG_ON(blks > OCFS2_XATTR_MAX_BLOCKS_PER_BUCKET);
+
+ bucket = kzalloc(sizeof(struct ocfs2_xattr_bucket), GFP_NOFS);
+ if (bucket) {
+ bucket->bu_inode = inode;
+ bucket->bu_blocks = blks;
+ }
+
+ return bucket;
+}
+
+static void ocfs2_xattr_bucket_relse(struct ocfs2_xattr_bucket *bucket)
+{
+ int i;
+
+ for (i = 0; i < bucket->bu_blocks; i++) {
+ brelse(bucket->bu_bhs[i]);
+ bucket->bu_bhs[i] = NULL;
+ }
+}
+
+static void ocfs2_xattr_bucket_free(struct ocfs2_xattr_bucket *bucket)
+{
+ if (bucket) {
+ ocfs2_xattr_bucket_relse(bucket);
+ bucket->bu_inode = NULL;
+ kfree(bucket);
+ }
+}
+
+/*
+ * A bucket that has never been written to disk doesn't need to be
+ * read. We just need the buffer_heads. Don't call this for
+ * buckets that are already on disk. ocfs2_read_xattr_bucket() initializes
+ * them fully.
+ */
+static int ocfs2_init_xattr_bucket(struct ocfs2_xattr_bucket *bucket,
+ u64 xb_blkno)
+{
+ int i, rc = 0;
+
+ for (i = 0; i < bucket->bu_blocks; i++) {
+ bucket->bu_bhs[i] = sb_getblk(bucket->bu_inode->i_sb,
+ xb_blkno + i);
+ if (!bucket->bu_bhs[i]) {
+ rc = -EIO;
+ mlog_errno(rc);
+ break;
+ }
+
+ if (!ocfs2_buffer_uptodate(bucket->bu_inode,
+ bucket->bu_bhs[i]))
+ ocfs2_set_new_buffer_uptodate(bucket->bu_inode,
+ bucket->bu_bhs[i]);
+ }
+
+ if (rc)
+ ocfs2_xattr_bucket_relse(bucket);
+ return rc;
+}
+
+/* Read the xattr bucket at xb_blkno */
+static int ocfs2_read_xattr_bucket(struct ocfs2_xattr_bucket *bucket,
+ u64 xb_blkno)
+{
+ int rc;
+
+ rc = ocfs2_read_blocks(bucket->bu_inode, xb_blkno,
+ bucket->bu_blocks, bucket->bu_bhs, 0,
+ NULL);
+ if (!rc) {
+ rc = ocfs2_validate_meta_ecc_bhs(bucket->bu_inode->i_sb,
+ bucket->bu_bhs,
+ bucket->bu_blocks,
+ &bucket_xh(bucket)->xh_check);
+ if (rc)
+ mlog_errno(rc);
+ }
+
+ if (rc)
+ ocfs2_xattr_bucket_relse(bucket);
+ return rc;
+}
+
+static int ocfs2_xattr_bucket_journal_access(handle_t *handle,
+ struct ocfs2_xattr_bucket *bucket,
+ int type)
+{
+ int i, rc = 0;
+
+ for (i = 0; i < bucket->bu_blocks; i++) {
+ rc = ocfs2_journal_access(handle, bucket->bu_inode,
+ bucket->bu_bhs[i], type);
+ if (rc) {
+ mlog_errno(rc);
+ break;
+ }
+ }
+
+ return rc;
+}
+
+static void ocfs2_xattr_bucket_journal_dirty(handle_t *handle,
+ struct ocfs2_xattr_bucket *bucket)
+{
+ int i;
+
+ ocfs2_compute_meta_ecc_bhs(bucket->bu_inode->i_sb,
+ bucket->bu_bhs, bucket->bu_blocks,
+ &bucket_xh(bucket)->xh_check);
+
+ for (i = 0; i < bucket->bu_blocks; i++)
+ ocfs2_journal_dirty(handle, bucket->bu_bhs[i]);
+}
+
+static void ocfs2_xattr_bucket_copy_data(struct ocfs2_xattr_bucket *dest,
+ struct ocfs2_xattr_bucket *src)
+{
+ int i;
+ int blocksize = src->bu_inode->i_sb->s_blocksize;
+
+ BUG_ON(dest->bu_blocks != src->bu_blocks);
+ BUG_ON(dest->bu_inode != src->bu_inode);
+
+ for (i = 0; i < src->bu_blocks; i++) {
+ memcpy(bucket_block(dest, i), bucket_block(src, i),
+ blocksize);
+ }
+}
+
+static int ocfs2_validate_xattr_block(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_xattr_block *xb =
+ (struct ocfs2_xattr_block *)bh->b_data;
+
+ mlog(0, "Validating xattr block %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &xb->xb_check);
+ if (rc)
+ return rc;
+
+ /*
+ * Errors after here are fatal
+ */
+
+ if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
+ ocfs2_error(sb,
+ "Extended attribute block #%llu has bad "
+ "signature %.*s",
+ (unsigned long long)bh->b_blocknr, 7,
+ xb->xb_signature);
+ return -EINVAL;
+ }
+
+ if (le64_to_cpu(xb->xb_blkno) != bh->b_blocknr) {
+ ocfs2_error(sb,
+ "Extended attribute block #%llu has an "
+ "invalid xb_blkno of %llu",
+ (unsigned long long)bh->b_blocknr,
+ (unsigned long long)le64_to_cpu(xb->xb_blkno));
+ return -EINVAL;
+ }
+
+ if (le32_to_cpu(xb->xb_fs_generation) != OCFS2_SB(sb)->fs_generation) {
+ ocfs2_error(sb,
+ "Extended attribute block #%llu has an invalid "
+ "xb_fs_generation of #%u",
+ (unsigned long long)bh->b_blocknr,
+ le32_to_cpu(xb->xb_fs_generation));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ocfs2_read_xattr_block(struct inode *inode, u64 xb_blkno,
+ struct buffer_head **bh)
+{
+ int rc;
+ struct buffer_head *tmp = *bh;
+
+ rc = ocfs2_read_block(inode, xb_blkno, &tmp,
+ ocfs2_validate_xattr_block);
+
+ /* If ocfs2_read_block() got us a new bh, pass it up. */
+ if (!rc && !*bh)
+ *bh = tmp;
+
+ return rc;
+}
+
static inline const char *ocfs2_xattr_prefix(int name_index)
{
struct xattr_handler *handler = NULL;
@@ -200,54 +450,163 @@ static void ocfs2_xattr_hash_entry(struct inode *inode,
return;
}
+static int ocfs2_xattr_entry_real_size(int name_len, size_t value_len)
+{
+ int size = 0;
+
+ if (value_len <= OCFS2_XATTR_INLINE_SIZE)
+ size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_SIZE(value_len);
+ else
+ size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
+ size += sizeof(struct ocfs2_xattr_entry);
+
+ return size;
+}
+
+int ocfs2_calc_security_init(struct inode *dir,
+ struct ocfs2_security_xattr_info *si,
+ int *want_clusters,
+ int *xattr_credits,
+ struct ocfs2_alloc_context **xattr_ac)
+{
+ int ret = 0;
+ struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+ int s_size = ocfs2_xattr_entry_real_size(strlen(si->name),
+ si->value_len);
+
+ /*
+ * The max space of security xattr taken inline is
+ * 256(name) + 80(value) + 16(entry) = 352 bytes,
+ * So reserve one metadata block for it is ok.
+ */
+ if (dir->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE ||
+ s_size > OCFS2_XATTR_FREE_IN_IBODY) {
+ ret = ocfs2_reserve_new_metadata_blocks(osb, 1, xattr_ac);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+ *xattr_credits += OCFS2_XATTR_BLOCK_CREATE_CREDITS;
+ }
+
+ /* reserve clusters for xattr value which will be set in B tree*/
+ if (si->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ int new_clusters = ocfs2_clusters_for_bytes(dir->i_sb,
+ si->value_len);
+
+ *xattr_credits += ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+ return ret;
+}
+
+int ocfs2_calc_xattr_init(struct inode *dir,
+ struct buffer_head *dir_bh,
+ int mode,
+ struct ocfs2_security_xattr_info *si,
+ int *want_clusters,
+ int *xattr_credits,
+ struct ocfs2_alloc_context **xattr_ac)
+{
+ int ret = 0;
+ struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+ int s_size = 0, a_size = 0, acl_len = 0, new_clusters;
+
+ if (si->enable)
+ s_size = ocfs2_xattr_entry_real_size(strlen(si->name),
+ si->value_len);
+
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
+ acl_len = ocfs2_xattr_get_nolock(dir, dir_bh,
+ OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
+ "", NULL, 0);
+ if (acl_len > 0) {
+ a_size = ocfs2_xattr_entry_real_size(0, acl_len);
+ if (S_ISDIR(mode))
+ a_size <<= 1;
+ } else if (acl_len != 0 && acl_len != -ENODATA) {
+ mlog_errno(ret);
+ return ret;
+ }
+ }
+
+ if (!(s_size + a_size))
+ return ret;
+
+ /*
+ * The max space of security xattr taken inline is
+ * 256(name) + 80(value) + 16(entry) = 352 bytes,
+ * The max space of acl xattr taken inline is
+ * 80(value) + 16(entry) * 2(if directory) = 192 bytes,
+ * when blocksize = 512, may reserve one more cluser for
+ * xattr bucket, otherwise reserve one metadata block
+ * for them is ok.
+ */
+ if (dir->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE ||
+ (s_size + a_size) > OCFS2_XATTR_FREE_IN_IBODY) {
+ ret = ocfs2_reserve_new_metadata_blocks(osb, 1, xattr_ac);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+ *xattr_credits += OCFS2_XATTR_BLOCK_CREATE_CREDITS;
+ }
+
+ if (dir->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE &&
+ (s_size + a_size) > OCFS2_XATTR_FREE_IN_BLOCK(dir)) {
+ *want_clusters += 1;
+ *xattr_credits += ocfs2_blocks_per_xattr_bucket(dir->i_sb);
+ }
+
+ /*
+ * reserve credits and clusters for xattrs which has large value
+ * and have to be set outside
+ */
+ if (si->enable && si->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ new_clusters = ocfs2_clusters_for_bytes(dir->i_sb,
+ si->value_len);
+ *xattr_credits += ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL &&
+ acl_len > OCFS2_XATTR_INLINE_SIZE) {
+ /* for directory, it has DEFAULT and ACCESS two types of acls */
+ new_clusters = (S_ISDIR(mode) ? 2 : 1) *
+ ocfs2_clusters_for_bytes(dir->i_sb, acl_len);
+ *xattr_credits += ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+
+ return ret;
+}
+
static int ocfs2_xattr_extend_allocation(struct inode *inode,
u32 clusters_to_add,
- struct buffer_head *xattr_bh,
- struct ocfs2_xattr_value_root *xv)
+ struct ocfs2_xattr_value_buf *vb,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
int status = 0;
- int restart_func = 0;
- int credits = 0;
- handle_t *handle = NULL;
- struct ocfs2_alloc_context *data_ac = NULL;
- struct ocfs2_alloc_context *meta_ac = NULL;
+ handle_t *handle = ctxt->handle;
enum ocfs2_alloc_restarted why;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- u32 prev_clusters, logical_start = le32_to_cpu(xv->xr_clusters);
+ u32 prev_clusters, logical_start = le32_to_cpu(vb->vb_xv->xr_clusters);
struct ocfs2_extent_tree et;
mlog(0, "(clusters_to_add for xattr= %u)\n", clusters_to_add);
- ocfs2_init_xattr_value_extent_tree(&et, inode, xattr_bh, xv);
-
-restart_all:
-
- status = ocfs2_lock_allocators(inode, &et, clusters_to_add, 0,
- &data_ac, &meta_ac);
- if (status) {
- mlog_errno(status);
- goto leave;
- }
-
- credits = ocfs2_calc_extend_credits(osb->sb, et.et_root_el,
- clusters_to_add);
- handle = ocfs2_start_trans(osb, credits);
- if (IS_ERR(handle)) {
- status = PTR_ERR(handle);
- handle = NULL;
- mlog_errno(status);
- goto leave;
- }
+ ocfs2_init_xattr_value_extent_tree(&et, inode, vb);
-restarted_transaction:
- status = ocfs2_journal_access(handle, inode, xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
}
- prev_clusters = le32_to_cpu(xv->xr_clusters);
+ prev_clusters = le32_to_cpu(vb->vb_xv->xr_clusters);
status = ocfs2_add_clusters_in_btree(osb,
inode,
&logical_start,
@@ -255,157 +614,84 @@ restarted_transaction:
0,
&et,
handle,
- data_ac,
- meta_ac,
+ ctxt->data_ac,
+ ctxt->meta_ac,
&why);
- if ((status < 0) && (status != -EAGAIN)) {
- if (status != -ENOSPC)
- mlog_errno(status);
+ if (status < 0) {
+ mlog_errno(status);
goto leave;
}
- status = ocfs2_journal_dirty(handle, xattr_bh);
+ status = ocfs2_journal_dirty(handle, vb->vb_bh);
if (status < 0) {
mlog_errno(status);
goto leave;
}
- clusters_to_add -= le32_to_cpu(xv->xr_clusters) - prev_clusters;
+ clusters_to_add -= le32_to_cpu(vb->vb_xv->xr_clusters) - prev_clusters;
- if (why != RESTART_NONE && clusters_to_add) {
- if (why == RESTART_META) {
- mlog(0, "restarting function.\n");
- restart_func = 1;
- } else {
- BUG_ON(why != RESTART_TRANS);
-
- mlog(0, "restarting transaction.\n");
- /* TODO: This can be more intelligent. */
- credits = ocfs2_calc_extend_credits(osb->sb,
- et.et_root_el,
- clusters_to_add);
- status = ocfs2_extend_trans(handle, credits);
- if (status < 0) {
- /* handle still has to be committed at
- * this point. */
- status = -ENOMEM;
- mlog_errno(status);
- goto leave;
- }
- goto restarted_transaction;
- }
- }
+ /*
+ * We should have already allocated enough space before the transaction,
+ * so no need to restart.
+ */
+ BUG_ON(why != RESTART_NONE || clusters_to_add);
leave:
- if (handle) {
- ocfs2_commit_trans(osb, handle);
- handle = NULL;
- }
- if (data_ac) {
- ocfs2_free_alloc_context(data_ac);
- data_ac = NULL;
- }
- if (meta_ac) {
- ocfs2_free_alloc_context(meta_ac);
- meta_ac = NULL;
- }
- if ((!status) && restart_func) {
- restart_func = 0;
- goto restart_all;
- }
return status;
}
static int __ocfs2_remove_xattr_range(struct inode *inode,
- struct buffer_head *root_bh,
- struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_xattr_value_buf *vb,
u32 cpos, u32 phys_cpos, u32 len,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret;
u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct inode *tl_inode = osb->osb_tl_inode;
- handle_t *handle;
- struct ocfs2_alloc_context *meta_ac = NULL;
+ handle_t *handle = ctxt->handle;
struct ocfs2_extent_tree et;
- ocfs2_init_xattr_value_extent_tree(&et, inode, root_bh, xv);
+ ocfs2_init_xattr_value_extent_tree(&et, inode, vb);
- ret = ocfs2_lock_allocators(inode, &et, 0, 1, NULL, &meta_ac);
+ ret = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- return ret;
- }
-
- mutex_lock(&tl_inode->i_mutex);
-
- if (ocfs2_truncate_log_needs_flush(osb)) {
- ret = __ocfs2_flush_truncate_log(osb);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
- }
-
- handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- ret = ocfs2_remove_extent(inode, &et, cpos, len, handle, meta_ac,
- dealloc);
+ ret = ocfs2_remove_extent(inode, &et, cpos, len, handle, ctxt->meta_ac,
+ &ctxt->dealloc);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
- le32_add_cpu(&xv->xr_clusters, -len);
+ le32_add_cpu(&vb->vb_xv->xr_clusters, -len);
- ret = ocfs2_journal_dirty(handle, root_bh);
+ ret = ocfs2_journal_dirty(handle, vb->vb_bh);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
- ret = ocfs2_truncate_log_append(osb, handle, phys_blkno, len);
+ ret = ocfs2_cache_cluster_dealloc(&ctxt->dealloc, phys_blkno, len);
if (ret)
mlog_errno(ret);
-out_commit:
- ocfs2_commit_trans(osb, handle);
out:
- mutex_unlock(&tl_inode->i_mutex);
-
- if (meta_ac)
- ocfs2_free_alloc_context(meta_ac);
-
return ret;
}
static int ocfs2_xattr_shrink_size(struct inode *inode,
u32 old_clusters,
u32 new_clusters,
- struct buffer_head *root_bh,
- struct ocfs2_xattr_value_root *xv)
+ struct ocfs2_xattr_value_buf *vb,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret = 0;
u32 trunc_len, cpos, phys_cpos, alloc_size;
u64 block;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct ocfs2_cached_dealloc_ctxt dealloc;
-
- ocfs2_init_dealloc_ctxt(&dealloc);
if (old_clusters <= new_clusters)
return 0;
@@ -414,7 +700,8 @@ static int ocfs2_xattr_shrink_size(struct inode *inode,
trunc_len = old_clusters - new_clusters;
while (trunc_len) {
ret = ocfs2_xattr_get_clusters(inode, cpos, &phys_cpos,
- &alloc_size, &xv->xr_list);
+ &alloc_size,
+ &vb->vb_xv->xr_list);
if (ret) {
mlog_errno(ret);
goto out;
@@ -423,9 +710,9 @@ static int ocfs2_xattr_shrink_size(struct inode *inode,
if (alloc_size > trunc_len)
alloc_size = trunc_len;
- ret = __ocfs2_remove_xattr_range(inode, root_bh, xv, cpos,
+ ret = __ocfs2_remove_xattr_range(inode, vb, cpos,
phys_cpos, alloc_size,
- &dealloc);
+ ctxt);
if (ret) {
mlog_errno(ret);
goto out;
@@ -439,20 +726,17 @@ static int ocfs2_xattr_shrink_size(struct inode *inode,
}
out:
- ocfs2_schedule_truncate_log_flush(osb, 1);
- ocfs2_run_deallocs(osb, &dealloc);
-
return ret;
}
static int ocfs2_xattr_value_truncate(struct inode *inode,
- struct buffer_head *root_bh,
- struct ocfs2_xattr_value_root *xv,
- int len)
+ struct ocfs2_xattr_value_buf *vb,
+ int len,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret;
u32 new_clusters = ocfs2_clusters_for_bytes(inode->i_sb, len);
- u32 old_clusters = le32_to_cpu(xv->xr_clusters);
+ u32 old_clusters = le32_to_cpu(vb->vb_xv->xr_clusters);
if (new_clusters == old_clusters)
return 0;
@@ -460,11 +744,11 @@ static int ocfs2_xattr_value_truncate(struct inode *inode,
if (new_clusters > old_clusters)
ret = ocfs2_xattr_extend_allocation(inode,
new_clusters - old_clusters,
- root_bh, xv);
+ vb, ctxt);
else
ret = ocfs2_xattr_shrink_size(inode,
old_clusters, new_clusters,
- root_bh, xv);
+ vb, ctxt);
return ret;
}
@@ -554,18 +838,14 @@ static int ocfs2_xattr_block_list(struct inode *inode,
if (!di->i_xattr_loc)
return ret;
- ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
+ ret = ocfs2_read_xattr_block(inode, le64_to_cpu(di->i_xattr_loc),
+ &blk_bh);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
- if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
- ret = -EIO;
- goto cleanup;
- }
-
if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {
struct ocfs2_xattr_header *header = &xb->xb_attrs.xb_header;
ret = ocfs2_xattr_list_entries(inode, header,
@@ -575,7 +855,7 @@ static int ocfs2_xattr_block_list(struct inode *inode,
ret = ocfs2_xattr_tree_list_index_block(inode, xt,
buffer, buffer_size);
}
-cleanup:
+
brelse(blk_bh);
return ret;
@@ -685,7 +965,7 @@ static int ocfs2_xattr_get_value_outside(struct inode *inode,
blkno = ocfs2_clusters_to_blocks(inode->i_sb, p_cluster);
/* Copy ocfs2_xattr_value */
for (i = 0; i < num_clusters * bpc; i++, blkno++) {
- ret = ocfs2_read_block(inode, blkno, &bh);
+ ret = ocfs2_read_block(inode, blkno, &bh, NULL);
if (ret) {
mlog_errno(ret);
goto out;
@@ -769,7 +1049,12 @@ static int ocfs2_xattr_block_get(struct inode *inode,
size_t size;
int ret = -ENODATA, name_offset, name_len, block_off, i;
- memset(&xs->bucket, 0, sizeof(xs->bucket));
+ xs->bucket = ocfs2_xattr_bucket_new(inode);
+ if (!xs->bucket) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto cleanup;
+ }
ret = ocfs2_xattr_block_find(inode, name_index, name, xs);
if (ret) {
@@ -795,11 +1080,11 @@ static int ocfs2_xattr_block_get(struct inode *inode,
if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED) {
ret = ocfs2_xattr_bucket_get_name_value(inode,
- xs->bucket.xh,
+ bucket_xh(xs->bucket),
i,
&block_off,
&name_offset);
- xs->base = xs->bucket.bhs[block_off]->b_data;
+ xs->base = bucket_block(xs->bucket, block_off);
}
if (ocfs2_xattr_is_local(xs->here)) {
memcpy(buffer, (void *)xs->base +
@@ -817,21 +1102,15 @@ static int ocfs2_xattr_block_get(struct inode *inode,
}
ret = size;
cleanup:
- for (i = 0; i < OCFS2_XATTR_MAX_BLOCKS_PER_BUCKET; i++)
- brelse(xs->bucket.bhs[i]);
- memset(&xs->bucket, 0, sizeof(xs->bucket));
+ ocfs2_xattr_bucket_free(xs->bucket);
brelse(xs->xattr_bh);
xs->xattr_bh = NULL;
return ret;
}
-/* ocfs2_xattr_get()
- *
- * Copy an extended attribute into the buffer provided.
- * Buffer is NULL to compute the size of buffer required.
- */
-static int ocfs2_xattr_get(struct inode *inode,
+int ocfs2_xattr_get_nolock(struct inode *inode,
+ struct buffer_head *di_bh,
int name_index,
const char *name,
void *buffer,
@@ -839,7 +1118,6 @@ static int ocfs2_xattr_get(struct inode *inode,
{
int ret;
struct ocfs2_dinode *di = NULL;
- struct buffer_head *di_bh = NULL;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_xattr_search xis = {
.not_found = -ENODATA,
@@ -854,11 +1132,6 @@ static int ocfs2_xattr_get(struct inode *inode,
if (!(oi->ip_dyn_features & OCFS2_HAS_XATTR_FL))
ret = -ENODATA;
- ret = ocfs2_inode_lock(inode, &di_bh, 0);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
- }
xis.inode_bh = xbs.inode_bh = di_bh;
di = (struct ocfs2_dinode *)di_bh->b_data;
@@ -869,6 +1142,32 @@ static int ocfs2_xattr_get(struct inode *inode,
ret = ocfs2_xattr_block_get(inode, name_index, name, buffer,
buffer_size, &xbs);
up_read(&oi->ip_xattr_sem);
+
+ return ret;
+}
+
+/* ocfs2_xattr_get()
+ *
+ * Copy an extended attribute into the buffer provided.
+ * Buffer is NULL to compute the size of buffer required.
+ */
+static int ocfs2_xattr_get(struct inode *inode,
+ int name_index,
+ const char *name,
+ void *buffer,
+ size_t buffer_size)
+{
+ int ret;
+ struct buffer_head *di_bh = NULL;
+
+ ret = ocfs2_inode_lock(inode, &di_bh, 0);
+ if (ret < 0) {
+ mlog_errno(ret);
+ return ret;
+ }
+ ret = ocfs2_xattr_get_nolock(inode, di_bh, name_index,
+ name, buffer, buffer_size);
+
ocfs2_inode_unlock(inode, 0);
brelse(di_bh);
@@ -877,44 +1176,36 @@ static int ocfs2_xattr_get(struct inode *inode,
}
static int __ocfs2_xattr_set_value_outside(struct inode *inode,
+ handle_t *handle,
struct ocfs2_xattr_value_root *xv,
const void *value,
int value_len)
{
- int ret = 0, i, cp_len, credits;
+ int ret = 0, i, cp_len;
u16 blocksize = inode->i_sb->s_blocksize;
u32 p_cluster, num_clusters;
u32 cpos = 0, bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
u32 clusters = ocfs2_clusters_for_bytes(inode->i_sb, value_len);
u64 blkno;
struct buffer_head *bh = NULL;
- handle_t *handle;
BUG_ON(clusters > le32_to_cpu(xv->xr_clusters));
- credits = clusters * bpc;
- handle = ocfs2_start_trans(OCFS2_SB(inode->i_sb), credits);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out;
- }
-
while (cpos < clusters) {
ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,
&num_clusters, &xv->xr_list);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
blkno = ocfs2_clusters_to_blocks(inode->i_sb, p_cluster);
for (i = 0; i < num_clusters * bpc; i++, blkno++) {
- ret = ocfs2_read_block(inode, blkno, &bh);
+ ret = ocfs2_read_block(inode, blkno, &bh, NULL);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
ret = ocfs2_journal_access(handle,
@@ -923,7 +1214,7 @@ static int __ocfs2_xattr_set_value_outside(struct inode *inode,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
cp_len = value_len > blocksize ? blocksize : value_len;
@@ -937,7 +1228,7 @@ static int __ocfs2_xattr_set_value_outside(struct inode *inode,
ret = ocfs2_journal_dirty(handle, bh);
if (ret < 0) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
brelse(bh);
bh = NULL;
@@ -951,8 +1242,6 @@ static int __ocfs2_xattr_set_value_outside(struct inode *inode,
}
cpos += num_clusters;
}
-out_commit:
- ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out:
brelse(bh);
@@ -960,28 +1249,22 @@ out:
}
static int ocfs2_xattr_cleanup(struct inode *inode,
+ handle_t *handle,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_value_buf *vb,
size_t offs)
{
- handle_t *handle = NULL;
int ret = 0;
size_t name_len = strlen(xi->name);
void *val = xs->base + offs;
size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
- handle = ocfs2_start_trans((OCFS2_SB(inode->i_sb)),
- OCFS2_XATTR_BLOCK_UPDATE_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out;
- }
- ret = ocfs2_journal_access(handle, inode, xs->xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
/* Decrease xattr count */
le16_add_cpu(&xs->header->xh_count, -1);
@@ -989,35 +1272,27 @@ static int ocfs2_xattr_cleanup(struct inode *inode,
memset((void *)xs->here, 0, sizeof(struct ocfs2_xattr_entry));
memset(val, 0, size);
- ret = ocfs2_journal_dirty(handle, xs->xattr_bh);
+ ret = ocfs2_journal_dirty(handle, vb->vb_bh);
if (ret < 0)
mlog_errno(ret);
-out_commit:
- ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out:
return ret;
}
static int ocfs2_xattr_update_entry(struct inode *inode,
+ handle_t *handle,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_value_buf *vb,
size_t offs)
{
- handle_t *handle = NULL;
- int ret = 0;
+ int ret;
- handle = ocfs2_start_trans((OCFS2_SB(inode->i_sb)),
- OCFS2_XATTR_BLOCK_UPDATE_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out;
- }
- ret = ocfs2_journal_access(handle, inode, xs->xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = vb->vb_access(handle, inode, vb->vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
xs->here->xe_name_offset = cpu_to_le16(offs);
@@ -1028,11 +1303,9 @@ static int ocfs2_xattr_update_entry(struct inode *inode,
ocfs2_xattr_set_local(xs->here, 0);
ocfs2_xattr_hash_entry(inode, xs->header, xs->here);
- ret = ocfs2_journal_dirty(handle, xs->xattr_bh);
+ ret = ocfs2_journal_dirty(handle, vb->vb_bh);
if (ret < 0)
mlog_errno(ret);
-out_commit:
- ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out:
return ret;
}
@@ -1045,6 +1318,8 @@ out:
static int ocfs2_xattr_set_value_outside(struct inode *inode,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt,
+ struct ocfs2_xattr_value_buf *vb,
size_t offs)
{
size_t name_len = strlen(xi->name);
@@ -1062,20 +1337,20 @@ static int ocfs2_xattr_set_value_outside(struct inode *inode,
xv->xr_list.l_tree_depth = 0;
xv->xr_list.l_count = cpu_to_le16(1);
xv->xr_list.l_next_free_rec = 0;
+ vb->vb_xv = xv;
- ret = ocfs2_xattr_value_truncate(inode, xs->xattr_bh, xv,
- xi->value_len);
+ ret = ocfs2_xattr_value_truncate(inode, vb, xi->value_len, ctxt);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
- ret = __ocfs2_xattr_set_value_outside(inode, xv, xi->value,
- xi->value_len);
+ ret = ocfs2_xattr_update_entry(inode, ctxt->handle, xi, xs, vb, offs);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
- ret = ocfs2_xattr_update_entry(inode, xi, xs, offs);
+ ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, vb->vb_xv,
+ xi->value, xi->value_len);
if (ret < 0)
mlog_errno(ret);
@@ -1195,6 +1470,7 @@ static void ocfs2_xattr_set_entry_local(struct inode *inode,
static int ocfs2_xattr_set_entry(struct inode *inode,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt,
int flag)
{
struct ocfs2_xattr_entry *last;
@@ -1202,7 +1478,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
size_t min_offs = xs->end - xs->base, name_len = strlen(xi->name);
size_t size_l = 0;
- handle_t *handle = NULL;
+ handle_t *handle = ctxt->handle;
int free, i, ret;
struct ocfs2_xattr_info xi_l = {
.name_index = xi->name_index,
@@ -1210,6 +1486,16 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
.value = xi->value,
.value_len = xi->value_len,
};
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = xs->xattr_bh,
+ .vb_access = ocfs2_journal_access_di,
+ };
+
+ if (!(flag & OCFS2_INLINE_XATTR_FL)) {
+ BUG_ON(xs->xattr_bh == xs->inode_bh);
+ vb.vb_access = ocfs2_journal_access_xb;
+ } else
+ BUG_ON(xs->xattr_bh != xs->inode_bh);
/* Compute min_offs, last and free space. */
last = xs->header->xh_entries;
@@ -1265,15 +1551,14 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
if (ocfs2_xattr_is_local(xs->here) && size == size_l) {
/* Replace existing local xattr with tree root */
ret = ocfs2_xattr_set_value_outside(inode, xi, xs,
- offs);
+ ctxt, &vb, offs);
if (ret < 0)
mlog_errno(ret);
goto out;
} else if (!ocfs2_xattr_is_local(xs->here)) {
/* For existing xattr which has value outside */
- struct ocfs2_xattr_value_root *xv = NULL;
- xv = (struct ocfs2_xattr_value_root *)(val +
- OCFS2_XATTR_SIZE(name_len));
+ vb.vb_xv = (struct ocfs2_xattr_value_root *)
+ (val + OCFS2_XATTR_SIZE(name_len));
if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
/*
@@ -1282,27 +1567,30 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
* then set new value with set_value_outside().
*/
ret = ocfs2_xattr_value_truncate(inode,
- xs->xattr_bh,
- xv,
- xi->value_len);
+ &vb,
+ xi->value_len,
+ ctxt);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
- ret = __ocfs2_xattr_set_value_outside(inode,
- xv,
- xi->value,
- xi->value_len);
+ ret = ocfs2_xattr_update_entry(inode,
+ handle,
+ xi,
+ xs,
+ &vb,
+ offs);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_xattr_update_entry(inode,
- xi,
- xs,
- offs);
+ ret = __ocfs2_xattr_set_value_outside(inode,
+ handle,
+ vb.vb_xv,
+ xi->value,
+ xi->value_len);
if (ret < 0)
mlog_errno(ret);
goto out;
@@ -1312,44 +1600,28 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
* just trucate old value to zero.
*/
ret = ocfs2_xattr_value_truncate(inode,
- xs->xattr_bh,
- xv,
- 0);
+ &vb,
+ 0,
+ ctxt);
if (ret < 0)
mlog_errno(ret);
}
}
}
- handle = ocfs2_start_trans((OCFS2_SB(inode->i_sb)),
- OCFS2_INODE_UPDATE_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_journal_access(handle, inode, xs->inode_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, xs->inode_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
if (!(flag & OCFS2_INLINE_XATTR_FL)) {
- /* set extended attribute in external block. */
- ret = ocfs2_extend_trans(handle,
- OCFS2_INODE_UPDATE_CREDITS +
- OCFS2_XATTR_BLOCK_UPDATE_CREDITS);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
- ret = ocfs2_journal_access(handle, inode, xs->xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = vb.vb_access(handle, inode, vb.vb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
}
@@ -1363,7 +1635,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
ret = ocfs2_journal_dirty(handle, xs->xattr_bh);
if (ret < 0) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
}
@@ -1391,25 +1663,19 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
oi->ip_dyn_features |= flag;
di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
spin_unlock(&oi->ip_lock);
- /* Update inode ctime */
- inode->i_ctime = CURRENT_TIME;
- di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
- di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
ret = ocfs2_journal_dirty(handle, xs->inode_bh);
if (ret < 0)
mlog_errno(ret);
-out_commit:
- ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
-
if (!ret && xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
/*
* Set value outside in B tree.
* This is the second step for value size > INLINE_SIZE.
*/
size_t offs = le16_to_cpu(xs->here->xe_name_offset);
- ret = ocfs2_xattr_set_value_outside(inode, xi, xs, offs);
+ ret = ocfs2_xattr_set_value_outside(inode, xi, xs, ctxt,
+ &vb, offs);
if (ret < 0) {
int ret2;
@@ -1418,41 +1684,56 @@ out_commit:
* If set value outside failed, we have to clean
* the junk tree root we have already set in local.
*/
- ret2 = ocfs2_xattr_cleanup(inode, xi, xs, offs);
+ ret2 = ocfs2_xattr_cleanup(inode, ctxt->handle,
+ xi, xs, &vb, offs);
if (ret2 < 0)
mlog_errno(ret2);
}
}
out:
return ret;
-
}
static int ocfs2_remove_value_outside(struct inode*inode,
- struct buffer_head *bh,
+ struct ocfs2_xattr_value_buf *vb,
struct ocfs2_xattr_header *header)
{
int ret = 0, i;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct ocfs2_xattr_set_ctxt ctxt = { NULL, NULL, };
+
+ ocfs2_init_dealloc_ctxt(&ctxt.dealloc);
+
+ ctxt.handle = ocfs2_start_trans(osb,
+ ocfs2_remove_extent_credits(osb->sb));
+ if (IS_ERR(ctxt.handle)) {
+ ret = PTR_ERR(ctxt.handle);
+ mlog_errno(ret);
+ goto out;
+ }
for (i = 0; i < le16_to_cpu(header->xh_count); i++) {
struct ocfs2_xattr_entry *entry = &header->xh_entries[i];
if (!ocfs2_xattr_is_local(entry)) {
- struct ocfs2_xattr_value_root *xv;
void *val;
val = (void *)header +
le16_to_cpu(entry->xe_name_offset);
- xv = (struct ocfs2_xattr_value_root *)
+ vb->vb_xv = (struct ocfs2_xattr_value_root *)
(val + OCFS2_XATTR_SIZE(entry->xe_name_len));
- ret = ocfs2_xattr_value_truncate(inode, bh, xv, 0);
+ ret = ocfs2_xattr_value_truncate(inode, vb, 0, &ctxt);
if (ret < 0) {
mlog_errno(ret);
- return ret;
+ break;
}
}
}
+ ocfs2_commit_trans(osb, ctxt.handle);
+ ocfs2_schedule_truncate_log_flush(osb, 1);
+ ocfs2_run_deallocs(osb, &ctxt.dealloc);
+out:
return ret;
}
@@ -1463,12 +1744,16 @@ static int ocfs2_xattr_ibody_remove(struct inode *inode,
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct ocfs2_xattr_header *header;
int ret;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = di_bh,
+ .vb_access = ocfs2_journal_access_di,
+ };
header = (struct ocfs2_xattr_header *)
((void *)di + inode->i_sb->s_blocksize -
le16_to_cpu(di->i_xattr_inline_size));
- ret = ocfs2_remove_value_outside(inode, di_bh, header);
+ ret = ocfs2_remove_value_outside(inode, &vb, header);
return ret;
}
@@ -1478,11 +1763,15 @@ static int ocfs2_xattr_block_remove(struct inode *inode,
{
struct ocfs2_xattr_block *xb;
int ret = 0;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = blk_bh,
+ .vb_access = ocfs2_journal_access_xb,
+ };
xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {
struct ocfs2_xattr_header *header = &(xb->xb_attrs.xb_header);
- ret = ocfs2_remove_value_outside(inode, blk_bh, header);
+ ret = ocfs2_remove_value_outside(inode, &vb, header);
} else
ret = ocfs2_delete_xattr_index_block(inode, blk_bh);
@@ -1502,24 +1791,19 @@ static int ocfs2_xattr_free_block(struct inode *inode,
u64 blk, bg_blkno;
u16 bit;
- ret = ocfs2_read_block(inode, block, &blk_bh);
+ ret = ocfs2_read_xattr_block(inode, block, &blk_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
- xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
- if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
- ret = -EIO;
- goto out;
- }
-
ret = ocfs2_xattr_block_remove(inode, blk_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
+ xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
blk = le64_to_cpu(xb->xb_blkno);
bit = le16_to_cpu(xb->xb_suballoc_bit);
bg_blkno = ocfs2_which_suballoc_group(blk, bit);
@@ -1606,8 +1890,8 @@ int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh)
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -1714,7 +1998,8 @@ static int ocfs2_xattr_ibody_find(struct inode *inode,
*/
static int ocfs2_xattr_ibody_set(struct inode *inode,
struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs)
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
@@ -1731,7 +2016,7 @@ static int ocfs2_xattr_ibody_set(struct inode *inode,
}
}
- ret = ocfs2_xattr_set_entry(inode, xi, xs,
+ ret = ocfs2_xattr_set_entry(inode, xi, xs, ctxt,
(OCFS2_INLINE_XATTR_FL | OCFS2_HAS_XATTR_FL));
out:
up_write(&oi->ip_alloc_sem);
@@ -1758,19 +2043,15 @@ static int ocfs2_xattr_block_find(struct inode *inode,
if (!di->i_xattr_loc)
return ret;
- ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
+ ret = ocfs2_read_xattr_block(inode, le64_to_cpu(di->i_xattr_loc),
+ &blk_bh);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
- xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
- if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
- ret = -EIO;
- goto cleanup;
- }
-
xs->xattr_bh = blk_bh;
+ xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {
xs->header = &xb->xb_attrs.xb_header;
@@ -1804,13 +2085,13 @@ cleanup:
*/
static int ocfs2_xattr_block_set(struct inode *inode,
struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs)
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
struct buffer_head *new_bh = NULL;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
- struct ocfs2_alloc_context *meta_ac = NULL;
- handle_t *handle = NULL;
+ handle_t *handle = ctxt->handle;
struct ocfs2_xattr_block *xblk = NULL;
u16 suballoc_bit_start;
u32 num_got;
@@ -1818,45 +2099,29 @@ static int ocfs2_xattr_block_set(struct inode *inode,
int ret;
if (!xs->xattr_bh) {
- /*
- * Alloc one external block for extended attribute
- * outside of inode.
- */
- ret = ocfs2_reserve_new_metadata_blocks(osb, 1, &meta_ac);
+ ret = ocfs2_journal_access_di(handle, inode, xs->inode_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret < 0) {
mlog_errno(ret);
- goto out;
- }
- handle = ocfs2_start_trans(osb,
- OCFS2_XATTR_BLOCK_CREATE_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out;
- }
- ret = ocfs2_journal_access(handle, inode, xs->inode_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (ret < 0) {
- mlog_errno(ret);
- goto out_commit;
+ goto end;
}
- ret = ocfs2_claim_metadata(osb, handle, meta_ac, 1,
+ ret = ocfs2_claim_metadata(osb, handle, ctxt->meta_ac, 1,
&suballoc_bit_start, &num_got,
&first_blkno);
if (ret < 0) {
mlog_errno(ret);
- goto out_commit;
+ goto end;
}
new_bh = sb_getblk(inode->i_sb, first_blkno);
ocfs2_set_new_buffer_uptodate(inode, new_bh);
- ret = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_xb(handle, inode, new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret < 0) {
mlog_errno(ret);
- goto out_commit;
+ goto end;
}
/* Initialize ocfs2_xattr_block */
@@ -1874,44 +2139,555 @@ static int ocfs2_xattr_block_set(struct inode *inode,
xs->end = (void *)xblk + inode->i_sb->s_blocksize;
xs->here = xs->header->xh_entries;
-
ret = ocfs2_journal_dirty(handle, new_bh);
if (ret < 0) {
mlog_errno(ret);
- goto out_commit;
+ goto end;
}
di->i_xattr_loc = cpu_to_le64(first_blkno);
- ret = ocfs2_journal_dirty(handle, xs->inode_bh);
- if (ret < 0)
- mlog_errno(ret);
-out_commit:
- ocfs2_commit_trans(osb, handle);
-out:
- if (meta_ac)
- ocfs2_free_alloc_context(meta_ac);
- if (ret < 0)
- return ret;
+ ocfs2_journal_dirty(handle, xs->inode_bh);
} else
xblk = (struct ocfs2_xattr_block *)xs->xattr_bh->b_data;
if (!(le16_to_cpu(xblk->xb_flags) & OCFS2_XATTR_INDEXED)) {
/* Set extended attribute into external block */
- ret = ocfs2_xattr_set_entry(inode, xi, xs, OCFS2_HAS_XATTR_FL);
+ ret = ocfs2_xattr_set_entry(inode, xi, xs, ctxt,
+ OCFS2_HAS_XATTR_FL);
if (!ret || ret != -ENOSPC)
goto end;
- ret = ocfs2_xattr_create_index_block(inode, xs);
+ ret = ocfs2_xattr_create_index_block(inode, xs, ctxt);
if (ret)
goto end;
}
- ret = ocfs2_xattr_set_entry_index_block(inode, xi, xs);
+ ret = ocfs2_xattr_set_entry_index_block(inode, xi, xs, ctxt);
end:
return ret;
}
+/* Check whether the new xattr can be inserted into the inode. */
+static int ocfs2_xattr_can_be_in_inode(struct inode *inode,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xs)
+{
+ u64 value_size;
+ struct ocfs2_xattr_entry *last;
+ int free, i;
+ size_t min_offs = xs->end - xs->base;
+
+ if (!xs->header)
+ return 0;
+
+ last = xs->header->xh_entries;
+
+ for (i = 0; i < le16_to_cpu(xs->header->xh_count); i++) {
+ size_t offs = le16_to_cpu(last->xe_name_offset);
+ if (offs < min_offs)
+ min_offs = offs;
+ last += 1;
+ }
+
+ free = min_offs - ((void *)last - xs->base) - sizeof(__u32);
+ if (free < 0)
+ return 0;
+
+ BUG_ON(!xs->not_found);
+
+ if (xi->value_len > OCFS2_XATTR_INLINE_SIZE)
+ value_size = OCFS2_XATTR_ROOT_SIZE;
+ else
+ value_size = OCFS2_XATTR_SIZE(xi->value_len);
+
+ if (free >= sizeof(struct ocfs2_xattr_entry) +
+ OCFS2_XATTR_SIZE(strlen(xi->name)) + value_size)
+ return 1;
+
+ return 0;
+}
+
+static int ocfs2_calc_xattr_set_need(struct inode *inode,
+ struct ocfs2_dinode *di,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xis,
+ struct ocfs2_xattr_search *xbs,
+ int *clusters_need,
+ int *meta_need,
+ int *credits_need)
+{
+ int ret = 0, old_in_xb = 0;
+ int clusters_add = 0, meta_add = 0, credits = 0;
+ struct buffer_head *bh = NULL;
+ struct ocfs2_xattr_block *xb = NULL;
+ struct ocfs2_xattr_entry *xe = NULL;
+ struct ocfs2_xattr_value_root *xv = NULL;
+ char *base = NULL;
+ int name_offset, name_len = 0;
+ u32 new_clusters = ocfs2_clusters_for_bytes(inode->i_sb,
+ xi->value_len);
+ u64 value_size;
+
+ /*
+ * Calculate the clusters we need to write.
+ * No matter whether we replace an old one or add a new one,
+ * we need this for writing.
+ */
+ if (xi->value_len > OCFS2_XATTR_INLINE_SIZE)
+ credits += new_clusters *
+ ocfs2_clusters_to_blocks(inode->i_sb, 1);
+
+ if (xis->not_found && xbs->not_found) {
+ credits += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+
+ if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ clusters_add += new_clusters;
+ credits += ocfs2_calc_extend_credits(inode->i_sb,
+ &def_xv.xv.xr_list,
+ new_clusters);
+ }
+
+ goto meta_guess;
+ }
+
+ if (!xis->not_found) {
+ xe = xis->here;
+ name_offset = le16_to_cpu(xe->xe_name_offset);
+ name_len = OCFS2_XATTR_SIZE(xe->xe_name_len);
+ base = xis->base;
+ credits += OCFS2_INODE_UPDATE_CREDITS;
+ } else {
+ int i, block_off = 0;
+ xb = (struct ocfs2_xattr_block *)xbs->xattr_bh->b_data;
+ xe = xbs->here;
+ name_offset = le16_to_cpu(xe->xe_name_offset);
+ name_len = OCFS2_XATTR_SIZE(xe->xe_name_len);
+ i = xbs->here - xbs->header->xh_entries;
+ old_in_xb = 1;
+
+ if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED) {
+ ret = ocfs2_xattr_bucket_get_name_value(inode,
+ bucket_xh(xbs->bucket),
+ i, &block_off,
+ &name_offset);
+ base = bucket_block(xbs->bucket, block_off);
+ credits += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+ } else {
+ base = xbs->base;
+ credits += OCFS2_XATTR_BLOCK_UPDATE_CREDITS;
+ }
+ }
+
+ /*
+ * delete a xattr doesn't need metadata and cluster allocation.
+ * so just calculate the credits and return.
+ *
+ * The credits for removing the value tree will be extended
+ * by ocfs2_remove_extent itself.
+ */
+ if (!xi->value) {
+ if (!ocfs2_xattr_is_local(xe))
+ credits += ocfs2_remove_extent_credits(inode->i_sb);
+
+ goto out;
+ }
+
+ /* do cluster allocation guess first. */
+ value_size = le64_to_cpu(xe->xe_value_size);
+
+ if (old_in_xb) {
+ /*
+ * In xattr set, we always try to set the xe in inode first,
+ * so if it can be inserted into inode successfully, the old
+ * one will be removed from the xattr block, and this xattr
+ * will be inserted into inode as a new xattr in inode.
+ */
+ if (ocfs2_xattr_can_be_in_inode(inode, xi, xis)) {
+ clusters_add += new_clusters;
+ credits += ocfs2_remove_extent_credits(inode->i_sb) +
+ OCFS2_INODE_UPDATE_CREDITS;
+ if (!ocfs2_xattr_is_local(xe))
+ credits += ocfs2_calc_extend_credits(
+ inode->i_sb,
+ &def_xv.xv.xr_list,
+ new_clusters);
+ goto out;
+ }
+ }
+
+ if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ /* the new values will be stored outside. */
+ u32 old_clusters = 0;
+
+ if (!ocfs2_xattr_is_local(xe)) {
+ old_clusters = ocfs2_clusters_for_bytes(inode->i_sb,
+ value_size);
+ xv = (struct ocfs2_xattr_value_root *)
+ (base + name_offset + name_len);
+ value_size = OCFS2_XATTR_ROOT_SIZE;
+ } else
+ xv = &def_xv.xv;
+
+ if (old_clusters >= new_clusters) {
+ credits += ocfs2_remove_extent_credits(inode->i_sb);
+ goto out;
+ } else {
+ meta_add += ocfs2_extend_meta_needed(&xv->xr_list);
+ clusters_add += new_clusters - old_clusters;
+ credits += ocfs2_calc_extend_credits(inode->i_sb,
+ &xv->xr_list,
+ new_clusters -
+ old_clusters);
+ if (value_size >= OCFS2_XATTR_ROOT_SIZE)
+ goto out;
+ }
+ } else {
+ /*
+ * Now the new value will be stored inside. So if the new
+ * value is smaller than the size of value root or the old
+ * value, we don't need any allocation, otherwise we have
+ * to guess metadata allocation.
+ */
+ if ((ocfs2_xattr_is_local(xe) && value_size >= xi->value_len) ||
+ (!ocfs2_xattr_is_local(xe) &&
+ OCFS2_XATTR_ROOT_SIZE >= xi->value_len))
+ goto out;
+ }
+
+meta_guess:
+ /* calculate metadata allocation. */
+ if (di->i_xattr_loc) {
+ if (!xbs->xattr_bh) {
+ ret = ocfs2_read_xattr_block(inode,
+ le64_to_cpu(di->i_xattr_loc),
+ &bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ xb = (struct ocfs2_xattr_block *)bh->b_data;
+ } else
+ xb = (struct ocfs2_xattr_block *)xbs->xattr_bh->b_data;
+
+ /*
+ * If there is already an xattr tree, good, we can calculate
+ * like other b-trees. Otherwise we may have the chance of
+ * create a tree, the credit calculation is borrowed from
+ * ocfs2_calc_extend_credits with root_el = NULL. And the
+ * new tree will be cluster based, so no meta is needed.
+ */
+ if (le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED) {
+ struct ocfs2_extent_list *el =
+ &xb->xb_attrs.xb_root.xt_list;
+ meta_add += ocfs2_extend_meta_needed(el);
+ credits += ocfs2_calc_extend_credits(inode->i_sb,
+ el, 1);
+ } else
+ credits += OCFS2_SUBALLOC_ALLOC + 1;
+
+ /*
+ * This cluster will be used either for new bucket or for
+ * new xattr block.
+ * If the cluster size is the same as the bucket size, one
+ * more is needed since we may need to extend the bucket
+ * also.
+ */
+ clusters_add += 1;
+ credits += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+ if (OCFS2_XATTR_BUCKET_SIZE ==
+ OCFS2_SB(inode->i_sb)->s_clustersize) {
+ credits += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+ clusters_add += 1;
+ }
+ } else {
+ meta_add += 1;
+ credits += OCFS2_XATTR_BLOCK_CREATE_CREDITS;
+ }
+out:
+ if (clusters_need)
+ *clusters_need = clusters_add;
+ if (meta_need)
+ *meta_need = meta_add;
+ if (credits_need)
+ *credits_need = credits;
+ brelse(bh);
+ return ret;
+}
+
+static int ocfs2_init_xattr_set_ctxt(struct inode *inode,
+ struct ocfs2_dinode *di,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xis,
+ struct ocfs2_xattr_search *xbs,
+ struct ocfs2_xattr_set_ctxt *ctxt,
+ int *credits)
+{
+ int clusters_add, meta_add, ret;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+
+ memset(ctxt, 0, sizeof(struct ocfs2_xattr_set_ctxt));
+
+ ocfs2_init_dealloc_ctxt(&ctxt->dealloc);
+
+ ret = ocfs2_calc_xattr_set_need(inode, di, xi, xis, xbs,
+ &clusters_add, &meta_add, credits);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ mlog(0, "Set xattr %s, reserve meta blocks = %d, clusters = %d, "
+ "credits = %d\n", xi->name, meta_add, clusters_add, *credits);
+
+ if (meta_add) {
+ ret = ocfs2_reserve_new_metadata_blocks(osb, meta_add,
+ &ctxt->meta_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ if (clusters_add) {
+ ret = ocfs2_reserve_clusters(osb, clusters_add, &ctxt->data_ac);
+ if (ret)
+ mlog_errno(ret);
+ }
+out:
+ if (ret) {
+ if (ctxt->meta_ac) {
+ ocfs2_free_alloc_context(ctxt->meta_ac);
+ ctxt->meta_ac = NULL;
+ }
+
+ /*
+ * We cannot have an error and a non null ctxt->data_ac.
+ */
+ }
+
+ return ret;
+}
+
+static int __ocfs2_xattr_set_handle(struct inode *inode,
+ struct ocfs2_dinode *di,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xis,
+ struct ocfs2_xattr_search *xbs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int ret = 0, credits, old_found;
+
+ if (!xi->value) {
+ /* Remove existing extended attribute */
+ if (!xis->not_found)
+ ret = ocfs2_xattr_ibody_set(inode, xi, xis, ctxt);
+ else if (!xbs->not_found)
+ ret = ocfs2_xattr_block_set(inode, xi, xbs, ctxt);
+ } else {
+ /* We always try to set extended attribute into inode first*/
+ ret = ocfs2_xattr_ibody_set(inode, xi, xis, ctxt);
+ if (!ret && !xbs->not_found) {
+ /*
+ * If succeed and that extended attribute existing in
+ * external block, then we will remove it.
+ */
+ xi->value = NULL;
+ xi->value_len = 0;
+
+ old_found = xis->not_found;
+ xis->not_found = -ENODATA;
+ ret = ocfs2_calc_xattr_set_need(inode,
+ di,
+ xi,
+ xis,
+ xbs,
+ NULL,
+ NULL,
+ &credits);
+ xis->not_found = old_found;
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_extend_trans(ctxt->handle, credits +
+ ctxt->handle->h_buffer_credits);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ ret = ocfs2_xattr_block_set(inode, xi, xbs, ctxt);
+ } else if (ret == -ENOSPC) {
+ if (di->i_xattr_loc && !xbs->xattr_bh) {
+ ret = ocfs2_xattr_block_find(inode,
+ xi->name_index,
+ xi->name, xbs);
+ if (ret)
+ goto out;
+
+ old_found = xis->not_found;
+ xis->not_found = -ENODATA;
+ ret = ocfs2_calc_xattr_set_need(inode,
+ di,
+ xi,
+ xis,
+ xbs,
+ NULL,
+ NULL,
+ &credits);
+ xis->not_found = old_found;
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_extend_trans(ctxt->handle, credits +
+ ctxt->handle->h_buffer_credits);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+ /*
+ * If no space in inode, we will set extended attribute
+ * into external block.
+ */
+ ret = ocfs2_xattr_block_set(inode, xi, xbs, ctxt);
+ if (ret)
+ goto out;
+ if (!xis->not_found) {
+ /*
+ * If succeed and that extended attribute
+ * existing in inode, we will remove it.
+ */
+ xi->value = NULL;
+ xi->value_len = 0;
+ xbs->not_found = -ENODATA;
+ ret = ocfs2_calc_xattr_set_need(inode,
+ di,
+ xi,
+ xis,
+ xbs,
+ NULL,
+ NULL,
+ &credits);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_extend_trans(ctxt->handle, credits +
+ ctxt->handle->h_buffer_credits);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ ret = ocfs2_xattr_ibody_set(inode, xi,
+ xis, ctxt);
+ }
+ }
+ }
+
+ if (!ret) {
+ /* Update inode ctime. */
+ ret = ocfs2_journal_access(ctxt->handle, inode, xis->inode_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ inode->i_ctime = CURRENT_TIME;
+ di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
+ di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
+ ocfs2_journal_dirty(ctxt->handle, xis->inode_bh);
+ }
+out:
+ return ret;
+}
+
+/*
+ * This function only called duing creating inode
+ * for init security/acl xattrs of the new inode.
+ * All transanction credits have been reserved in mknod.
+ */
+int ocfs2_xattr_set_handle(handle_t *handle,
+ struct inode *inode,
+ struct buffer_head *di_bh,
+ int name_index,
+ const char *name,
+ const void *value,
+ size_t value_len,
+ int flags,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac)
+{
+ struct ocfs2_dinode *di;
+ int ret;
+
+ struct ocfs2_xattr_info xi = {
+ .name_index = name_index,
+ .name = name,
+ .value = value,
+ .value_len = value_len,
+ };
+
+ struct ocfs2_xattr_search xis = {
+ .not_found = -ENODATA,
+ };
+
+ struct ocfs2_xattr_search xbs = {
+ .not_found = -ENODATA,
+ };
+
+ struct ocfs2_xattr_set_ctxt ctxt = {
+ .handle = handle,
+ .meta_ac = meta_ac,
+ .data_ac = data_ac,
+ };
+
+ if (!ocfs2_supports_xattr(OCFS2_SB(inode->i_sb)))
+ return -EOPNOTSUPP;
+
+ /*
+ * In extreme situation, may need xattr bucket when
+ * block size is too small. And we have already reserved
+ * the credits for bucket in mknod.
+ */
+ if (inode->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE) {
+ xbs.bucket = ocfs2_xattr_bucket_new(inode);
+ if (!xbs.bucket) {
+ mlog_errno(-ENOMEM);
+ return -ENOMEM;
+ }
+ }
+
+ xis.inode_bh = xbs.inode_bh = di_bh;
+ di = (struct ocfs2_dinode *)di_bh->b_data;
+
+ down_write(&OCFS2_I(inode)->ip_xattr_sem);
+
+ ret = ocfs2_xattr_ibody_find(inode, name_index, name, &xis);
+ if (ret)
+ goto cleanup;
+ if (xis.not_found) {
+ ret = ocfs2_xattr_block_find(inode, name_index, name, &xbs);
+ if (ret)
+ goto cleanup;
+ }
+
+ ret = __ocfs2_xattr_set_handle(inode, di, &xi, &xis, &xbs, &ctxt);
+
+cleanup:
+ up_write(&OCFS2_I(inode)->ip_xattr_sem);
+ brelse(xbs.xattr_bh);
+ ocfs2_xattr_bucket_free(xbs.bucket);
+
+ return ret;
+}
+
/*
* ocfs2_xattr_set()
*
@@ -1928,8 +2704,10 @@ int ocfs2_xattr_set(struct inode *inode,
{
struct buffer_head *di_bh = NULL;
struct ocfs2_dinode *di;
- int ret;
- u16 i, blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+ int ret, credits;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct inode *tl_inode = osb->osb_tl_inode;
+ struct ocfs2_xattr_set_ctxt ctxt = { NULL, NULL, };
struct ocfs2_xattr_info xi = {
.name_index = name_index,
@@ -1949,10 +2727,20 @@ int ocfs2_xattr_set(struct inode *inode,
if (!ocfs2_supports_xattr(OCFS2_SB(inode->i_sb)))
return -EOPNOTSUPP;
+ /*
+ * Only xbs will be used on indexed trees. xis doesn't need a
+ * bucket.
+ */
+ xbs.bucket = ocfs2_xattr_bucket_new(inode);
+ if (!xbs.bucket) {
+ mlog_errno(-ENOMEM);
+ return -ENOMEM;
+ }
+
ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret < 0) {
mlog_errno(ret);
- return ret;
+ goto cleanup_nolock;
}
xis.inode_bh = xbs.inode_bh = di_bh;
di = (struct ocfs2_dinode *)di_bh->b_data;
@@ -1984,55 +2772,53 @@ int ocfs2_xattr_set(struct inode *inode,
goto cleanup;
}
- if (!value) {
- /* Remove existing extended attribute */
- if (!xis.not_found)
- ret = ocfs2_xattr_ibody_set(inode, &xi, &xis);
- else if (!xbs.not_found)
- ret = ocfs2_xattr_block_set(inode, &xi, &xbs);
- } else {
- /* We always try to set extended attribute into inode first*/
- ret = ocfs2_xattr_ibody_set(inode, &xi, &xis);
- if (!ret && !xbs.not_found) {
- /*
- * If succeed and that extended attribute existing in
- * external block, then we will remove it.
- */
- xi.value = NULL;
- xi.value_len = 0;
- ret = ocfs2_xattr_block_set(inode, &xi, &xbs);
- } else if (ret == -ENOSPC) {
- if (di->i_xattr_loc && !xbs.xattr_bh) {
- ret = ocfs2_xattr_block_find(inode, name_index,
- name, &xbs);
- if (ret)
- goto cleanup;
- }
- /*
- * If no space in inode, we will set extended attribute
- * into external block.
- */
- ret = ocfs2_xattr_block_set(inode, &xi, &xbs);
- if (ret)
- goto cleanup;
- if (!xis.not_found) {
- /*
- * If succeed and that extended attribute
- * existing in inode, we will remove it.
- */
- xi.value = NULL;
- xi.value_len = 0;
- ret = ocfs2_xattr_ibody_set(inode, &xi, &xis);
- }
+
+ mutex_lock(&tl_inode->i_mutex);
+
+ if (ocfs2_truncate_log_needs_flush(osb)) {
+ ret = __ocfs2_flush_truncate_log(osb);
+ if (ret < 0) {
+ mutex_unlock(&tl_inode->i_mutex);
+ mlog_errno(ret);
+ goto cleanup;
}
}
+ mutex_unlock(&tl_inode->i_mutex);
+
+ ret = ocfs2_init_xattr_set_ctxt(inode, di, &xi, &xis,
+ &xbs, &ctxt, &credits);
+ if (ret) {
+ mlog_errno(ret);
+ goto cleanup;
+ }
+
+ /* we need to update inode's ctime field, so add credit for it. */
+ credits += OCFS2_INODE_UPDATE_CREDITS;
+ ctxt.handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(ctxt.handle)) {
+ ret = PTR_ERR(ctxt.handle);
+ mlog_errno(ret);
+ goto cleanup;
+ }
+
+ ret = __ocfs2_xattr_set_handle(inode, di, &xi, &xis, &xbs, &ctxt);
+
+ ocfs2_commit_trans(osb, ctxt.handle);
+
+ if (ctxt.data_ac)
+ ocfs2_free_alloc_context(ctxt.data_ac);
+ if (ctxt.meta_ac)
+ ocfs2_free_alloc_context(ctxt.meta_ac);
+ if (ocfs2_dealloc_has_cluster(&ctxt.dealloc))
+ ocfs2_schedule_truncate_log_flush(osb, 1);
+ ocfs2_run_deallocs(osb, &ctxt.dealloc);
cleanup:
up_write(&OCFS2_I(inode)->ip_xattr_sem);
ocfs2_inode_unlock(inode, 1);
+cleanup_nolock:
brelse(di_bh);
brelse(xbs.xattr_bh);
- for (i = 0; i < blk_per_bucket; i++)
- brelse(xbs.bucket.bhs[i]);
+ ocfs2_xattr_bucket_free(xbs.bucket);
return ret;
}
@@ -2107,7 +2893,7 @@ typedef int (xattr_bucket_func)(struct inode *inode,
void *para);
static int ocfs2_find_xe_in_bucket(struct inode *inode,
- struct buffer_head *header_bh,
+ struct ocfs2_xattr_bucket *bucket,
int name_index,
const char *name,
u32 name_hash,
@@ -2115,11 +2901,9 @@ static int ocfs2_find_xe_in_bucket(struct inode *inode,
int *found)
{
int i, ret = 0, cmp = 1, block_off, new_offset;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)header_bh->b_data;
+ struct ocfs2_xattr_header *xh = bucket_xh(bucket);
size_t name_len = strlen(name);
struct ocfs2_xattr_entry *xe = NULL;
- struct buffer_head *name_bh = NULL;
char *xe_name;
/*
@@ -2150,19 +2934,9 @@ static int ocfs2_find_xe_in_bucket(struct inode *inode,
break;
}
- ret = ocfs2_read_block(inode, header_bh->b_blocknr + block_off,
- &name_bh);
- if (ret) {
- mlog_errno(ret);
- break;
- }
- xe_name = name_bh->b_data + new_offset;
- cmp = memcmp(name, xe_name, name_len);
- brelse(name_bh);
- name_bh = NULL;
-
- if (cmp == 0) {
+ xe_name = bucket_block(bucket, block_off) + new_offset;
+ if (!memcmp(name, xe_name, name_len)) {
*xe_index = i;
*found = 1;
ret = 0;
@@ -2192,39 +2966,42 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
struct ocfs2_xattr_search *xs)
{
int ret, found = 0;
- struct buffer_head *bh = NULL;
- struct buffer_head *lower_bh = NULL;
struct ocfs2_xattr_header *xh = NULL;
struct ocfs2_xattr_entry *xe = NULL;
u16 index = 0;
u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
int low_bucket = 0, bucket, high_bucket;
+ struct ocfs2_xattr_bucket *search;
u32 last_hash;
- u64 blkno;
+ u64 blkno, lower_blkno = 0;
- ret = ocfs2_read_block(inode, p_blkno, &bh);
+ search = ocfs2_xattr_bucket_new(inode);
+ if (!search) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_read_xattr_bucket(search, p_blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
- xh = (struct ocfs2_xattr_header *)bh->b_data;
+ xh = bucket_xh(search);
high_bucket = le16_to_cpu(xh->xh_num_buckets) - 1;
-
while (low_bucket <= high_bucket) {
- brelse(bh);
- bh = NULL;
- bucket = (low_bucket + high_bucket) / 2;
+ ocfs2_xattr_bucket_relse(search);
+ bucket = (low_bucket + high_bucket) / 2;
blkno = p_blkno + bucket * blk_per_bucket;
-
- ret = ocfs2_read_block(inode, blkno, &bh);
+ ret = ocfs2_read_xattr_bucket(search, blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
- xh = (struct ocfs2_xattr_header *)bh->b_data;
+ xh = bucket_xh(search);
xe = &xh->xh_entries[0];
if (name_hash < le32_to_cpu(xe->xe_name_hash)) {
high_bucket = bucket - 1;
@@ -2241,10 +3018,8 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
last_hash = le32_to_cpu(xe->xe_name_hash);
- /* record lower_bh which may be the insert place. */
- brelse(lower_bh);
- lower_bh = bh;
- bh = NULL;
+ /* record lower_blkno which may be the insert place. */
+ lower_blkno = blkno;
if (name_hash > le32_to_cpu(xe->xe_name_hash)) {
low_bucket = bucket + 1;
@@ -2252,7 +3027,7 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
}
/* the searched xattr should reside in this bucket if exists. */
- ret = ocfs2_find_xe_in_bucket(inode, lower_bh,
+ ret = ocfs2_find_xe_in_bucket(inode, search,
name_index, name, name_hash,
&index, &found);
if (ret) {
@@ -2267,46 +3042,29 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
* When the xattr's hash value is in the gap of 2 buckets, we will
* always set it to the previous bucket.
*/
- if (!lower_bh) {
- /*
- * We can't find any bucket whose first name_hash is less
- * than the find name_hash.
- */
- BUG_ON(bh->b_blocknr != p_blkno);
- lower_bh = bh;
- bh = NULL;
+ if (!lower_blkno)
+ lower_blkno = p_blkno;
+
+ /* This should be in cache - we just read it during the search */
+ ret = ocfs2_read_xattr_bucket(xs->bucket, lower_blkno);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
}
- xs->bucket.bhs[0] = lower_bh;
- xs->bucket.xh = (struct ocfs2_xattr_header *)
- xs->bucket.bhs[0]->b_data;
- lower_bh = NULL;
- xs->header = xs->bucket.xh;
- xs->base = xs->bucket.bhs[0]->b_data;
+ xs->header = bucket_xh(xs->bucket);
+ xs->base = bucket_block(xs->bucket, 0);
xs->end = xs->base + inode->i_sb->s_blocksize;
if (found) {
- /*
- * If we have found the xattr enty, read all the blocks in
- * this bucket.
- */
- ret = ocfs2_read_blocks(inode, xs->bucket.bhs[0]->b_blocknr + 1,
- blk_per_bucket - 1, &xs->bucket.bhs[1],
- 0);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
xs->here = &xs->header->xh_entries[index];
mlog(0, "find xattr %s in bucket %llu, entry = %u\n", name,
- (unsigned long long)xs->bucket.bhs[0]->b_blocknr, index);
+ (unsigned long long)bucket_blkno(xs->bucket), index);
} else
ret = -ENODATA;
out:
- brelse(bh);
- brelse(lower_bh);
+ ocfs2_xattr_bucket_free(search);
return ret;
}
@@ -2357,53 +3115,50 @@ static int ocfs2_iterate_xattr_buckets(struct inode *inode,
xattr_bucket_func *func,
void *para)
{
- int i, j, ret = 0;
- int blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+ int i, ret = 0;
u32 bpc = ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb));
u32 num_buckets = clusters * bpc;
- struct ocfs2_xattr_bucket bucket;
+ struct ocfs2_xattr_bucket *bucket;
- memset(&bucket, 0, sizeof(bucket));
+ bucket = ocfs2_xattr_bucket_new(inode);
+ if (!bucket) {
+ mlog_errno(-ENOMEM);
+ return -ENOMEM;
+ }
mlog(0, "iterating xattr buckets in %u clusters starting from %llu\n",
clusters, (unsigned long long)blkno);
- for (i = 0; i < num_buckets; i++, blkno += blk_per_bucket) {
- ret = ocfs2_read_blocks(inode, blkno, blk_per_bucket,
- bucket.bhs, 0);
+ for (i = 0; i < num_buckets; i++, blkno += bucket->bu_blocks) {
+ ret = ocfs2_read_xattr_bucket(bucket, blkno);
if (ret) {
mlog_errno(ret);
- goto out;
+ break;
}
- bucket.xh = (struct ocfs2_xattr_header *)bucket.bhs[0]->b_data;
/*
* The real bucket num in this series of blocks is stored
* in the 1st bucket.
*/
if (i == 0)
- num_buckets = le16_to_cpu(bucket.xh->xh_num_buckets);
+ num_buckets = le16_to_cpu(bucket_xh(bucket)->xh_num_buckets);
mlog(0, "iterating xattr bucket %llu, first hash %u\n",
(unsigned long long)blkno,
- le32_to_cpu(bucket.xh->xh_entries[0].xe_name_hash));
+ le32_to_cpu(bucket_xh(bucket)->xh_entries[0].xe_name_hash));
if (func) {
- ret = func(inode, &bucket, para);
- if (ret) {
+ ret = func(inode, bucket, para);
+ if (ret)
mlog_errno(ret);
- break;
- }
+ /* Fall through to bucket_relse() */
}
- for (j = 0; j < blk_per_bucket; j++)
- brelse(bucket.bhs[j]);
- memset(&bucket, 0, sizeof(bucket));
+ ocfs2_xattr_bucket_relse(bucket);
+ if (ret)
+ break;
}
-out:
- for (j = 0; j < blk_per_bucket; j++)
- brelse(bucket.bhs[j]);
-
+ ocfs2_xattr_bucket_free(bucket);
return ret;
}
@@ -2441,21 +3196,21 @@ static int ocfs2_list_xattr_bucket(struct inode *inode,
int i, block_off, new_offset;
const char *prefix, *name;
- for (i = 0 ; i < le16_to_cpu(bucket->xh->xh_count); i++) {
- struct ocfs2_xattr_entry *entry = &bucket->xh->xh_entries[i];
+ for (i = 0 ; i < le16_to_cpu(bucket_xh(bucket)->xh_count); i++) {
+ struct ocfs2_xattr_entry *entry = &bucket_xh(bucket)->xh_entries[i];
type = ocfs2_xattr_get_type(entry);
prefix = ocfs2_xattr_prefix(type);
if (prefix) {
ret = ocfs2_xattr_bucket_get_name_value(inode,
- bucket->xh,
+ bucket_xh(bucket),
i,
&block_off,
&new_offset);
if (ret)
break;
- name = (const char *)bucket->bhs[block_off]->b_data +
+ name = (const char *)bucket_block(bucket, block_off) +
new_offset;
ret = ocfs2_xattr_list_entry(xl->buffer,
xl->buffer_size,
@@ -2540,32 +3295,34 @@ static void swap_xe(void *a, void *b, int size)
/*
* When the ocfs2_xattr_block is filled up, new bucket will be created
* and all the xattr entries will be moved to the new bucket.
+ * The header goes at the start of the bucket, and the names+values are
+ * filled from the end. This is why *target starts as the last buffer.
* Note: we need to sort the entries since they are not saved in order
* in the ocfs2_xattr_block.
*/
static void ocfs2_cp_xattr_block_to_bucket(struct inode *inode,
struct buffer_head *xb_bh,
- struct buffer_head *xh_bh,
- struct buffer_head *data_bh)
+ struct ocfs2_xattr_bucket *bucket)
{
int i, blocksize = inode->i_sb->s_blocksize;
+ int blks = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
u16 offset, size, off_change;
struct ocfs2_xattr_entry *xe;
struct ocfs2_xattr_block *xb =
(struct ocfs2_xattr_block *)xb_bh->b_data;
struct ocfs2_xattr_header *xb_xh = &xb->xb_attrs.xb_header;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)xh_bh->b_data;
+ struct ocfs2_xattr_header *xh = bucket_xh(bucket);
u16 count = le16_to_cpu(xb_xh->xh_count);
- char *target = xh_bh->b_data, *src = xb_bh->b_data;
+ char *src = xb_bh->b_data;
+ char *target = bucket_block(bucket, blks - 1);
mlog(0, "cp xattr from block %llu to bucket %llu\n",
(unsigned long long)xb_bh->b_blocknr,
- (unsigned long long)xh_bh->b_blocknr);
+ (unsigned long long)bucket_blkno(bucket));
+
+ for (i = 0; i < blks; i++)
+ memset(bucket_block(bucket, i), 0, blocksize);
- memset(xh_bh->b_data, 0, blocksize);
- if (data_bh)
- memset(data_bh->b_data, 0, blocksize);
/*
* Since the xe_name_offset is based on ocfs2_xattr_header,
* there is a offset change corresponding to the change of
@@ -2577,8 +3334,6 @@ static void ocfs2_cp_xattr_block_to_bucket(struct inode *inode,
size = blocksize - offset;
/* copy all the names and values. */
- if (data_bh)
- target = data_bh->b_data;
memcpy(target + offset, src + offset, size);
/* Init new header now. */
@@ -2588,7 +3343,7 @@ static void ocfs2_cp_xattr_block_to_bucket(struct inode *inode,
xh->xh_free_start = cpu_to_le16(OCFS2_XATTR_BUCKET_SIZE - size);
/* copy all the entries. */
- target = xh_bh->b_data;
+ target = bucket_block(bucket, 0);
offset = offsetof(struct ocfs2_xattr_header, xh_entries);
size = count * sizeof(struct ocfs2_xattr_entry);
memcpy(target + offset, (char *)xb_xh + offset, size);
@@ -2614,73 +3369,47 @@ static void ocfs2_cp_xattr_block_to_bucket(struct inode *inode,
* While if the entry is in index b-tree, "bucket" indicates the
* real place of the xattr.
*/
-static int ocfs2_xattr_update_xattr_search(struct inode *inode,
- struct ocfs2_xattr_search *xs,
- struct buffer_head *old_bh,
- struct buffer_head *new_bh)
+static void ocfs2_xattr_update_xattr_search(struct inode *inode,
+ struct ocfs2_xattr_search *xs,
+ struct buffer_head *old_bh)
{
- int ret = 0;
char *buf = old_bh->b_data;
struct ocfs2_xattr_block *old_xb = (struct ocfs2_xattr_block *)buf;
struct ocfs2_xattr_header *old_xh = &old_xb->xb_attrs.xb_header;
- int i, blocksize = inode->i_sb->s_blocksize;
- u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
-
- xs->bucket.bhs[0] = new_bh;
- get_bh(new_bh);
- xs->bucket.xh = (struct ocfs2_xattr_header *)xs->bucket.bhs[0]->b_data;
- xs->header = xs->bucket.xh;
+ int i;
- xs->base = new_bh->b_data;
+ xs->header = bucket_xh(xs->bucket);
+ xs->base = bucket_block(xs->bucket, 0);
xs->end = xs->base + inode->i_sb->s_blocksize;
- if (!xs->not_found) {
- if (OCFS2_XATTR_BUCKET_SIZE != blocksize) {
- ret = ocfs2_read_blocks(inode,
- xs->bucket.bhs[0]->b_blocknr + 1,
- blk_per_bucket - 1, &xs->bucket.bhs[1],
- 0);
- if (ret) {
- mlog_errno(ret);
- return ret;
- }
-
- }
- i = xs->here - old_xh->xh_entries;
- xs->here = &xs->header->xh_entries[i];
- }
+ if (xs->not_found)
+ return;
- return ret;
+ i = xs->here - old_xh->xh_entries;
+ xs->here = &xs->header->xh_entries[i];
}
static int ocfs2_xattr_create_index_block(struct inode *inode,
- struct ocfs2_xattr_search *xs)
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
- int ret, credits = OCFS2_SUBALLOC_ALLOC;
+ int ret;
u32 bit_off, len;
u64 blkno;
- handle_t *handle;
+ handle_t *handle = ctxt->handle;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_inode_info *oi = OCFS2_I(inode);
- struct ocfs2_alloc_context *data_ac;
- struct buffer_head *xh_bh = NULL, *data_bh = NULL;
struct buffer_head *xb_bh = xs->xattr_bh;
struct ocfs2_xattr_block *xb =
(struct ocfs2_xattr_block *)xb_bh->b_data;
struct ocfs2_xattr_tree_root *xr;
u16 xb_flags = le16_to_cpu(xb->xb_flags);
- u16 bpb = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
mlog(0, "create xattr index block for %llu\n",
(unsigned long long)xb_bh->b_blocknr);
BUG_ON(xb_flags & OCFS2_XATTR_INDEXED);
-
- ret = ocfs2_reserve_clusters(osb, 1, &data_ac);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ BUG_ON(!xs->bucket);
/*
* XXX:
@@ -2689,29 +3418,18 @@ static int ocfs2_xattr_create_index_block(struct inode *inode,
*/
down_write(&oi->ip_alloc_sem);
- /*
- * 3 more credits, one for xattr block update, one for the 1st block
- * of the new xattr bucket and one for the value/data.
- */
- credits += 3;
- handle = ocfs2_start_trans(osb, credits);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out_sem;
- }
-
- ret = ocfs2_journal_access(handle, inode, xb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_xb(handle, inode, xb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
- ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off, &len);
+ ret = __ocfs2_claim_clusters(osb, handle, ctxt->data_ac,
+ 1, 1, &bit_off, &len);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
/*
@@ -2724,51 +3442,23 @@ static int ocfs2_xattr_create_index_block(struct inode *inode,
mlog(0, "allocate 1 cluster from %llu to xattr block\n",
(unsigned long long)blkno);
- xh_bh = sb_getblk(inode->i_sb, blkno);
- if (!xh_bh) {
- ret = -EIO;
+ ret = ocfs2_init_xattr_bucket(xs->bucket, blkno);
+ if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out;
}
- ocfs2_set_new_buffer_uptodate(inode, xh_bh);
-
- ret = ocfs2_journal_access(handle, inode, xh_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, xs->bucket,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
- }
-
- if (bpb > 1) {
- data_bh = sb_getblk(inode->i_sb, blkno + bpb - 1);
- if (!data_bh) {
- ret = -EIO;
- mlog_errno(ret);
- goto out_commit;
- }
-
- ocfs2_set_new_buffer_uptodate(inode, data_bh);
-
- ret = ocfs2_journal_access(handle, inode, data_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
+ goto out;
}
- ocfs2_cp_xattr_block_to_bucket(inode, xb_bh, xh_bh, data_bh);
+ ocfs2_cp_xattr_block_to_bucket(inode, xb_bh, xs->bucket);
+ ocfs2_xattr_bucket_journal_dirty(handle, xs->bucket);
- ocfs2_journal_dirty(handle, xh_bh);
- if (data_bh)
- ocfs2_journal_dirty(handle, data_bh);
-
- ret = ocfs2_xattr_update_xattr_search(inode, xs, xb_bh, xh_bh);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
+ ocfs2_xattr_update_xattr_search(inode, xs, xb_bh);
/* Change from ocfs2_xattr_header to ocfs2_xattr_tree_root */
memset(&xb->xb_attrs, 0, inode->i_sb->s_blocksize -
@@ -2787,24 +3477,10 @@ static int ocfs2_xattr_create_index_block(struct inode *inode,
xb->xb_flags = cpu_to_le16(xb_flags | OCFS2_XATTR_INDEXED);
- ret = ocfs2_journal_dirty(handle, xb_bh);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
-out_commit:
- ocfs2_commit_trans(osb, handle);
-
-out_sem:
- up_write(&oi->ip_alloc_sem);
+ ocfs2_journal_dirty(handle, xb_bh);
out:
- if (data_ac)
- ocfs2_free_alloc_context(data_ac);
-
- brelse(xh_bh);
- brelse(data_bh);
+ up_write(&oi->ip_alloc_sem);
return ret;
}
@@ -2829,29 +3505,18 @@ static int cmp_xe_offset(const void *a, const void *b)
* so that we can spare some space for insertion.
*/
static int ocfs2_defrag_xattr_bucket(struct inode *inode,
+ handle_t *handle,
struct ocfs2_xattr_bucket *bucket)
{
int ret, i;
size_t end, offset, len, value_len;
struct ocfs2_xattr_header *xh;
char *entries, *buf, *bucket_buf = NULL;
- u64 blkno = bucket->bhs[0]->b_blocknr;
- u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+ u64 blkno = bucket_blkno(bucket);
u16 xh_free_start;
size_t blocksize = inode->i_sb->s_blocksize;
- handle_t *handle;
- struct buffer_head **bhs;
struct ocfs2_xattr_entry *xe;
- bhs = kzalloc(sizeof(struct buffer_head *) * blk_per_bucket,
- GFP_NOFS);
- if (!bhs)
- return -ENOMEM;
-
- ret = ocfs2_read_blocks(inode, blkno, blk_per_bucket, bhs, 0);
- if (ret)
- goto out;
-
/*
* In order to make the operation more efficient and generic,
* we copy all the blocks into a contiguous memory and do the
@@ -2865,26 +3530,16 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
}
buf = bucket_buf;
- for (i = 0; i < blk_per_bucket; i++, buf += blocksize)
- memcpy(buf, bhs[i]->b_data, blocksize);
+ for (i = 0; i < bucket->bu_blocks; i++, buf += blocksize)
+ memcpy(buf, bucket_block(bucket, i), blocksize);
- handle = ocfs2_start_trans((OCFS2_SB(inode->i_sb)), blk_per_bucket);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- handle = NULL;
+ ret = ocfs2_xattr_bucket_journal_access(handle, bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret < 0) {
mlog_errno(ret);
goto out;
}
- for (i = 0; i < blk_per_bucket; i++) {
- ret = ocfs2_journal_access(handle, inode, bhs[i],
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret < 0) {
- mlog_errno(ret);
- goto commit;
- }
- }
-
xh = (struct ocfs2_xattr_header *)bucket_buf;
entries = (char *)xh->xh_entries;
xh_free_start = le16_to_cpu(xh->xh_free_start);
@@ -2940,7 +3595,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
"bucket %llu\n", (unsigned long long)blkno);
if (xh_free_start == end)
- goto commit;
+ goto out;
memset(bucket_buf + xh_free_start, 0, end - xh_free_start);
xh->xh_free_start = cpu_to_le16(end);
@@ -2951,169 +3606,94 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
cmp_xe, swap_xe);
buf = bucket_buf;
- for (i = 0; i < blk_per_bucket; i++, buf += blocksize) {
- memcpy(bhs[i]->b_data, buf, blocksize);
- ocfs2_journal_dirty(handle, bhs[i]);
- }
+ for (i = 0; i < bucket->bu_blocks; i++, buf += blocksize)
+ memcpy(bucket_block(bucket, i), buf, blocksize);
+ ocfs2_xattr_bucket_journal_dirty(handle, bucket);
-commit:
- ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out:
-
- if (bhs) {
- for (i = 0; i < blk_per_bucket; i++)
- brelse(bhs[i]);
- }
- kfree(bhs);
-
kfree(bucket_buf);
return ret;
}
/*
- * Move half nums of the xattr bucket in the previous cluster to this new
- * cluster. We only touch the last cluster of the previous extend record.
+ * prev_blkno points to the start of an existing extent. new_blkno
+ * points to a newly allocated extent. Because we know each of our
+ * clusters contains more than bucket, we can easily split one cluster
+ * at a bucket boundary. So we take the last cluster of the existing
+ * extent and split it down the middle. We move the last half of the
+ * buckets in the last cluster of the existing extent over to the new
+ * extent.
+ *
+ * first_bh is the buffer at prev_blkno so we can update the existing
+ * extent's bucket count. header_bh is the bucket were we were hoping
+ * to insert our xattr. If the bucket move places the target in the new
+ * extent, we'll update first_bh and header_bh after modifying the old
+ * extent.
*
- * first_bh is the first buffer_head of a series of bucket in the same
- * extent rec and header_bh is the header of one bucket in this cluster.
- * They will be updated if we move the data header_bh contains to the new
- * cluster. first_hash will be set as the 1st xe's name_hash of the new cluster.
+ * first_hash will be set as the 1st xe's name_hash in the new extent.
*/
static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,
handle_t *handle,
- struct buffer_head **first_bh,
- struct buffer_head **header_bh,
+ struct ocfs2_xattr_bucket *first,
+ struct ocfs2_xattr_bucket *target,
u64 new_blkno,
- u64 prev_blkno,
u32 num_clusters,
u32 *first_hash)
{
- int i, ret, credits;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
- int num_buckets = ocfs2_xattr_buckets_per_cluster(osb);
- int blocksize = inode->i_sb->s_blocksize;
- struct buffer_head *old_bh, *new_bh, *prev_bh, *new_first_bh = NULL;
- struct ocfs2_xattr_header *new_xh;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)((*first_bh)->b_data);
-
- BUG_ON(le16_to_cpu(xh->xh_num_buckets) < num_buckets);
- BUG_ON(OCFS2_XATTR_BUCKET_SIZE == osb->s_clustersize);
-
- prev_bh = *first_bh;
- get_bh(prev_bh);
- xh = (struct ocfs2_xattr_header *)prev_bh->b_data;
+ int ret;
+ struct super_block *sb = inode->i_sb;
+ int blks_per_bucket = ocfs2_blocks_per_xattr_bucket(sb);
+ int num_buckets = ocfs2_xattr_buckets_per_cluster(OCFS2_SB(sb));
+ int to_move = num_buckets / 2;
+ u64 src_blkno;
+ u64 last_cluster_blkno = bucket_blkno(first) +
+ ((num_clusters - 1) * ocfs2_clusters_to_blocks(sb, 1));
- prev_blkno += (num_clusters - 1) * bpc + bpc / 2;
+ BUG_ON(le16_to_cpu(bucket_xh(first)->xh_num_buckets) < num_buckets);
+ BUG_ON(OCFS2_XATTR_BUCKET_SIZE == OCFS2_SB(sb)->s_clustersize);
mlog(0, "move half of xattrs in cluster %llu to %llu\n",
- (unsigned long long)prev_blkno, (unsigned long long)new_blkno);
+ (unsigned long long)last_cluster_blkno, (unsigned long long)new_blkno);
- /*
- * We need to update the 1st half of the new cluster and
- * 1 more for the update of the 1st bucket of the previous
- * extent record.
- */
- credits = bpc / 2 + 1;
- ret = ocfs2_extend_trans(handle, credits);
+ ret = ocfs2_mv_xattr_buckets(inode, handle, bucket_blkno(first),
+ last_cluster_blkno, new_blkno,
+ to_move, first_hash);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, prev_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ /* This is the first bucket that got moved */
+ src_blkno = last_cluster_blkno + (to_move * blks_per_bucket);
- for (i = 0; i < bpc / 2; i++, prev_blkno++, new_blkno++) {
- old_bh = new_bh = NULL;
- new_bh = sb_getblk(inode->i_sb, new_blkno);
- if (!new_bh) {
- ret = -EIO;
- mlog_errno(ret);
- goto out;
- }
+ /*
+ * If the target bucket was part of the moved buckets, we need to
+ * update first and target.
+ */
+ if (bucket_blkno(target) >= src_blkno) {
+ /* Find the block for the new target bucket */
+ src_blkno = new_blkno +
+ (bucket_blkno(target) - src_blkno);
- ocfs2_set_new_buffer_uptodate(inode, new_bh);
+ ocfs2_xattr_bucket_relse(first);
+ ocfs2_xattr_bucket_relse(target);
- ret = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (ret < 0) {
+ /*
+ * These shouldn't fail - the buffers are in the
+ * journal from ocfs2_cp_xattr_bucket().
+ */
+ ret = ocfs2_read_xattr_bucket(first, new_blkno);
+ if (ret) {
mlog_errno(ret);
- brelse(new_bh);
goto out;
}
-
- ret = ocfs2_read_block(inode, prev_blkno, &old_bh);
- if (ret < 0) {
+ ret = ocfs2_read_xattr_bucket(target, src_blkno);
+ if (ret)
mlog_errno(ret);
- brelse(new_bh);
- goto out;
- }
- memcpy(new_bh->b_data, old_bh->b_data, blocksize);
-
- if (i == 0) {
- new_xh = (struct ocfs2_xattr_header *)new_bh->b_data;
- new_xh->xh_num_buckets = cpu_to_le16(num_buckets / 2);
-
- if (first_hash)
- *first_hash = le32_to_cpu(
- new_xh->xh_entries[0].xe_name_hash);
- new_first_bh = new_bh;
- get_bh(new_first_bh);
- }
-
- ocfs2_journal_dirty(handle, new_bh);
-
- if (*header_bh == old_bh) {
- brelse(*header_bh);
- *header_bh = new_bh;
- get_bh(*header_bh);
-
- brelse(*first_bh);
- *first_bh = new_first_bh;
- get_bh(*first_bh);
- }
- brelse(new_bh);
- brelse(old_bh);
}
- le16_add_cpu(&xh->xh_num_buckets, -(num_buckets / 2));
-
- ocfs2_journal_dirty(handle, prev_bh);
out:
- brelse(prev_bh);
- brelse(new_first_bh);
- return ret;
-}
-
-static int ocfs2_read_xattr_bucket(struct inode *inode,
- u64 blkno,
- struct buffer_head **bhs,
- int new)
-{
- int ret = 0;
- u16 i, blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
-
- if (!new)
- return ocfs2_read_blocks(inode, blkno,
- blk_per_bucket, bhs, 0);
-
- for (i = 0; i < blk_per_bucket; i++) {
- bhs[i] = sb_getblk(inode->i_sb, blkno + i);
- if (bhs[i] == NULL) {
- ret = -EIO;
- mlog_errno(ret);
- break;
- }
- ocfs2_set_new_buffer_uptodate(inode, bhs[i]);
- }
-
return ret;
}
@@ -3178,8 +3758,7 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
{
int ret, i;
int count, start, len, name_value_len = 0, xe_len, name_offset = 0;
- u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- struct buffer_head **s_bhs, **t_bhs = NULL;
+ struct ocfs2_xattr_bucket *s_bucket = NULL, *t_bucket = NULL;
struct ocfs2_xattr_header *xh;
struct ocfs2_xattr_entry *xe;
int blocksize = inode->i_sb->s_blocksize;
@@ -3187,47 +3766,52 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
mlog(0, "move some of xattrs from bucket %llu to %llu\n",
(unsigned long long)blk, (unsigned long long)new_blk);
- s_bhs = kcalloc(blk_per_bucket, sizeof(struct buffer_head *), GFP_NOFS);
- if (!s_bhs)
- return -ENOMEM;
-
- ret = ocfs2_read_xattr_bucket(inode, blk, s_bhs, 0);
- if (ret) {
+ s_bucket = ocfs2_xattr_bucket_new(inode);
+ t_bucket = ocfs2_xattr_bucket_new(inode);
+ if (!s_bucket || !t_bucket) {
+ ret = -ENOMEM;
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, s_bhs[0],
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_read_xattr_bucket(s_bucket, blk);
if (ret) {
mlog_errno(ret);
goto out;
}
- t_bhs = kcalloc(blk_per_bucket, sizeof(struct buffer_head *), GFP_NOFS);
- if (!t_bhs) {
- ret = -ENOMEM;
+ ret = ocfs2_xattr_bucket_journal_access(handle, s_bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
goto out;
}
- ret = ocfs2_read_xattr_bucket(inode, new_blk, t_bhs, new_bucket_head);
+ /*
+ * Even if !new_bucket_head, we're overwriting t_bucket. Thus,
+ * there's no need to read it.
+ */
+ ret = ocfs2_init_xattr_bucket(t_bucket, new_blk);
if (ret) {
mlog_errno(ret);
goto out;
}
- for (i = 0; i < blk_per_bucket; i++) {
- ret = ocfs2_journal_access(handle, inode, t_bhs[i],
- new_bucket_head ?
- OCFS2_JOURNAL_ACCESS_CREATE :
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ /*
+ * Hey, if we're overwriting t_bucket, what difference does
+ * ACCESS_CREATE vs ACCESS_WRITE make? See the comment in the
+ * same part of ocfs2_cp_xattr_bucket().
+ */
+ ret = ocfs2_xattr_bucket_journal_access(handle, t_bucket,
+ new_bucket_head ?
+ OCFS2_JOURNAL_ACCESS_CREATE :
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
}
- xh = (struct ocfs2_xattr_header *)s_bhs[0]->b_data;
+ xh = bucket_xh(s_bucket);
count = le16_to_cpu(xh->xh_count);
start = ocfs2_xattr_find_divide_pos(xh);
@@ -3239,10 +3823,10 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
* The hash value is set as one larger than
* that of the last entry in the previous bucket.
*/
- for (i = 0; i < blk_per_bucket; i++)
- memset(t_bhs[i]->b_data, 0, blocksize);
+ for (i = 0; i < t_bucket->bu_blocks; i++)
+ memset(bucket_block(t_bucket, i), 0, blocksize);
- xh = (struct ocfs2_xattr_header *)t_bhs[0]->b_data;
+ xh = bucket_xh(t_bucket);
xh->xh_free_start = cpu_to_le16(blocksize);
xh->xh_entries[0].xe_name_hash = xe->xe_name_hash;
le32_add_cpu(&xh->xh_entries[0].xe_name_hash, 1);
@@ -3251,11 +3835,10 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
}
/* copy the whole bucket to the new first. */
- for (i = 0; i < blk_per_bucket; i++)
- memcpy(t_bhs[i]->b_data, s_bhs[i]->b_data, blocksize);
+ ocfs2_xattr_bucket_copy_data(t_bucket, s_bucket);
/* update the new bucket. */
- xh = (struct ocfs2_xattr_header *)t_bhs[0]->b_data;
+ xh = bucket_xh(t_bucket);
/*
* Calculate the total name/value len and xh_free_start for
@@ -3319,11 +3902,7 @@ set_num_buckets:
else
xh->xh_num_buckets = 0;
- for (i = 0; i < blk_per_bucket; i++) {
- ocfs2_journal_dirty(handle, t_bhs[i]);
- if (ret)
- mlog_errno(ret);
- }
+ ocfs2_xattr_bucket_journal_dirty(handle, t_bucket);
/* store the first_hash of the new bucket. */
if (first_hash)
@@ -3337,29 +3916,18 @@ set_num_buckets:
if (start == count)
goto out;
- xh = (struct ocfs2_xattr_header *)s_bhs[0]->b_data;
+ xh = bucket_xh(s_bucket);
memset(&xh->xh_entries[start], 0,
sizeof(struct ocfs2_xattr_entry) * (count - start));
xh->xh_count = cpu_to_le16(start);
xh->xh_free_start = cpu_to_le16(name_offset);
xh->xh_name_value_len = cpu_to_le16(name_value_len);
- ocfs2_journal_dirty(handle, s_bhs[0]);
- if (ret)
- mlog_errno(ret);
+ ocfs2_xattr_bucket_journal_dirty(handle, s_bucket);
out:
- if (s_bhs) {
- for (i = 0; i < blk_per_bucket; i++)
- brelse(s_bhs[i]);
- }
- kfree(s_bhs);
-
- if (t_bhs) {
- for (i = 0; i < blk_per_bucket; i++)
- brelse(t_bhs[i]);
- }
- kfree(t_bhs);
+ ocfs2_xattr_bucket_free(s_bucket);
+ ocfs2_xattr_bucket_free(t_bucket);
return ret;
}
@@ -3376,10 +3944,8 @@ static int ocfs2_cp_xattr_bucket(struct inode *inode,
u64 t_blkno,
int t_is_new)
{
- int ret, i;
- int blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- int blocksize = inode->i_sb->s_blocksize;
- struct buffer_head **s_bhs, **t_bhs = NULL;
+ int ret;
+ struct ocfs2_xattr_bucket *s_bucket = NULL, *t_bucket = NULL;
BUG_ON(s_blkno == t_blkno);
@@ -3387,92 +3953,115 @@ static int ocfs2_cp_xattr_bucket(struct inode *inode,
(unsigned long long)s_blkno, (unsigned long long)t_blkno,
t_is_new);
- s_bhs = kzalloc(sizeof(struct buffer_head *) * blk_per_bucket,
- GFP_NOFS);
- if (!s_bhs)
- return -ENOMEM;
+ s_bucket = ocfs2_xattr_bucket_new(inode);
+ t_bucket = ocfs2_xattr_bucket_new(inode);
+ if (!s_bucket || !t_bucket) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
- ret = ocfs2_read_xattr_bucket(inode, s_blkno, s_bhs, 0);
+ ret = ocfs2_read_xattr_bucket(s_bucket, s_blkno);
if (ret)
goto out;
- t_bhs = kzalloc(sizeof(struct buffer_head *) * blk_per_bucket,
- GFP_NOFS);
- if (!t_bhs) {
- ret = -ENOMEM;
+ /*
+ * Even if !t_is_new, we're overwriting t_bucket. Thus,
+ * there's no need to read it.
+ */
+ ret = ocfs2_init_xattr_bucket(t_bucket, t_blkno);
+ if (ret)
goto out;
- }
- ret = ocfs2_read_xattr_bucket(inode, t_blkno, t_bhs, t_is_new);
+ /*
+ * Hey, if we're overwriting t_bucket, what difference does
+ * ACCESS_CREATE vs ACCESS_WRITE make? Well, if we allocated a new
+ * cluster to fill, we came here from
+ * ocfs2_mv_xattr_buckets(), and it is really new -
+ * ACCESS_CREATE is required. But we also might have moved data
+ * out of t_bucket before extending back into it.
+ * ocfs2_add_new_xattr_bucket() can do this - its call to
+ * ocfs2_add_new_xattr_cluster() may have created a new extent
+ * and copied out the end of the old extent. Then it re-extends
+ * the old extent back to create space for new xattrs. That's
+ * how we get here, and the bucket isn't really new.
+ */
+ ret = ocfs2_xattr_bucket_journal_access(handle, t_bucket,
+ t_is_new ?
+ OCFS2_JOURNAL_ACCESS_CREATE :
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret)
goto out;
- for (i = 0; i < blk_per_bucket; i++) {
- ret = ocfs2_journal_access(handle, inode, t_bhs[i],
- t_is_new ?
- OCFS2_JOURNAL_ACCESS_CREATE :
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret)
- goto out;
- }
-
- for (i = 0; i < blk_per_bucket; i++) {
- memcpy(t_bhs[i]->b_data, s_bhs[i]->b_data, blocksize);
- ocfs2_journal_dirty(handle, t_bhs[i]);
- }
+ ocfs2_xattr_bucket_copy_data(t_bucket, s_bucket);
+ ocfs2_xattr_bucket_journal_dirty(handle, t_bucket);
out:
- if (s_bhs) {
- for (i = 0; i < blk_per_bucket; i++)
- brelse(s_bhs[i]);
- }
- kfree(s_bhs);
-
- if (t_bhs) {
- for (i = 0; i < blk_per_bucket; i++)
- brelse(t_bhs[i]);
- }
- kfree(t_bhs);
+ ocfs2_xattr_bucket_free(t_bucket);
+ ocfs2_xattr_bucket_free(s_bucket);
return ret;
}
/*
- * Copy one xattr cluster from src_blk to to_blk.
- * The to_blk will become the first bucket header of the cluster, so its
- * xh_num_buckets will be initialized as the bucket num in the cluster.
+ * src_blk points to the start of an existing extent. last_blk points to
+ * last cluster in that extent. to_blk points to a newly allocated
+ * extent. We copy the buckets from the cluster at last_blk to the new
+ * extent. If start_bucket is non-zero, we skip that many buckets before
+ * we start copying. The new extent's xh_num_buckets gets set to the
+ * number of buckets we copied. The old extent's xh_num_buckets shrinks
+ * by the same amount.
*/
-static int ocfs2_cp_xattr_cluster(struct inode *inode,
- handle_t *handle,
- struct buffer_head *first_bh,
- u64 src_blk,
- u64 to_blk,
+static int ocfs2_mv_xattr_buckets(struct inode *inode, handle_t *handle,
+ u64 src_blk, u64 last_blk, u64 to_blk,
+ unsigned int start_bucket,
u32 *first_hash)
{
int i, ret, credits;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
+ int blks_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
int num_buckets = ocfs2_xattr_buckets_per_cluster(osb);
- struct buffer_head *bh = NULL;
- struct ocfs2_xattr_header *xh;
- u64 to_blk_start = to_blk;
+ struct ocfs2_xattr_bucket *old_first, *new_first;
+
+ mlog(0, "mv xattrs from cluster %llu to %llu\n",
+ (unsigned long long)last_blk, (unsigned long long)to_blk);
+
+ BUG_ON(start_bucket >= num_buckets);
+ if (start_bucket) {
+ num_buckets -= start_bucket;
+ last_blk += (start_bucket * blks_per_bucket);
+ }
+
+ /* The first bucket of the original extent */
+ old_first = ocfs2_xattr_bucket_new(inode);
+ /* The first bucket of the new extent */
+ new_first = ocfs2_xattr_bucket_new(inode);
+ if (!old_first || !new_first) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
- mlog(0, "cp xattrs from cluster %llu to %llu\n",
- (unsigned long long)src_blk, (unsigned long long)to_blk);
+ ret = ocfs2_read_xattr_bucket(old_first, src_blk);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
/*
- * We need to update the new cluster and 1 more for the update of
- * the 1st bucket of the previous extent rec.
+ * We need to update the first bucket of the old extent and all
+ * the buckets going to the new extent.
*/
- credits = bpc + 1;
+ credits = ((num_buckets + 1) * blks_per_bucket) +
+ handle->h_buffer_credits;
ret = ocfs2_extend_trans(handle, credits);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, first_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, old_first,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3480,45 +4069,45 @@ static int ocfs2_cp_xattr_cluster(struct inode *inode,
for (i = 0; i < num_buckets; i++) {
ret = ocfs2_cp_xattr_bucket(inode, handle,
- src_blk, to_blk, 1);
+ last_blk + (i * blks_per_bucket),
+ to_blk + (i * blks_per_bucket),
+ 1);
if (ret) {
mlog_errno(ret);
goto out;
}
-
- src_blk += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- to_blk += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
}
- /* update the old bucket header. */
- xh = (struct ocfs2_xattr_header *)first_bh->b_data;
- le16_add_cpu(&xh->xh_num_buckets, -num_buckets);
-
- ocfs2_journal_dirty(handle, first_bh);
-
- /* update the new bucket header. */
- ret = ocfs2_read_block(inode, to_blk_start, &bh);
- if (ret < 0) {
+ /*
+ * Get the new bucket ready before we dirty anything
+ * (This actually shouldn't fail, because we already dirtied
+ * it once in ocfs2_cp_xattr_bucket()).
+ */
+ ret = ocfs2_read_xattr_bucket(new_first, to_blk);
+ if (ret) {
mlog_errno(ret);
goto out;
}
-
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, new_first,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
- xh = (struct ocfs2_xattr_header *)bh->b_data;
- xh->xh_num_buckets = cpu_to_le16(num_buckets);
+ /* Now update the headers */
+ le16_add_cpu(&bucket_xh(old_first)->xh_num_buckets, -num_buckets);
+ ocfs2_xattr_bucket_journal_dirty(handle, old_first);
- ocfs2_journal_dirty(handle, bh);
+ bucket_xh(new_first)->xh_num_buckets = cpu_to_le16(num_buckets);
+ ocfs2_xattr_bucket_journal_dirty(handle, new_first);
if (first_hash)
- *first_hash = le32_to_cpu(xh->xh_entries[0].xe_name_hash);
+ *first_hash = le32_to_cpu(bucket_xh(new_first)->xh_entries[0].xe_name_hash);
+
out:
- brelse(bh);
+ ocfs2_xattr_bucket_free(new_first);
+ ocfs2_xattr_bucket_free(old_first);
return ret;
}
@@ -3534,7 +4123,7 @@ static int ocfs2_divide_xattr_cluster(struct inode *inode,
u32 *first_hash)
{
u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- int ret, credits = 2 * blk_per_bucket;
+ int ret, credits = 2 * blk_per_bucket + handle->h_buffer_credits;
BUG_ON(OCFS2_XATTR_BUCKET_SIZE < OCFS2_SB(inode->i_sb)->s_clustersize);
@@ -3577,43 +4166,49 @@ static int ocfs2_divide_xattr_cluster(struct inode *inode,
*/
static int ocfs2_adjust_xattr_cross_cluster(struct inode *inode,
handle_t *handle,
- struct buffer_head **first_bh,
- struct buffer_head **header_bh,
+ struct ocfs2_xattr_bucket *first,
+ struct ocfs2_xattr_bucket *target,
u64 new_blk,
- u64 prev_blk,
u32 prev_clusters,
u32 *v_start,
int *extend)
{
- int ret = 0;
- int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
+ int ret;
mlog(0, "adjust xattrs from cluster %llu len %u to %llu\n",
- (unsigned long long)prev_blk, prev_clusters,
+ (unsigned long long)bucket_blkno(first), prev_clusters,
(unsigned long long)new_blk);
- if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1)
+ if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1) {
ret = ocfs2_mv_xattr_bucket_cross_cluster(inode,
handle,
- first_bh,
- header_bh,
+ first, target,
new_blk,
- prev_blk,
prev_clusters,
v_start);
- else {
- u64 last_blk = prev_blk + bpc * (prev_clusters - 1);
-
- if (prev_clusters > 1 && (*header_bh)->b_blocknr != last_blk)
- ret = ocfs2_cp_xattr_cluster(inode, handle, *first_bh,
- last_blk, new_blk,
+ if (ret)
+ mlog_errno(ret);
+ } else {
+ /* The start of the last cluster in the first extent */
+ u64 last_blk = bucket_blkno(first) +
+ ((prev_clusters - 1) *
+ ocfs2_clusters_to_blocks(inode->i_sb, 1));
+
+ if (prev_clusters > 1 && bucket_blkno(target) != last_blk) {
+ ret = ocfs2_mv_xattr_buckets(inode, handle,
+ bucket_blkno(first),
+ last_blk, new_blk, 0,
v_start);
- else {
+ if (ret)
+ mlog_errno(ret);
+ } else {
ret = ocfs2_divide_xattr_cluster(inode, handle,
last_blk, new_blk,
v_start);
+ if (ret)
+ mlog_errno(ret);
- if ((*header_bh)->b_blocknr == last_blk && extend)
+ if ((bucket_blkno(target) == last_blk) && extend)
*extend = 0;
}
}
@@ -3639,56 +4234,37 @@ static int ocfs2_adjust_xattr_cross_cluster(struct inode *inode,
*/
static int ocfs2_add_new_xattr_cluster(struct inode *inode,
struct buffer_head *root_bh,
- struct buffer_head **first_bh,
- struct buffer_head **header_bh,
+ struct ocfs2_xattr_bucket *first,
+ struct ocfs2_xattr_bucket *target,
u32 *num_clusters,
u32 prev_cpos,
- u64 prev_blkno,
- int *extend)
+ int *extend,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
- int ret, credits;
+ int ret;
u16 bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
u32 prev_clusters = *num_clusters;
u32 clusters_to_add = 1, bit_off, num_bits, v_start = 0;
u64 block;
- handle_t *handle = NULL;
- struct ocfs2_alloc_context *data_ac = NULL;
- struct ocfs2_alloc_context *meta_ac = NULL;
+ handle_t *handle = ctxt->handle;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_extent_tree et;
mlog(0, "Add new xattr cluster for %llu, previous xattr hash = %u, "
"previous xattr blkno = %llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
- prev_cpos, (unsigned long long)prev_blkno);
+ prev_cpos, (unsigned long long)bucket_blkno(first));
ocfs2_init_xattr_tree_extent_tree(&et, inode, root_bh);
- ret = ocfs2_lock_allocators(inode, &et, clusters_to_add, 0,
- &data_ac, &meta_ac);
- if (ret) {
- mlog_errno(ret);
- goto leave;
- }
-
- credits = ocfs2_calc_extend_credits(osb->sb, et.et_root_el,
- clusters_to_add);
- handle = ocfs2_start_trans(osb, credits);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- handle = NULL;
- mlog_errno(ret);
- goto leave;
- }
-
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_xb(handle, inode, root_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto leave;
}
- ret = __ocfs2_claim_clusters(osb, handle, data_ac, 1,
+ ret = __ocfs2_claim_clusters(osb, handle, ctxt->data_ac, 1,
clusters_to_add, &bit_off, &num_bits);
if (ret < 0) {
if (ret != -ENOSPC)
@@ -3702,7 +4278,7 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
mlog(0, "Allocating %u clusters at block %u for xattr in inode %llu\n",
num_bits, bit_off, (unsigned long long)OCFS2_I(inode)->ip_blkno);
- if (prev_blkno + prev_clusters * bpc == block &&
+ if (bucket_blkno(first) + (prev_clusters * bpc) == block &&
(prev_clusters + num_bits) << osb->s_clustersize_bits <=
OCFS2_MAX_XATTR_TREE_LEAF_SIZE) {
/*
@@ -3721,10 +4297,9 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
} else {
ret = ocfs2_adjust_xattr_cross_cluster(inode,
handle,
- first_bh,
- header_bh,
+ first,
+ target,
block,
- prev_blkno,
prev_clusters,
&v_start,
extend);
@@ -3734,149 +4309,137 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
}
}
- if (handle->h_buffer_credits < credits) {
- /*
- * The journal has been restarted before, and don't
- * have enough space for the insertion, so extend it
- * here.
- */
- ret = ocfs2_extend_trans(handle, credits);
- if (ret) {
- mlog_errno(ret);
- goto leave;
- }
- }
mlog(0, "Insert %u clusters at block %llu for xattr at %u\n",
num_bits, (unsigned long long)block, v_start);
ret = ocfs2_insert_extent(osb, handle, inode, &et, v_start, block,
- num_bits, 0, meta_ac);
+ num_bits, 0, ctxt->meta_ac);
if (ret < 0) {
mlog_errno(ret);
goto leave;
}
ret = ocfs2_journal_dirty(handle, root_bh);
- if (ret < 0) {
+ if (ret < 0)
mlog_errno(ret);
- goto leave;
- }
leave:
- if (handle)
- ocfs2_commit_trans(osb, handle);
- if (data_ac)
- ocfs2_free_alloc_context(data_ac);
- if (meta_ac)
- ocfs2_free_alloc_context(meta_ac);
-
return ret;
}
/*
- * Extend a new xattr bucket and move xattrs to the end one by one until
- * We meet with start_bh. Only move half of the xattrs to the bucket after it.
+ * We are given an extent. 'first' is the bucket at the very front of
+ * the extent. The extent has space for an additional bucket past
+ * bucket_xh(first)->xh_num_buckets. 'target_blkno' is the block number
+ * of the target bucket. We wish to shift every bucket past the target
+ * down one, filling in that additional space. When we get back to the
+ * target, we split the target between itself and the now-empty bucket
+ * at target+1 (aka, target_blkno + blks_per_bucket).
*/
static int ocfs2_extend_xattr_bucket(struct inode *inode,
- struct buffer_head *first_bh,
- struct buffer_head *start_bh,
+ handle_t *handle,
+ struct ocfs2_xattr_bucket *first,
+ u64 target_blk,
u32 num_clusters)
{
int ret, credits;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- u64 start_blk = start_bh->b_blocknr, end_blk;
- u32 num_buckets = num_clusters * ocfs2_xattr_buckets_per_cluster(osb);
- handle_t *handle;
- struct ocfs2_xattr_header *first_xh =
- (struct ocfs2_xattr_header *)first_bh->b_data;
- u16 bucket = le16_to_cpu(first_xh->xh_num_buckets);
+ u64 end_blk;
+ u16 new_bucket = le16_to_cpu(bucket_xh(first)->xh_num_buckets);
mlog(0, "extend xattr bucket in %llu, xattr extend rec starting "
- "from %llu, len = %u\n", (unsigned long long)start_blk,
- (unsigned long long)first_bh->b_blocknr, num_clusters);
+ "from %llu, len = %u\n", (unsigned long long)target_blk,
+ (unsigned long long)bucket_blkno(first), num_clusters);
- BUG_ON(bucket >= num_buckets);
+ /* The extent must have room for an additional bucket */
+ BUG_ON(new_bucket >=
+ (num_clusters * ocfs2_xattr_buckets_per_cluster(osb)));
- end_blk = first_bh->b_blocknr + (bucket - 1) * blk_per_bucket;
+ /* end_blk points to the last existing bucket */
+ end_blk = bucket_blkno(first) + ((new_bucket - 1) * blk_per_bucket);
/*
- * We will touch all the buckets after the start_bh(include it).
- * Add one more bucket and modify the first_bh.
+ * end_blk is the start of the last existing bucket.
+ * Thus, (end_blk - target_blk) covers the target bucket and
+ * every bucket after it up to, but not including, the last
+ * existing bucket. Then we add the last existing bucket, the
+ * new bucket, and the first bucket (3 * blk_per_bucket).
*/
- credits = end_blk - start_blk + 2 * blk_per_bucket + 1;
- handle = ocfs2_start_trans(osb, credits);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- handle = NULL;
+ credits = (end_blk - target_blk) + (3 * blk_per_bucket) +
+ handle->h_buffer_credits;
+ ret = ocfs2_extend_trans(handle, credits);
+ if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, first_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, first,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto commit;
+ goto out;
}
- while (end_blk != start_blk) {
+ while (end_blk != target_blk) {
ret = ocfs2_cp_xattr_bucket(inode, handle, end_blk,
end_blk + blk_per_bucket, 0);
if (ret)
- goto commit;
+ goto out;
end_blk -= blk_per_bucket;
}
- /* Move half of the xattr in start_blk to the next bucket. */
- ret = ocfs2_divide_xattr_bucket(inode, handle, start_blk,
- start_blk + blk_per_bucket, NULL, 0);
+ /* Move half of the xattr in target_blkno to the next bucket. */
+ ret = ocfs2_divide_xattr_bucket(inode, handle, target_blk,
+ target_blk + blk_per_bucket, NULL, 0);
- le16_add_cpu(&first_xh->xh_num_buckets, 1);
- ocfs2_journal_dirty(handle, first_bh);
+ le16_add_cpu(&bucket_xh(first)->xh_num_buckets, 1);
+ ocfs2_xattr_bucket_journal_dirty(handle, first);
-commit:
- ocfs2_commit_trans(osb, handle);
out:
return ret;
}
/*
- * Add new xattr bucket in an extent record and adjust the buckets accordingly.
- * xb_bh is the ocfs2_xattr_block.
- * We will move all the buckets starting from header_bh to the next place. As
- * for this one, half num of its xattrs will be moved to the next one.
+ * Add new xattr bucket in an extent record and adjust the buckets
+ * accordingly. xb_bh is the ocfs2_xattr_block, and target is the
+ * bucket we want to insert into.
+ *
+ * In the easy case, we will move all the buckets after target down by
+ * one. Half of target's xattrs will be moved to the next bucket.
*
- * We will allocate a new cluster if current cluster is full and adjust
- * header_bh and first_bh if the insert place is moved to the new cluster.
+ * If current cluster is full, we'll allocate a new one. This may not
+ * be contiguous. The underlying calls will make sure that there is
+ * space for the insert, shifting buckets around if necessary.
+ * 'target' may be moved by those calls.
*/
static int ocfs2_add_new_xattr_bucket(struct inode *inode,
struct buffer_head *xb_bh,
- struct buffer_head *header_bh)
+ struct ocfs2_xattr_bucket *target,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
- struct ocfs2_xattr_header *first_xh = NULL;
- struct buffer_head *first_bh = NULL;
struct ocfs2_xattr_block *xb =
(struct ocfs2_xattr_block *)xb_bh->b_data;
struct ocfs2_xattr_tree_root *xb_root = &xb->xb_attrs.xb_root;
struct ocfs2_extent_list *el = &xb_root->xt_list;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)header_bh->b_data;
- u32 name_hash = le32_to_cpu(xh->xh_entries[0].xe_name_hash);
- struct super_block *sb = inode->i_sb;
- struct ocfs2_super *osb = OCFS2_SB(sb);
+ u32 name_hash =
+ le32_to_cpu(bucket_xh(target)->xh_entries[0].xe_name_hash);
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
int ret, num_buckets, extend = 1;
u64 p_blkno;
u32 e_cpos, num_clusters;
+ /* The bucket at the front of the extent */
+ struct ocfs2_xattr_bucket *first;
- mlog(0, "Add new xattr bucket starting form %llu\n",
- (unsigned long long)header_bh->b_blocknr);
+ mlog(0, "Add new xattr bucket starting from %llu\n",
+ (unsigned long long)bucket_blkno(target));
- /*
- * Add refrence for header_bh here because it may be
- * changed in ocfs2_add_new_xattr_cluster and we need
- * to free it in the end.
- */
- get_bh(header_bh);
+ /* The first bucket of the original extent */
+ first = ocfs2_xattr_bucket_new(inode);
+ if (!first) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
ret = ocfs2_xattr_get_rec(inode, name_hash, &p_blkno, &e_cpos,
&num_clusters, el);
@@ -3885,40 +4448,45 @@ static int ocfs2_add_new_xattr_bucket(struct inode *inode,
goto out;
}
- ret = ocfs2_read_block(inode, p_blkno, &first_bh);
+ ret = ocfs2_read_xattr_bucket(first, p_blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
num_buckets = ocfs2_xattr_buckets_per_cluster(osb) * num_clusters;
- first_xh = (struct ocfs2_xattr_header *)first_bh->b_data;
-
- if (num_buckets == le16_to_cpu(first_xh->xh_num_buckets)) {
+ if (num_buckets == le16_to_cpu(bucket_xh(first)->xh_num_buckets)) {
+ /*
+ * This can move first+target if the target bucket moves
+ * to the new extent.
+ */
ret = ocfs2_add_new_xattr_cluster(inode,
xb_bh,
- &first_bh,
- &header_bh,
+ first,
+ target,
&num_clusters,
e_cpos,
- p_blkno,
- &extend);
+ &extend,
+ ctxt);
if (ret) {
mlog_errno(ret);
goto out;
}
}
- if (extend)
+ if (extend) {
ret = ocfs2_extend_xattr_bucket(inode,
- first_bh,
- header_bh,
+ ctxt->handle,
+ first,
+ bucket_blkno(target),
num_clusters);
- if (ret)
- mlog_errno(ret);
+ if (ret)
+ mlog_errno(ret);
+ }
+
out:
- brelse(first_bh);
- brelse(header_bh);
+ ocfs2_xattr_bucket_free(first);
+
return ret;
}
@@ -3929,7 +4497,7 @@ static inline char *ocfs2_xattr_bucket_get_val(struct inode *inode,
int block_off = offs >> inode->i_sb->s_blocksize_bits;
offs = offs % inode->i_sb->s_blocksize;
- return bucket->bhs[block_off]->b_data + offs;
+ return bucket_block(bucket, block_off) + offs;
}
/*
@@ -3984,7 +4552,7 @@ static void ocfs2_xattr_set_entry_normal(struct inode *inode,
xe->xe_value_size = 0;
val = ocfs2_xattr_bucket_get_val(inode,
- &xs->bucket, offs);
+ xs->bucket, offs);
memset(val + OCFS2_XATTR_SIZE(name_len), 0,
size - OCFS2_XATTR_SIZE(name_len));
if (OCFS2_XATTR_SIZE(xi->value_len) > 0)
@@ -4062,8 +4630,7 @@ set_new_name_value:
xh->xh_free_start = cpu_to_le16(offs);
}
- val = ocfs2_xattr_bucket_get_val(inode,
- &xs->bucket, offs - size);
+ val = ocfs2_xattr_bucket_get_val(inode, xs->bucket, offs - size);
xe->xe_name_offset = cpu_to_le16(offs - size);
memset(val, 0, size);
@@ -4079,125 +4646,45 @@ set_new_name_value:
return;
}
-static int ocfs2_xattr_bucket_handle_journal(struct inode *inode,
- handle_t *handle,
- struct ocfs2_xattr_search *xs,
- struct buffer_head **bhs,
- u16 bh_num)
-{
- int ret = 0, off, block_off;
- struct ocfs2_xattr_entry *xe = xs->here;
-
- /*
- * First calculate all the blocks we should journal_access
- * and journal_dirty. The first block should always be touched.
- */
- ret = ocfs2_journal_dirty(handle, bhs[0]);
- if (ret)
- mlog_errno(ret);
-
- /* calc the data. */
- off = le16_to_cpu(xe->xe_name_offset);
- block_off = off >> inode->i_sb->s_blocksize_bits;
- ret = ocfs2_journal_dirty(handle, bhs[block_off]);
- if (ret)
- mlog_errno(ret);
-
- return ret;
-}
-
/*
* Set the xattr entry in the specified bucket.
* The bucket is indicated by xs->bucket and it should have the enough
* space for the xattr insertion.
*/
static int ocfs2_xattr_set_entry_in_bucket(struct inode *inode,
+ handle_t *handle,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs,
u32 name_hash,
int local)
{
- int i, ret;
- handle_t *handle = NULL;
- u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ int ret;
+ u64 blkno;
mlog(0, "Set xattr entry len = %lu index = %d in bucket %llu\n",
(unsigned long)xi->value_len, xi->name_index,
- (unsigned long long)xs->bucket.bhs[0]->b_blocknr);
+ (unsigned long long)bucket_blkno(xs->bucket));
- if (!xs->bucket.bhs[1]) {
- ret = ocfs2_read_blocks(inode,
- xs->bucket.bhs[0]->b_blocknr + 1,
- blk_per_bucket - 1, &xs->bucket.bhs[1],
- 0);
+ if (!xs->bucket->bu_bhs[1]) {
+ blkno = bucket_blkno(xs->bucket);
+ ocfs2_xattr_bucket_relse(xs->bucket);
+ ret = ocfs2_read_xattr_bucket(xs->bucket, blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
}
- handle = ocfs2_start_trans(osb, blk_per_bucket);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- handle = NULL;
+ ret = ocfs2_xattr_bucket_journal_access(handle, xs->bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret < 0) {
mlog_errno(ret);
goto out;
}
- for (i = 0; i < blk_per_bucket; i++) {
- ret = ocfs2_journal_access(handle, inode, xs->bucket.bhs[i],
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
- }
-
ocfs2_xattr_set_entry_normal(inode, xi, xs, name_hash, local);
+ ocfs2_xattr_bucket_journal_dirty(handle, xs->bucket);
- /*Only dirty the blocks we have touched in set xattr. */
- ret = ocfs2_xattr_bucket_handle_journal(inode, handle, xs,
- xs->bucket.bhs, blk_per_bucket);
- if (ret)
- mlog_errno(ret);
-out:
- ocfs2_commit_trans(osb, handle);
-
- return ret;
-}
-
-static int ocfs2_xattr_value_update_size(struct inode *inode,
- struct buffer_head *xe_bh,
- struct ocfs2_xattr_entry *xe,
- u64 new_size)
-{
- int ret;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- handle_t *handle = NULL;
-
- handle = ocfs2_start_trans(osb, 1);
- if (IS_ERR(handle)) {
- ret = -ENOMEM;
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_journal_access(handle, inode, xe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret < 0) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- xe->xe_value_size = cpu_to_le64(new_size);
-
- ret = ocfs2_journal_dirty(handle, xe_bh);
- if (ret < 0)
- mlog_errno(ret);
-
-out_commit:
- ocfs2_commit_trans(osb, handle);
out:
return ret;
}
@@ -4210,18 +4697,19 @@ out:
* Copy the new updated xe and xe_value_root to new_xe and new_xv if needed.
*/
static int ocfs2_xattr_bucket_value_truncate(struct inode *inode,
- struct buffer_head *header_bh,
+ struct ocfs2_xattr_bucket *bucket,
int xe_off,
- int len)
+ int len,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret, offset;
u64 value_blk;
- struct buffer_head *value_bh = NULL;
- struct ocfs2_xattr_value_root *xv;
struct ocfs2_xattr_entry *xe;
- struct ocfs2_xattr_header *xh =
- (struct ocfs2_xattr_header *)header_bh->b_data;
+ struct ocfs2_xattr_header *xh = bucket_xh(bucket);
size_t blocksize = inode->i_sb->s_blocksize;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_access = ocfs2_journal_access,
+ };
xe = &xh->xh_entries[xe_off];
@@ -4234,49 +4722,58 @@ static int ocfs2_xattr_bucket_value_truncate(struct inode *inode,
/* We don't allow ocfs2_xattr_value to be stored in different block. */
BUG_ON(value_blk != (offset + OCFS2_XATTR_ROOT_SIZE - 1) / blocksize);
- value_blk += header_bh->b_blocknr;
- ret = ocfs2_read_block(inode, value_blk, &value_bh);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ vb.vb_bh = bucket->bu_bhs[value_blk];
+ BUG_ON(!vb.vb_bh);
- xv = (struct ocfs2_xattr_value_root *)
- (value_bh->b_data + offset % blocksize);
+ vb.vb_xv = (struct ocfs2_xattr_value_root *)
+ (vb.vb_bh->b_data + offset % blocksize);
- mlog(0, "truncate %u in xattr bucket %llu to %d bytes.\n",
- xe_off, (unsigned long long)header_bh->b_blocknr, len);
- ret = ocfs2_xattr_value_truncate(inode, value_bh, xv, len);
+ ret = ocfs2_xattr_bucket_journal_access(ctxt->handle, bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_xattr_value_update_size(inode, header_bh, xe, len);
+ /*
+ * From here on out we have to dirty the bucket. The generic
+ * value calls only modify one of the bucket's bhs, but we need
+ * to send the bucket at once. So if they error, they *could* have
+ * modified something. We have to assume they did, and dirty
+ * the whole bucket. This leaves us in a consistent state.
+ */
+ mlog(0, "truncate %u in xattr bucket %llu to %d bytes.\n",
+ xe_off, (unsigned long long)bucket_blkno(bucket), len);
+ ret = ocfs2_xattr_value_truncate(inode, &vb, len, ctxt);
if (ret) {
mlog_errno(ret);
- goto out;
+ goto out_dirty;
}
+ xe->xe_value_size = cpu_to_le64(len);
+
+out_dirty:
+ ocfs2_xattr_bucket_journal_dirty(ctxt->handle, bucket);
+
out:
- brelse(value_bh);
return ret;
}
static int ocfs2_xattr_bucket_value_truncate_xs(struct inode *inode,
- struct ocfs2_xattr_search *xs,
- int len)
+ struct ocfs2_xattr_search *xs,
+ int len,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret, offset;
struct ocfs2_xattr_entry *xe = xs->here;
struct ocfs2_xattr_header *xh = (struct ocfs2_xattr_header *)xs->base;
- BUG_ON(!xs->bucket.bhs[0] || !xe || ocfs2_xattr_is_local(xe));
+ BUG_ON(!xs->bucket->bu_bhs[0] || !xe || ocfs2_xattr_is_local(xe));
offset = xe - xh->xh_entries;
- ret = ocfs2_xattr_bucket_value_truncate(inode, xs->bucket.bhs[0],
- offset, len);
+ ret = ocfs2_xattr_bucket_value_truncate(inode, xs->bucket,
+ offset, len, ctxt);
if (ret)
mlog_errno(ret);
@@ -4284,6 +4781,7 @@ static int ocfs2_xattr_bucket_value_truncate_xs(struct inode *inode,
}
static int ocfs2_xattr_bucket_set_value_outside(struct inode *inode,
+ handle_t *handle,
struct ocfs2_xattr_search *xs,
char *val,
int value_len)
@@ -4299,7 +4797,8 @@ static int ocfs2_xattr_bucket_set_value_outside(struct inode *inode,
xv = (struct ocfs2_xattr_value_root *)(xs->base + offset);
- return __ocfs2_xattr_set_value_outside(inode, xv, val, value_len);
+ return __ocfs2_xattr_set_value_outside(inode, handle,
+ xv, val, value_len);
}
static int ocfs2_rm_xattr_cluster(struct inode *inode,
@@ -4343,15 +4842,15 @@ static int ocfs2_rm_xattr_cluster(struct inode *inode,
}
}
- handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
+ handle = ocfs2_start_trans(osb, ocfs2_remove_extent_credits(osb->sb));
if (IS_ERR(handle)) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_xb(handle, inode, root_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -4392,26 +4891,19 @@ out:
}
static void ocfs2_xattr_bucket_remove_xs(struct inode *inode,
+ handle_t *handle,
struct ocfs2_xattr_search *xs)
{
- handle_t *handle = NULL;
- struct ocfs2_xattr_header *xh = xs->bucket.xh;
+ struct ocfs2_xattr_header *xh = bucket_xh(xs->bucket);
struct ocfs2_xattr_entry *last = &xh->xh_entries[
le16_to_cpu(xh->xh_count) - 1];
int ret = 0;
- handle = ocfs2_start_trans((OCFS2_SB(inode->i_sb)), 1);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- return;
- }
-
- ret = ocfs2_journal_access(handle, inode, xs->bucket.bhs[0],
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_xattr_bucket_journal_access(handle, xs->bucket,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ return;
}
/* Remove the old entry. */
@@ -4420,11 +4912,7 @@ static void ocfs2_xattr_bucket_remove_xs(struct inode *inode,
memset(last, 0, sizeof(struct ocfs2_xattr_entry));
le16_add_cpu(&xh->xh_count, -1);
- ret = ocfs2_journal_dirty(handle, xs->bucket.bhs[0]);
- if (ret < 0)
- mlog_errno(ret);
-out_commit:
- ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
+ ocfs2_xattr_bucket_journal_dirty(handle, xs->bucket);
}
/*
@@ -4440,7 +4928,8 @@ out_commit:
*/
static int ocfs2_xattr_set_in_bucket(struct inode *inode,
struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs)
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret, local = 1;
size_t value_len;
@@ -4468,7 +4957,8 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
value_len = 0;
ret = ocfs2_xattr_bucket_value_truncate_xs(inode, xs,
- value_len);
+ value_len,
+ ctxt);
if (ret)
goto out;
@@ -4488,7 +4978,8 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
xi->value_len = OCFS2_XATTR_ROOT_SIZE;
}
- ret = ocfs2_xattr_set_entry_in_bucket(inode, xi, xs, name_hash, local);
+ ret = ocfs2_xattr_set_entry_in_bucket(inode, ctxt->handle, xi, xs,
+ name_hash, local);
if (ret) {
mlog_errno(ret);
goto out;
@@ -4499,7 +4990,7 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
/* allocate the space now for the outside block storage. */
ret = ocfs2_xattr_bucket_value_truncate_xs(inode, xs,
- value_len);
+ value_len, ctxt);
if (ret) {
mlog_errno(ret);
@@ -4509,13 +5000,14 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
* storage and we have allocated xattr already,
* so need to remove it.
*/
- ocfs2_xattr_bucket_remove_xs(inode, xs);
+ ocfs2_xattr_bucket_remove_xs(inode, ctxt->handle, xs);
}
goto out;
}
set_value_outside:
- ret = ocfs2_xattr_bucket_set_value_outside(inode, xs, val, value_len);
+ ret = ocfs2_xattr_bucket_set_value_outside(inode, ctxt->handle,
+ xs, val, value_len);
out:
return ret;
}
@@ -4530,7 +5022,7 @@ static int ocfs2_check_xattr_bucket_collision(struct inode *inode,
struct ocfs2_xattr_bucket *bucket,
const char *name)
{
- struct ocfs2_xattr_header *xh = bucket->xh;
+ struct ocfs2_xattr_header *xh = bucket_xh(bucket);
u32 name_hash = ocfs2_xattr_name_hash(inode, name, strlen(name));
if (name_hash != le32_to_cpu(xh->xh_entries[0].xe_name_hash))
@@ -4540,7 +5032,7 @@ static int ocfs2_check_xattr_bucket_collision(struct inode *inode,
xh->xh_entries[0].xe_name_hash) {
mlog(ML_ERROR, "Too much hash collision in xattr bucket %llu, "
"hash = %u\n",
- (unsigned long long)bucket->bhs[0]->b_blocknr,
+ (unsigned long long)bucket_blkno(bucket),
le32_to_cpu(xh->xh_entries[0].xe_name_hash));
return -ENOSPC;
}
@@ -4550,16 +5042,16 @@ static int ocfs2_check_xattr_bucket_collision(struct inode *inode,
static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs)
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
struct ocfs2_xattr_header *xh;
struct ocfs2_xattr_entry *xe;
u16 count, header_size, xh_free_start;
- int i, free, max_free, need, old;
+ int free, max_free, need, old;
size_t value_size = 0, name_len = strlen(xi->name);
size_t blocksize = inode->i_sb->s_blocksize;
int ret, allocation = 0;
- u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
mlog_entry("Set xattr %s in xattr index block\n", xi->name);
@@ -4574,7 +5066,7 @@ try_again:
mlog_bug_on_msg(header_size > blocksize, "bucket %llu has header size "
"of %u which exceed block size\n",
- (unsigned long long)xs->bucket.bhs[0]->b_blocknr,
+ (unsigned long long)bucket_blkno(xs->bucket),
header_size);
if (xi->value && xi->value_len > OCFS2_XATTR_INLINE_SIZE)
@@ -4614,11 +5106,13 @@ try_again:
mlog(0, "xs->not_found = %d, in xattr bucket %llu: free = %d, "
"need = %d, max_free = %d, xh_free_start = %u, xh_name_value_len ="
" %u\n", xs->not_found,
- (unsigned long long)xs->bucket.bhs[0]->b_blocknr,
+ (unsigned long long)bucket_blkno(xs->bucket),
free, need, max_free, le16_to_cpu(xh->xh_free_start),
le16_to_cpu(xh->xh_name_value_len));
- if (free < need || count == ocfs2_xattr_max_xe_in_bucket(inode->i_sb)) {
+ if (free < need ||
+ (xs->not_found &&
+ count == ocfs2_xattr_max_xe_in_bucket(inode->i_sb))) {
if (need <= max_free &&
count < ocfs2_xattr_max_xe_in_bucket(inode->i_sb)) {
/*
@@ -4626,7 +5120,8 @@ try_again:
* name/value will be moved, the xe shouldn't be changed
* in xs.
*/
- ret = ocfs2_defrag_xattr_bucket(inode, &xs->bucket);
+ ret = ocfs2_defrag_xattr_bucket(inode, ctxt->handle,
+ xs->bucket);
if (ret) {
mlog_errno(ret);
goto out;
@@ -4658,7 +5153,7 @@ try_again:
* add a new bucket for the insert.
*/
ret = ocfs2_check_xattr_bucket_collision(inode,
- &xs->bucket,
+ xs->bucket,
xi->name);
if (ret) {
mlog_errno(ret);
@@ -4667,17 +5162,21 @@ try_again:
ret = ocfs2_add_new_xattr_bucket(inode,
xs->xattr_bh,
- xs->bucket.bhs[0]);
+ xs->bucket,
+ ctxt);
if (ret) {
mlog_errno(ret);
goto out;
}
- for (i = 0; i < blk_per_bucket; i++)
- brelse(xs->bucket.bhs[i]);
-
- memset(&xs->bucket, 0, sizeof(xs->bucket));
-
+ /*
+ * ocfs2_add_new_xattr_bucket() will have updated
+ * xs->bucket if it moved, but it will not have updated
+ * any of the other search fields. Thus, we drop it and
+ * re-search. Everything should be cached, so it'll be
+ * quick.
+ */
+ ocfs2_xattr_bucket_relse(xs->bucket);
ret = ocfs2_xattr_index_block_find(inode, xs->xattr_bh,
xi->name_index,
xi->name, xs);
@@ -4689,7 +5188,7 @@ try_again:
}
xattr_set:
- ret = ocfs2_xattr_set_in_bucket(inode, xi, xs);
+ ret = ocfs2_xattr_set_in_bucket(inode, xi, xs, ctxt);
out:
mlog_exit(ret);
return ret;
@@ -4700,24 +5199,41 @@ static int ocfs2_delete_xattr_in_bucket(struct inode *inode,
void *para)
{
int ret = 0;
- struct ocfs2_xattr_header *xh = bucket->xh;
+ struct ocfs2_xattr_header *xh = bucket_xh(bucket);
u16 i;
struct ocfs2_xattr_entry *xe;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct ocfs2_xattr_set_ctxt ctxt = {NULL, NULL,};
+ int credits = ocfs2_remove_extent_credits(osb->sb) +
+ ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+
+
+ ocfs2_init_dealloc_ctxt(&ctxt.dealloc);
for (i = 0; i < le16_to_cpu(xh->xh_count); i++) {
xe = &xh->xh_entries[i];
if (ocfs2_xattr_is_local(xe))
continue;
- ret = ocfs2_xattr_bucket_value_truncate(inode,
- bucket->bhs[0],
- i, 0);
+ ctxt.handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(ctxt.handle)) {
+ ret = PTR_ERR(ctxt.handle);
+ mlog_errno(ret);
+ break;
+ }
+
+ ret = ocfs2_xattr_bucket_value_truncate(inode, bucket,
+ i, 0, &ctxt);
+
+ ocfs2_commit_trans(osb, ctxt.handle);
if (ret) {
mlog_errno(ret);
break;
}
}
+ ocfs2_schedule_truncate_log_flush(osb, 1);
+ ocfs2_run_deallocs(osb, &ctxt.dealloc);
return ret;
}
@@ -4768,6 +5284,74 @@ out:
}
/*
+ * 'security' attributes support
+ */
+static size_t ocfs2_xattr_security_list(struct inode *inode, char *list,
+ size_t list_size, const char *name,
+ size_t name_len)
+{
+ const size_t prefix_len = XATTR_SECURITY_PREFIX_LEN;
+ const size_t total_len = prefix_len + name_len + 1;
+
+ if (list && total_len <= list_size) {
+ memcpy(list, XATTR_SECURITY_PREFIX, prefix_len);
+ memcpy(list + prefix_len, name, name_len);
+ list[prefix_len + name_len] = '\0';
+ }
+ return total_len;
+}
+
+static int ocfs2_xattr_security_get(struct inode *inode, const char *name,
+ void *buffer, size_t size)
+{
+ if (strcmp(name, "") == 0)
+ return -EINVAL;
+ return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_SECURITY, name,
+ buffer, size);
+}
+
+static int ocfs2_xattr_security_set(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+{
+ if (strcmp(name, "") == 0)
+ return -EINVAL;
+
+ return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY, name, value,
+ size, flags);
+}
+
+int ocfs2_init_security_get(struct inode *inode,
+ struct inode *dir,
+ struct ocfs2_security_xattr_info *si)
+{
+ /* check whether ocfs2 support feature xattr */
+ if (!ocfs2_supports_xattr(OCFS2_SB(dir->i_sb)))
+ return -EOPNOTSUPP;
+ return security_inode_init_security(inode, dir, &si->name, &si->value,
+ &si->value_len);
+}
+
+int ocfs2_init_security_set(handle_t *handle,
+ struct inode *inode,
+ struct buffer_head *di_bh,
+ struct ocfs2_security_xattr_info *si,
+ struct ocfs2_alloc_context *xattr_ac,
+ struct ocfs2_alloc_context *data_ac)
+{
+ return ocfs2_xattr_set_handle(handle, inode, di_bh,
+ OCFS2_XATTR_INDEX_SECURITY,
+ si->name, si->value, si->value_len, 0,
+ xattr_ac, data_ac);
+}
+
+struct xattr_handler ocfs2_xattr_security_handler = {
+ .prefix = XATTR_SECURITY_PREFIX,
+ .list = ocfs2_xattr_security_list,
+ .get = ocfs2_xattr_security_get,
+ .set = ocfs2_xattr_security_set,
+};
+
+/*
* 'trusted' attributes support
*/
static size_t ocfs2_xattr_trusted_list(struct inode *inode, char *list,
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index 1d8314c7656..5a1ebc789f7 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -30,13 +30,58 @@ enum ocfs2_xattr_type {
OCFS2_XATTR_MAX
};
+struct ocfs2_security_xattr_info {
+ int enable;
+ char *name;
+ void *value;
+ size_t value_len;
+};
+
extern struct xattr_handler ocfs2_xattr_user_handler;
extern struct xattr_handler ocfs2_xattr_trusted_handler;
+extern struct xattr_handler ocfs2_xattr_security_handler;
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+extern struct xattr_handler ocfs2_xattr_acl_access_handler;
+extern struct xattr_handler ocfs2_xattr_acl_default_handler;
+#endif
extern struct xattr_handler *ocfs2_xattr_handlers[];
ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
+int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
+ const char *, void *, size_t);
int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
size_t, int);
+int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
+ int, const char *, const void *, size_t, int,
+ struct ocfs2_alloc_context *,
+ struct ocfs2_alloc_context *);
int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
+int ocfs2_init_security_get(struct inode *, struct inode *,
+ struct ocfs2_security_xattr_info *);
+int ocfs2_init_security_set(handle_t *, struct inode *,
+ struct buffer_head *,
+ struct ocfs2_security_xattr_info *,
+ struct ocfs2_alloc_context *,
+ struct ocfs2_alloc_context *);
+int ocfs2_calc_security_init(struct inode *,
+ struct ocfs2_security_xattr_info *,
+ int *, int *, struct ocfs2_alloc_context **);
+int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
+ int, struct ocfs2_security_xattr_info *,
+ int *, int *, struct ocfs2_alloc_context **);
+
+/*
+ * xattrs can live inside an inode, as part of an external xattr block,
+ * or inside an xattr bucket, which is the leaf of a tree rooted in an
+ * xattr block. Some of the xattr calls, especially the value setting
+ * functions, want to treat each of these locations as equal. Let's wrap
+ * them in a structure that we can pass around instead of raw buffer_heads.
+ */
+struct ocfs2_xattr_value_buf {
+ struct buffer_head *vb_bh;
+ ocfs2_journal_access_func vb_access;
+ struct ocfs2_xattr_value_root *vb_xv;
+};
+
#endif /* OCFS2_XATTR_H */
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index 6afe57c84f8..633e9dc972b 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -39,7 +39,6 @@ struct inode *omfs_new_inode(struct inode *dir, int mode)
inode->i_mode = mode;
inode->i_uid = current_fsuid();
inode->i_gid = current_fsgid();
- inode->i_blocks = 0;
inode->i_mapping->a_ops = &omfs_aops;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
diff --git a/fs/open.c b/fs/open.c
index 1cd7d40e999..d882fd2351d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -412,7 +412,7 @@ asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len)
if (((offset + len) > inode->i_sb->s_maxbytes) || ((offset + len) < 0))
goto out_fput;
- if (inode->i_op && inode->i_op->fallocate)
+ if (inode->i_op->fallocate)
ret = inode->i_op->fallocate(inode, mode, offset, len);
else
ret = -EOPNOTSUPP;
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index d41bdc784de..ffcd04f0012 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -256,9 +256,6 @@ found:
break;
}
- inode->i_gid = 0;
- inode->i_uid = 0;
-
d_add(dentry, inode);
return NULL;
}
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 6d5b213b8a9..5198ada6739 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -384,9 +384,9 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
dname = dev_name(ddev);
if (isdigit(dname[strlen(dname) - 1]))
- snprintf(pdev->bus_id, BUS_ID_SIZE, "%sp%d", dname, partno);
+ dev_set_name(pdev, "%sp%d", dname, partno);
else
- snprintf(pdev->bus_id, BUS_ID_SIZE, "%s%d", dname, partno);
+ dev_set_name(pdev, "%s%d", dname, partno);
device_initialize(pdev);
pdev->class = &block_class;
@@ -447,16 +447,11 @@ void register_disk(struct gendisk *disk)
struct block_device *bdev;
struct disk_part_iter piter;
struct hd_struct *part;
- char *s;
int err;
ddev->parent = disk->driverfs_dev;
- strlcpy(ddev->bus_id, disk->disk_name, BUS_ID_SIZE);
- /* ewww... some of these buggers have / in the name... */
- s = strchr(ddev->bus_id, '/');
- if (s)
- *s = '!';
+ dev_set_name(ddev, disk->disk_name);
/* delay uevents, until we scanned partition table */
ddev->uevent_suppress = 1;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index cad92c1ac2b..0c9de19a163 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -65,6 +65,7 @@
#include <linux/mm.h>
#include <linux/rcupdate.h>
#include <linux/kallsyms.h>
+#include <linux/stacktrace.h>
#include <linux/resource.h>
#include <linux/module.h>
#include <linux/mount.h>
@@ -109,25 +110,22 @@ struct pid_entry {
.op = OP, \
}
-#define DIR(NAME, MODE, OTYPE) \
- NOD(NAME, (S_IFDIR|(MODE)), \
- &proc_##OTYPE##_inode_operations, &proc_##OTYPE##_operations, \
- {} )
-#define LNK(NAME, OTYPE) \
+#define DIR(NAME, MODE, iops, fops) \
+ NOD(NAME, (S_IFDIR|(MODE)), &iops, &fops, {} )
+#define LNK(NAME, get_link) \
NOD(NAME, (S_IFLNK|S_IRWXUGO), \
&proc_pid_link_inode_operations, NULL, \
- { .proc_get_link = &proc_##OTYPE##_link } )
-#define REG(NAME, MODE, OTYPE) \
- NOD(NAME, (S_IFREG|(MODE)), NULL, \
- &proc_##OTYPE##_operations, {})
-#define INF(NAME, MODE, OTYPE) \
+ { .proc_get_link = get_link } )
+#define REG(NAME, MODE, fops) \
+ NOD(NAME, (S_IFREG|(MODE)), NULL, &fops, {})
+#define INF(NAME, MODE, read) \
NOD(NAME, (S_IFREG|(MODE)), \
NULL, &proc_info_file_operations, \
- { .proc_read = &proc_##OTYPE } )
-#define ONE(NAME, MODE, OTYPE) \
+ { .proc_read = read } )
+#define ONE(NAME, MODE, show) \
NOD(NAME, (S_IFREG|(MODE)), \
NULL, &proc_single_file_operations, \
- { .proc_show = &proc_##OTYPE } )
+ { .proc_show = show } )
/*
* Count the number of hardlinks for the pid_entry table, excluding the .
@@ -308,9 +306,9 @@ static int proc_pid_auxv(struct task_struct *task, char *buffer)
struct mm_struct *mm = get_task_mm(task);
if (mm) {
unsigned int nwords = 0;
- do
+ do {
nwords += 2;
- while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
+ } while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
res = nwords * sizeof(mm->saved_auxv[0]);
if (res > PAGE_SIZE)
res = PAGE_SIZE;
@@ -340,6 +338,37 @@ static int proc_pid_wchan(struct task_struct *task, char *buffer)
}
#endif /* CONFIG_KALLSYMS */
+#ifdef CONFIG_STACKTRACE
+
+#define MAX_STACK_TRACE_DEPTH 64
+
+static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
+{
+ struct stack_trace trace;
+ unsigned long *entries;
+ int i;
+
+ entries = kmalloc(MAX_STACK_TRACE_DEPTH * sizeof(*entries), GFP_KERNEL);
+ if (!entries)
+ return -ENOMEM;
+
+ trace.nr_entries = 0;
+ trace.max_entries = MAX_STACK_TRACE_DEPTH;
+ trace.entries = entries;
+ trace.skip = 0;
+ save_stack_trace_tsk(task, &trace);
+
+ for (i = 0; i < trace.nr_entries; i++) {
+ seq_printf(m, "[<%p>] %pS\n",
+ (void *)entries[i], (void *)entries[i]);
+ }
+ kfree(entries);
+
+ return 0;
+}
+#endif
+
#ifdef CONFIG_SCHEDSTATS
/*
* Provides /proc/PID/schedstat
@@ -1186,8 +1215,6 @@ static int sched_show(struct seq_file *m, void *v)
struct inode *inode = m->private;
struct task_struct *p;
- WARN_ON(!inode);
-
p = get_proc_task(inode);
if (!p)
return -ESRCH;
@@ -1205,8 +1232,6 @@ sched_write(struct file *file, const char __user *buf,
struct inode *inode = file->f_path.dentry->d_inode;
struct task_struct *p;
- WARN_ON(!inode);
-
p = get_proc_task(inode);
if (!p)
return -ESRCH;
@@ -1426,8 +1451,6 @@ static struct inode *proc_pid_make_inode(struct super_block * sb, struct task_st
if (!ei->pid)
goto out_unlock;
- inode->i_uid = 0;
- inode->i_gid = 0;
if (task_dumpable(task)) {
rcu_read_lock();
cred = __task_cred(task);
@@ -1976,13 +1999,11 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
const struct pid_entry *ents,
unsigned int nents)
{
- struct inode *inode;
struct dentry *error;
struct task_struct *task = get_proc_task(dir);
const struct pid_entry *p, *last;
error = ERR_PTR(-ENOENT);
- inode = NULL;
if (!task)
goto out_no_task;
@@ -2138,12 +2159,12 @@ static const struct file_operations proc_pid_attr_operations = {
};
static const struct pid_entry attr_dir_stuff[] = {
- REG("current", S_IRUGO|S_IWUGO, pid_attr),
- REG("prev", S_IRUGO, pid_attr),
- REG("exec", S_IRUGO|S_IWUGO, pid_attr),
- REG("fscreate", S_IRUGO|S_IWUGO, pid_attr),
- REG("keycreate", S_IRUGO|S_IWUGO, pid_attr),
- REG("sockcreate", S_IRUGO|S_IWUGO, pid_attr),
+ REG("current", S_IRUGO|S_IWUGO, proc_pid_attr_operations),
+ REG("prev", S_IRUGO, proc_pid_attr_operations),
+ REG("exec", S_IRUGO|S_IWUGO, proc_pid_attr_operations),
+ REG("fscreate", S_IRUGO|S_IWUGO, proc_pid_attr_operations),
+ REG("keycreate", S_IRUGO|S_IWUGO, proc_pid_attr_operations),
+ REG("sockcreate", S_IRUGO|S_IWUGO, proc_pid_attr_operations),
};
static int proc_attr_dir_readdir(struct file * filp,
@@ -2349,8 +2370,6 @@ static struct dentry *proc_base_instantiate(struct inode *dir,
if (!ei->pid)
goto out_iput;
- inode->i_uid = 0;
- inode->i_gid = 0;
inode->i_mode = p->mode;
if (S_ISDIR(inode->i_mode))
inode->i_nlink = 2;
@@ -2465,74 +2484,77 @@ static const struct file_operations proc_task_operations;
static const struct inode_operations proc_task_inode_operations;
static const struct pid_entry tgid_base_stuff[] = {
- DIR("task", S_IRUGO|S_IXUGO, task),
- DIR("fd", S_IRUSR|S_IXUSR, fd),
- DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo),
+ DIR("task", S_IRUGO|S_IXUGO, proc_task_inode_operations, proc_task_operations),
+ DIR("fd", S_IRUSR|S_IXUSR, proc_fd_inode_operations, proc_fd_operations),
+ DIR("fdinfo", S_IRUSR|S_IXUSR, proc_fdinfo_inode_operations, proc_fdinfo_operations),
#ifdef CONFIG_NET
- DIR("net", S_IRUGO|S_IXUGO, net),
+ DIR("net", S_IRUGO|S_IXUGO, proc_net_inode_operations, proc_net_operations),
#endif
- REG("environ", S_IRUSR, environ),
- INF("auxv", S_IRUSR, pid_auxv),
- ONE("status", S_IRUGO, pid_status),
- ONE("personality", S_IRUSR, pid_personality),
- INF("limits", S_IRUSR, pid_limits),
+ REG("environ", S_IRUSR, proc_environ_operations),
+ INF("auxv", S_IRUSR, proc_pid_auxv),
+ ONE("status", S_IRUGO, proc_pid_status),
+ ONE("personality", S_IRUSR, proc_pid_personality),
+ INF("limits", S_IRUSR, proc_pid_limits),
#ifdef CONFIG_SCHED_DEBUG
- REG("sched", S_IRUGO|S_IWUSR, pid_sched),
+ REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations),
#endif
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
- INF("syscall", S_IRUSR, pid_syscall),
+ INF("syscall", S_IRUSR, proc_pid_syscall),
#endif
- INF("cmdline", S_IRUGO, pid_cmdline),
- ONE("stat", S_IRUGO, tgid_stat),
- ONE("statm", S_IRUGO, pid_statm),
- REG("maps", S_IRUGO, maps),
+ INF("cmdline", S_IRUGO, proc_pid_cmdline),
+ ONE("stat", S_IRUGO, proc_tgid_stat),
+ ONE("statm", S_IRUGO, proc_pid_statm),
+ REG("maps", S_IRUGO, proc_maps_operations),
#ifdef CONFIG_NUMA
- REG("numa_maps", S_IRUGO, numa_maps),
+ REG("numa_maps", S_IRUGO, proc_numa_maps_operations),
#endif
- REG("mem", S_IRUSR|S_IWUSR, mem),
- LNK("cwd", cwd),
- LNK("root", root),
- LNK("exe", exe),
- REG("mounts", S_IRUGO, mounts),
- REG("mountinfo", S_IRUGO, mountinfo),
- REG("mountstats", S_IRUSR, mountstats),
+ REG("mem", S_IRUSR|S_IWUSR, proc_mem_operations),
+ LNK("cwd", proc_cwd_link),
+ LNK("root", proc_root_link),
+ LNK("exe", proc_exe_link),
+ REG("mounts", S_IRUGO, proc_mounts_operations),
+ REG("mountinfo", S_IRUGO, proc_mountinfo_operations),
+ REG("mountstats", S_IRUSR, proc_mountstats_operations),
#ifdef CONFIG_PROC_PAGE_MONITOR
- REG("clear_refs", S_IWUSR, clear_refs),
- REG("smaps", S_IRUGO, smaps),
- REG("pagemap", S_IRUSR, pagemap),
+ REG("clear_refs", S_IWUSR, proc_clear_refs_operations),
+ REG("smaps", S_IRUGO, proc_smaps_operations),
+ REG("pagemap", S_IRUSR, proc_pagemap_operations),
#endif
#ifdef CONFIG_SECURITY
- DIR("attr", S_IRUGO|S_IXUGO, attr_dir),
+ DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
#endif
#ifdef CONFIG_KALLSYMS
- INF("wchan", S_IRUGO, pid_wchan),
+ INF("wchan", S_IRUGO, proc_pid_wchan),
+#endif
+#ifdef CONFIG_STACKTRACE
+ ONE("stack", S_IRUSR, proc_pid_stack),
#endif
#ifdef CONFIG_SCHEDSTATS
- INF("schedstat", S_IRUGO, pid_schedstat),
+ INF("schedstat", S_IRUGO, proc_pid_schedstat),
#endif
#ifdef CONFIG_LATENCYTOP
- REG("latency", S_IRUGO, lstats),
+ REG("latency", S_IRUGO, proc_lstats_operations),
#endif
#ifdef CONFIG_PROC_PID_CPUSET
- REG("cpuset", S_IRUGO, cpuset),
+ REG("cpuset", S_IRUGO, proc_cpuset_operations),
#endif
#ifdef CONFIG_CGROUPS
- REG("cgroup", S_IRUGO, cgroup),
+ REG("cgroup", S_IRUGO, proc_cgroup_operations),
#endif
- INF("oom_score", S_IRUGO, oom_score),
- REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust),
+ INF("oom_score", S_IRUGO, proc_oom_score),
+ REG("oom_adj", S_IRUGO|S_IWUSR, proc_oom_adjust_operations),
#ifdef CONFIG_AUDITSYSCALL
- REG("loginuid", S_IWUSR|S_IRUGO, loginuid),
- REG("sessionid", S_IRUGO, sessionid),
+ REG("loginuid", S_IWUSR|S_IRUGO, proc_loginuid_operations),
+ REG("sessionid", S_IRUGO, proc_sessionid_operations),
#endif
#ifdef CONFIG_FAULT_INJECTION
- REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject),
+ REG("make-it-fail", S_IRUGO|S_IWUSR, proc_fault_inject_operations),
#endif
#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE)
- REG("coredump_filter", S_IRUGO|S_IWUSR, coredump_filter),
+ REG("coredump_filter", S_IRUGO|S_IWUSR, proc_coredump_filter_operations),
#endif
#ifdef CONFIG_TASK_IO_ACCOUNTING
- INF("io", S_IRUGO, tgid_io_accounting),
+ INF("io", S_IRUGO, proc_tgid_io_accounting),
#endif
};
@@ -2805,66 +2827,69 @@ out_no_task:
* Tasks
*/
static const struct pid_entry tid_base_stuff[] = {
- DIR("fd", S_IRUSR|S_IXUSR, fd),
- DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo),
- REG("environ", S_IRUSR, environ),
- INF("auxv", S_IRUSR, pid_auxv),
- ONE("status", S_IRUGO, pid_status),
- ONE("personality", S_IRUSR, pid_personality),
- INF("limits", S_IRUSR, pid_limits),
+ DIR("fd", S_IRUSR|S_IXUSR, proc_fd_inode_operations, proc_fd_operations),
+ DIR("fdinfo", S_IRUSR|S_IXUSR, proc_fdinfo_inode_operations, proc_fd_operations),
+ REG("environ", S_IRUSR, proc_environ_operations),
+ INF("auxv", S_IRUSR, proc_pid_auxv),
+ ONE("status", S_IRUGO, proc_pid_status),
+ ONE("personality", S_IRUSR, proc_pid_personality),
+ INF("limits", S_IRUSR, proc_pid_limits),
#ifdef CONFIG_SCHED_DEBUG
- REG("sched", S_IRUGO|S_IWUSR, pid_sched),
+ REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations),
#endif
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
- INF("syscall", S_IRUSR, pid_syscall),
+ INF("syscall", S_IRUSR, proc_pid_syscall),
#endif
- INF("cmdline", S_IRUGO, pid_cmdline),
- ONE("stat", S_IRUGO, tid_stat),
- ONE("statm", S_IRUGO, pid_statm),
- REG("maps", S_IRUGO, maps),
+ INF("cmdline", S_IRUGO, proc_pid_cmdline),
+ ONE("stat", S_IRUGO, proc_tid_stat),
+ ONE("statm", S_IRUGO, proc_pid_statm),
+ REG("maps", S_IRUGO, proc_maps_operations),
#ifdef CONFIG_NUMA
- REG("numa_maps", S_IRUGO, numa_maps),
+ REG("numa_maps", S_IRUGO, proc_numa_maps_operations),
#endif
- REG("mem", S_IRUSR|S_IWUSR, mem),
- LNK("cwd", cwd),
- LNK("root", root),
- LNK("exe", exe),
- REG("mounts", S_IRUGO, mounts),
- REG("mountinfo", S_IRUGO, mountinfo),
+ REG("mem", S_IRUSR|S_IWUSR, proc_mem_operations),
+ LNK("cwd", proc_cwd_link),
+ LNK("root", proc_root_link),
+ LNK("exe", proc_exe_link),
+ REG("mounts", S_IRUGO, proc_mounts_operations),
+ REG("mountinfo", S_IRUGO, proc_mountinfo_operations),
#ifdef CONFIG_PROC_PAGE_MONITOR
- REG("clear_refs", S_IWUSR, clear_refs),
- REG("smaps", S_IRUGO, smaps),
- REG("pagemap", S_IRUSR, pagemap),
+ REG("clear_refs", S_IWUSR, proc_clear_refs_operations),
+ REG("smaps", S_IRUGO, proc_smaps_operations),
+ REG("pagemap", S_IRUSR, proc_pagemap_operations),
#endif
#ifdef CONFIG_SECURITY
- DIR("attr", S_IRUGO|S_IXUGO, attr_dir),
+ DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
#endif
#ifdef CONFIG_KALLSYMS
- INF("wchan", S_IRUGO, pid_wchan),
+ INF("wchan", S_IRUGO, proc_pid_wchan),
+#endif
+#ifdef CONFIG_STACKTRACE
+ ONE("stack", S_IRUSR, proc_pid_stack),
#endif
#ifdef CONFIG_SCHEDSTATS
- INF("schedstat", S_IRUGO, pid_schedstat),
+ INF("schedstat", S_IRUGO, proc_pid_schedstat),
#endif
#ifdef CONFIG_LATENCYTOP
- REG("latency", S_IRUGO, lstats),
+ REG("latency", S_IRUGO, proc_lstats_operations),
#endif
#ifdef CONFIG_PROC_PID_CPUSET
- REG("cpuset", S_IRUGO, cpuset),
+ REG("cpuset", S_IRUGO, proc_cpuset_operations),
#endif
#ifdef CONFIG_CGROUPS
- REG("cgroup", S_IRUGO, cgroup),
+ REG("cgroup", S_IRUGO, proc_cgroup_operations),
#endif
- INF("oom_score", S_IRUGO, oom_score),
- REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust),
+ INF("oom_score", S_IRUGO, proc_oom_score),
+ REG("oom_adj", S_IRUGO|S_IWUSR, proc_oom_adjust_operations),
#ifdef CONFIG_AUDITSYSCALL
- REG("loginuid", S_IWUSR|S_IRUGO, loginuid),
- REG("sessionid", S_IRUSR, sessionid),
+ REG("loginuid", S_IWUSR|S_IRUGO, proc_loginuid_operations),
+ REG("sessionid", S_IRUSR, proc_sessionid_operations),
#endif
#ifdef CONFIG_FAULT_INJECTION
- REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject),
+ REG("make-it-fail", S_IRUGO|S_IWUSR, proc_fault_inject_operations),
#endif
#ifdef CONFIG_TASK_IO_ACCOUNTING
- INF("io", S_IRUGO, tid_io_accounting),
+ INF("io", S_IRUGO, proc_tid_io_accounting),
#endif
};
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 60a359b3558..db7fa5cab98 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -14,7 +14,6 @@
#include <linux/stat.h>
#include <linux/module.h>
#include <linux/mount.h>
-#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/idr.h>
#include <linux/namei.h>
@@ -379,7 +378,6 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
struct inode *inode = NULL;
int error = -ENOENT;
- lock_kernel();
spin_lock(&proc_subdir_lock);
for (de = de->subdir; de ; de = de->next) {
if (de->namelen != dentry->d_name.len)
@@ -397,7 +395,6 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
}
spin_unlock(&proc_subdir_lock);
out_unlock:
- unlock_kernel();
if (inode) {
dentry->d_op = &proc_dentry_operations;
@@ -432,8 +429,6 @@ int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
struct inode *inode = filp->f_path.dentry->d_inode;
int ret = 0;
- lock_kernel();
-
ino = inode->i_ino;
i = filp->f_pos;
switch (i) {
@@ -487,7 +482,7 @@ int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
spin_unlock(&proc_subdir_lock);
}
ret = 1;
-out: unlock_kernel();
+out:
return ret;
}
@@ -504,6 +499,7 @@ int proc_readdir(struct file *filp, void *dirent, filldir_t filldir)
* the /proc directory.
*/
static const struct file_operations proc_dir_operations = {
+ .llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = proc_readdir,
};
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 2543fd00c65..3e76bb9b3ad 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -35,16 +35,13 @@ struct proc_dir_entry *de_get(struct proc_dir_entry *de)
*/
void de_put(struct proc_dir_entry *de)
{
- lock_kernel();
if (!atomic_read(&de->count)) {
printk("de_put: entry %s already free!\n", de->name);
- unlock_kernel();
return;
}
if (atomic_dec_and_test(&de->count))
free_proc_entry(de);
- unlock_kernel();
}
/*
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 7bc296f424a..04d1270f1c3 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -18,7 +18,6 @@
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/bitops.h>
-#include <linux/smp_lock.h>
#include <linux/mount.h>
#include <linux/nsproxy.h>
#include <net/net_namespace.h>
@@ -172,6 +171,7 @@ static int proc_tgid_net_readdir(struct file *filp, void *dirent,
}
const struct file_operations proc_net_operations = {
+ .llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = proc_tgid_net_readdir,
};
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 06ed10b7da9..94fcfff6863 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -31,7 +31,6 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
inode->i_flags |= S_PRIVATE; /* tell selinux to ignore this inode */
inode->i_mode = table->mode;
- inode->i_uid = inode->i_gid = 0;
if (!table->child) {
inode->i_mode |= S_IFREG;
inode->i_op = &proc_sys_inode_operations;
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 7761602af9d..f6299a25594 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -16,7 +16,6 @@
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/bitops.h>
-#include <linux/smp_lock.h>
#include <linux/mount.h>
#include <linux/pid_namespace.h>
@@ -162,17 +161,12 @@ static int proc_root_readdir(struct file * filp,
unsigned int nr = filp->f_pos;
int ret;
- lock_kernel();
-
if (nr < FIRST_PROCESS_ENTRY) {
int error = proc_readdir(filp, dirent, filldir);
- if (error <= 0) {
- unlock_kernel();
+ if (error <= 0)
return error;
- }
filp->f_pos = FIRST_PROCESS_ENTRY;
}
- unlock_kernel();
ret = proc_pid_readdir(filp, dirent, filldir);
return ret;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 3a8bdd7f575..94063840832 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -396,7 +396,9 @@ static int show_smap(struct seq_file *m, void *v)
"Private_Clean: %8lu kB\n"
"Private_Dirty: %8lu kB\n"
"Referenced: %8lu kB\n"
- "Swap: %8lu kB\n",
+ "Swap: %8lu kB\n"
+ "KernelPageSize: %8lu kB\n"
+ "MMUPageSize: %8lu kB\n",
(vma->vm_end - vma->vm_start) >> 10,
mss.resident >> 10,
(unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
@@ -405,7 +407,9 @@ static int show_smap(struct seq_file *m, void *v)
mss.private_clean >> 10,
mss.private_dirty >> 10,
mss.referenced >> 10,
- mss.swap >> 10);
+ mss.swap >> 10,
+ vma_kernel_pagesize(vma) >> 10,
+ vma_mmu_pagesize(vma) >> 10);
if (m->count < m->size) /* vma is copied successfully */
m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 219bd79ea89..d4a8be32b90 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -9,7 +9,7 @@
/*
* Logic: we've got two memory sums for each process, "shared", and
- * "non-shared". Shared memory may get counted more then once, for
+ * "non-shared". Shared memory may get counted more than once, for
* each process that owns it. Non-shared memory is counted
* accurately.
*/
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 03ec5950490..5edcc3f92ba 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -47,8 +47,6 @@ static ssize_t read_from_oldmem(char *buf, size_t count,
offset = (unsigned long)(*ppos % PAGE_SIZE);
pfn = (unsigned long)(*ppos / PAGE_SIZE);
- if (pfn > saved_max_pfn)
- return -EINVAL;
do {
if (count > (PAGE_SIZE - offset))
diff --git a/fs/quota.c b/fs/quota.c
index b7fe44e0161..4a8c94f05f7 100644
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -73,7 +73,7 @@ static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid
case Q_SETQUOTA:
case Q_GETQUOTA:
/* This is just informative test so we are satisfied without a lock */
- if (!sb_has_quota_enabled(sb, type))
+ if (!sb_has_quota_active(sb, type))
return -ESRCH;
}
@@ -160,6 +160,9 @@ static void quota_sync_sb(struct super_block *sb, int type)
int cnt;
sb->s_qcop->quota_sync(sb, type);
+
+ if (sb_dqopt(sb)->flags & DQUOT_QUOTA_SYS_FILE)
+ return;
/* This is not very clever (and fast) but currently I don't know about
* any other simple way of getting quota data to disk and we must get
* them there for userspace to be visible... */
@@ -175,7 +178,7 @@ static void quota_sync_sb(struct super_block *sb, int type)
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (type != -1 && cnt != type)
continue;
- if (!sb_has_quota_enabled(sb, cnt))
+ if (!sb_has_quota_active(sb, cnt))
continue;
mutex_lock_nested(&sb_dqopt(sb)->files[cnt]->i_mutex, I_MUTEX_QUOTA);
truncate_inode_pages(&sb_dqopt(sb)->files[cnt]->i_data, 0);
@@ -201,7 +204,7 @@ restart:
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (type != -1 && type != cnt)
continue;
- if (!sb_has_quota_enabled(sb, cnt))
+ if (!sb_has_quota_active(sb, cnt))
continue;
if (!info_dirty(&sb_dqopt(sb)->info[cnt]) &&
list_empty(&sb_dqopt(sb)->info[cnt].dqi_dirty_list))
@@ -245,7 +248,7 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void
__u32 fmt;
down_read(&sb_dqopt(sb)->dqptr_sem);
- if (!sb_has_quota_enabled(sb, type)) {
+ if (!sb_has_quota_active(sb, type)) {
up_read(&sb_dqopt(sb)->dqptr_sem);
return -ESRCH;
}
diff --git a/fs/quota_tree.c b/fs/quota_tree.c
new file mode 100644
index 00000000000..953404c95b1
--- /dev/null
+++ b/fs/quota_tree.c
@@ -0,0 +1,645 @@
+/*
+ * vfsv0 quota IO operations on file
+ */
+
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/dqblk_v2.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/quotaops.h>
+
+#include <asm/byteorder.h>
+
+#include "quota_tree.h"
+
+MODULE_AUTHOR("Jan Kara");
+MODULE_DESCRIPTION("Quota trie support");
+MODULE_LICENSE("GPL");
+
+#define __QUOTA_QT_PARANOIA
+
+typedef char *dqbuf_t;
+
+static int get_index(struct qtree_mem_dqinfo *info, qid_t id, int depth)
+{
+ unsigned int epb = info->dqi_usable_bs >> 2;
+
+ depth = info->dqi_qtree_depth - depth - 1;
+ while (depth--)
+ id /= epb;
+ return id % epb;
+}
+
+/* Number of entries in one blocks */
+static inline int qtree_dqstr_in_blk(struct qtree_mem_dqinfo *info)
+{
+ return (info->dqi_usable_bs - sizeof(struct qt_disk_dqdbheader))
+ / info->dqi_entry_size;
+}
+
+static dqbuf_t getdqbuf(size_t size)
+{
+ dqbuf_t buf = kmalloc(size, GFP_NOFS);
+ if (!buf)
+ printk(KERN_WARNING "VFS: Not enough memory for quota buffers.\n");
+ return buf;
+}
+
+static inline void freedqbuf(dqbuf_t buf)
+{
+ kfree(buf);
+}
+
+static inline ssize_t read_blk(struct qtree_mem_dqinfo *info, uint blk, dqbuf_t buf)
+{
+ struct super_block *sb = info->dqi_sb;
+
+ memset(buf, 0, info->dqi_usable_bs);
+ return sb->s_op->quota_read(sb, info->dqi_type, (char *)buf,
+ info->dqi_usable_bs, blk << info->dqi_blocksize_bits);
+}
+
+static inline ssize_t write_blk(struct qtree_mem_dqinfo *info, uint blk, dqbuf_t buf)
+{
+ struct super_block *sb = info->dqi_sb;
+
+ return sb->s_op->quota_write(sb, info->dqi_type, (char *)buf,
+ info->dqi_usable_bs, blk << info->dqi_blocksize_bits);
+}
+
+/* Remove empty block from list and return it */
+static int get_free_dqblk(struct qtree_mem_dqinfo *info)
+{
+ dqbuf_t buf = getdqbuf(info->dqi_usable_bs);
+ struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
+ int ret, blk;
+
+ if (!buf)
+ return -ENOMEM;
+ if (info->dqi_free_blk) {
+ blk = info->dqi_free_blk;
+ ret = read_blk(info, blk, buf);
+ if (ret < 0)
+ goto out_buf;
+ info->dqi_free_blk = le32_to_cpu(dh->dqdh_next_free);
+ }
+ else {
+ memset(buf, 0, info->dqi_usable_bs);
+ /* Assure block allocation... */
+ ret = write_blk(info, info->dqi_blocks, buf);
+ if (ret < 0)
+ goto out_buf;
+ blk = info->dqi_blocks++;
+ }
+ mark_info_dirty(info->dqi_sb, info->dqi_type);
+ ret = blk;
+out_buf:
+ freedqbuf(buf);
+ return ret;
+}
+
+/* Insert empty block to the list */
+static int put_free_dqblk(struct qtree_mem_dqinfo *info, dqbuf_t buf, uint blk)
+{
+ struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
+ int err;
+
+ dh->dqdh_next_free = cpu_to_le32(info->dqi_free_blk);
+ dh->dqdh_prev_free = cpu_to_le32(0);
+ dh->dqdh_entries = cpu_to_le16(0);
+ err = write_blk(info, blk, buf);
+ if (err < 0)
+ return err;
+ info->dqi_free_blk = blk;
+ mark_info_dirty(info->dqi_sb, info->dqi_type);
+ return 0;
+}
+
+/* Remove given block from the list of blocks with free entries */
+static int remove_free_dqentry(struct qtree_mem_dqinfo *info, dqbuf_t buf, uint blk)
+{
+ dqbuf_t tmpbuf = getdqbuf(info->dqi_usable_bs);
+ struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
+ uint nextblk = le32_to_cpu(dh->dqdh_next_free);
+ uint prevblk = le32_to_cpu(dh->dqdh_prev_free);
+ int err;
+
+ if (!tmpbuf)
+ return -ENOMEM;
+ if (nextblk) {
+ err = read_blk(info, nextblk, tmpbuf);
+ if (err < 0)
+ goto out_buf;
+ ((struct qt_disk_dqdbheader *)tmpbuf)->dqdh_prev_free =
+ dh->dqdh_prev_free;
+ err = write_blk(info, nextblk, tmpbuf);
+ if (err < 0)
+ goto out_buf;
+ }
+ if (prevblk) {
+ err = read_blk(info, prevblk, tmpbuf);
+ if (err < 0)
+ goto out_buf;
+ ((struct qt_disk_dqdbheader *)tmpbuf)->dqdh_next_free =
+ dh->dqdh_next_free;
+ err = write_blk(info, prevblk, tmpbuf);
+ if (err < 0)
+ goto out_buf;
+ } else {
+ info->dqi_free_entry = nextblk;
+ mark_info_dirty(info->dqi_sb, info->dqi_type);
+ }
+ freedqbuf(tmpbuf);
+ dh->dqdh_next_free = dh->dqdh_prev_free = cpu_to_le32(0);
+ /* No matter whether write succeeds block is out of list */
+ if (write_blk(info, blk, buf) < 0)
+ printk(KERN_ERR "VFS: Can't write block (%u) with free entries.\n", blk);
+ return 0;
+out_buf:
+ freedqbuf(tmpbuf);
+ return err;
+}
+
+/* Insert given block to the beginning of list with free entries */
+static int insert_free_dqentry(struct qtree_mem_dqinfo *info, dqbuf_t buf, uint blk)
+{
+ dqbuf_t tmpbuf = getdqbuf(info->dqi_usable_bs);
+ struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
+ int err;
+
+ if (!tmpbuf)
+ return -ENOMEM;
+ dh->dqdh_next_free = cpu_to_le32(info->dqi_free_entry);
+ dh->dqdh_prev_free = cpu_to_le32(0);
+ err = write_blk(info, blk, buf);
+ if (err < 0)
+ goto out_buf;
+ if (info->dqi_free_entry) {
+ err = read_blk(info, info->dqi_free_entry, tmpbuf);
+ if (err < 0)
+ goto out_buf;
+ ((struct qt_disk_dqdbheader *)tmpbuf)->dqdh_prev_free =
+ cpu_to_le32(blk);
+ err = write_blk(info, info->dqi_free_entry, tmpbuf);
+ if (err < 0)
+ goto out_buf;
+ }
+ freedqbuf(tmpbuf);
+ info->dqi_free_entry = blk;
+ mark_info_dirty(info->dqi_sb, info->dqi_type);
+ return 0;
+out_buf:
+ freedqbuf(tmpbuf);
+ return err;
+}
+
+/* Is the entry in the block free? */
+int qtree_entry_unused(struct qtree_mem_dqinfo *info, char *disk)
+{
+ int i;
+
+ for (i = 0; i < info->dqi_entry_size; i++)
+ if (disk[i])
+ return 0;
+ return 1;
+}
+EXPORT_SYMBOL(qtree_entry_unused);
+
+/* Find space for dquot */
+static uint find_free_dqentry(struct qtree_mem_dqinfo *info,
+ struct dquot *dquot, int *err)
+{
+ uint blk, i;
+ struct qt_disk_dqdbheader *dh;
+ dqbuf_t buf = getdqbuf(info->dqi_usable_bs);
+ char *ddquot;
+
+ *err = 0;
+ if (!buf) {
+ *err = -ENOMEM;
+ return 0;
+ }
+ dh = (struct qt_disk_dqdbheader *)buf;
+ if (info->dqi_free_entry) {
+ blk = info->dqi_free_entry;
+ *err = read_blk(info, blk, buf);
+ if (*err < 0)
+ goto out_buf;
+ } else {
+ blk = get_free_dqblk(info);
+ if ((int)blk < 0) {
+ *err = blk;
+ freedqbuf(buf);
+ return 0;
+ }
+ memset(buf, 0, info->dqi_usable_bs);
+ /* This is enough as block is already zeroed and entry list is empty... */
+ info->dqi_free_entry = blk;
+ mark_info_dirty(dquot->dq_sb, dquot->dq_type);
+ }
+ /* Block will be full? */
+ if (le16_to_cpu(dh->dqdh_entries) + 1 >= qtree_dqstr_in_blk(info)) {
+ *err = remove_free_dqentry(info, buf, blk);
+ if (*err < 0) {
+ printk(KERN_ERR "VFS: find_free_dqentry(): Can't "
+ "remove block (%u) from entry free list.\n",
+ blk);
+ goto out_buf;
+ }
+ }
+ le16_add_cpu(&dh->dqdh_entries, 1);
+ /* Find free structure in block */
+ for (i = 0, ddquot = ((char *)buf) + sizeof(struct qt_disk_dqdbheader);
+ i < qtree_dqstr_in_blk(info) && !qtree_entry_unused(info, ddquot);
+ i++, ddquot += info->dqi_entry_size);
+#ifdef __QUOTA_QT_PARANOIA
+ if (i == qtree_dqstr_in_blk(info)) {
+ printk(KERN_ERR "VFS: find_free_dqentry(): Data block full "
+ "but it shouldn't.\n");
+ *err = -EIO;
+ goto out_buf;
+ }
+#endif
+ *err = write_blk(info, blk, buf);
+ if (*err < 0) {
+ printk(KERN_ERR "VFS: find_free_dqentry(): Can't write quota "
+ "data block %u.\n", blk);
+ goto out_buf;
+ }
+ dquot->dq_off = (blk << info->dqi_blocksize_bits) +
+ sizeof(struct qt_disk_dqdbheader) +
+ i * info->dqi_entry_size;
+ freedqbuf(buf);
+ return blk;
+out_buf:
+ freedqbuf(buf);
+ return 0;
+}
+
+/* Insert reference to structure into the trie */
+static int do_insert_tree(struct qtree_mem_dqinfo *info, struct dquot *dquot,
+ uint *treeblk, int depth)
+{
+ dqbuf_t buf = getdqbuf(info->dqi_usable_bs);
+ int ret = 0, newson = 0, newact = 0;
+ __le32 *ref;
+ uint newblk;
+
+ if (!buf)
+ return -ENOMEM;
+ if (!*treeblk) {
+ ret = get_free_dqblk(info);
+ if (ret < 0)
+ goto out_buf;
+ *treeblk = ret;
+ memset(buf, 0, info->dqi_usable_bs);
+ newact = 1;
+ } else {
+ ret = read_blk(info, *treeblk, buf);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't read tree quota block "
+ "%u.\n", *treeblk);
+ goto out_buf;
+ }
+ }
+ ref = (__le32 *)buf;
+ newblk = le32_to_cpu(ref[get_index(info, dquot->dq_id, depth)]);
+ if (!newblk)
+ newson = 1;
+ if (depth == info->dqi_qtree_depth - 1) {
+#ifdef __QUOTA_QT_PARANOIA
+ if (newblk) {
+ printk(KERN_ERR "VFS: Inserting already present quota "
+ "entry (block %u).\n",
+ le32_to_cpu(ref[get_index(info,
+ dquot->dq_id, depth)]));
+ ret = -EIO;
+ goto out_buf;
+ }
+#endif
+ newblk = find_free_dqentry(info, dquot, &ret);
+ } else {
+ ret = do_insert_tree(info, dquot, &newblk, depth+1);
+ }
+ if (newson && ret >= 0) {
+ ref[get_index(info, dquot->dq_id, depth)] =
+ cpu_to_le32(newblk);
+ ret = write_blk(info, *treeblk, buf);
+ } else if (newact && ret < 0) {
+ put_free_dqblk(info, buf, *treeblk);
+ }
+out_buf:
+ freedqbuf(buf);
+ return ret;
+}
+
+/* Wrapper for inserting quota structure into tree */
+static inline int dq_insert_tree(struct qtree_mem_dqinfo *info,
+ struct dquot *dquot)
+{
+ int tmp = QT_TREEOFF;
+ return do_insert_tree(info, dquot, &tmp, 0);
+}
+
+/*
+ * We don't have to be afraid of deadlocks as we never have quotas on quota files...
+ */
+int qtree_write_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
+{
+ int type = dquot->dq_type;
+ struct super_block *sb = dquot->dq_sb;
+ ssize_t ret;
+ dqbuf_t ddquot = getdqbuf(info->dqi_entry_size);
+
+ if (!ddquot)
+ return -ENOMEM;
+
+ /* dq_off is guarded by dqio_mutex */
+ if (!dquot->dq_off) {
+ ret = dq_insert_tree(info, dquot);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Error %zd occurred while "
+ "creating quota.\n", ret);
+ freedqbuf(ddquot);
+ return ret;
+ }
+ }
+ spin_lock(&dq_data_lock);
+ info->dqi_ops->mem2disk_dqblk(ddquot, dquot);
+ spin_unlock(&dq_data_lock);
+ ret = sb->s_op->quota_write(sb, type, (char *)ddquot,
+ info->dqi_entry_size, dquot->dq_off);
+ if (ret != info->dqi_entry_size) {
+ printk(KERN_WARNING "VFS: dquota write failed on dev %s\n",
+ sb->s_id);
+ if (ret >= 0)
+ ret = -ENOSPC;
+ } else {
+ ret = 0;
+ }
+ dqstats.writes++;
+ freedqbuf(ddquot);
+
+ return ret;
+}
+EXPORT_SYMBOL(qtree_write_dquot);
+
+/* Free dquot entry in data block */
+static int free_dqentry(struct qtree_mem_dqinfo *info, struct dquot *dquot,
+ uint blk)
+{
+ struct qt_disk_dqdbheader *dh;
+ dqbuf_t buf = getdqbuf(info->dqi_usable_bs);
+ int ret = 0;
+
+ if (!buf)
+ return -ENOMEM;
+ if (dquot->dq_off >> info->dqi_blocksize_bits != blk) {
+ printk(KERN_ERR "VFS: Quota structure has offset to other "
+ "block (%u) than it should (%u).\n", blk,
+ (uint)(dquot->dq_off >> info->dqi_blocksize_bits));
+ goto out_buf;
+ }
+ ret = read_blk(info, blk, buf);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't read quota data block %u\n", blk);
+ goto out_buf;
+ }
+ dh = (struct qt_disk_dqdbheader *)buf;
+ le16_add_cpu(&dh->dqdh_entries, -1);
+ if (!le16_to_cpu(dh->dqdh_entries)) { /* Block got free? */
+ ret = remove_free_dqentry(info, buf, blk);
+ if (ret >= 0)
+ ret = put_free_dqblk(info, buf, blk);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't move quota data block (%u) "
+ "to free list.\n", blk);
+ goto out_buf;
+ }
+ } else {
+ memset(buf +
+ (dquot->dq_off & ((1 << info->dqi_blocksize_bits) - 1)),
+ 0, info->dqi_entry_size);
+ if (le16_to_cpu(dh->dqdh_entries) ==
+ qtree_dqstr_in_blk(info) - 1) {
+ /* Insert will write block itself */
+ ret = insert_free_dqentry(info, buf, blk);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't insert quota data "
+ "block (%u) to free entry list.\n", blk);
+ goto out_buf;
+ }
+ } else {
+ ret = write_blk(info, blk, buf);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't write quota data "
+ "block %u\n", blk);
+ goto out_buf;
+ }
+ }
+ }
+ dquot->dq_off = 0; /* Quota is now unattached */
+out_buf:
+ freedqbuf(buf);
+ return ret;
+}
+
+/* Remove reference to dquot from tree */
+static int remove_tree(struct qtree_mem_dqinfo *info, struct dquot *dquot,
+ uint *blk, int depth)
+{
+ dqbuf_t buf = getdqbuf(info->dqi_usable_bs);
+ int ret = 0;
+ uint newblk;
+ __le32 *ref = (__le32 *)buf;
+
+ if (!buf)
+ return -ENOMEM;
+ ret = read_blk(info, *blk, buf);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't read quota data block %u\n", *blk);
+ goto out_buf;
+ }
+ newblk = le32_to_cpu(ref[get_index(info, dquot->dq_id, depth)]);
+ if (depth == info->dqi_qtree_depth - 1) {
+ ret = free_dqentry(info, dquot, newblk);
+ newblk = 0;
+ } else {
+ ret = remove_tree(info, dquot, &newblk, depth+1);
+ }
+ if (ret >= 0 && !newblk) {
+ int i;
+ ref[get_index(info, dquot->dq_id, depth)] = cpu_to_le32(0);
+ /* Block got empty? */
+ for (i = 0;
+ i < (info->dqi_usable_bs >> 2) && !ref[i];
+ i++);
+ /* Don't put the root block into the free block list */
+ if (i == (info->dqi_usable_bs >> 2)
+ && *blk != QT_TREEOFF) {
+ put_free_dqblk(info, buf, *blk);
+ *blk = 0;
+ } else {
+ ret = write_blk(info, *blk, buf);
+ if (ret < 0)
+ printk(KERN_ERR "VFS: Can't write quota tree "
+ "block %u.\n", *blk);
+ }
+ }
+out_buf:
+ freedqbuf(buf);
+ return ret;
+}
+
+/* Delete dquot from tree */
+int qtree_delete_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
+{
+ uint tmp = QT_TREEOFF;
+
+ if (!dquot->dq_off) /* Even not allocated? */
+ return 0;
+ return remove_tree(info, dquot, &tmp, 0);
+}
+EXPORT_SYMBOL(qtree_delete_dquot);
+
+/* Find entry in block */
+static loff_t find_block_dqentry(struct qtree_mem_dqinfo *info,
+ struct dquot *dquot, uint blk)
+{
+ dqbuf_t buf = getdqbuf(info->dqi_usable_bs);
+ loff_t ret = 0;
+ int i;
+ char *ddquot;
+
+ if (!buf)
+ return -ENOMEM;
+ ret = read_blk(info, blk, buf);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't read quota tree block %u.\n", blk);
+ goto out_buf;
+ }
+ for (i = 0, ddquot = ((char *)buf) + sizeof(struct qt_disk_dqdbheader);
+ i < qtree_dqstr_in_blk(info) && !info->dqi_ops->is_id(ddquot, dquot);
+ i++, ddquot += info->dqi_entry_size);
+ if (i == qtree_dqstr_in_blk(info)) {
+ printk(KERN_ERR "VFS: Quota for id %u referenced "
+ "but not present.\n", dquot->dq_id);
+ ret = -EIO;
+ goto out_buf;
+ } else {
+ ret = (blk << info->dqi_blocksize_bits) + sizeof(struct
+ qt_disk_dqdbheader) + i * info->dqi_entry_size;
+ }
+out_buf:
+ freedqbuf(buf);
+ return ret;
+}
+
+/* Find entry for given id in the tree */
+static loff_t find_tree_dqentry(struct qtree_mem_dqinfo *info,
+ struct dquot *dquot, uint blk, int depth)
+{
+ dqbuf_t buf = getdqbuf(info->dqi_usable_bs);
+ loff_t ret = 0;
+ __le32 *ref = (__le32 *)buf;
+
+ if (!buf)
+ return -ENOMEM;
+ ret = read_blk(info, blk, buf);
+ if (ret < 0) {
+ printk(KERN_ERR "VFS: Can't read quota tree block %u.\n", blk);
+ goto out_buf;
+ }
+ ret = 0;
+ blk = le32_to_cpu(ref[get_index(info, dquot->dq_id, depth)]);
+ if (!blk) /* No reference? */
+ goto out_buf;
+ if (depth < info->dqi_qtree_depth - 1)
+ ret = find_tree_dqentry(info, dquot, blk, depth+1);
+ else
+ ret = find_block_dqentry(info, dquot, blk);
+out_buf:
+ freedqbuf(buf);
+ return ret;
+}
+
+/* Find entry for given id in the tree - wrapper function */
+static inline loff_t find_dqentry(struct qtree_mem_dqinfo *info,
+ struct dquot *dquot)
+{
+ return find_tree_dqentry(info, dquot, QT_TREEOFF, 0);
+}
+
+int qtree_read_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
+{
+ int type = dquot->dq_type;
+ struct super_block *sb = dquot->dq_sb;
+ loff_t offset;
+ dqbuf_t ddquot;
+ int ret = 0;
+
+#ifdef __QUOTA_QT_PARANOIA
+ /* Invalidated quota? */
+ if (!sb_dqopt(dquot->dq_sb)->files[type]) {
+ printk(KERN_ERR "VFS: Quota invalidated while reading!\n");
+ return -EIO;
+ }
+#endif
+ /* Do we know offset of the dquot entry in the quota file? */
+ if (!dquot->dq_off) {
+ offset = find_dqentry(info, dquot);
+ if (offset <= 0) { /* Entry not present? */
+ if (offset < 0)
+ printk(KERN_ERR "VFS: Can't read quota "
+ "structure for id %u.\n", dquot->dq_id);
+ dquot->dq_off = 0;
+ set_bit(DQ_FAKE_B, &dquot->dq_flags);
+ memset(&dquot->dq_dqb, 0, sizeof(struct mem_dqblk));
+ ret = offset;
+ goto out;
+ }
+ dquot->dq_off = offset;
+ }
+ ddquot = getdqbuf(info->dqi_entry_size);
+ if (!ddquot)
+ return -ENOMEM;
+ ret = sb->s_op->quota_read(sb, type, (char *)ddquot,
+ info->dqi_entry_size, dquot->dq_off);
+ if (ret != info->dqi_entry_size) {
+ if (ret >= 0)
+ ret = -EIO;
+ printk(KERN_ERR "VFS: Error while reading quota "
+ "structure for id %u.\n", dquot->dq_id);
+ set_bit(DQ_FAKE_B, &dquot->dq_flags);
+ memset(&dquot->dq_dqb, 0, sizeof(struct mem_dqblk));
+ freedqbuf(ddquot);
+ goto out;
+ }
+ spin_lock(&dq_data_lock);
+ info->dqi_ops->disk2mem_dqblk(dquot, ddquot);
+ if (!dquot->dq_dqb.dqb_bhardlimit &&
+ !dquot->dq_dqb.dqb_bsoftlimit &&
+ !dquot->dq_dqb.dqb_ihardlimit &&
+ !dquot->dq_dqb.dqb_isoftlimit)
+ set_bit(DQ_FAKE_B, &dquot->dq_flags);
+ spin_unlock(&dq_data_lock);
+ freedqbuf(ddquot);
+out:
+ dqstats.reads++;
+ return ret;
+}
+EXPORT_SYMBOL(qtree_read_dquot);
+
+/* Check whether dquot should not be deleted. We know we are
+ * the only one operating on dquot (thanks to dq_lock) */
+int qtree_release_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
+{
+ if (test_bit(DQ_FAKE_B, &dquot->dq_flags) && !(dquot->dq_dqb.dqb_curinodes | dquot->dq_dqb.dqb_curspace))
+ return qtree_delete_dquot(info, dquot);
+ return 0;
+}
+EXPORT_SYMBOL(qtree_release_dquot);
diff --git a/fs/quota_tree.h b/fs/quota_tree.h
new file mode 100644
index 00000000000..a1ab8db81a5
--- /dev/null
+++ b/fs/quota_tree.h
@@ -0,0 +1,25 @@
+/*
+ * Definitions of structures for vfsv0 quota format
+ */
+
+#ifndef _LINUX_QUOTA_TREE_H
+#define _LINUX_QUOTA_TREE_H
+
+#include <linux/types.h>
+#include <linux/quota.h>
+
+/*
+ * Structure of header of block with quota structures. It is padded to 16 bytes so
+ * there will be space for exactly 21 quota-entries in a block
+ */
+struct qt_disk_dqdbheader {
+ __le32 dqdh_next_free; /* Number of next block with free entry */
+ __le32 dqdh_prev_free; /* Number of previous block with free entry */
+ __le16 dqdh_entries; /* Number of valid entries in block */
+ __le16 dqdh_pad1;
+ __le32 dqdh_pad2;
+};
+
+#define QT_TREEOFF 1 /* Offset of tree in file in blocks */
+
+#endif /* _LINUX_QUOTAIO_TREE_H */
diff --git a/fs/quota_v1.c b/fs/quota_v1.c
index 5ae15b13eeb..b4af1c69ad1 100644
--- a/fs/quota_v1.c
+++ b/fs/quota_v1.c
@@ -3,25 +3,39 @@
#include <linux/quota.h>
#include <linux/quotaops.h>
#include <linux/dqblk_v1.h>
-#include <linux/quotaio_v1.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <asm/byteorder.h>
+#include "quotaio_v1.h"
+
MODULE_AUTHOR("Jan Kara");
MODULE_DESCRIPTION("Old quota format support");
MODULE_LICENSE("GPL");
+#define QUOTABLOCK_BITS 10
+#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS)
+
+static inline qsize_t v1_stoqb(qsize_t space)
+{
+ return (space + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS;
+}
+
+static inline qsize_t v1_qbtos(qsize_t blocks)
+{
+ return blocks << QUOTABLOCK_BITS;
+}
+
static void v1_disk2mem_dqblk(struct mem_dqblk *m, struct v1_disk_dqblk *d)
{
m->dqb_ihardlimit = d->dqb_ihardlimit;
m->dqb_isoftlimit = d->dqb_isoftlimit;
m->dqb_curinodes = d->dqb_curinodes;
- m->dqb_bhardlimit = d->dqb_bhardlimit;
- m->dqb_bsoftlimit = d->dqb_bsoftlimit;
- m->dqb_curspace = ((qsize_t)d->dqb_curblocks) << QUOTABLOCK_BITS;
+ m->dqb_bhardlimit = v1_qbtos(d->dqb_bhardlimit);
+ m->dqb_bsoftlimit = v1_qbtos(d->dqb_bsoftlimit);
+ m->dqb_curspace = v1_qbtos(d->dqb_curblocks);
m->dqb_itime = d->dqb_itime;
m->dqb_btime = d->dqb_btime;
}
@@ -31,9 +45,9 @@ static void v1_mem2disk_dqblk(struct v1_disk_dqblk *d, struct mem_dqblk *m)
d->dqb_ihardlimit = m->dqb_ihardlimit;
d->dqb_isoftlimit = m->dqb_isoftlimit;
d->dqb_curinodes = m->dqb_curinodes;
- d->dqb_bhardlimit = m->dqb_bhardlimit;
- d->dqb_bsoftlimit = m->dqb_bsoftlimit;
- d->dqb_curblocks = toqb(m->dqb_curspace);
+ d->dqb_bhardlimit = v1_stoqb(m->dqb_bhardlimit);
+ d->dqb_bsoftlimit = v1_stoqb(m->dqb_bsoftlimit);
+ d->dqb_curblocks = v1_stoqb(m->dqb_curspace);
d->dqb_itime = m->dqb_itime;
d->dqb_btime = m->dqb_btime;
}
diff --git a/fs/quota_v2.c b/fs/quota_v2.c
index b53827dc02d..b618b563635 100644
--- a/fs/quota_v2.c
+++ b/fs/quota_v2.c
@@ -6,7 +6,6 @@
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/dqblk_v2.h>
-#include <linux/quotaio_v2.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
@@ -15,16 +14,37 @@
#include <asm/byteorder.h>
+#include "quota_tree.h"
+#include "quotaio_v2.h"
+
MODULE_AUTHOR("Jan Kara");
MODULE_DESCRIPTION("Quota format v2 support");
MODULE_LICENSE("GPL");
#define __QUOTA_V2_PARANOIA
-typedef char *dqbuf_t;
+static void v2_mem2diskdqb(void *dp, struct dquot *dquot);
+static void v2_disk2memdqb(struct dquot *dquot, void *dp);
+static int v2_is_id(void *dp, struct dquot *dquot);
+
+static struct qtree_fmt_operations v2_qtree_ops = {
+ .mem2disk_dqblk = v2_mem2diskdqb,
+ .disk2mem_dqblk = v2_disk2memdqb,
+ .is_id = v2_is_id,
+};
+
+#define QUOTABLOCK_BITS 10
+#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS)
-#define GETIDINDEX(id, depth) (((id) >> ((V2_DQTREEDEPTH-(depth)-1)*8)) & 0xff)
-#define GETENTRIES(buf) ((struct v2_disk_dqblk *)(((char *)buf)+sizeof(struct v2_disk_dqdbheader)))
+static inline qsize_t v2_stoqb(qsize_t space)
+{
+ return (space + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS;
+}
+
+static inline qsize_t v2_qbtos(qsize_t blocks)
+{
+ return blocks << QUOTABLOCK_BITS;
+}
/* Check whether given file is really vfsv0 quotafile */
static int v2_check_quota_file(struct super_block *sb, int type)
@@ -50,7 +70,8 @@ static int v2_check_quota_file(struct super_block *sb, int type)
static int v2_read_file_info(struct super_block *sb, int type)
{
struct v2_disk_dqinfo dinfo;
- struct mem_dqinfo *info = sb_dqopt(sb)->info+type;
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct qtree_mem_dqinfo *qinfo;
ssize_t size;
size = sb->s_op->quota_read(sb, type, (char *)&dinfo,
@@ -60,15 +81,29 @@ static int v2_read_file_info(struct super_block *sb, int type)
sb->s_id);
return -1;
}
+ info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS);
+ if (!info->dqi_priv) {
+ printk(KERN_WARNING
+ "Not enough memory for quota information structure.\n");
+ return -1;
+ }
+ qinfo = info->dqi_priv;
/* limits are stored as unsigned 32-bit data */
info->dqi_maxblimit = 0xffffffff;
info->dqi_maxilimit = 0xffffffff;
info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace);
info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace);
info->dqi_flags = le32_to_cpu(dinfo.dqi_flags);
- info->u.v2_i.dqi_blocks = le32_to_cpu(dinfo.dqi_blocks);
- info->u.v2_i.dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk);
- info->u.v2_i.dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry);
+ qinfo->dqi_sb = sb;
+ qinfo->dqi_type = type;
+ qinfo->dqi_blocks = le32_to_cpu(dinfo.dqi_blocks);
+ qinfo->dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk);
+ qinfo->dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry);
+ qinfo->dqi_blocksize_bits = V2_DQBLKSIZE_BITS;
+ qinfo->dqi_usable_bs = 1 << V2_DQBLKSIZE_BITS;
+ qinfo->dqi_qtree_depth = qtree_depth(qinfo);
+ qinfo->dqi_entry_size = sizeof(struct v2_disk_dqblk);
+ qinfo->dqi_ops = &v2_qtree_ops;
return 0;
}
@@ -76,7 +111,8 @@ static int v2_read_file_info(struct super_block *sb, int type)
static int v2_write_file_info(struct super_block *sb, int type)
{
struct v2_disk_dqinfo dinfo;
- struct mem_dqinfo *info = sb_dqopt(sb)->info+type;
+ struct mem_dqinfo *info = sb_dqinfo(sb, type);
+ struct qtree_mem_dqinfo *qinfo = info->dqi_priv;
ssize_t size;
spin_lock(&dq_data_lock);
@@ -85,9 +121,9 @@ static int v2_write_file_info(struct super_block *sb, int type)
dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace);
dinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK);
spin_unlock(&dq_data_lock);
- dinfo.dqi_blocks = cpu_to_le32(info->u.v2_i.dqi_blocks);
- dinfo.dqi_free_blk = cpu_to_le32(info->u.v2_i.dqi_free_blk);
- dinfo.dqi_free_entry = cpu_to_le32(info->u.v2_i.dqi_free_entry);
+ dinfo.dqi_blocks = cpu_to_le32(qinfo->dqi_blocks);
+ dinfo.dqi_free_blk = cpu_to_le32(qinfo->dqi_free_blk);
+ dinfo.dqi_free_entry = cpu_to_le32(qinfo->dqi_free_entry);
size = sb->s_op->quota_write(sb, type, (char *)&dinfo,
sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF);
if (size != sizeof(struct v2_disk_dqinfo)) {
@@ -98,574 +134,75 @@ static int v2_write_file_info(struct super_block *sb, int type)
return 0;
}
-static void disk2memdqb(struct mem_dqblk *m, struct v2_disk_dqblk *d)
+static void v2_disk2memdqb(struct dquot *dquot, void *dp)
{
+ struct v2_disk_dqblk *d = dp, empty;
+ struct mem_dqblk *m = &dquot->dq_dqb;
+
m->dqb_ihardlimit = le32_to_cpu(d->dqb_ihardlimit);
m->dqb_isoftlimit = le32_to_cpu(d->dqb_isoftlimit);
m->dqb_curinodes = le32_to_cpu(d->dqb_curinodes);
m->dqb_itime = le64_to_cpu(d->dqb_itime);
- m->dqb_bhardlimit = le32_to_cpu(d->dqb_bhardlimit);
- m->dqb_bsoftlimit = le32_to_cpu(d->dqb_bsoftlimit);
+ m->dqb_bhardlimit = v2_qbtos(le32_to_cpu(d->dqb_bhardlimit));
+ m->dqb_bsoftlimit = v2_qbtos(le32_to_cpu(d->dqb_bsoftlimit));
m->dqb_curspace = le64_to_cpu(d->dqb_curspace);
m->dqb_btime = le64_to_cpu(d->dqb_btime);
+ /* We need to escape back all-zero structure */
+ memset(&empty, 0, sizeof(struct v2_disk_dqblk));
+ empty.dqb_itime = cpu_to_le64(1);
+ if (!memcmp(&empty, dp, sizeof(struct v2_disk_dqblk)))
+ m->dqb_itime = 0;
}
-static void mem2diskdqb(struct v2_disk_dqblk *d, struct mem_dqblk *m, qid_t id)
+static void v2_mem2diskdqb(void *dp, struct dquot *dquot)
{
+ struct v2_disk_dqblk *d = dp;
+ struct mem_dqblk *m = &dquot->dq_dqb;
+ struct qtree_mem_dqinfo *info =
+ sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+
d->dqb_ihardlimit = cpu_to_le32(m->dqb_ihardlimit);
d->dqb_isoftlimit = cpu_to_le32(m->dqb_isoftlimit);
d->dqb_curinodes = cpu_to_le32(m->dqb_curinodes);
d->dqb_itime = cpu_to_le64(m->dqb_itime);
- d->dqb_bhardlimit = cpu_to_le32(m->dqb_bhardlimit);
- d->dqb_bsoftlimit = cpu_to_le32(m->dqb_bsoftlimit);
+ d->dqb_bhardlimit = cpu_to_le32(v2_stoqb(m->dqb_bhardlimit));
+ d->dqb_bsoftlimit = cpu_to_le32(v2_stoqb(m->dqb_bsoftlimit));
d->dqb_curspace = cpu_to_le64(m->dqb_curspace);
d->dqb_btime = cpu_to_le64(m->dqb_btime);
- d->dqb_id = cpu_to_le32(id);
-}
-
-static dqbuf_t getdqbuf(void)
-{
- dqbuf_t buf = kmalloc(V2_DQBLKSIZE, GFP_NOFS);
- if (!buf)
- printk(KERN_WARNING "VFS: Not enough memory for quota buffers.\n");
- return buf;
-}
-
-static inline void freedqbuf(dqbuf_t buf)
-{
- kfree(buf);
-}
-
-static inline ssize_t read_blk(struct super_block *sb, int type, uint blk, dqbuf_t buf)
-{
- memset(buf, 0, V2_DQBLKSIZE);
- return sb->s_op->quota_read(sb, type, (char *)buf,
- V2_DQBLKSIZE, blk << V2_DQBLKSIZE_BITS);
-}
-
-static inline ssize_t write_blk(struct super_block *sb, int type, uint blk, dqbuf_t buf)
-{
- return sb->s_op->quota_write(sb, type, (char *)buf,
- V2_DQBLKSIZE, blk << V2_DQBLKSIZE_BITS);
-}
-
-/* Remove empty block from list and return it */
-static int get_free_dqblk(struct super_block *sb, int type)
-{
- dqbuf_t buf = getdqbuf();
- struct mem_dqinfo *info = sb_dqinfo(sb, type);
- struct v2_disk_dqdbheader *dh = (struct v2_disk_dqdbheader *)buf;
- int ret, blk;
-
- if (!buf)
- return -ENOMEM;
- if (info->u.v2_i.dqi_free_blk) {
- blk = info->u.v2_i.dqi_free_blk;
- if ((ret = read_blk(sb, type, blk, buf)) < 0)
- goto out_buf;
- info->u.v2_i.dqi_free_blk = le32_to_cpu(dh->dqdh_next_free);
- }
- else {
- memset(buf, 0, V2_DQBLKSIZE);
- /* Assure block allocation... */
- if ((ret = write_blk(sb, type, info->u.v2_i.dqi_blocks, buf)) < 0)
- goto out_buf;
- blk = info->u.v2_i.dqi_blocks++;
- }
- mark_info_dirty(sb, type);
- ret = blk;
-out_buf:
- freedqbuf(buf);
- return ret;
-}
-
-/* Insert empty block to the list */
-static int put_free_dqblk(struct super_block *sb, int type, dqbuf_t buf, uint blk)
-{
- struct mem_dqinfo *info = sb_dqinfo(sb, type);
- struct v2_disk_dqdbheader *dh = (struct v2_disk_dqdbheader *)buf;
- int err;
-
- dh->dqdh_next_free = cpu_to_le32(info->u.v2_i.dqi_free_blk);
- dh->dqdh_prev_free = cpu_to_le32(0);
- dh->dqdh_entries = cpu_to_le16(0);
- info->u.v2_i.dqi_free_blk = blk;
- mark_info_dirty(sb, type);
- /* Some strange block. We had better leave it... */
- if ((err = write_blk(sb, type, blk, buf)) < 0)
- return err;
- return 0;
+ d->dqb_id = cpu_to_le32(dquot->dq_id);
+ if (qtree_entry_unused(info, dp))
+ d->dqb_itime = cpu_to_le64(1);
}
-/* Remove given block from the list of blocks with free entries */
-static int remove_free_dqentry(struct super_block *sb, int type, dqbuf_t buf, uint blk)
+static int v2_is_id(void *dp, struct dquot *dquot)
{
- dqbuf_t tmpbuf = getdqbuf();
- struct mem_dqinfo *info = sb_dqinfo(sb, type);
- struct v2_disk_dqdbheader *dh = (struct v2_disk_dqdbheader *)buf;
- uint nextblk = le32_to_cpu(dh->dqdh_next_free), prevblk = le32_to_cpu(dh->dqdh_prev_free);
- int err;
+ struct v2_disk_dqblk *d = dp;
+ struct qtree_mem_dqinfo *info =
+ sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
- if (!tmpbuf)
- return -ENOMEM;
- if (nextblk) {
- if ((err = read_blk(sb, type, nextblk, tmpbuf)) < 0)
- goto out_buf;
- ((struct v2_disk_dqdbheader *)tmpbuf)->dqdh_prev_free = dh->dqdh_prev_free;
- if ((err = write_blk(sb, type, nextblk, tmpbuf)) < 0)
- goto out_buf;
- }
- if (prevblk) {
- if ((err = read_blk(sb, type, prevblk, tmpbuf)) < 0)
- goto out_buf;
- ((struct v2_disk_dqdbheader *)tmpbuf)->dqdh_next_free = dh->dqdh_next_free;
- if ((err = write_blk(sb, type, prevblk, tmpbuf)) < 0)
- goto out_buf;
- }
- else {
- info->u.v2_i.dqi_free_entry = nextblk;
- mark_info_dirty(sb, type);
- }
- freedqbuf(tmpbuf);
- dh->dqdh_next_free = dh->dqdh_prev_free = cpu_to_le32(0);
- /* No matter whether write succeeds block is out of list */
- if (write_blk(sb, type, blk, buf) < 0)
- printk(KERN_ERR "VFS: Can't write block (%u) with free entries.\n", blk);
- return 0;
-out_buf:
- freedqbuf(tmpbuf);
- return err;
-}
-
-/* Insert given block to the beginning of list with free entries */
-static int insert_free_dqentry(struct super_block *sb, int type, dqbuf_t buf, uint blk)
-{
- dqbuf_t tmpbuf = getdqbuf();
- struct mem_dqinfo *info = sb_dqinfo(sb, type);
- struct v2_disk_dqdbheader *dh = (struct v2_disk_dqdbheader *)buf;
- int err;
-
- if (!tmpbuf)
- return -ENOMEM;
- dh->dqdh_next_free = cpu_to_le32(info->u.v2_i.dqi_free_entry);
- dh->dqdh_prev_free = cpu_to_le32(0);
- if ((err = write_blk(sb, type, blk, buf)) < 0)
- goto out_buf;
- if (info->u.v2_i.dqi_free_entry) {
- if ((err = read_blk(sb, type, info->u.v2_i.dqi_free_entry, tmpbuf)) < 0)
- goto out_buf;
- ((struct v2_disk_dqdbheader *)tmpbuf)->dqdh_prev_free = cpu_to_le32(blk);
- if ((err = write_blk(sb, type, info->u.v2_i.dqi_free_entry, tmpbuf)) < 0)
- goto out_buf;
- }
- freedqbuf(tmpbuf);
- info->u.v2_i.dqi_free_entry = blk;
- mark_info_dirty(sb, type);
- return 0;
-out_buf:
- freedqbuf(tmpbuf);
- return err;
-}
-
-/* Find space for dquot */
-static uint find_free_dqentry(struct dquot *dquot, int *err)
-{
- struct super_block *sb = dquot->dq_sb;
- struct mem_dqinfo *info = sb_dqopt(sb)->info+dquot->dq_type;
- uint blk, i;
- struct v2_disk_dqdbheader *dh;
- struct v2_disk_dqblk *ddquot;
- struct v2_disk_dqblk fakedquot;
- dqbuf_t buf;
-
- *err = 0;
- if (!(buf = getdqbuf())) {
- *err = -ENOMEM;
+ if (qtree_entry_unused(info, dp))
return 0;
- }
- dh = (struct v2_disk_dqdbheader *)buf;
- ddquot = GETENTRIES(buf);
- if (info->u.v2_i.dqi_free_entry) {
- blk = info->u.v2_i.dqi_free_entry;
- if ((*err = read_blk(sb, dquot->dq_type, blk, buf)) < 0)
- goto out_buf;
- }
- else {
- blk = get_free_dqblk(sb, dquot->dq_type);
- if ((int)blk < 0) {
- *err = blk;
- freedqbuf(buf);
- return 0;
- }
- memset(buf, 0, V2_DQBLKSIZE);
- /* This is enough as block is already zeroed and entry list is empty... */
- info->u.v2_i.dqi_free_entry = blk;
- mark_info_dirty(sb, dquot->dq_type);
- }
- if (le16_to_cpu(dh->dqdh_entries)+1 >= V2_DQSTRINBLK) /* Block will be full? */
- if ((*err = remove_free_dqentry(sb, dquot->dq_type, buf, blk)) < 0) {
- printk(KERN_ERR "VFS: find_free_dqentry(): Can't remove block (%u) from entry free list.\n", blk);
- goto out_buf;
- }
- le16_add_cpu(&dh->dqdh_entries, 1);
- memset(&fakedquot, 0, sizeof(struct v2_disk_dqblk));
- /* Find free structure in block */
- for (i = 0; i < V2_DQSTRINBLK && memcmp(&fakedquot, ddquot+i, sizeof(struct v2_disk_dqblk)); i++);
-#ifdef __QUOTA_V2_PARANOIA
- if (i == V2_DQSTRINBLK) {
- printk(KERN_ERR "VFS: find_free_dqentry(): Data block full but it shouldn't.\n");
- *err = -EIO;
- goto out_buf;
- }
-#endif
- if ((*err = write_blk(sb, dquot->dq_type, blk, buf)) < 0) {
- printk(KERN_ERR "VFS: find_free_dqentry(): Can't write quota data block %u.\n", blk);
- goto out_buf;
- }
- dquot->dq_off = (blk<<V2_DQBLKSIZE_BITS)+sizeof(struct v2_disk_dqdbheader)+i*sizeof(struct v2_disk_dqblk);
- freedqbuf(buf);
- return blk;
-out_buf:
- freedqbuf(buf);
- return 0;
-}
-
-/* Insert reference to structure into the trie */
-static int do_insert_tree(struct dquot *dquot, uint *treeblk, int depth)
-{
- struct super_block *sb = dquot->dq_sb;
- dqbuf_t buf;
- int ret = 0, newson = 0, newact = 0;
- __le32 *ref;
- uint newblk;
-
- if (!(buf = getdqbuf()))
- return -ENOMEM;
- if (!*treeblk) {
- ret = get_free_dqblk(sb, dquot->dq_type);
- if (ret < 0)
- goto out_buf;
- *treeblk = ret;
- memset(buf, 0, V2_DQBLKSIZE);
- newact = 1;
- }
- else {
- if ((ret = read_blk(sb, dquot->dq_type, *treeblk, buf)) < 0) {
- printk(KERN_ERR "VFS: Can't read tree quota block %u.\n", *treeblk);
- goto out_buf;
- }
- }
- ref = (__le32 *)buf;
- newblk = le32_to_cpu(ref[GETIDINDEX(dquot->dq_id, depth)]);
- if (!newblk)
- newson = 1;
- if (depth == V2_DQTREEDEPTH-1) {
-#ifdef __QUOTA_V2_PARANOIA
- if (newblk) {
- printk(KERN_ERR "VFS: Inserting already present quota entry (block %u).\n", le32_to_cpu(ref[GETIDINDEX(dquot->dq_id, depth)]));
- ret = -EIO;
- goto out_buf;
- }
-#endif
- newblk = find_free_dqentry(dquot, &ret);
- }
- else
- ret = do_insert_tree(dquot, &newblk, depth+1);
- if (newson && ret >= 0) {
- ref[GETIDINDEX(dquot->dq_id, depth)] = cpu_to_le32(newblk);
- ret = write_blk(sb, dquot->dq_type, *treeblk, buf);
- }
- else if (newact && ret < 0)
- put_free_dqblk(sb, dquot->dq_type, buf, *treeblk);
-out_buf:
- freedqbuf(buf);
- return ret;
+ return le32_to_cpu(d->dqb_id) == dquot->dq_id;
}
-/* Wrapper for inserting quota structure into tree */
-static inline int dq_insert_tree(struct dquot *dquot)
+static int v2_read_dquot(struct dquot *dquot)
{
- int tmp = V2_DQTREEOFF;
- return do_insert_tree(dquot, &tmp, 0);
+ return qtree_read_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv, dquot);
}
-/*
- * We don't have to be afraid of deadlocks as we never have quotas on quota files...
- */
static int v2_write_dquot(struct dquot *dquot)
{
- int type = dquot->dq_type;
- ssize_t ret;
- struct v2_disk_dqblk ddquot, empty;
-
- /* dq_off is guarded by dqio_mutex */
- if (!dquot->dq_off)
- if ((ret = dq_insert_tree(dquot)) < 0) {
- printk(KERN_ERR "VFS: Error %zd occurred while creating quota.\n", ret);
- return ret;
- }
- spin_lock(&dq_data_lock);
- mem2diskdqb(&ddquot, &dquot->dq_dqb, dquot->dq_id);
- /* Argh... We may need to write structure full of zeroes but that would be
- * treated as an empty place by the rest of the code. Format change would
- * be definitely cleaner but the problems probably are not worth it */
- memset(&empty, 0, sizeof(struct v2_disk_dqblk));
- if (!memcmp(&empty, &ddquot, sizeof(struct v2_disk_dqblk)))
- ddquot.dqb_itime = cpu_to_le64(1);
- spin_unlock(&dq_data_lock);
- ret = dquot->dq_sb->s_op->quota_write(dquot->dq_sb, type,
- (char *)&ddquot, sizeof(struct v2_disk_dqblk), dquot->dq_off);
- if (ret != sizeof(struct v2_disk_dqblk)) {
- printk(KERN_WARNING "VFS: dquota write failed on dev %s\n", dquot->dq_sb->s_id);
- if (ret >= 0)
- ret = -ENOSPC;
- }
- else
- ret = 0;
- dqstats.writes++;
-
- return ret;
+ return qtree_write_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv, dquot);
}
-/* Free dquot entry in data block */
-static int free_dqentry(struct dquot *dquot, uint blk)
-{
- struct super_block *sb = dquot->dq_sb;
- int type = dquot->dq_type;
- struct v2_disk_dqdbheader *dh;
- dqbuf_t buf = getdqbuf();
- int ret = 0;
-
- if (!buf)
- return -ENOMEM;
- if (dquot->dq_off >> V2_DQBLKSIZE_BITS != blk) {
- printk(KERN_ERR "VFS: Quota structure has offset to other "
- "block (%u) than it should (%u).\n", blk,
- (uint)(dquot->dq_off >> V2_DQBLKSIZE_BITS));
- goto out_buf;
- }
- if ((ret = read_blk(sb, type, blk, buf)) < 0) {
- printk(KERN_ERR "VFS: Can't read quota data block %u\n", blk);
- goto out_buf;
- }
- dh = (struct v2_disk_dqdbheader *)buf;
- le16_add_cpu(&dh->dqdh_entries, -1);
- if (!le16_to_cpu(dh->dqdh_entries)) { /* Block got free? */
- if ((ret = remove_free_dqentry(sb, type, buf, blk)) < 0 ||
- (ret = put_free_dqblk(sb, type, buf, blk)) < 0) {
- printk(KERN_ERR "VFS: Can't move quota data block (%u) "
- "to free list.\n", blk);
- goto out_buf;
- }
- }
- else {
- memset(buf+(dquot->dq_off & ((1 << V2_DQBLKSIZE_BITS)-1)), 0,
- sizeof(struct v2_disk_dqblk));
- if (le16_to_cpu(dh->dqdh_entries) == V2_DQSTRINBLK-1) {
- /* Insert will write block itself */
- if ((ret = insert_free_dqentry(sb, type, buf, blk)) < 0) {
- printk(KERN_ERR "VFS: Can't insert quota data block (%u) to free entry list.\n", blk);
- goto out_buf;
- }
- }
- else
- if ((ret = write_blk(sb, type, blk, buf)) < 0) {
- printk(KERN_ERR "VFS: Can't write quota data "
- "block %u\n", blk);
- goto out_buf;
- }
- }
- dquot->dq_off = 0; /* Quota is now unattached */
-out_buf:
- freedqbuf(buf);
- return ret;
-}
-
-/* Remove reference to dquot from tree */
-static int remove_tree(struct dquot *dquot, uint *blk, int depth)
-{
- struct super_block *sb = dquot->dq_sb;
- int type = dquot->dq_type;
- dqbuf_t buf = getdqbuf();
- int ret = 0;
- uint newblk;
- __le32 *ref = (__le32 *)buf;
-
- if (!buf)
- return -ENOMEM;
- if ((ret = read_blk(sb, type, *blk, buf)) < 0) {
- printk(KERN_ERR "VFS: Can't read quota data block %u\n", *blk);
- goto out_buf;
- }
- newblk = le32_to_cpu(ref[GETIDINDEX(dquot->dq_id, depth)]);
- if (depth == V2_DQTREEDEPTH-1) {
- ret = free_dqentry(dquot, newblk);
- newblk = 0;
- }
- else
- ret = remove_tree(dquot, &newblk, depth+1);
- if (ret >= 0 && !newblk) {
- int i;
- ref[GETIDINDEX(dquot->dq_id, depth)] = cpu_to_le32(0);
- for (i = 0; i < V2_DQBLKSIZE && !buf[i]; i++); /* Block got empty? */
- /* Don't put the root block into the free block list */
- if (i == V2_DQBLKSIZE && *blk != V2_DQTREEOFF) {
- put_free_dqblk(sb, type, buf, *blk);
- *blk = 0;
- }
- else
- if ((ret = write_blk(sb, type, *blk, buf)) < 0)
- printk(KERN_ERR "VFS: Can't write quota tree "
- "block %u.\n", *blk);
- }
-out_buf:
- freedqbuf(buf);
- return ret;
-}
-
-/* Delete dquot from tree */
-static int v2_delete_dquot(struct dquot *dquot)
-{
- uint tmp = V2_DQTREEOFF;
-
- if (!dquot->dq_off) /* Even not allocated? */
- return 0;
- return remove_tree(dquot, &tmp, 0);
-}
-
-/* Find entry in block */
-static loff_t find_block_dqentry(struct dquot *dquot, uint blk)
-{
- dqbuf_t buf = getdqbuf();
- loff_t ret = 0;
- int i;
- struct v2_disk_dqblk *ddquot = GETENTRIES(buf);
-
- if (!buf)
- return -ENOMEM;
- if ((ret = read_blk(dquot->dq_sb, dquot->dq_type, blk, buf)) < 0) {
- printk(KERN_ERR "VFS: Can't read quota tree block %u.\n", blk);
- goto out_buf;
- }
- if (dquot->dq_id)
- for (i = 0; i < V2_DQSTRINBLK &&
- le32_to_cpu(ddquot[i].dqb_id) != dquot->dq_id; i++);
- else { /* ID 0 as a bit more complicated searching... */
- struct v2_disk_dqblk fakedquot;
-
- memset(&fakedquot, 0, sizeof(struct v2_disk_dqblk));
- for (i = 0; i < V2_DQSTRINBLK; i++)
- if (!le32_to_cpu(ddquot[i].dqb_id) &&
- memcmp(&fakedquot, ddquot+i, sizeof(struct v2_disk_dqblk)))
- break;
- }
- if (i == V2_DQSTRINBLK) {
- printk(KERN_ERR "VFS: Quota for id %u referenced "
- "but not present.\n", dquot->dq_id);
- ret = -EIO;
- goto out_buf;
- }
- else
- ret = (blk << V2_DQBLKSIZE_BITS) + sizeof(struct
- v2_disk_dqdbheader) + i * sizeof(struct v2_disk_dqblk);
-out_buf:
- freedqbuf(buf);
- return ret;
-}
-
-/* Find entry for given id in the tree */
-static loff_t find_tree_dqentry(struct dquot *dquot, uint blk, int depth)
-{
- dqbuf_t buf = getdqbuf();
- loff_t ret = 0;
- __le32 *ref = (__le32 *)buf;
-
- if (!buf)
- return -ENOMEM;
- if ((ret = read_blk(dquot->dq_sb, dquot->dq_type, blk, buf)) < 0) {
- printk(KERN_ERR "VFS: Can't read quota tree block %u.\n", blk);
- goto out_buf;
- }
- ret = 0;
- blk = le32_to_cpu(ref[GETIDINDEX(dquot->dq_id, depth)]);
- if (!blk) /* No reference? */
- goto out_buf;
- if (depth < V2_DQTREEDEPTH-1)
- ret = find_tree_dqentry(dquot, blk, depth+1);
- else
- ret = find_block_dqentry(dquot, blk);
-out_buf:
- freedqbuf(buf);
- return ret;
-}
-
-/* Find entry for given id in the tree - wrapper function */
-static inline loff_t find_dqentry(struct dquot *dquot)
-{
- return find_tree_dqentry(dquot, V2_DQTREEOFF, 0);
-}
-
-static int v2_read_dquot(struct dquot *dquot)
+static int v2_release_dquot(struct dquot *dquot)
{
- int type = dquot->dq_type;
- loff_t offset;
- struct v2_disk_dqblk ddquot, empty;
- int ret = 0;
-
-#ifdef __QUOTA_V2_PARANOIA
- /* Invalidated quota? */
- if (!dquot->dq_sb || !sb_dqopt(dquot->dq_sb)->files[type]) {
- printk(KERN_ERR "VFS: Quota invalidated while reading!\n");
- return -EIO;
- }
-#endif
- offset = find_dqentry(dquot);
- if (offset <= 0) { /* Entry not present? */
- if (offset < 0)
- printk(KERN_ERR "VFS: Can't read quota "
- "structure for id %u.\n", dquot->dq_id);
- dquot->dq_off = 0;
- set_bit(DQ_FAKE_B, &dquot->dq_flags);
- memset(&dquot->dq_dqb, 0, sizeof(struct mem_dqblk));
- ret = offset;
- }
- else {
- dquot->dq_off = offset;
- if ((ret = dquot->dq_sb->s_op->quota_read(dquot->dq_sb, type,
- (char *)&ddquot, sizeof(struct v2_disk_dqblk), offset))
- != sizeof(struct v2_disk_dqblk)) {
- if (ret >= 0)
- ret = -EIO;
- printk(KERN_ERR "VFS: Error while reading quota "
- "structure for id %u.\n", dquot->dq_id);
- memset(&ddquot, 0, sizeof(struct v2_disk_dqblk));
- }
- else {
- ret = 0;
- /* We need to escape back all-zero structure */
- memset(&empty, 0, sizeof(struct v2_disk_dqblk));
- empty.dqb_itime = cpu_to_le64(1);
- if (!memcmp(&empty, &ddquot, sizeof(struct v2_disk_dqblk)))
- ddquot.dqb_itime = 0;
- }
- disk2memdqb(&dquot->dq_dqb, &ddquot);
- if (!dquot->dq_dqb.dqb_bhardlimit &&
- !dquot->dq_dqb.dqb_bsoftlimit &&
- !dquot->dq_dqb.dqb_ihardlimit &&
- !dquot->dq_dqb.dqb_isoftlimit)
- set_bit(DQ_FAKE_B, &dquot->dq_flags);
- }
- dqstats.reads++;
-
- return ret;
+ return qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv, dquot);
}
-/* Check whether dquot should not be deleted. We know we are
- * the only one operating on dquot (thanks to dq_lock) */
-static int v2_release_dquot(struct dquot *dquot)
+static int v2_free_file_info(struct super_block *sb, int type)
{
- if (test_bit(DQ_FAKE_B, &dquot->dq_flags) && !(dquot->dq_dqb.dqb_curinodes | dquot->dq_dqb.dqb_curspace))
- return v2_delete_dquot(dquot);
+ kfree(sb_dqinfo(sb, type)->dqi_priv);
return 0;
}
@@ -673,7 +210,7 @@ static struct quota_format_ops v2_format_ops = {
.check_quota_file = v2_check_quota_file,
.read_file_info = v2_read_file_info,
.write_file_info = v2_write_file_info,
- .free_file_info = NULL,
+ .free_file_info = v2_free_file_info,
.read_dqblk = v2_read_dquot,
.commit_dqblk = v2_write_dquot,
.release_dqblk = v2_release_dquot,
diff --git a/fs/quotaio_v1.h b/fs/quotaio_v1.h
new file mode 100644
index 00000000000..746654b5de7
--- /dev/null
+++ b/fs/quotaio_v1.h
@@ -0,0 +1,33 @@
+#ifndef _LINUX_QUOTAIO_V1_H
+#define _LINUX_QUOTAIO_V1_H
+
+#include <linux/types.h>
+
+/*
+ * The following constants define the amount of time given a user
+ * before the soft limits are treated as hard limits (usually resulting
+ * in an allocation failure). The timer is started when the user crosses
+ * their soft limit, it is reset when they go below their soft limit.
+ */
+#define MAX_IQ_TIME 604800 /* (7*24*60*60) 1 week */
+#define MAX_DQ_TIME 604800 /* (7*24*60*60) 1 week */
+
+/*
+ * The following structure defines the format of the disk quota file
+ * (as it appears on disk) - the file is an array of these structures
+ * indexed by user or group number.
+ */
+struct v1_disk_dqblk {
+ __u32 dqb_bhardlimit; /* absolute limit on disk blks alloc */
+ __u32 dqb_bsoftlimit; /* preferred limit on disk blks */
+ __u32 dqb_curblocks; /* current block count */
+ __u32 dqb_ihardlimit; /* absolute limit on allocated inodes */
+ __u32 dqb_isoftlimit; /* preferred inode limit */
+ __u32 dqb_curinodes; /* current # allocated inodes */
+ time_t dqb_btime; /* time limit for excessive disk use */
+ time_t dqb_itime; /* time limit for excessive inode use */
+};
+
+#define v1_dqoff(UID) ((loff_t)((UID) * sizeof (struct v1_disk_dqblk)))
+
+#endif /* _LINUX_QUOTAIO_V1_H */
diff --git a/fs/quotaio_v2.h b/fs/quotaio_v2.h
new file mode 100644
index 00000000000..530fe580685
--- /dev/null
+++ b/fs/quotaio_v2.h
@@ -0,0 +1,60 @@
+/*
+ * Definitions of structures for vfsv0 quota format
+ */
+
+#ifndef _LINUX_QUOTAIO_V2_H
+#define _LINUX_QUOTAIO_V2_H
+
+#include <linux/types.h>
+#include <linux/quota.h>
+
+/*
+ * Definitions of magics and versions of current quota files
+ */
+#define V2_INITQMAGICS {\
+ 0xd9c01f11, /* USRQUOTA */\
+ 0xd9c01927 /* GRPQUOTA */\
+}
+
+#define V2_INITQVERSIONS {\
+ 0, /* USRQUOTA */\
+ 0 /* GRPQUOTA */\
+}
+
+/* First generic header */
+struct v2_disk_dqheader {
+ __le32 dqh_magic; /* Magic number identifying file */
+ __le32 dqh_version; /* File version */
+};
+
+/*
+ * The following structure defines the format of the disk quota file
+ * (as it appears on disk) - the file is a radix tree whose leaves point
+ * to blocks of these structures.
+ */
+struct v2_disk_dqblk {
+ __le32 dqb_id; /* id this quota applies to */
+ __le32 dqb_ihardlimit; /* absolute limit on allocated inodes */
+ __le32 dqb_isoftlimit; /* preferred inode limit */
+ __le32 dqb_curinodes; /* current # allocated inodes */
+ __le32 dqb_bhardlimit; /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
+ __le32 dqb_bsoftlimit; /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
+ __le64 dqb_curspace; /* current space occupied (in bytes) */
+ __le64 dqb_btime; /* time limit for excessive disk use */
+ __le64 dqb_itime; /* time limit for excessive inode use */
+};
+
+/* Header with type and version specific information */
+struct v2_disk_dqinfo {
+ __le32 dqi_bgrace; /* Time before block soft limit becomes hard limit */
+ __le32 dqi_igrace; /* Time before inode soft limit becomes hard limit */
+ __le32 dqi_flags; /* Flags for quotafile (DQF_*) */
+ __le32 dqi_blocks; /* Number of blocks in file */
+ __le32 dqi_free_blk; /* Number of first free block in the list */
+ __le32 dqi_free_entry; /* Number of block with at least one free entry */
+};
+
+#define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */
+#define V2_DQBLKSIZE_BITS 10 /* Size of leaf block in tree */
+
+#endif /* _LINUX_QUOTAIO_V2_H */
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index a83a3518ae3..b7e6ac706b8 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -57,7 +57,6 @@ struct inode *ramfs_get_inode(struct super_block *sb, int mode, dev_t dev)
inode->i_mode = mode;
inode->i_uid = current_fsuid();
inode->i_gid = current_fsgid();
- inode->i_blocks = 0;
inode->i_mapping->a_ops = &ramfs_aops;
inode->i_mapping->backing_dev_info = &ramfs_backing_dev_info;
mapping_set_gfp_mask(inode->i_mapping, GFP_HIGHUSER);
diff --git a/fs/read_write.c b/fs/read_write.c
index 969a6d9c020..5cc6924eb15 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -50,6 +50,14 @@ generic_file_llseek_unlocked(struct file *file, loff_t offset, int origin)
offset += inode->i_size;
break;
case SEEK_CUR:
+ /*
+ * Here we special-case the lseek(fd, 0, SEEK_CUR)
+ * position-querying operation. Avoid rewriting the "same"
+ * f_pos value back to the file because a concurrent read(),
+ * write() or lseek() might have altered it
+ */
+ if (offset == 0)
+ return file->f_pos;
offset += file->f_pos;
break;
}
@@ -105,6 +113,10 @@ loff_t default_llseek(struct file *file, loff_t offset, int origin)
offset += i_size_read(file->f_path.dentry->d_inode);
break;
case SEEK_CUR:
+ if (offset == 0) {
+ retval = file->f_pos;
+ goto out;
+ }
offset += file->f_pos;
}
retval = -EINVAL;
@@ -115,6 +127,7 @@ loff_t default_llseek(struct file *file, loff_t offset, int origin)
}
retval = offset;
}
+out:
unlock_kernel();
return retval;
}
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index ed04f47007f..55fce92cdf1 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1782,6 +1782,12 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
goto out_bad_inode;
}
args.objectid = inode->i_ino = le32_to_cpu(ih.ih_key.k_objectid);
+ if (old_format_only(sb))
+ make_le_item_head(&ih, NULL, KEY_FORMAT_3_5, SD_OFFSET,
+ TYPE_STAT_DATA, SD_V1_SIZE, MAX_US_INT);
+ else
+ make_le_item_head(&ih, NULL, KEY_FORMAT_3_6, SD_OFFSET,
+ TYPE_STAT_DATA, SD_SIZE, MAX_US_INT);
memcpy(INODE_PKEY(inode), &(ih.ih_key), KEY_SIZE);
args.dirid = le32_to_cpu(ih.ih_key.k_dir_id);
if (insert_inode_locked4(inode, args.objectid,
@@ -1834,13 +1840,6 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
reiserfs_init_acl_default(inode);
reiserfs_init_xattr_rwsem(inode);
- if (old_format_only(sb))
- make_le_item_head(&ih, NULL, KEY_FORMAT_3_5, SD_OFFSET,
- TYPE_STAT_DATA, SD_V1_SIZE, MAX_US_INT);
- else
- make_le_item_head(&ih, NULL, KEY_FORMAT_3_6, SD_OFFSET,
- TYPE_STAT_DATA, SD_SIZE, MAX_US_INT);
-
/* key to search for correct place for new stat data */
_make_cpu_key(&key, KEY_FORMAT_3_6, le32_to_cpu(ih.ih_key.k_dir_id),
le32_to_cpu(ih.ih_key.k_objectid), SD_OFFSET,
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 663a91f5dce..c55651f1407 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -649,6 +649,8 @@ static struct dquot_operations reiserfs_quota_operations = {
.release_dquot = reiserfs_release_dquot,
.mark_dirty = reiserfs_mark_dquot_dirty,
.write_info = reiserfs_write_info,
+ .alloc_dquot = dquot_alloc,
+ .destroy_dquot = dquot_destroy,
};
static struct quotactl_ops reiserfs_qctl_operations = {
@@ -994,8 +996,7 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin
if (c == 'u' || c == 'g') {
int qtype = c == 'u' ? USRQUOTA : GRPQUOTA;
- if ((sb_any_quota_enabled(s) ||
- sb_any_quota_suspended(s)) &&
+ if (sb_any_quota_loaded(s) &&
(!*arg != !REISERFS_SB(s)->s_qf_names[qtype])) {
reiserfs_warning(s,
"reiserfs_parse_options: cannot change journaled quota options when quota turned on.");
@@ -1041,8 +1042,7 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin
"reiserfs_parse_options: unknown quota format specified.");
return 0;
}
- if ((sb_any_quota_enabled(s) ||
- sb_any_quota_suspended(s)) &&
+ if (sb_any_quota_loaded(s) &&
*qfmt != REISERFS_SB(s)->s_jquota_fmt) {
reiserfs_warning(s,
"reiserfs_parse_options: cannot change journaled quota options when quota turned on.");
@@ -1067,7 +1067,7 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin
}
/* This checking is not precise wrt the quota type but for our purposes it is sufficient */
if (!(*mount_options & (1 << REISERFS_QUOTA))
- && sb_any_quota_enabled(s)) {
+ && sb_any_quota_loaded(s)) {
reiserfs_warning(s,
"reiserfs_parse_options: quota options must be present when quota is turned on.");
return 0;
diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index 60d2f822e87..98a232f7196 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -490,7 +490,7 @@ static mode_t romfs_modemap[] =
static struct inode *
romfs_iget(struct super_block *sb, unsigned long ino)
{
- int nextfh;
+ int nextfh, ret;
struct romfs_inode ri;
struct inode *i;
@@ -524,14 +524,13 @@ romfs_iget(struct super_block *sb, unsigned long ino)
i->i_size = be32_to_cpu(ri.size);
i->i_mtime.tv_sec = i->i_atime.tv_sec = i->i_ctime.tv_sec = 0;
i->i_mtime.tv_nsec = i->i_atime.tv_nsec = i->i_ctime.tv_nsec = 0;
- i->i_uid = i->i_gid = 0;
/* Precalculate the data offset */
- ino = romfs_strnlen(i, ino+ROMFH_SIZE, ROMFS_MAXFN);
- if (ino >= 0)
- ino = ((ROMFH_SIZE+ino+1+ROMFH_PAD)&ROMFH_MASK);
- else
- ino = 0;
+ ret = romfs_strnlen(i, ino + ROMFH_SIZE, ROMFS_MAXFN);
+ if (ret >= 0)
+ ino = (ROMFH_SIZE + ret + 1 + ROMFH_PAD) & ROMFH_MASK;
+ else
+ ino = 0;
ROMFS_I(i)->i_metasize = ino;
ROMFS_I(i)->i_dataoffset = ino+(i->i_ino&ROMFH_MASK);
diff --git a/fs/select.c b/fs/select.c
index 87df51eadcf..08b91beed80 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -109,11 +109,11 @@ static void __pollwait(struct file *filp, wait_queue_head_t *wait_address,
void poll_initwait(struct poll_wqueues *pwq)
{
init_poll_funcptr(&pwq->pt, __pollwait);
+ pwq->polling_task = current;
pwq->error = 0;
pwq->table = NULL;
pwq->inline_index = 0;
}
-
EXPORT_SYMBOL(poll_initwait);
static void free_poll_entry(struct poll_table_entry *entry)
@@ -142,12 +142,10 @@ void poll_freewait(struct poll_wqueues *pwq)
free_page((unsigned long) old);
}
}
-
EXPORT_SYMBOL(poll_freewait);
-static struct poll_table_entry *poll_get_entry(poll_table *_p)
+static struct poll_table_entry *poll_get_entry(struct poll_wqueues *p)
{
- struct poll_wqueues *p = container_of(_p, struct poll_wqueues, pt);
struct poll_table_page *table = p->table;
if (p->inline_index < N_INLINE_POLL_ENTRIES)
@@ -159,7 +157,6 @@ static struct poll_table_entry *poll_get_entry(poll_table *_p)
new_table = (struct poll_table_page *) __get_free_page(GFP_KERNEL);
if (!new_table) {
p->error = -ENOMEM;
- __set_current_state(TASK_RUNNING);
return NULL;
}
new_table->entry = new_table->entries;
@@ -171,20 +168,75 @@ static struct poll_table_entry *poll_get_entry(poll_table *_p)
return table->entry++;
}
+static int pollwake(wait_queue_t *wait, unsigned mode, int sync, void *key)
+{
+ struct poll_wqueues *pwq = wait->private;
+ DECLARE_WAITQUEUE(dummy_wait, pwq->polling_task);
+
+ /*
+ * Although this function is called under waitqueue lock, LOCK
+ * doesn't imply write barrier and the users expect write
+ * barrier semantics on wakeup functions. The following
+ * smp_wmb() is equivalent to smp_wmb() in try_to_wake_up()
+ * and is paired with set_mb() in poll_schedule_timeout.
+ */
+ smp_wmb();
+ pwq->triggered = 1;
+
+ /*
+ * Perform the default wake up operation using a dummy
+ * waitqueue.
+ *
+ * TODO: This is hacky but there currently is no interface to
+ * pass in @sync. @sync is scheduled to be removed and once
+ * that happens, wake_up_process() can be used directly.
+ */
+ return default_wake_function(&dummy_wait, mode, sync, key);
+}
+
/* Add a new entry */
static void __pollwait(struct file *filp, wait_queue_head_t *wait_address,
poll_table *p)
{
- struct poll_table_entry *entry = poll_get_entry(p);
+ struct poll_wqueues *pwq = container_of(p, struct poll_wqueues, pt);
+ struct poll_table_entry *entry = poll_get_entry(pwq);
if (!entry)
return;
get_file(filp);
entry->filp = filp;
entry->wait_address = wait_address;
- init_waitqueue_entry(&entry->wait, current);
+ init_waitqueue_func_entry(&entry->wait, pollwake);
+ entry->wait.private = pwq;
add_wait_queue(wait_address, &entry->wait);
}
+int poll_schedule_timeout(struct poll_wqueues *pwq, int state,
+ ktime_t *expires, unsigned long slack)
+{
+ int rc = -EINTR;
+
+ set_current_state(state);
+ if (!pwq->triggered)
+ rc = schedule_hrtimeout_range(expires, slack, HRTIMER_MODE_ABS);
+ __set_current_state(TASK_RUNNING);
+
+ /*
+ * Prepare for the next iteration.
+ *
+ * The following set_mb() serves two purposes. First, it's
+ * the counterpart rmb of the wmb in pollwake() such that data
+ * written before wake up is always visible after wake up.
+ * Second, the full barrier guarantees that triggered clearing
+ * doesn't pass event check of the next iteration. Note that
+ * this problem doesn't exist for the first iteration as
+ * add_wait_queue() has full barrier semantics.
+ */
+ set_mb(pwq->triggered, 0);
+
+ return rc;
+}
+EXPORT_SYMBOL(poll_schedule_timeout);
+
/**
* poll_select_set_timeout - helper function to setup the timeout value
* @to: pointer to timespec variable for the final timeout
@@ -340,8 +392,6 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
for (;;) {
unsigned long *rinp, *routp, *rexp, *inp, *outp, *exp;
- set_current_state(TASK_INTERRUPTIBLE);
-
inp = fds->in; outp = fds->out; exp = fds->ex;
rinp = fds->res_in; routp = fds->res_out; rexp = fds->res_ex;
@@ -411,10 +461,10 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
to = &expire;
}
- if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS))
+ if (!poll_schedule_timeout(&table, TASK_INTERRUPTIBLE,
+ to, slack))
timed_out = 1;
}
- __set_current_state(TASK_RUNNING);
poll_freewait(&table);
@@ -666,7 +716,6 @@ static int do_poll(unsigned int nfds, struct poll_list *list,
for (;;) {
struct poll_list *walk;
- set_current_state(TASK_INTERRUPTIBLE);
for (walk = list; walk != NULL; walk = walk->next) {
struct pollfd * pfd, * pfd_end;
@@ -709,10 +758,9 @@ static int do_poll(unsigned int nfds, struct poll_list *list,
to = &expire;
}
- if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS))
+ if (!poll_schedule_timeout(wait, TASK_INTERRUPTIBLE, to, slack))
timed_out = 1;
}
- __set_current_state(TASK_RUNNING);
return count;
}
diff --git a/fs/splice.c b/fs/splice.c
index 1abab5cee4b..a54b3e3f10a 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -21,6 +21,7 @@
#include <linux/file.h>
#include <linux/pagemap.h>
#include <linux/splice.h>
+#include <linux/memcontrol.h>
#include <linux/mm_inline.h>
#include <linux/swap.h>
#include <linux/writeback.h>
diff --git a/fs/stat.c b/fs/stat.c
index 7c46fbeb8b7..7e12a6f8279 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -305,7 +305,7 @@ asmlinkage long sys_readlinkat(int dfd, const char __user *pathname,
struct inode *inode = path.dentry->d_inode;
error = -EINVAL;
- if (inode->i_op && inode->i_op->readlink) {
+ if (inode->i_op->readlink) {
error = security_inode_readlink(path.dentry);
if (!error) {
touch_atime(path.mnt, path.dentry);
diff --git a/fs/super.c b/fs/super.c
index d5fd4498548..ed080c41716 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -38,6 +38,7 @@
#include <linux/kobject.h>
#include <linux/mutex.h>
#include <linux/file.h>
+#include <linux/async.h>
#include <asm/uaccess.h>
#include "internal.h"
@@ -71,6 +72,7 @@ static struct super_block *alloc_super(struct file_system_type *type)
INIT_HLIST_HEAD(&s->s_anon);
INIT_LIST_HEAD(&s->s_inodes);
INIT_LIST_HEAD(&s->s_dentry_lru);
+ INIT_LIST_HEAD(&s->s_async_list);
init_rwsem(&s->s_umount);
mutex_init(&s->s_lock);
lockdep_set_class(&s->s_umount, &type->s_umount_key);
@@ -289,11 +291,18 @@ void generic_shutdown_super(struct super_block *sb)
{
const struct super_operations *sop = sb->s_op;
+
if (sb->s_root) {
shrink_dcache_for_umount(sb);
fsync_super(sb);
lock_super(sb);
sb->s_flags &= ~MS_ACTIVE;
+
+ /*
+ * wait for asynchronous fs operations to finish before going further
+ */
+ async_synchronize_full_special(&sb->s_async_list);
+
/* bad name - it should be evict_inodes() */
invalidate_inodes(sb);
lock_kernel();
@@ -461,6 +470,7 @@ restart:
sb->s_count++;
spin_unlock(&sb_lock);
down_read(&sb->s_umount);
+ async_synchronize_full_special(&sb->s_async_list);
if (sb->s_root && (wait || sb->s_dirt))
sb->s_op->sync_fs(sb, wait);
up_read(&sb->s_umount);
diff --git a/fs/sync.c b/fs/sync.c
index 2967562d416..ac02b56548b 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -75,14 +75,39 @@ int file_fsync(struct file *filp, struct dentry *dentry, int datasync)
return ret;
}
-long do_fsync(struct file *file, int datasync)
+/**
+ * vfs_fsync - perform a fsync or fdatasync on a file
+ * @file: file to sync
+ * @dentry: dentry of @file
+ * @data: only perform a fdatasync operation
+ *
+ * Write back data and metadata for @file to disk. If @datasync is
+ * set only metadata needed to access modified file data is written.
+ *
+ * In case this function is called from nfsd @file may be %NULL and
+ * only @dentry is set. This can only happen when the filesystem
+ * implements the export_operations API.
+ */
+int vfs_fsync(struct file *file, struct dentry *dentry, int datasync)
{
- int ret;
- int err;
- struct address_space *mapping = file->f_mapping;
+ const struct file_operations *fop;
+ struct address_space *mapping;
+ int err, ret;
+
+ /*
+ * Get mapping and operations from the file in case we have
+ * as file, or get the default values for them in case we
+ * don't have a struct file available. Damn nfsd..
+ */
+ if (file) {
+ mapping = file->f_mapping;
+ fop = file->f_op;
+ } else {
+ mapping = dentry->d_inode->i_mapping;
+ fop = dentry->d_inode->i_fop;
+ }
- if (!file->f_op || !file->f_op->fsync) {
- /* Why? We can still call filemap_fdatawrite */
+ if (!fop || !fop->fsync) {
ret = -EINVAL;
goto out;
}
@@ -94,7 +119,7 @@ long do_fsync(struct file *file, int datasync)
* livelocks in fsync_buffers_list().
*/
mutex_lock(&mapping->host->i_mutex);
- err = file->f_op->fsync(file, file->f_path.dentry, datasync);
+ err = fop->fsync(file, dentry, datasync);
if (!ret)
ret = err;
mutex_unlock(&mapping->host->i_mutex);
@@ -104,15 +129,16 @@ long do_fsync(struct file *file, int datasync)
out:
return ret;
}
+EXPORT_SYMBOL(vfs_fsync);
-static long __do_fsync(unsigned int fd, int datasync)
+static int do_fsync(unsigned int fd, int datasync)
{
struct file *file;
int ret = -EBADF;
file = fget(fd);
if (file) {
- ret = do_fsync(file, datasync);
+ ret = vfs_fsync(file, file->f_path.dentry, datasync);
fput(file);
}
return ret;
@@ -120,12 +146,12 @@ static long __do_fsync(unsigned int fd, int datasync)
asmlinkage long sys_fsync(unsigned int fd)
{
- return __do_fsync(fd, 0);
+ return do_fsync(fd, 0);
}
asmlinkage long sys_fdatasync(unsigned int fd)
{
- return __do_fsync(fd, 1);
+ return do_fsync(fd, 1);
}
/*
@@ -269,7 +295,7 @@ int do_sync_mapping_range(struct address_space *mapping, loff_t offset,
if (flags & SYNC_FILE_RANGE_WRITE) {
ret = __filemap_fdatawrite_range(mapping, offset, endbyte,
- WB_SYNC_NONE);
+ WB_SYNC_ALL);
if (ret < 0)
goto out;
}
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index eb53c632f85..dfa3d94cfc7 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -107,8 +107,6 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
static inline void set_default_inode_attr(struct inode * inode, mode_t mode)
{
inode->i_mode = mode;
- inode->i_uid = 0;
- inode->i_gid = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
}
@@ -149,7 +147,6 @@ static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
{
struct bin_attribute *bin_attr;
- inode->i_blocks = 0;
inode->i_mapping->a_ops = &sysfs_aops;
inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info;
inode->i_op = &sysfs_inode_operations;
diff --git a/fs/ubifs/Kconfig b/fs/ubifs/Kconfig
index 91ceeda7e5b..e35b54d5059 100644
--- a/fs/ubifs/Kconfig
+++ b/fs/ubifs/Kconfig
@@ -40,7 +40,7 @@ config UBIFS_FS_ZLIB
depends on UBIFS_FS
default y
help
- Zlib copresses better then LZO but it is slower. Say 'Y' if unsure.
+ Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
# Debugging-related stuff
config UBIFS_FS_DEBUG
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index 0e5e54d8292..175f9c590b7 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -142,7 +142,7 @@ static long long get_liability(struct ubifs_info *c)
*
* This function is called when an operation cannot be budgeted because there
* is supposedly no free space. But in most cases there is some free space:
- * o budgeting is pessimistic, so it always budgets more then it is actually
+ * o budgeting is pessimistic, so it always budgets more than it is actually
* needed, so shrinking the liability is one way to make free space - the
* cached data will take less space then it was budgeted for;
* o GC may turn some dark space into free space (budgeting treats dark space
@@ -606,7 +606,7 @@ void ubifs_release_budget(struct ubifs_info *c, struct ubifs_budget_req *req)
* @c: UBIFS file-system description object
*
* This function converts budget which was allocated for a new page of data to
- * the budget of changing an existing page of data. The latter is smaller then
+ * the budget of changing an existing page of data. The latter is smaller than
* the former, so this function only does simple re-calculation and does not
* involve any write-back.
*/
diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index 0bef6501d58..9832f9abe28 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -45,7 +45,7 @@
#define SMALL_NODE_WM UBIFS_MAX_DENT_NODE_SZ
/*
- * GC may need to move more then one LEB to make progress. The below constants
+ * GC may need to move more than one LEB to make progress. The below constants
* define "soft" and "hard" limits on the number of LEBs the garbage collector
* may move.
*/
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index 10ae25b7d1d..9b7c54e0cd2 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -191,7 +191,7 @@ again:
if (wbuf->lnum != -1 && avail >= len) {
/*
* Someone else has switched the journal head and we have
- * enough space now. This happens when more then one process is
+ * enough space now. This happens when more than one process is
* trying to write to the same journal head at the same time.
*/
dbg_jnl("return LEB %d back, already have LEB %d:%d",
diff --git a/fs/ubifs/shrinker.c b/fs/ubifs/shrinker.c
index f248533841a..e7bab52a141 100644
--- a/fs/ubifs/shrinker.c
+++ b/fs/ubifs/shrinker.c
@@ -151,7 +151,7 @@ static int shrink_tnc(struct ubifs_info *c, int nr, int age, int *contention)
* @contention: if any contention, this is set to %1
*
* This function walks the list of mounted UBIFS file-systems and frees clean
- * znodes which are older then @age, until at least @nr znodes are freed.
+ * znodes which are older than @age, until at least @nr znodes are freed.
* Returns the number of freed znodes.
*/
static int shrink_tnc_trees(int nr, int age, int *contention)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 0d7564b95f8..89556ee7251 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -432,12 +432,19 @@ static int ubifs_sync_fs(struct super_block *sb, int wait)
int i, err;
struct ubifs_info *c = sb->s_fs_info;
struct writeback_control wbc = {
- .sync_mode = wait ? WB_SYNC_ALL : WB_SYNC_HOLD,
+ .sync_mode = wait ? WB_SYNC_ALL : WB_SYNC_NONE,
.range_start = 0,
.range_end = LLONG_MAX,
.nr_to_write = LONG_MAX,
};
+ /*
+ * Note by akpm about WB_SYNC_NONE used above: zero @wait is just an
+ * advisory thing to help the file system shove lots of data into the
+ * queues. If some gets missed then it'll be picked up on the second
+ * '->sync_fs()' call, with non-zero @wait.
+ */
+
if (sb->s_flags & MS_RDONLY)
return 0;
diff --git a/fs/xattr.c b/fs/xattr.c
index 468377e6653..237804cd6b5 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -175,7 +175,7 @@ vfs_listxattr(struct dentry *d, char *list, size_t size)
if (error)
return error;
error = -EOPNOTSUPP;
- if (d->d_inode->i_op && d->d_inode->i_op->listxattr) {
+ if (d->d_inode->i_op->listxattr) {
error = d->d_inode->i_op->listxattr(d, list, size);
} else {
error = security_inode_listsecurity(d->d_inode, list, size);
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 36f6cc703ef..be846d606ae 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -1348,7 +1348,7 @@ xfs_finish_flags(
{
int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
- /* Fail a mount where the logbuf is smaller then the log stripe */
+ /* Fail a mount where the logbuf is smaller than the log stripe */
if (xfs_sb_version_haslogv2(&mp->m_sb)) {
if (mp->m_logbsize <= 0 &&
mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {