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authorTakashi Iwai <tiwai@suse.de>2008-12-01 18:02:17 +0100
committerTakashi Iwai <tiwai@suse.de>2008-12-01 18:02:17 +0100
commit3af4182cc5be7d5505f9801ee3297373f1872446 (patch)
tree214348d40ed547a72f9612a7e5c94a01afded812 /fs
parentf5d4c67e41a262f0cdfaec1bb0fa8e5952187ef9 (diff)
parentc07f62e5f18123103459ff74e86af1518a5b8af5 (diff)
Merge branch 'upstream' into topic/asoc
Diffstat (limited to 'fs')
-rw-r--r--fs/Makefile2
-rw-r--r--fs/autofs4/dev-ioctl.c5
-rw-r--r--fs/autofs4/expire.c19
-rw-r--r--fs/block_dev.c23
-rw-r--r--fs/buffer.c1
-rw-r--r--fs/cifs/CHANGES10
-rw-r--r--fs/cifs/cifs_debug.c277
-rw-r--r--fs/cifs/cifs_dfs_ref.c71
-rw-r--r--fs/cifs/cifs_spnego.c4
-rw-r--r--fs/cifs/cifsfs.c30
-rw-r--r--fs/cifs/cifsglob.h51
-rw-r--r--fs/cifs/cifsproto.h2
-rw-r--r--fs/cifs/cifssmb.c136
-rw-r--r--fs/cifs/connect.c873
-rw-r--r--fs/cifs/file.c107
-rw-r--r--fs/cifs/inode.c4
-rw-r--r--fs/cifs/misc.c93
-rw-r--r--fs/cifs/readdir.c5
-rw-r--r--fs/cifs/transport.c48
-rw-r--r--fs/coda/psdev.c2
-rw-r--r--fs/dlm/lockspace.c2
-rw-r--r--fs/ecryptfs/crypto.c15
-rw-r--r--fs/ecryptfs/keystore.c31
-rw-r--r--fs/ext3/super.c28
-rw-r--r--fs/ext4/balloc.c77
-rw-r--r--fs/ext4/ext4.h3
-rw-r--r--fs/ext4/ialloc.c2
-rw-r--r--fs/ext4/inode.c7
-rw-r--r--fs/ext4/mballoc.c1
-rw-r--r--fs/ext4/super.c35
-rw-r--r--fs/fat/Makefile6
-rw-r--r--fs/fat/cache.c25
-rw-r--r--fs/fat/dir.c20
-rw-r--r--fs/fat/fat.h329
-rw-r--r--fs/fat/fatent.c24
-rw-r--r--fs/fat/file.c49
-rw-r--r--fs/fat/inode.c133
-rw-r--r--fs/fat/misc.c155
-rw-r--r--fs/fat/namei_msdos.c (renamed from fs/msdos/namei.c)42
-rw-r--r--fs/fat/namei_vfat.c (renamed from fs/vfat/namei.c)161
-rw-r--r--fs/file_table.c4
-rw-r--r--fs/fuse/dev.c1
-rw-r--r--fs/hostfs/hostfs.h2
-rw-r--r--fs/hostfs/hostfs_kern.c4
-rw-r--r--fs/hostfs/hostfs_user.c2
-rw-r--r--fs/inotify.c150
-rw-r--r--fs/inotify_user.c3
-rw-r--r--fs/jbd/checkpoint.c31
-rw-r--r--fs/jbd/transaction.c1
-rw-r--r--fs/jbd2/checkpoint.c32
-rw-r--r--fs/jbd2/commit.c8
-rw-r--r--fs/jbd2/journal.c2
-rw-r--r--fs/jffs2/background.c10
-rw-r--r--fs/jffs2/compr_lzo.c15
-rw-r--r--fs/jffs2/nodemgmt.c2
-rw-r--r--fs/libfs.c2
-rw-r--r--fs/lockd/svc4proc.c1
-rw-r--r--fs/lockd/svcproc.c1
-rw-r--r--fs/msdos/Makefile7
-rw-r--r--fs/namei.c2
-rw-r--r--fs/namespace.c4
-rw-r--r--fs/nfs/inode.c13
-rw-r--r--fs/nfs/super.c2
-rw-r--r--fs/nfsd/vfs.c4
-rw-r--r--fs/ocfs2/file.c30
-rw-r--r--fs/ocfs2/inode.c6
-rw-r--r--fs/ocfs2/journal.c1
-rw-r--r--fs/ocfs2/mmap.c6
-rw-r--r--fs/ocfs2/namei.c8
-rw-r--r--fs/ocfs2/ocfs2.h3
-rw-r--r--fs/ocfs2/ocfs2_fs.h17
-rw-r--r--fs/ocfs2/xattr.c372
-rw-r--r--fs/ocfs2/xattr.h38
-rw-r--r--fs/partitions/check.c31
-rw-r--r--fs/pipe.c3
-rw-r--r--fs/proc/array.c2
-rw-r--r--fs/proc/proc_sysctl.c1
-rw-r--r--fs/proc/uptime.c38
-rw-r--r--fs/splice.c4
-rw-r--r--fs/udf/inode.c1
-rw-r--r--fs/vfat/Makefile7
-rw-r--r--fs/xfs/xfs_da_btree.c5
-rw-r--r--fs/xfs/xfs_dir2.c6
-rw-r--r--fs/xfs/xfs_inode.c2
-rw-r--r--fs/xfs/xfs_log.c39
-rw-r--r--fs/xfs/xfs_log_recover.c8
-rw-r--r--fs/xfs/xfs_mount.c5
87 files changed, 2368 insertions, 1476 deletions
diff --git a/fs/Makefile b/fs/Makefile
index 2168c902d5c..d9f8afe6f0c 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -81,8 +81,6 @@ obj-$(CONFIG_HUGETLBFS) += hugetlbfs/
obj-$(CONFIG_CODA_FS) += coda/
obj-$(CONFIG_MINIX_FS) += minix/
obj-$(CONFIG_FAT_FS) += fat/
-obj-$(CONFIG_MSDOS_FS) += msdos/
-obj-$(CONFIG_VFAT_FS) += vfat/
obj-$(CONFIG_BFS_FS) += bfs/
obj-$(CONFIG_ISO9660_FS) += isofs/
obj-$(CONFIG_HFSPLUS_FS) += hfsplus/ # Before hfs to find wrapped HFS+
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 625abf5422e..33bf8cbfd05 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -128,9 +128,10 @@ static inline void free_dev_ioctl(struct autofs_dev_ioctl *param)
*/
static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
{
- int err = -EINVAL;
+ int err;
- if (check_dev_ioctl_version(cmd, param)) {
+ err = check_dev_ioctl_version(cmd, param);
+ if (err) {
AUTOFS_WARN("invalid device control module version "
"supplied for cmd(0x%08x)", cmd);
goto out;
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index cde2f8e8935..4b6fb3f628c 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -56,12 +56,23 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
mntget(mnt);
dget(dentry);
- if (!autofs4_follow_mount(&mnt, &dentry))
+ if (!follow_down(&mnt, &dentry))
goto done;
- /* This is an autofs submount, we can't expire it */
- if (is_autofs4_dentry(dentry))
- goto done;
+ if (is_autofs4_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)
+ goto done;
+
+ /*
+ * Otherwise it's an offset mount and we need to check
+ * if we can umount its mount, if there is one.
+ */
+ if (!d_mountpoint(dentry))
+ goto done;
+ }
/* Update the expiry counter if fs is busy */
if (!may_umount_tree(mnt)) {
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 88a776fa0ef..db831efbdbb 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -986,7 +986,6 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part);
static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
{
struct gendisk *disk;
- struct hd_struct *part = NULL;
int ret;
int partno;
int perm = 0;
@@ -1004,24 +1003,25 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
return ret;
}
- ret = -ENXIO;
-
lock_kernel();
+ ret = -ENXIO;
disk = get_gendisk(bdev->bd_dev, &partno);
if (!disk)
goto out_unlock_kernel;
- part = disk_get_part(disk, partno);
- if (!part)
- goto out_unlock_kernel;
mutex_lock_nested(&bdev->bd_mutex, for_part);
if (!bdev->bd_openers) {
bdev->bd_disk = disk;
- bdev->bd_part = part;
bdev->bd_contains = bdev;
if (!partno) {
struct backing_dev_info *bdi;
+
+ ret = -ENXIO;
+ bdev->bd_part = disk_get_part(disk, partno);
+ if (!bdev->bd_part)
+ goto out_clear;
+
if (disk->fops->open) {
ret = disk->fops->open(bdev, mode);
if (ret)
@@ -1049,18 +1049,17 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
bdev->bd_contains = whole;
bdev->bd_inode->i_data.backing_dev_info =
whole->bd_inode->i_data.backing_dev_info;
+ bdev->bd_part = disk_get_part(disk, partno);
if (!(disk->flags & GENHD_FL_UP) ||
- !part || !part->nr_sects) {
+ !bdev->bd_part || !bdev->bd_part->nr_sects) {
ret = -ENXIO;
goto out_clear;
}
- bd_set_size(bdev, (loff_t)part->nr_sects << 9);
+ bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9);
}
} else {
- disk_put_part(part);
put_disk(disk);
module_put(disk->fops->owner);
- part = NULL;
disk = NULL;
if (bdev->bd_contains == bdev) {
if (bdev->bd_disk->fops->open) {
@@ -1080,6 +1079,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
return 0;
out_clear:
+ disk_put_part(bdev->bd_part);
bdev->bd_disk = NULL;
bdev->bd_part = NULL;
bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
@@ -1091,7 +1091,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
out_unlock_kernel:
unlock_kernel();
- disk_put_part(part);
if (disk)
module_put(disk->fops->owner);
put_disk(disk);
diff --git a/fs/buffer.c b/fs/buffer.c
index 6569fda5cfe..10179cfa115 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -878,6 +878,7 @@ void invalidate_inode_buffers(struct inode *inode)
spin_unlock(&buffer_mapping->private_lock);
}
}
+EXPORT_SYMBOL(invalidate_inode_buffers);
/*
* Remove any clean buffers from the inode's buffer list. This is called
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 8f528ea24c4..e078b7aea14 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -4,7 +4,15 @@ Various fixes to make delete of open files behavior more predictable
(when delete of an open file fails we mark the file as "delete-on-close"
in a way that more servers accept, but only if we can first rename the
file to a temporary name). Add experimental support for more safely
-handling fcntl(F_SETLEASE).
+handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
+sends, and also let tcp autotune the socket send and receive buffers.
+This reduces the number of EAGAIN errors returned by TCP/IP in
+high stress workloads (and the number of retries on socket writes
+when sending large SMBWriteX requests). Fix case in which a portion of
+data can in some cases not get written to the file on the server before the
+file is closed. Fix DFS parsing to properly handle path consumed field,
+and to handle certain codepage conversions better. Fix mount and
+umount race that can cause oops in mount or umount or reconnect.
Version 1.54
------------
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 69a12aae91d..490e34bbf27 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -107,12 +107,13 @@ void cifs_dump_mids(struct TCP_Server_Info *server)
#ifdef CONFIG_PROC_FS
static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
{
- struct list_head *tmp;
- struct list_head *tmp1;
+ struct list_head *tmp1, *tmp2, *tmp3;
struct mid_q_entry *mid_entry;
+ struct TCP_Server_Info *server;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
- int i;
+ int i, j;
+ __u32 dev_type;
seq_puts(m,
"Display Internal CIFS Data Structures for Debugging\n"
@@ -122,46 +123,78 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
seq_printf(m, "Servers:");
i = 0;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp1, &cifs_tcp_ses_list) {
+ server = list_entry(tmp1, struct TCP_Server_Info,
+ tcp_ses_list);
i++;
- ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
- if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
- (ses->serverNOS == NULL)) {
- seq_printf(m, "\nentry for %s not fully "
- "displayed\n\t", ses->serverName);
- } else {
- seq_printf(m,
- "\n%d) Name: %s Domain: %s Mounts: %d OS:"
- " %s \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
+ list_for_each(tmp2, &server->smb_ses_list) {
+ ses = list_entry(tmp2, struct cifsSesInfo,
+ smb_ses_list);
+ if ((ses->serverDomain == NULL) ||
+ (ses->serverOS == NULL) ||
+ (ses->serverNOS == NULL)) {
+ seq_printf(m, "\n%d) entry for %s not fully "
+ "displayed\n\t", i, ses->serverName);
+ } else {
+ seq_printf(m,
+ "\n%d) Name: %s Domain: %s Uses: %d OS:"
+ " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
" session status: %d\t",
i, ses->serverName, ses->serverDomain,
- atomic_read(&ses->inUse),
- ses->serverOS, ses->serverNOS,
+ ses->ses_count, ses->serverOS, ses->serverNOS,
ses->capabilities, ses->status);
- }
- if (ses->server) {
+ }
seq_printf(m, "TCP status: %d\n\tLocal Users To "
- "Server: %d SecMode: 0x%x Req On Wire: %d",
- ses->server->tcpStatus,
- atomic_read(&ses->server->socketUseCount),
- ses->server->secMode,
- atomic_read(&ses->server->inFlight));
+ "Server: %d SecMode: 0x%x Req On Wire: %d",
+ server->tcpStatus, server->srv_count,
+ server->secMode,
+ atomic_read(&server->inFlight));
#ifdef CONFIG_CIFS_STATS2
seq_printf(m, " In Send: %d In MaxReq Wait: %d",
- atomic_read(&ses->server->inSend),
- atomic_read(&ses->server->num_waiters));
+ atomic_read(&server->inSend),
+ atomic_read(&server->num_waiters));
#endif
- seq_puts(m, "\nMIDs:\n");
+ seq_puts(m, "\n\tShares:");
+ j = 0;
+ list_for_each(tmp3, &ses->tcon_list) {
+ tcon = list_entry(tmp3, struct cifsTconInfo,
+ tcon_list);
+ ++j;
+ dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
+ seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
+ tcon->treeName, tcon->tc_count);
+ if (tcon->nativeFileSystem) {
+ seq_printf(m, "Type: %s ",
+ tcon->nativeFileSystem);
+ }
+ seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
+ "\nPathComponentMax: %d Status: 0x%d",
+ le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
+ le32_to_cpu(tcon->fsAttrInfo.Attributes),
+ le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
+ tcon->tidStatus);
+ if (dev_type == FILE_DEVICE_DISK)
+ seq_puts(m, " type: DISK ");
+ else if (dev_type == FILE_DEVICE_CD_ROM)
+ seq_puts(m, " type: CDROM ");
+ else
+ seq_printf(m, " type: %d ", dev_type);
+
+ if (tcon->need_reconnect)
+ seq_puts(m, "\tDISCONNECTED ");
+ seq_putc(m, '\n');
+ }
+
+ seq_puts(m, "\n\tMIDs:\n");
spin_lock(&GlobalMid_Lock);
- list_for_each(tmp1, &ses->server->pending_mid_q) {
- mid_entry = list_entry(tmp1, struct
- mid_q_entry,
+ list_for_each(tmp3, &server->pending_mid_q) {
+ mid_entry = list_entry(tmp3, struct mid_q_entry,
qhead);
- seq_printf(m, "State: %d com: %d pid:"
+ seq_printf(m, "\tState: %d com: %d pid:"
" %d tsk: %p mid %d\n",
mid_entry->midState,
(int)mid_entry->command,
@@ -171,44 +204,8 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
}
spin_unlock(&GlobalMid_Lock);
}
-
- }
- read_unlock(&GlobalSMBSeslock);
- seq_putc(m, '\n');
-
- seq_puts(m, "Shares:");
-
- i = 0;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalTreeConnectionList) {
- __u32 dev_type;
- i++;
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
- seq_printf(m, "\n%d) %s Uses: %d ", i,
- tcon->treeName, atomic_read(&tcon->useCount));
- if (tcon->nativeFileSystem) {
- seq_printf(m, "Type: %s ",
- tcon->nativeFileSystem);
- }
- seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
- "\nPathComponentMax: %d Status: %d",
- le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
- le32_to_cpu(tcon->fsAttrInfo.Attributes),
- le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
- tcon->tidStatus);
- if (dev_type == FILE_DEVICE_DISK)
- seq_puts(m, " type: DISK ");
- else if (dev_type == FILE_DEVICE_CD_ROM)
- seq_puts(m, " type: CDROM ");
- else
- seq_printf(m, " type: %d ", dev_type);
-
- if (tcon->tidStatus == CifsNeedReconnect)
- seq_puts(m, "\tDISCONNECTED ");
}
- read_unlock(&GlobalSMBSeslock);
-
+ read_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
/* BB add code to dump additional info such as TCP session info now */
@@ -234,7 +231,9 @@ static ssize_t cifs_stats_proc_write(struct file *file,
{
char c;
int rc;
- struct list_head *tmp;
+ struct list_head *tmp1, *tmp2, *tmp3;
+ struct TCP_Server_Info *server;
+ struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
rc = get_user(c, buffer);
@@ -242,33 +241,42 @@ static ssize_t cifs_stats_proc_write(struct file *file,
return rc;
if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
- read_lock(&GlobalSMBSeslock);
#ifdef CONFIG_CIFS_STATS2
atomic_set(&totBufAllocCount, 0);
atomic_set(&totSmBufAllocCount, 0);
#endif /* CONFIG_CIFS_STATS2 */
- list_for_each(tmp, &GlobalTreeConnectionList) {
- tcon = list_entry(tmp, struct cifsTconInfo,
- cifsConnectionList);
- atomic_set(&tcon->num_smbs_sent, 0);
- atomic_set(&tcon->num_writes, 0);
- atomic_set(&tcon->num_reads, 0);
- atomic_set(&tcon->num_oplock_brks, 0);
- atomic_set(&tcon->num_opens, 0);
- atomic_set(&tcon->num_closes, 0);
- atomic_set(&tcon->num_deletes, 0);
- atomic_set(&tcon->num_mkdirs, 0);
- atomic_set(&tcon->num_rmdirs, 0);
- atomic_set(&tcon->num_renames, 0);
- atomic_set(&tcon->num_t2renames, 0);
- atomic_set(&tcon->num_ffirst, 0);
- atomic_set(&tcon->num_fnext, 0);
- atomic_set(&tcon->num_fclose, 0);
- atomic_set(&tcon->num_hardlinks, 0);
- atomic_set(&tcon->num_symlinks, 0);
- atomic_set(&tcon->num_locks, 0);
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp1, &cifs_tcp_ses_list) {
+ server = list_entry(tmp1, struct TCP_Server_Info,
+ tcp_ses_list);
+ list_for_each(tmp2, &server->smb_ses_list) {
+ ses = list_entry(tmp2, struct cifsSesInfo,
+ smb_ses_list);
+ list_for_each(tmp3, &ses->tcon_list) {
+ tcon = list_entry(tmp3,
+ struct cifsTconInfo,
+ tcon_list);
+ atomic_set(&tcon->num_smbs_sent, 0);
+ atomic_set(&tcon->num_writes, 0);
+ atomic_set(&tcon->num_reads, 0);
+ atomic_set(&tcon->num_oplock_brks, 0);
+ atomic_set(&tcon->num_opens, 0);
+ atomic_set(&tcon->num_closes, 0);
+ atomic_set(&tcon->num_deletes, 0);
+ atomic_set(&tcon->num_mkdirs, 0);
+ atomic_set(&tcon->num_rmdirs, 0);
+ atomic_set(&tcon->num_renames, 0);
+ atomic_set(&tcon->num_t2renames, 0);
+ atomic_set(&tcon->num_ffirst, 0);
+ atomic_set(&tcon->num_fnext, 0);
+ atomic_set(&tcon->num_fclose, 0);
+ atomic_set(&tcon->num_hardlinks, 0);
+ atomic_set(&tcon->num_symlinks, 0);
+ atomic_set(&tcon->num_locks, 0);
+ }
+ }
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
}
return count;
@@ -277,7 +285,9 @@ static ssize_t cifs_stats_proc_write(struct file *file,
static int cifs_stats_proc_show(struct seq_file *m, void *v)
{
int i;
- struct list_head *tmp;
+ struct list_head *tmp1, *tmp2, *tmp3;
+ struct TCP_Server_Info *server;
+ struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
seq_printf(m,
@@ -306,44 +316,55 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
GlobalCurrentXid, GlobalMaxActiveXid);
i = 0;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalTreeConnectionList) {
- i++;
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- seq_printf(m, "\n%d) %s", i, tcon->treeName);
- if (tcon->tidStatus == CifsNeedReconnect)
- seq_puts(m, "\tDISCONNECTED ");
- seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
- atomic_read(&tcon->num_smbs_sent),
- atomic_read(&tcon->num_oplock_brks));
- seq_printf(m, "\nReads: %d Bytes: %lld",
- atomic_read(&tcon->num_reads),
- (long long)(tcon->bytes_read));
- seq_printf(m, "\nWrites: %d Bytes: %lld",
- atomic_read(&tcon->num_writes),
- (long long)(tcon->bytes_written));
- seq_printf(m,
- "\nLocks: %d HardLinks: %d Symlinks: %d",
- atomic_read(&tcon->num_locks),
- atomic_read(&tcon->num_hardlinks),
- atomic_read(&tcon->num_symlinks));
-
- seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
- atomic_read(&tcon->num_opens),
- atomic_read(&tcon->num_closes),
- atomic_read(&tcon->num_deletes));
- seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
- atomic_read(&tcon->num_mkdirs),
- atomic_read(&tcon->num_rmdirs));
- seq_printf(m, "\nRenames: %d T2 Renames %d",
- atomic_read(&tcon->num_renames),
- atomic_read(&tcon->num_t2renames));
- seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
- atomic_read(&tcon->num_ffirst),
- atomic_read(&tcon->num_fnext),
- atomic_read(&tcon->num_fclose));
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp1, &cifs_tcp_ses_list) {
+ server = list_entry(tmp1, struct TCP_Server_Info,
+ tcp_ses_list);
+ list_for_each(tmp2, &server->smb_ses_list) {
+ ses = list_entry(tmp2, struct cifsSesInfo,
+ smb_ses_list);
+ list_for_each(tmp3, &ses->tcon_list) {
+ tcon = list_entry(tmp3,
+ struct cifsTconInfo,
+ tcon_list);
+ i++;
+ seq_printf(m, "\n%d) %s", i, tcon->treeName);
+ if (tcon->need_reconnect)
+ seq_puts(m, "\tDISCONNECTED ");
+ seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
+ atomic_read(&tcon->num_smbs_sent),
+ atomic_read(&tcon->num_oplock_brks));
+ seq_printf(m, "\nReads: %d Bytes: %lld",
+ atomic_read(&tcon->num_reads),
+ (long long)(tcon->bytes_read));
+ seq_printf(m, "\nWrites: %d Bytes: %lld",
+ atomic_read(&tcon->num_writes),
+ (long long)(tcon->bytes_written));
+ seq_printf(m, "\nLocks: %d HardLinks: %d "
+ "Symlinks: %d",
+ atomic_read(&tcon->num_locks),
+ atomic_read(&tcon->num_hardlinks),
+ atomic_read(&tcon->num_symlinks));
+ seq_printf(m, "\nOpens: %d Closes: %d"
+ "Deletes: %d",
+ atomic_read(&tcon->num_opens),
+ atomic_read(&tcon->num_closes),
+ atomic_read(&tcon->num_deletes));
+ seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
+ atomic_read(&tcon->num_mkdirs),
+ atomic_read(&tcon->num_rmdirs));
+ seq_printf(m, "\nRenames: %d T2 Renames %d",
+ atomic_read(&tcon->num_renames),
+ atomic_read(&tcon->num_t2renames));
+ seq_printf(m, "\nFindFirst: %d FNext %d "
+ "FClose %d",
+ atomic_read(&tcon->num_ffirst),
+ atomic_read(&tcon->num_fnext),
+ atomic_read(&tcon->num_fclose));
+ }
+ }
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
return 0;
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index d2c8eef84f3..e1c18362ba4 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -106,7 +106,8 @@ static char *cifs_get_share_name(const char *node_name)
/**
* compose_mount_options - creates mount options for refferral
* @sb_mountdata: parent/root DFS mount options (template)
- * @ref_unc: refferral server UNC
+ * @dentry: point where we are going to mount
+ * @ref: server's referral
* @devname: pointer for saving device name
*
* creates mount options for submount based on template options sb_mountdata
@@ -116,7 +117,8 @@ static char *cifs_get_share_name(const char *node_name)
* Caller is responcible for freeing retunrned value if it is not error.
*/
static char *compose_mount_options(const char *sb_mountdata,
- const char *ref_unc,
+ struct dentry *dentry,
+ const struct dfs_info3_param *ref,
char **devname)
{
int rc;
@@ -126,11 +128,12 @@ static char *compose_mount_options(const char *sb_mountdata,
char *srvIP = NULL;
char sep = ',';
int off, noff;
+ char *fullpath;
if (sb_mountdata == NULL)
return ERR_PTR(-EINVAL);
- *devname = cifs_get_share_name(ref_unc);
+ *devname = cifs_get_share_name(ref->node_name);
rc = dns_resolve_server_name_to_ip(*devname, &srvIP);
if (rc != 0) {
cERROR(1, ("%s: Failed to resolve server part of %s to IP",
@@ -138,7 +141,12 @@ static char *compose_mount_options(const char *sb_mountdata,
mountdata = ERR_PTR(rc);
goto compose_mount_options_out;
}
- md_len = strlen(sb_mountdata) + strlen(srvIP) + strlen(ref_unc) + 3;
+ /* md_len = strlen(...) + 12 for 'sep+prefixpath='
+ * assuming that we have 'unc=' and 'ip=' in
+ * the original sb_mountdata
+ */
+ md_len = strlen(sb_mountdata) + strlen(srvIP) +
+ strlen(ref->node_name) + 12;
mountdata = kzalloc(md_len+1, GFP_KERNEL);
if (mountdata == NULL) {
mountdata = ERR_PTR(-ENOMEM);
@@ -152,41 +160,56 @@ static char *compose_mount_options(const char *sb_mountdata,
strncpy(mountdata, sb_mountdata, 5);
off += 5;
}
- while ((tkn_e = strchr(sb_mountdata+off, sep))) {
- noff = (tkn_e - (sb_mountdata+off)) + 1;
- if (strnicmp(sb_mountdata+off, "unc=", 4) == 0) {
+
+ do {
+ tkn_e = strchr(sb_mountdata + off, sep);
+ if (tkn_e == NULL)
+ noff = strlen(sb_mountdata + off);
+ else
+ noff = tkn_e - (sb_mountdata + off) + 1;
+
+ if (strnicmp(sb_mountdata + off, "unc=", 4) == 0) {
off += noff;
continue;
}
- if (strnicmp(sb_mountdata+off, "ip=", 3) == 0) {
+ if (strnicmp(sb_mountdata + off, "ip=", 3) == 0) {
off += noff;
continue;
}
- if (strnicmp(sb_mountdata+off, "prefixpath=", 3) == 0) {
+ if (strnicmp(sb_mountdata + off, "prefixpath=", 11) == 0) {
off += noff;
continue;
}
- strncat(mountdata, sb_mountdata+off, noff);
+ strncat(mountdata, sb_mountdata + off, noff);
off += noff;
- }
- strcat(mountdata, sb_mountdata+off);
+ } while (tkn_e);
+ strcat(mountdata, sb_mountdata + off);
mountdata[md_len] = '\0';
/* copy new IP and ref share name */
- strcat(mountdata, ",ip=");
+ if (mountdata[strlen(mountdata) - 1] != sep)
+ strncat(mountdata, &sep, 1);
+ strcat(mountdata, "ip=");
strcat(mountdata, srvIP);
- strcat(mountdata, ",unc=");
+ strncat(mountdata, &sep, 1);
+ strcat(mountdata, "unc=");
strcat(mountdata, *devname);
/* find & copy prefixpath */
- tkn_e = strchr(ref_unc+2, '\\');
- if (tkn_e) {
- tkn_e = strchr(tkn_e+1, '\\');
- if (tkn_e) {
- strcat(mountdata, ",prefixpath=");
- strcat(mountdata, tkn_e+1);
- }
+ tkn_e = strchr(ref->node_name + 2, '\\');
+ if (tkn_e == NULL) /* invalid unc, missing share name*/
+ goto compose_mount_options_out;
+
+ fullpath = build_path_from_dentry(dentry);
+ tkn_e = strchr(tkn_e + 1, '\\');
+ if (tkn_e || strlen(fullpath) - (ref->path_consumed)) {
+ strncat(mountdata, &sep, 1);
+ strcat(mountdata, "prefixpath=");
+ if (tkn_e)
+ strcat(mountdata, tkn_e + 1);
+ strcat(mountdata, fullpath + (ref->path_consumed));
}
+ kfree(fullpath);
/*cFYI(1,("%s: parent mountdata: %s", __func__,sb_mountdata));*/
/*cFYI(1, ("%s: submount mountdata: %s", __func__, mountdata ));*/
@@ -198,7 +221,7 @@ compose_mount_options_out:
static struct vfsmount *cifs_dfs_do_refmount(const struct vfsmount *mnt_parent,
- struct dentry *dentry, char *ref_unc)
+ struct dentry *dentry, const struct dfs_info3_param *ref)
{
struct cifs_sb_info *cifs_sb;
struct vfsmount *mnt;
@@ -207,7 +230,7 @@ static struct vfsmount *cifs_dfs_do_refmount(const struct vfsmount *mnt_parent,
cifs_sb = CIFS_SB(dentry->d_inode->i_sb);
mountdata = compose_mount_options(cifs_sb->mountdata,
- ref_unc, &devname);
+ dentry, ref, &devname);
if (IS_ERR(mountdata))
return (struct vfsmount *)mountdata;
@@ -310,7 +333,7 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
}
mnt = cifs_dfs_do_refmount(nd->path.mnt,
nd->path.dentry,
- referrals[i].node_name);
+ referrals + i);
cFYI(1, ("%s: cifs_dfs_do_refmount:%s , mnt:%p",
__func__,
referrals[i].node_name, mnt));
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index fcee9298b62..0ab2fb5afef 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -73,8 +73,8 @@ struct key_type cifs_spnego_key_type = {
* strlen(";sec=ntlmsspi") */
#define MAX_MECH_STR_LEN 13
-/* max possible addr len eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/60 */
-#define MAX_IPV6_ADDR_LEN 42
+/* max possible addr len eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/128 */
+#define MAX_IPV6_ADDR_LEN 43
/* strlen of "host=" */
#define HOST_KEY_LEN 5
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index ac5915d61dc..d9cf467309e 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -514,10 +514,11 @@ static void cifs_umount_begin(struct super_block *sb)
tcon = cifs_sb->tcon;
if (tcon == NULL)
return;
- down(&tcon->tconSem);
- if (atomic_read(&tcon->useCount) == 1)
+
+ read_lock(&cifs_tcp_ses_lock);
+ if (tcon->tc_count == 1)
tcon->tidStatus = CifsExiting;
- up(&tcon->tconSem);
+ read_unlock(&cifs_tcp_ses_lock);
/* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
/* cancel_notify_requests(tcon); */
@@ -1013,7 +1014,7 @@ static int cifs_oplock_thread(void *dummyarg)
not bother sending an oplock release if session
to server still is disconnected since oplock
already released by the server in that case */
- if (pTcon->tidStatus != CifsNeedReconnect) {
+ if (!pTcon->need_reconnect) {
rc = CIFSSMBLock(0, pTcon, netfid,
0 /* len */ , 0 /* offset */, 0,
0, LOCKING_ANDX_OPLOCK_RELEASE,
@@ -1031,24 +1032,24 @@ static int cifs_oplock_thread(void *dummyarg)
static int cifs_dnotify_thread(void *dummyarg)
{
struct list_head *tmp;
- struct cifsSesInfo *ses;
+ struct TCP_Server_Info *server;
do {
if (try_to_freeze())
continue;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(15*HZ);
- read_lock(&GlobalSMBSeslock);
/* check if any stuck requests that need
to be woken up and wakeq so the
thread can wake up and error out */
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server && atomic_read(&ses->server->inFlight))
- wake_up_all(&ses->server->response_q);
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &cifs_tcp_ses_list) {
+ server = list_entry(tmp, struct TCP_Server_Info,
+ tcp_ses_list);
+ if (atomic_read(&server->inFlight))
+ wake_up_all(&server->response_q);
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
} while (!kthread_should_stop());
return 0;
@@ -1059,9 +1060,7 @@ init_cifs(void)
{
int rc = 0;
cifs_proc_init();
-/* INIT_LIST_HEAD(&GlobalServerList);*/ /* BB not implemented yet */
- INIT_LIST_HEAD(&GlobalSMBSessionList);
- INIT_LIST_HEAD(&GlobalTreeConnectionList);
+ INIT_LIST_HEAD(&cifs_tcp_ses_list);
INIT_LIST_HEAD(&GlobalOplock_Q);
#ifdef CONFIG_CIFS_EXPERIMENTAL
INIT_LIST_HEAD(&GlobalDnotifyReqList);
@@ -1089,6 +1088,7 @@ init_cifs(void)
GlobalMaxActiveXid = 0;
memset(Local_System_Name, 0, 15);
rwlock_init(&GlobalSMBSeslock);
+ rwlock_init(&cifs_tcp_ses_lock);
spin_lock_init(&GlobalMid_Lock);
if (cifs_max_pending < 2) {
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c791e5b5a91..c57c0565547 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -85,8 +85,7 @@ enum securityEnum {
};
enum protocolEnum {
- IPV4 = 0,
- IPV6,
+ TCP = 0,
SCTP
/* Netbios frames protocol not supported at this time */
};
@@ -122,6 +121,9 @@ struct cifs_cred {
*/
struct TCP_Server_Info {
+ struct list_head tcp_ses_list;
+ struct list_head smb_ses_list;
+ int srv_count; /* reference counter */
/* 15 character server name + 0x20 16th byte indicating type = srv */
char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2];
@@ -141,7 +143,8 @@ struct TCP_Server_Info {
char versionMajor;
char versionMinor;
bool svlocal:1; /* local server or remote */
- atomic_t socketUseCount; /* number of open cifs sessions on socket */
+ bool noblocksnd; /* use blocking sendmsg */
+ bool noautotune; /* do not autotune send buf sizes */
atomic_t inFlight; /* number of requests on the wire to server */
#ifdef CONFIG_CIFS_STATS2
atomic_t inSend; /* requests trying to send */
@@ -192,13 +195,14 @@ struct cifsUidInfo {
* Session structure. One of these for each uid session with a particular host
*/
struct cifsSesInfo {
- struct list_head cifsSessionList;
+ struct list_head smb_ses_list;
+ struct list_head tcon_list;
struct semaphore sesSem;
#if 0
struct cifsUidInfo *uidInfo; /* pointer to user info */
#endif
struct TCP_Server_Info *server; /* pointer to server info */
- atomic_t inUse; /* # of mounts (tree connections) on this ses */
+ int ses_count; /* reference counter */
enum statusEnum status;
unsigned overrideSecFlg; /* if non-zero override global sec flags */
__u16 ipc_tid; /* special tid for connection to IPC share */
@@ -214,6 +218,7 @@ struct cifsSesInfo {
char userName[MAX_USERNAME_SIZE + 1];
char *domainName;
char *password;
+ bool need_reconnect:1; /* connection reset, uid now invalid */
};
/* no more than one of the following three session flags may be set */
#define CIFS_SES_NT4 1
@@ -228,16 +233,15 @@ struct cifsSesInfo {
* session
*/
struct cifsTconInfo {
- struct list_head cifsConnectionList;
+ struct list_head tcon_list;
+ int tc_count;
struct list_head openFileList;
- struct semaphore tconSem;
struct cifsSesInfo *ses; /* pointer to session associated with */
char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
char *nativeFileSystem;
__u16 tid; /* The 2 byte tree id */
__u16 Flags; /* optional support bits */
enum statusEnum tidStatus;
- atomic_t useCount; /* how many explicit/implicit mounts to share */
#ifdef CONFIG_CIFS_STATS
atomic_t num_smbs_sent;
atomic_t num_writes;
@@ -286,6 +290,7 @@ struct cifsTconInfo {
bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
for this mount even if server would support */
bool local_lease:1; /* check leases (only) on local system not remote */
+ bool need_reconnect:1; /* connection reset, tid now invalid */
/* BB add field for back pointer to sb struct(s)? */
};
@@ -586,22 +591,30 @@ require use of the stronger protocol */
#endif
/*
- * The list of servers that did not respond with NT LM 0.12.
- * This list helps improve performance and eliminate the messages indicating
- * that we had a communications error talking to the server in this list.
+ * the list of TCP_Server_Info structures, ie each of the sockets
+ * connecting our client to a distinct server (ip address), is
+ * chained together by cifs_tcp_ses_list. The list of all our SMB
+ * sessions (and from that the tree connections) can be found
+ * by iterating over cifs_tcp_ses_list
*/
-/* Feature not supported */
-/* GLOBAL_EXTERN struct servers_not_supported *NotSuppList; */
+GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
/*
- * The following is a hash table of all the users we know about.
+ * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
+ * tcp session, and the list of tcon's per smb session. It also protects
+ * the reference counters for the server, smb session, and tcon. Finally,
+ * changes to the tcon->tidStatus should be done while holding this lock.
*/
-GLOBAL_EXTERN struct smbUidInfo *GlobalUidList[UID_HASH];
+GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock;
-/* GLOBAL_EXTERN struct list_head GlobalServerList; BB not implemented yet */
-GLOBAL_EXTERN struct list_head GlobalSMBSessionList;
-GLOBAL_EXTERN struct list_head GlobalTreeConnectionList;
-GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */
+/*
+ * This lock protects the cifs_file->llist and cifs_file->flist
+ * list operations, and updates to some flags (cifs_file->invalidHandle)
+ * It will be moved to either use the tcon->stat_lock or equivalent later.
+ * If cifs_tcp_ses_lock and the lock below are both needed to be held, then
+ * the cifs_tcp_ses_lock must be grabbed first and released last.
+ */
+GLOBAL_EXTERN rwlock_t GlobalSMBSeslock;
GLOBAL_EXTERN struct list_head GlobalOplock_Q;
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 0cff7fe986e..6f21ecb85ce 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -36,7 +36,7 @@ extern void cifs_buf_release(void *);
extern struct smb_hdr *cifs_small_buf_get(void);
extern void cifs_small_buf_release(void *);
extern int smb_send(struct socket *, struct smb_hdr *,
- unsigned int /* length */ , struct sockaddr *);
+ unsigned int /* length */ , struct sockaddr *, bool);
extern unsigned int _GetXid(void);
extern void _FreeXid(unsigned int);
#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current->fsuid));
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 843a85fb8b9..2af8626ced4 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -190,10 +190,10 @@ small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
/* need to prevent multiple threads trying to
simultaneously reconnect the same SMB session */
down(&tcon->ses->sesSem);
- if (tcon->ses->status == CifsNeedReconnect)
+ if (tcon->ses->need_reconnect)
rc = cifs_setup_session(0, tcon->ses,
nls_codepage);
- if (!rc && (tcon->tidStatus == CifsNeedReconnect)) {
+ if (!rc && (tcon->need_reconnect)) {
mark_open_files_invalid(tcon);
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
@@ -337,10 +337,10 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
/* need to prevent multiple threads trying to
simultaneously reconnect the same SMB session */
down(&tcon->ses->sesSem);
- if (tcon->ses->status == CifsNeedReconnect)
+ if (tcon->ses->need_reconnect)
rc = cifs_setup_session(0, tcon->ses,
nls_codepage);
- if (!rc && (tcon->tidStatus == CifsNeedReconnect)) {
+ if (!rc && (tcon->need_reconnect)) {
mark_open_files_invalid(tcon);
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
@@ -664,8 +664,9 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
rc = -EIO;
goto neg_err_exit;
}
-
- if (server->socketUseCount.counter > 1) {
+ read_lock(&cifs_tcp_ses_lock);
+ if (server->srv_count > 1) {
+ read_unlock(&cifs_tcp_ses_lock);
if (memcmp(server->server_GUID,
pSMBr->u.extended_response.
GUID, 16) != 0) {
@@ -674,9 +675,11 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
pSMBr->u.extended_response.GUID,
16);
}
- } else
+ } else {
+ read_unlock(&cifs_tcp_ses_lock);
memcpy(server->server_GUID,
pSMBr->u.extended_response.GUID, 16);
+ }
if (count == 16) {
server->secType = RawNTLMSSP;
@@ -739,50 +742,31 @@ CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
int rc = 0;
cFYI(1, ("In tree disconnect"));
- /*
- * If last user of the connection and
- * connection alive - disconnect it
- * If this is the last connection on the server session disconnect it
- * (and inside session disconnect we should check if tcp socket needs
- * to be freed and kernel thread woken up).
- */
- if (tcon)
- down(&tcon->tconSem);
- else
- return -EIO;
- atomic_dec(&tcon->useCount);
- if (atomic_read(&tcon->useCount) > 0) {
- up(&tcon->tconSem);
- return -EBUSY;
- }
+ /* BB: do we need to check this? These should never be NULL. */
+ if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
+ return -EIO;
- /* No need to return error on this operation if tid invalidated and
- closed on server already e.g. due to tcp session crashing */
- if (tcon->tidStatus == CifsNeedReconnect) {
- up(&tcon->tconSem);
+ /*
+ * No need to return error on this operation if tid invalidated and
+ * closed on server already e.g. due to tcp session crashing. Also,
+ * the tcon is no longer on the list, so no need to take lock before
+ * checking this.
+ */
+ if (tcon->need_reconnect)
return 0;
- }
- if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) {
- up(&tcon->tconSem);
- return -EIO;
- }
rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
(void **)&smb_buffer);
- if (rc) {
- up(&tcon->tconSem);
+ if (rc)
return rc;
- }
rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0);
if (rc)
cFYI(1, ("Tree disconnect failed %d", rc));
- up(&tcon->tconSem);
-
/* No need to return error on this operation if tid invalidated and
- closed on server already e.g. due to tcp session crashing */
+ closed on server already e.g. due to tcp session crashing */
if (rc == -EAGAIN)
rc = 0;
@@ -796,43 +780,36 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
int rc = 0;
cFYI(1, ("In SMBLogoff for session disconnect"));
- if (ses)
- down(&ses->sesSem);
- else
+
+ /*
+ * BB: do we need to check validity of ses and server? They should
+ * always be valid since we have an active reference. If not, that
+ * should probably be a BUG()
+ */
+ if (!ses || !ses->server)
return -EIO;
- atomic_dec(&ses->inUse);
- if (atomic_read(&ses->inUse) > 0) {
- up(&ses->sesSem);
- return -EBUSY;
- }
+ down(&ses->sesSem);
+ if (ses->need_reconnect)
+ goto session_already_dead; /* no need to send SMBlogoff if uid
+ already closed due to reconnect */
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
if (rc) {
up(&ses->sesSem);
return rc;
}
- if (ses->server) {
- pSMB->hdr.Mid = GetNextMid(ses->server);
+ pSMB->hdr.Mid = GetNextMid(ses->server);
- if (ses->server->secMode &
+ if (ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
- }
pSMB->hdr.Uid = ses->Suid;
pSMB->AndXCommand = 0xFF;
rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0);
- if (ses->server) {
- atomic_dec(&ses->server->socketUseCount);
- if (atomic_read(&ses->server->socketUseCount) == 0) {
- spin_lock(&GlobalMid_Lock);
- ses->server->tcpStatus = CifsExiting;
- spin_unlock(&GlobalMid_Lock);
- rc = -ESHUTDOWN;
- }
- }
+session_already_dead:
up(&ses->sesSem);
/* if session dead then we do not need to do ulogoff,
@@ -1536,7 +1513,7 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
__u32 bytes_sent;
__u16 byte_count;
- /* cFYI(1,("write at %lld %d bytes",offset,count));*/
+ /* cFYI(1, ("write at %lld %d bytes", offset, count));*/
if (tcon->ses == NULL)
return -ECONNABORTED;
@@ -3922,6 +3899,27 @@ GetInodeNumOut:
return rc;
}
+/* computes length of UCS string converted to host codepage
+ * @src: UCS string
+ * @maxlen: length of the input string in UCS characters
+ * (not in bytes)
+ *
+ * return: size of input string in host codepage
+ */
+static int hostlen_fromUCS(const __le16 *src, const int maxlen,
+ const struct nls_table *nls_codepage) {
+ int i;
+ int hostlen = 0;
+ char to[4];
+ int charlen;
+ for (i = 0; (i < maxlen) && src[i]; ++i) {
+ charlen = nls_codepage->uni2char(le16_to_cpu(src[i]),
+ to, NLS_MAX_CHARSET_SIZE);
+ hostlen += charlen > 0 ? charlen : 1;
+ }
+ return hostlen;
+}
+
/* parses DFS refferal V3 structure
* caller is responsible for freeing target_nodes
* returns:
@@ -3932,7 +3930,8 @@ static int
parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
unsigned int *num_of_nodes,
struct dfs_info3_param **target_nodes,
- const struct nls_table *nls_codepage)
+ const struct nls_table *nls_codepage, int remap,
+ const char *searchName)
{
int i, rc = 0;
char *data_end;
@@ -3983,7 +3982,17 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
struct dfs_info3_param *node = (*target_nodes)+i;
node->flags = le16_to_cpu(pSMBr->DFSFlags);
- node->path_consumed = le16_to_cpu(pSMBr->PathConsumed);
+ if (is_unicode) {
+ __le16 *tmp = kmalloc(strlen(searchName)*2, GFP_KERNEL);
+ cifsConvertToUCS((__le16 *) tmp, searchName,
+ PATH_MAX, nls_codepage, remap);
+ node->path_consumed = hostlen_fromUCS(tmp,
+ le16_to_cpu(pSMBr->PathConsumed)/2,
+ nls_codepage);
+ kfree(tmp);
+ } else
+ node->path_consumed = le16_to_cpu(pSMBr->PathConsumed);
+
node->server_type = le16_to_cpu(ref->ServerType);
node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags);
@@ -4116,7 +4125,8 @@ getDFSRetry:
/* parse returned result into more usable form */
rc = parse_DFS_referrals(pSMBr, num_of_nodes,
- target_nodes, nls_codepage);
+ target_nodes, nls_codepage, remap,
+ searchName);
GetDFSRefExit:
cifs_buf_release(pSMB);
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 71b7661e226..c7d34171458 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -92,6 +92,8 @@ struct smb_vol {
bool seal:1; /* request transport encryption on share */
bool nodfs:1; /* Do not request DFS, even if available */
bool local_lease:1; /* check leases only on local system, not remote */
+ bool noblocksnd:1;
+ bool noautotune:1;
unsigned int rsize;
unsigned int wsize;
unsigned int sockopt;
@@ -102,9 +104,11 @@ struct smb_vol {
static int ipv4_connect(struct sockaddr_in *psin_server,
struct socket **csocket,
char *netb_name,
- char *server_netb_name);
+ char *server_netb_name,
+ bool noblocksnd,
+ bool nosndbuf); /* ipv6 never set sndbuf size */
static int ipv6_connect(struct sockaddr_in6 *psin_server,
- struct socket **csocket);
+ struct socket **csocket, bool noblocksnd);
/*
@@ -120,7 +124,7 @@ static int
cifs_reconnect(struct TCP_Server_Info *server)
{
int rc = 0;
- struct list_head *tmp;
+ struct list_head *tmp, *tmp2;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
struct mid_q_entry *mid_entry;
@@ -140,23 +144,17 @@ cifs_reconnect(struct TCP_Server_Info *server)
/* before reconnecting the tcp session, mark the smb session (uid)
and the tid bad so they are not used until reconnected */
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
- if (ses->server) {
- if (ses->server == server) {
- ses->status = CifsNeedReconnect;
- ses->ipc_tid = 0;
- }
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ ses->need_reconnect = true;
+ ses->ipc_tid = 0;
+ list_for_each(tmp2, &ses->tcon_list) {
+ tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list);
+ tcon->need_reconnect = true;
}
- /* else tcp and smb sessions need reconnection */
- }
- list_for_each(tmp, &GlobalTreeConnectionList) {
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- if ((tcon->ses) && (tcon->ses->server == server))
- tcon->tidStatus = CifsNeedReconnect;
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
/* do not want to be sending data on a socket we are freeing */
down(&server->tcpSem);
if (server->ssocket) {
@@ -189,14 +187,15 @@ cifs_reconnect(struct TCP_Server_Info *server)
while ((server->tcpStatus != CifsExiting) &&
(server->tcpStatus != CifsGood)) {
try_to_freeze();
- if (server->protocolType == IPV6) {
+ if (server->addr.sockAddr6.sin6_family == AF_INET6) {
rc = ipv6_connect(&server->addr.sockAddr6,
- &server->ssocket);
+ &server->ssocket, server->noautotune);
} else {
rc = ipv4_connect(&server->addr.sockAddr,
&server->ssocket,
server->workstation_RFC1001_name,
- server->server_RFC1001_name);
+ server->server_RFC1001_name,
+ server->noblocksnd, server->noautotune);
}
if (rc) {
cFYI(1, ("reconnect error %d", rc));
@@ -412,9 +411,14 @@ incomplete_rcv:
msleep(1); /* minimum sleep to prevent looping
allowing socket to clear and app threads to set
tcpStatus CifsNeedReconnect if server hung */
- if (pdu_length < 4)
+ if (pdu_length < 4) {
+ iov.iov_base = (4 - pdu_length) +
+ (char *)smb_buffer;
+ iov.iov_len = pdu_length;
+ smb_msg.msg_control = NULL;
+ smb_msg.msg_controllen = 0;
goto incomplete_rcv;
- else
+ } else
continue;
} else if (length <= 0) {
if (server->tcpStatus == CifsNew) {
@@ -649,6 +653,11 @@ multi_t2_fnd:
}
} /* end while !EXITING */
+ /* take it off the list, if it's not already */
+ write_lock(&cifs_tcp_ses_lock);
+ list_del_init(&server->tcp_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
spin_lock(&GlobalMid_Lock);
server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
@@ -681,29 +690,29 @@ multi_t2_fnd:
if (smallbuf) /* no sense logging a debug message if NULL */
cifs_small_buf_release(smallbuf);
- read_lock(&GlobalSMBSeslock);
+ /*
+ * BB: we shouldn't have to do any of this. It shouldn't be
+ * possible to exit from the thread with active SMB sessions
+ */
+ read_lock(&cifs_tcp_ses_lock);
if (list_empty(&server->pending_mid_q)) {
/* loop through server session structures attached to this and
mark them dead */
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses =
- list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server == server) {
- ses->status = CifsExiting;
- ses->server = NULL;
- }
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo,
+ smb_ses_list);
+ ses->status = CifsExiting;
+ ses->server = NULL;
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
} else {
/* although we can not zero the server struct pointer yet,
since there are active requests which may depnd on them,
mark the corresponding SMB sessions as exiting too */
- list_for_each(tmp, &GlobalSMBSessionList) {
+ list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server == server)
- ses->status = CifsExiting;
+ smb_ses_list);
+ ses->status = CifsExiting;
}
spin_lock(&GlobalMid_Lock);
@@ -718,7 +727,7 @@ multi_t2_fnd:
}
}
spin_unlock(&GlobalMid_Lock);
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
/* 1/8th of sec is more than enough time for them to exit */
msleep(125);
}
@@ -740,14 +749,13 @@ multi_t2_fnd:
if there are any pointing to this (e.g
if a crazy root user tried to kill cifsd
kernel thread explicitly this might happen) */
- write_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server == server)
- ses->server = NULL;
+ /* BB: This shouldn't be necessary, see above */
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ ses->server = NULL;
}
- write_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
kfree(server->hostname);
task_to_wake = xchg(&server->tsk, NULL);
@@ -1192,6 +1200,10 @@ cifs_parse_mount_options(char *options, const char *devname,
/* ignore */
} else if (strnicmp(data, "rw", 2) == 0) {
vol->rw = true;
+ } else if (strnicmp(data, "noblocksend", 11) == 0) {
+ vol->noblocksnd = 1;
+ } else if (strnicmp(data, "noautotune", 10) == 0) {
+ vol->noautotune = 1;
} else if ((strnicmp(data, "suid", 4) == 0) ||
(strnicmp(data, "nosuid", 6) == 0) ||
(strnicmp(data, "exec", 4) == 0) ||
@@ -1343,94 +1355,158 @@ cifs_parse_mount_options(char *options, const char *devname,
return 0;
}
-static struct cifsSesInfo *
-cifs_find_tcp_session(struct in_addr *target_ip_addr,
- struct in6_addr *target_ip6_addr,
- char *userName, struct TCP_Server_Info **psrvTcp)
+static struct TCP_Server_Info *
+cifs_find_tcp_session(struct sockaddr *addr)
{
struct list_head *tmp;
- struct cifsSesInfo *ses;
-
- *psrvTcp = NULL;
+ struct TCP_Server_Info *server;
+ struct sockaddr_in *addr4 = (struct sockaddr_in *) addr;
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr;
+
+ write_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &cifs_tcp_ses_list) {
+ server = list_entry(tmp, struct TCP_Server_Info,
+ tcp_ses_list);
+ /*
+ * the demux thread can exit on its own while still in CifsNew
+ * so don't accept any sockets in that state. Since the
+ * tcpStatus never changes back to CifsNew it's safe to check
+ * for this without a lock.
+ */
+ if (server->tcpStatus == CifsNew)
+ continue;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
- if (!ses->server)
+ if (addr->sa_family == AF_INET &&
+ (addr4->sin_addr.s_addr !=
+ server->addr.sockAddr.sin_addr.s_addr))
+ continue;
+ else if (addr->sa_family == AF_INET6 &&
+ memcmp(&server->addr.sockAddr6.sin6_addr,
+ &addr6->sin6_addr, sizeof(addr6->sin6_addr)))
continue;
- if (target_ip_addr &&
- ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr)
- continue;
- else if (target_ip6_addr &&
- memcmp(&ses->server->addr.sockAddr6.sin6_addr,
- target_ip6_addr, sizeof(*target_ip6_addr)))
- continue;
- /* BB lock server and tcp session; increment use count here?? */
+ ++server->srv_count;
+ write_unlock(&cifs_tcp_ses_lock);
+ cFYI(1, ("Existing tcp session with server found"));
+ return server;
+ }
+ write_unlock(&cifs_tcp_ses_lock);
+ return NULL;
+}
- /* found a match on the TCP session */
- *psrvTcp = ses->server;
+static void
+cifs_put_tcp_session(struct TCP_Server_Info *server)
+{
+ struct task_struct *task;
- /* BB check if reconnection needed */
- if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) {
- read_unlock(&GlobalSMBSeslock);
- /* Found exact match on both TCP and
- SMB sessions */
- return ses;
- }
- /* else tcp and smb sessions need reconnection */
+ write_lock(&cifs_tcp_ses_lock);
+ if (--server->srv_count > 0) {
+ write_unlock(&cifs_tcp_ses_lock);
+ return;
}
- read_unlock(&GlobalSMBSeslock);
- return NULL;
+ list_del_init(&server->tcp_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ spin_lock(&GlobalMid_Lock);
+ server->tcpStatus = CifsExiting;
+ spin_unlock(&GlobalMid_Lock);
+
+ task = xchg(&server->tsk, NULL);
+ if (task)
+ force_sig(SIGKILL, task);
}
-static struct cifsTconInfo *
-find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
+static struct cifsSesInfo *
+cifs_find_smb_ses(struct TCP_Server_Info *server, char *username)
{
struct list_head *tmp;
- struct cifsTconInfo *tcon;
- __be32 old_ip;
-
- read_lock(&GlobalSMBSeslock);
+ struct cifsSesInfo *ses;
- list_for_each(tmp, &GlobalTreeConnectionList) {
- cFYI(1, ("Next tcon"));
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- if (!tcon->ses || !tcon->ses->server)
+ write_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ if (strncmp(ses->userName, username, MAX_USERNAME_SIZE))
continue;
- old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr;
- cFYI(1, ("old ip addr: %x == new ip %x ?",
- old_ip, new_target_ip_addr));
+ ++ses->ses_count;
+ write_unlock(&cifs_tcp_ses_lock);
+ return ses;
+ }
+ write_unlock(&cifs_tcp_ses_lock);
+ return NULL;
+}
+
+static void
+cifs_put_smb_ses(struct cifsSesInfo *ses)
+{
+ int xid;
+ struct TCP_Server_Info *server = ses->server;
- if (old_ip != new_target_ip_addr)
- continue;
+ write_lock(&cifs_tcp_ses_lock);
+ if (--ses->ses_count > 0) {
+ write_unlock(&cifs_tcp_ses_lock);
+ return;
+ }
- /* BB lock tcon, server, tcp session and increment use count? */
- /* found a match on the TCP session */
- /* BB check if reconnection needed */
- cFYI(1, ("IP match, old UNC: %s new: %s",
- tcon->treeName, uncName));
+ list_del_init(&ses->smb_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
- if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE))
- continue;
+ if (ses->status == CifsGood) {
+ xid = GetXid();
+ CIFSSMBLogoff(xid, ses);
+ _FreeXid(xid);
+ }
+ sesInfoFree(ses);
+ cifs_put_tcp_session(server);
+}
- cFYI(1, ("and old usr: %s new: %s",
- tcon->treeName, uncName));
+static struct cifsTconInfo *
+cifs_find_tcon(struct cifsSesInfo *ses, const char *unc)
+{
+ struct list_head *tmp;
+ struct cifsTconInfo *tcon;
- if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE))
+ write_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &ses->tcon_list) {
+ tcon = list_entry(tmp, struct cifsTconInfo, tcon_list);
+ if (tcon->tidStatus == CifsExiting)
+ continue;
+ if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE))
continue;
- /* matched smb session (user name) */
- read_unlock(&GlobalSMBSeslock);
+ ++tcon->tc_count;
+ write_unlock(&cifs_tcp_ses_lock);
return tcon;
}
-
- read_unlock(&GlobalSMBSeslock);
+ write_unlock(&cifs_tcp_ses_lock);
return NULL;
}
+static void
+cifs_put_tcon(struct cifsTconInfo *tcon)
+{
+ int xid;
+ struct cifsSesInfo *ses = tcon->ses;
+
+ write_lock(&cifs_tcp_ses_lock);
+ if (--tcon->tc_count > 0) {
+ write_unlock(&cifs_tcp_ses_lock);
+ return;
+ }
+
+ list_del_init(&tcon->tcon_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ xid = GetXid();
+ CIFSSMBTDis(xid, tcon);
+ _FreeXid(xid);
+
+ DeleteTconOplockQEntries(tcon);
+ tconInfoFree(tcon);
+ cifs_put_smb_ses(ses);
+}
+
int
get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
const struct nls_table *nls_codepage, unsigned int *pnum_referrals,
@@ -1518,7 +1594,8 @@ static void rfc1002mangle(char *target, char *source, unsigned int length)
static int
ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
- char *netbios_name, char *target_name)
+ char *netbios_name, char *target_name,
+ bool noblocksnd, bool noautotune)
{
int rc = 0;
int connected = 0;
@@ -1590,11 +1667,16 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
(*csocket)->sk->sk_sndbuf,
(*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo));
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
+ if (!noblocksnd)
+ (*csocket)->sk->sk_sndtimeo = 3 * HZ;
+
/* make the bufsizes depend on wsize/rsize and max requests */
- if ((*csocket)->sk->sk_sndbuf < (200 * 1024))
- (*csocket)->sk->sk_sndbuf = 200 * 1024;
- if ((*csocket)->sk->sk_rcvbuf < (140 * 1024))
- (*csocket)->sk->sk_rcvbuf = 140 * 1024;
+ if (noautotune) {
+ if ((*csocket)->sk->sk_sndbuf < (200 * 1024))
+ (*csocket)->sk->sk_sndbuf = 200 * 1024;
+ if ((*csocket)->sk->sk_rcvbuf < (140 * 1024))
+ (*csocket)->sk->sk_rcvbuf = 140 * 1024;
+ }
/* send RFC1001 sessinit */
if (psin_server->sin_port == htons(RFC1001_PORT)) {
@@ -1631,7 +1713,7 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
/* sizeof RFC1002_SESSION_REQUEST with no scope */
smb_buf->smb_buf_length = 0x81000044;
rc = smb_send(*csocket, smb_buf, 0x44,
- (struct sockaddr *)psin_server);
+ (struct sockaddr *)psin_server, noblocksnd);
kfree(ses_init_buf);
msleep(1); /* RFC1001 layer in at least one server
requires very short break before negprot
@@ -1651,7 +1733,8 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
}
static int
-ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
+ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
+ bool noblocksnd)
{
int rc = 0;
int connected = 0;
@@ -1720,6 +1803,9 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
the default. sock_setsockopt not used because it expects
user space buffer */
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
+ if (!noblocksnd)
+ (*csocket)->sk->sk_sndtimeo = 3 * HZ;
+
return rc;
}
@@ -1857,14 +1943,90 @@ convert_delimiter(char *path, char delim)
}
}
-static void
-kill_cifsd(struct TCP_Server_Info *server)
+static void setup_cifs_sb(struct smb_vol *pvolume_info,
+ struct cifs_sb_info *cifs_sb)
{
- struct task_struct *task;
-
- task = xchg(&server->tsk, NULL);
- if (task)
- force_sig(SIGKILL, task);
+ if (pvolume_info->rsize > CIFSMaxBufSize) {
+ cERROR(1, ("rsize %d too large, using MaxBufSize",
+ pvolume_info->rsize));
+ cifs_sb->rsize = CIFSMaxBufSize;
+ } else if ((pvolume_info->rsize) &&
+ (pvolume_info->rsize <= CIFSMaxBufSize))
+ cifs_sb->rsize = pvolume_info->rsize;
+ else /* default */
+ cifs_sb->rsize = CIFSMaxBufSize;
+
+ if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
+ cERROR(1, ("wsize %d too large, using 4096 instead",
+ pvolume_info->wsize));
+ cifs_sb->wsize = 4096;
+ } else if (pvolume_info->wsize)
+ cifs_sb->wsize = pvolume_info->wsize;
+ else
+ cifs_sb->wsize = min_t(const int,
+ PAGEVEC_SIZE * PAGE_CACHE_SIZE,
+ 127*1024);
+ /* old default of CIFSMaxBufSize was too small now
+ that SMB Write2 can send multiple pages in kvec.
+ RFC1001 does not describe what happens when frame
+ bigger than 128K is sent so use that as max in
+ conjunction with 52K kvec constraint on arch with 4K
+ page size */
+
+ if (cifs_sb->rsize < 2048) {
+ cifs_sb->rsize = 2048;
+ /* Windows ME may prefer this */
+ cFYI(1, ("readsize set to minimum: 2048"));
+ }
+ /* calculate prepath */
+ cifs_sb->prepath = pvolume_info->prepath;
+ if (cifs_sb->prepath) {
+ cifs_sb->prepathlen = strlen(cifs_sb->prepath);
+ /* we can not convert the / to \ in the path
+ separators in the prefixpath yet because we do not
+ know (until reset_cifs_unix_caps is called later)
+ whether POSIX PATH CAP is available. We normalize
+ the / to \ after reset_cifs_unix_caps is called */
+ pvolume_info->prepath = NULL;
+ } else
+ cifs_sb->prepathlen = 0;
+ cifs_sb->mnt_uid = pvolume_info->linux_uid;
+ cifs_sb->mnt_gid = pvolume_info->linux_gid;
+ cifs_sb->mnt_file_mode = pvolume_info->file_mode;
+ cifs_sb->mnt_dir_mode = pvolume_info->dir_mode;
+ cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
+ cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
+
+ if (pvolume_info->noperm)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
+ if (pvolume_info->setuids)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
+ if (pvolume_info->server_ino)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
+ if (pvolume_info->remap)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
+ if (pvolume_info->no_xattr)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
+ if (pvolume_info->sfu_emul)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
+ if (pvolume_info->nobrl)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+ if (pvolume_info->cifs_acl)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
+ if (pvolume_info->override_uid)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
+ if (pvolume_info->override_gid)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
+ if (pvolume_info->dynperm)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
+ if (pvolume_info->direct_io) {
+ cFYI(1, ("mounting share using direct i/o"));
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
+ }
+
+ if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm))
+ cERROR(1, ("mount option dynperm ignored if cifsacl "
+ "mount option supported"));
}
int
@@ -1873,13 +2035,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
{
int rc = 0;
int xid;
- int address_type = AF_INET;
struct socket *csocket = NULL;
- struct sockaddr_in sin_server;
- struct sockaddr_in6 sin_server6;
+ struct sockaddr addr;
+ struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr;
+ struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr;
struct smb_vol volume_info;
struct cifsSesInfo *pSesInfo = NULL;
- struct cifsSesInfo *existingCifsSes = NULL;
struct cifsTconInfo *tcon = NULL;
struct TCP_Server_Info *srvTcp = NULL;
@@ -1887,6 +2048,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */
+ memset(&addr, 0, sizeof(struct sockaddr));
memset(&volume_info, 0, sizeof(struct smb_vol));
if (cifs_parse_mount_options(mount_data, devname, &volume_info)) {
rc = -EINVAL;
@@ -1909,16 +2071,16 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
if (volume_info.UNCip && volume_info.UNC) {
rc = cifs_inet_pton(AF_INET, volume_info.UNCip,
- &sin_server.sin_addr.s_addr);
+ &sin_server->sin_addr.s_addr);
if (rc <= 0) {
/* not ipv4 address, try ipv6 */
rc = cifs_inet_pton(AF_INET6, volume_info.UNCip,
- &sin_server6.sin6_addr.in6_u);
+ &sin_server6->sin6_addr.in6_u);
if (rc > 0)
- address_type = AF_INET6;
+ addr.sa_family = AF_INET6;
} else {
- address_type = AF_INET;
+ addr.sa_family = AF_INET;
}
if (rc <= 0) {
@@ -1958,38 +2120,25 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
}
}
- if (address_type == AF_INET)
- existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr,
- NULL /* no ipv6 addr */,
- volume_info.username, &srvTcp);
- else if (address_type == AF_INET6) {
- cFYI(1, ("looking for ipv6 address"));
- existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */,
- &sin_server6.sin6_addr,
- volume_info.username, &srvTcp);
- } else {
- rc = -EINVAL;
- goto out;
- }
-
- if (srvTcp) {
- cFYI(1, ("Existing tcp session with server found"));
- } else { /* create socket */
- if (volume_info.port)
- sin_server.sin_port = htons(volume_info.port);
- else
- sin_server.sin_port = 0;
- if (address_type == AF_INET6) {
+ srvTcp = cifs_find_tcp_session(&addr);
+ if (!srvTcp) { /* create socket */
+ if (addr.sa_family == AF_INET6) {
cFYI(1, ("attempting ipv6 connect"));
/* BB should we allow ipv6 on port 139? */
/* other OS never observed in Wild doing 139 with v6 */
- rc = ipv6_connect(&sin_server6, &csocket);
- } else
- rc = ipv4_connect(&sin_server, &csocket,
+ sin_server6->sin6_port = htons(volume_info.port);
+ rc = ipv6_connect(sin_server6, &csocket,
+ volume_info.noblocksnd);
+ } else {
+ sin_server->sin_port = htons(volume_info.port);
+ rc = ipv4_connect(sin_server, &csocket,
volume_info.source_rfc1001_name,
- volume_info.target_rfc1001_name);
+ volume_info.target_rfc1001_name,
+ volume_info.noblocksnd,
+ volume_info.noautotune);
+ }
if (rc < 0) {
- cERROR(1, ("Error connecting to IPv4 socket. "
+ cERROR(1, ("Error connecting to socket. "
"Aborting operation"));
if (csocket != NULL)
sock_release(csocket);
@@ -2002,12 +2151,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
sock_release(csocket);
goto out;
} else {
- memcpy(&srvTcp->addr.sockAddr, &sin_server,
- sizeof(struct sockaddr_in));
+ srvTcp->noblocksnd = volume_info.noblocksnd;
+ srvTcp->noautotune = volume_info.noautotune;
+ if (addr.sa_family == AF_INET6)
+ memcpy(&srvTcp->addr.sockAddr6, sin_server6,
+ sizeof(struct sockaddr_in6));
+ else
+ memcpy(&srvTcp->addr.sockAddr, sin_server,
+ sizeof(struct sockaddr_in));
atomic_set(&srvTcp->inFlight, 0);
/* BB Add code for ipv6 case too */
srvTcp->ssocket = csocket;
- srvTcp->protocolType = IPV4;
srvTcp->hostname = extract_hostname(volume_info.UNC);
if (IS_ERR(srvTcp->hostname)) {
rc = PTR_ERR(srvTcp->hostname);
@@ -2037,15 +2191,28 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
memcpy(srvTcp->server_RFC1001_name,
volume_info.target_rfc1001_name, 16);
srvTcp->sequence_number = 0;
+ INIT_LIST_HEAD(&srvTcp->tcp_ses_list);
+ INIT_LIST_HEAD(&srvTcp->smb_ses_list);
+ ++srvTcp->srv_count;
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&srvTcp->tcp_ses_list,
+ &cifs_tcp_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
}
}
- if (existingCifsSes) {
- pSesInfo = existingCifsSes;
+ pSesInfo = cifs_find_smb_ses(srvTcp, volume_info.username);
+ if (pSesInfo) {
cFYI(1, ("Existing smb sess found (status=%d)",
pSesInfo->status));
+ /*
+ * The existing SMB session already has a reference to srvTcp,
+ * so we can put back the extra one we got before
+ */
+ cifs_put_tcp_session(srvTcp);
+
down(&pSesInfo->sesSem);
- if (pSesInfo->status == CifsNeedReconnect) {
+ if (pSesInfo->need_reconnect) {
cFYI(1, ("Session needs reconnect"));
rc = cifs_setup_session(xid, pSesInfo,
cifs_sb->local_nls);
@@ -2054,187 +2221,101 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
} else if (!rc) {
cFYI(1, ("Existing smb sess not found"));
pSesInfo = sesInfoAlloc();
- if (pSesInfo == NULL)
+ if (pSesInfo == NULL) {
rc = -ENOMEM;
- else {
- pSesInfo->server = srvTcp;
- sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
- NIPQUAD(sin_server.sin_addr.s_addr));
- }
+ goto mount_fail_check;
+ }
+
+ /* new SMB session uses our srvTcp ref */
+ pSesInfo->server = srvTcp;
+ sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
+ NIPQUAD(sin_server->sin_addr.s_addr));
+
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ /* volume_info.password freed at unmount */
+ if (volume_info.password) {
+ pSesInfo->password = volume_info.password;
+ /* set to NULL to prevent freeing on exit */
+ volume_info.password = NULL;
+ }
+ if (volume_info.username)
+ strncpy(pSesInfo->userName, volume_info.username,
+ MAX_USERNAME_SIZE);
+ if (volume_info.domainname) {
+ int len = strlen(volume_info.domainname);
+ pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL);
+ if (pSesInfo->domainName)
+ strcpy(pSesInfo->domainName,
+ volume_info.domainname);
+ }
+ pSesInfo->linux_uid = volume_info.linux_uid;
+ pSesInfo->overrideSecFlg = volume_info.secFlg;
+ down(&pSesInfo->sesSem);
- if (!rc) {
- /* volume_info.password freed at unmount */
- if (volume_info.password) {
- pSesInfo->password = volume_info.password;
- /* set to NULL to prevent freeing on exit */
- volume_info.password = NULL;
- }
- if (volume_info.username)
- strncpy(pSesInfo->userName,
- volume_info.username,
- MAX_USERNAME_SIZE);
- if (volume_info.domainname) {
- int len = strlen(volume_info.domainname);
- pSesInfo->domainName =
- kmalloc(len + 1, GFP_KERNEL);
- if (pSesInfo->domainName)
- strcpy(pSesInfo->domainName,
- volume_info.domainname);
- }
- pSesInfo->linux_uid = volume_info.linux_uid;
- pSesInfo->overrideSecFlg = volume_info.secFlg;
- down(&pSesInfo->sesSem);
- /* BB FIXME need to pass vol->secFlgs BB */
- rc = cifs_setup_session(xid, pSesInfo,
- cifs_sb->local_nls);
- up(&pSesInfo->sesSem);
- if (!rc)
- atomic_inc(&srvTcp->socketUseCount);
- }
+ /* BB FIXME need to pass vol->secFlgs BB */
+ rc = cifs_setup_session(xid, pSesInfo,
+ cifs_sb->local_nls);
+ up(&pSesInfo->sesSem);
}
/* search for existing tcon to this server share */
if (!rc) {
- if (volume_info.rsize > CIFSMaxBufSize) {
- cERROR(1, ("rsize %d too large, using MaxBufSize",
- volume_info.rsize));
- cifs_sb->rsize = CIFSMaxBufSize;
- } else if ((volume_info.rsize) &&
- (volume_info.rsize <= CIFSMaxBufSize))
- cifs_sb->rsize = volume_info.rsize;
- else /* default */
- cifs_sb->rsize = CIFSMaxBufSize;
-
- if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
- cERROR(1, ("wsize %d too large, using 4096 instead",
- volume_info.wsize));
- cifs_sb->wsize = 4096;
- } else if (volume_info.wsize)
- cifs_sb->wsize = volume_info.wsize;
- else
- cifs_sb->wsize =
- min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
- 127*1024);
- /* old default of CIFSMaxBufSize was too small now
- that SMB Write2 can send multiple pages in kvec.
- RFC1001 does not describe what happens when frame
- bigger than 128K is sent so use that as max in
- conjunction with 52K kvec constraint on arch with 4K
- page size */
-
- if (cifs_sb->rsize < 2048) {
- cifs_sb->rsize = 2048;
- /* Windows ME may prefer this */
- cFYI(1, ("readsize set to minimum: 2048"));
- }
- /* calculate prepath */
- cifs_sb->prepath = volume_info.prepath;
- if (cifs_sb->prepath) {
- cifs_sb->prepathlen = strlen(cifs_sb->prepath);
- /* we can not convert the / to \ in the path
- separators in the prefixpath yet because we do not
- know (until reset_cifs_unix_caps is called later)
- whether POSIX PATH CAP is available. We normalize
- the / to \ after reset_cifs_unix_caps is called */
- volume_info.prepath = NULL;
- } else
- cifs_sb->prepathlen = 0;
- cifs_sb->mnt_uid = volume_info.linux_uid;
- cifs_sb->mnt_gid = volume_info.linux_gid;
- cifs_sb->mnt_file_mode = volume_info.file_mode;
- cifs_sb->mnt_dir_mode = volume_info.dir_mode;
- cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
- cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
-
- if (volume_info.noperm)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
- if (volume_info.setuids)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
- if (volume_info.server_ino)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
- if (volume_info.remap)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
- if (volume_info.no_xattr)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
- if (volume_info.sfu_emul)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
- if (volume_info.nobrl)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
- if (volume_info.cifs_acl)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
- if (volume_info.override_uid)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
- if (volume_info.override_gid)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
- if (volume_info.dynperm)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
- if (volume_info.direct_io) {
- cFYI(1, ("mounting share using direct i/o"));
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
- }
-
- if ((volume_info.cifs_acl) && (volume_info.dynperm))
- cERROR(1, ("mount option dynperm ignored if cifsacl "
- "mount option supported"));
+ setup_cifs_sb(&volume_info, cifs_sb);
- tcon =
- find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
- volume_info.username);
+ tcon = cifs_find_tcon(pSesInfo, volume_info.UNC);
if (tcon) {
cFYI(1, ("Found match on UNC path"));
- /* we can have only one retry value for a connection
- to a share so for resources mounted more than once
- to the same server share the last value passed in
- for the retry flag is used */
- tcon->retry = volume_info.retry;
- tcon->nocase = volume_info.nocase;
- tcon->local_lease = volume_info.local_lease;
+ /* existing tcon already has a reference */
+ cifs_put_smb_ses(pSesInfo);
if (tcon->seal != volume_info.seal)
cERROR(1, ("transport encryption setting "
"conflicts with existing tid"));
} else {
tcon = tconInfoAlloc();
- if (tcon == NULL)
+ if (tcon == NULL) {
rc = -ENOMEM;
- else {
- /* check for null share name ie connecting to
- * dfs root */
-
- /* BB check if this works for exactly length
- * three strings */
- if ((strchr(volume_info.UNC + 3, '\\') == NULL)
- && (strchr(volume_info.UNC + 3, '/') ==
- NULL)) {
-/* rc = connect_to_dfs_path(xid, pSesInfo,
- "", cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);*/
- cFYI(1, ("DFS root not supported"));
- rc = -ENODEV;
- goto out;
- } else {
- /* BB Do we need to wrap sesSem around
- * this TCon call and Unix SetFS as
- * we do on SessSetup and reconnect? */
- rc = CIFSTCon(xid, pSesInfo,
- volume_info.UNC,
- tcon, cifs_sb->local_nls);
- cFYI(1, ("CIFS Tcon rc = %d", rc));
- if (volume_info.nodfs) {
- tcon->Flags &=
- ~SMB_SHARE_IS_IN_DFS;
- cFYI(1, ("DFS disabled (%d)",
- tcon->Flags));
- }
- }
- if (!rc) {
- atomic_inc(&pSesInfo->inUse);
- tcon->retry = volume_info.retry;
- tcon->nocase = volume_info.nocase;
- tcon->seal = volume_info.seal;
+ goto mount_fail_check;
+ }
+ tcon->ses = pSesInfo;
+
+ /* check for null share name ie connect to dfs root */
+ if ((strchr(volume_info.UNC + 3, '\\') == NULL)
+ && (strchr(volume_info.UNC + 3, '/') == NULL)) {
+ /* rc = connect_to_dfs_path(...) */
+ cFYI(1, ("DFS root not supported"));
+ rc = -ENODEV;
+ goto mount_fail_check;
+ } else {
+ /* BB Do we need to wrap sesSem around
+ * this TCon call and Unix SetFS as
+ * we do on SessSetup and reconnect? */
+ rc = CIFSTCon(xid, pSesInfo, volume_info.UNC,
+ tcon, cifs_sb->local_nls);
+ cFYI(1, ("CIFS Tcon rc = %d", rc));
+ if (volume_info.nodfs) {
+ tcon->Flags &= ~SMB_SHARE_IS_IN_DFS;
+ cFYI(1, ("DFS disabled (%d)",
+ tcon->Flags));
}
}
- }
+ if (rc)
+ goto mount_fail_check;
+ tcon->seal = volume_info.seal;
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&tcon->tcon_list, &pSesInfo->tcon_list);
+ write_unlock(&cifs_tcp_ses_lock);
+ }
+
+ /* we can have only one retry value for a connection
+ to a share so for resources mounted more than once
+ to the same server share the last value passed in
+ for the retry flag is used */
+ tcon->retry = volume_info.retry;
+ tcon->nocase = volume_info.nocase;
+ tcon->local_lease = volume_info.local_lease;
}
if (pSesInfo) {
if (pSesInfo->capabilities & CAP_LARGE_FILES) {
@@ -2246,80 +2327,49 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* BB FIXME fix time_gran to be larger for LANMAN sessions */
sb->s_time_gran = 100;
-/* on error free sesinfo and tcon struct if needed */
+mount_fail_check:
+ /* on error free sesinfo and tcon struct if needed */
if (rc) {
- /* if session setup failed, use count is zero but
- we still need to free cifsd thread */
- if (atomic_read(&srvTcp->socketUseCount) == 0) {
- spin_lock(&GlobalMid_Lock);
- srvTcp->tcpStatus = CifsExiting;
- spin_unlock(&GlobalMid_Lock);
- kill_cifsd(srvTcp);
- }
- /* If find_unc succeeded then rc == 0 so we can not end */
- if (tcon) /* up accidently freeing someone elses tcon struct */
- tconInfoFree(tcon);
- if (existingCifsSes == NULL) {
- if (pSesInfo) {
- if ((pSesInfo->server) &&
- (pSesInfo->status == CifsGood)) {
- int temp_rc;
- temp_rc = CIFSSMBLogoff(xid, pSesInfo);
- /* if the socketUseCount is now zero */
- if ((temp_rc == -ESHUTDOWN) &&
- (pSesInfo->server))
- kill_cifsd(pSesInfo->server);
- } else {
- cFYI(1, ("No session or bad tcon"));
- if (pSesInfo->server) {
- spin_lock(&GlobalMid_Lock);
- srvTcp->tcpStatus = CifsExiting;
- spin_unlock(&GlobalMid_Lock);
- kill_cifsd(pSesInfo->server);
- }
- }
- sesInfoFree(pSesInfo);
- /* pSesInfo = NULL; */
- }
- }
- } else {
- atomic_inc(&tcon->useCount);
- cifs_sb->tcon = tcon;
- tcon->ses = pSesInfo;
-
- /* do not care if following two calls succeed - informational */
- if (!tcon->ipc) {
- CIFSSMBQFSDeviceInfo(xid, tcon);
- CIFSSMBQFSAttributeInfo(xid, tcon);
- }
-
- /* tell server which Unix caps we support */
- if (tcon->ses->capabilities & CAP_UNIX)
- /* reset of caps checks mount to see if unix extensions
- disabled for just this mount */
- reset_cifs_unix_caps(xid, tcon, sb, &volume_info);
+ /* If find_unc succeeded then rc == 0 so we can not end */
+ /* up accidently freeing someone elses tcon struct */
+ if (tcon)
+ cifs_put_tcon(tcon);
+ else if (pSesInfo)
+ cifs_put_smb_ses(pSesInfo);
else
- tcon->unix_ext = 0; /* server does not support them */
+ cifs_put_tcp_session(srvTcp);
+ goto out;
+ }
+ cifs_sb->tcon = tcon;
- /* convert forward to back slashes in prepath here if needed */
- if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
- convert_delimiter(cifs_sb->prepath,
- CIFS_DIR_SEP(cifs_sb));
+ /* do not care if following two calls succeed - informational */
+ if (!tcon->ipc) {
+ CIFSSMBQFSDeviceInfo(xid, tcon);
+ CIFSSMBQFSAttributeInfo(xid, tcon);
+ }
- if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
- cifs_sb->rsize = 1024 * 127;
- cFYI(DBG2,
- ("no very large read support, rsize now 127K"));
- }
- if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
- cifs_sb->wsize = min(cifs_sb->wsize,
- (tcon->ses->server->maxBuf -
- MAX_CIFS_HDR_SIZE));
- if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
- cifs_sb->rsize = min(cifs_sb->rsize,
- (tcon->ses->server->maxBuf -
- MAX_CIFS_HDR_SIZE));
+ /* tell server which Unix caps we support */
+ if (tcon->ses->capabilities & CAP_UNIX)
+ /* reset of caps checks mount to see if unix extensions
+ disabled for just this mount */
+ reset_cifs_unix_caps(xid, tcon, sb, &volume_info);
+ else
+ tcon->unix_ext = 0; /* server does not support them */
+
+ /* convert forward to back slashes in prepath here if needed */
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
+ convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb));
+
+ if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
+ cifs_sb->rsize = 1024 * 127;
+ cFYI(DBG2, ("no very large read support, rsize now 127K"));
}
+ if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
+ cifs_sb->wsize = min(cifs_sb->wsize,
+ (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
+ if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
+ cifs_sb->rsize = min(cifs_sb->rsize,
+ (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
/* volume_info.password is freed above when existing session found
(in which case it is not needed anymore) but when new sesion is created
@@ -3489,6 +3539,7 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
/* above now done in SendReceive */
if ((rc == 0) && (tcon != NULL)) {
tcon->tidStatus = CifsGood;
+ tcon->need_reconnect = false;
tcon->tid = smb_buffer_response->Tid;
bcc_ptr = pByteArea(smb_buffer_response);
length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
@@ -3560,48 +3611,17 @@ int
cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
{
int rc = 0;
- int xid;
- struct cifsSesInfo *ses = NULL;
char *tmp;
- xid = GetXid();
-
- if (cifs_sb->tcon) {
- ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/
- rc = CIFSSMBTDis(xid, cifs_sb->tcon);
- if (rc == -EBUSY) {
- FreeXid(xid);
- return 0;
- }
- DeleteTconOplockQEntries(cifs_sb->tcon);
- tconInfoFree(cifs_sb->tcon);
- if ((ses) && (ses->server)) {
- /* save off task so we do not refer to ses later */
- cFYI(1, ("About to do SMBLogoff "));
- rc = CIFSSMBLogoff(xid, ses);
- if (rc == -EBUSY) {
- FreeXid(xid);
- return 0;
- } else if (rc == -ESHUTDOWN) {
- cFYI(1, ("Waking up socket by sending signal"));
- if (ses->server)
- kill_cifsd(ses->server);
- rc = 0;
- } /* else - we have an smb session
- left on this socket do not kill cifsd */
- } else
- cFYI(1, ("No session or bad tcon"));
- }
+ if (cifs_sb->tcon)
+ cifs_put_tcon(cifs_sb->tcon);
cifs_sb->tcon = NULL;
tmp = cifs_sb->prepath;
cifs_sb->prepathlen = 0;
cifs_sb->prepath = NULL;
kfree(tmp);
- if (ses)
- sesInfoFree(ses);
- FreeXid(xid);
return rc;
}
@@ -3717,6 +3737,7 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
cFYI(1, ("CIFS Session Established successfully"));
spin_lock(&GlobalMid_Lock);
pSesInfo->status = CifsGood;
+ pSesInfo->need_reconnect = false;
spin_unlock(&GlobalMid_Lock);
}
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 62d8bd8f14c..f0a81e631ae 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -488,12 +488,13 @@ int cifs_close(struct inode *inode, struct file *file)
pTcon = cifs_sb->tcon;
if (pSMBFile) {
struct cifsLockInfo *li, *tmp;
-
+ write_lock(&GlobalSMBSeslock);
pSMBFile->closePend = true;
if (pTcon) {
/* no sense reconnecting to close a file that is
already closed */
- if (pTcon->tidStatus != CifsNeedReconnect) {
+ if (!pTcon->need_reconnect) {
+ write_unlock(&GlobalSMBSeslock);
timeout = 2;
while ((atomic_read(&pSMBFile->wrtPending) != 0)
&& (timeout <= 2048)) {
@@ -510,12 +511,15 @@ int cifs_close(struct inode *inode, struct file *file)
timeout *= 4;
}
if (atomic_read(&pSMBFile->wrtPending))
- cERROR(1,
- ("close with pending writes"));
- rc = CIFSSMBClose(xid, pTcon,
+ cERROR(1, ("close with pending write"));
+ if (!pTcon->need_reconnect &&
+ !pSMBFile->invalidHandle)
+ rc = CIFSSMBClose(xid, pTcon,
pSMBFile->netfid);
- }
- }
+ } else
+ write_unlock(&GlobalSMBSeslock);
+ } else
+ write_unlock(&GlobalSMBSeslock);
/* Delete any outstanding lock records.
We'll lose them when the file is closed anyway. */
@@ -587,15 +591,18 @@ int cifs_closedir(struct inode *inode, struct file *file)
pTcon = cifs_sb->tcon;
cFYI(1, ("Freeing private data in close dir"));
+ write_lock(&GlobalSMBSeslock);
if (!pCFileStruct->srch_inf.endOfSearch &&
!pCFileStruct->invalidHandle) {
pCFileStruct->invalidHandle = true;
+ write_unlock(&GlobalSMBSeslock);
rc = CIFSFindClose(xid, pTcon, pCFileStruct->netfid);
cFYI(1, ("Closing uncompleted readdir with rc %d",
rc));
/* not much we can do if it fails anyway, ignore rc */
rc = 0;
- }
+ } else
+ write_unlock(&GlobalSMBSeslock);
ptmp = pCFileStruct->srch_inf.ntwrk_buf_start;
if (ptmp) {
cFYI(1, ("closedir free smb buf in srch struct"));
@@ -1404,7 +1411,10 @@ retry:
if ((wbc->nr_to_write -= n_iov) <= 0)
done = 1;
index = next;
- }
+ } else
+ /* Need to re-find the pages we skipped */
+ index = pvec.pages[0]->index + 1;
+
pagevec_release(&pvec);
}
if (!scanned && !done) {
@@ -1465,7 +1475,11 @@ static int cifs_write_end(struct file *file, struct address_space *mapping,
cFYI(1, ("write_end for page %p from pos %lld with %d bytes",
page, pos, copied));
- if (!PageUptodate(page) && copied == PAGE_CACHE_SIZE)
+ if (PageChecked(page)) {
+ if (copied == len)
+ SetPageUptodate(page);
+ ClearPageChecked(page);
+ } else if (!PageUptodate(page) && copied == PAGE_CACHE_SIZE)
SetPageUptodate(page);
if (!PageUptodate(page)) {
@@ -1824,7 +1838,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
pTcon = cifs_sb->tcon;
pagevec_init(&lru_pvec, 0);
- cFYI(DBG2, ("rpages: num pages %d", num_pages));
+ cFYI(DBG2, ("rpages: num pages %d", num_pages));
for (i = 0; i < num_pages; ) {
unsigned contig_pages;
struct page *tmp_page;
@@ -2052,39 +2066,70 @@ static int cifs_write_begin(struct file *file, struct address_space *mapping,
{
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
loff_t offset = pos & (PAGE_CACHE_SIZE - 1);
+ loff_t page_start = pos & PAGE_MASK;
+ loff_t i_size;
+ struct page *page;
+ int rc = 0;
cFYI(1, ("write_begin from %lld len %d", (long long)pos, len));
- *pagep = __grab_cache_page(mapping, index);
- if (!*pagep)
- return -ENOMEM;
-
- if (PageUptodate(*pagep))
- return 0;
+ page = __grab_cache_page(mapping, index);
+ if (!page) {
+ rc = -ENOMEM;
+ goto out;
+ }
- /* If we are writing a full page it will be up to date,
- no need to read from the server */
- if (len == PAGE_CACHE_SIZE && flags & AOP_FLAG_UNINTERRUPTIBLE)
- return 0;
+ if (PageUptodate(page))
+ goto out;
- if ((file->f_flags & O_ACCMODE) != O_WRONLY) {
- int rc;
+ /*
+ * If we write a full page it will be up to date, no need to read from
+ * the server. If the write is short, we'll end up doing a sync write
+ * instead.
+ */
+ if (len == PAGE_CACHE_SIZE)
+ goto out;
- /* might as well read a page, it is fast enough */
- rc = cifs_readpage_worker(file, *pagep, &offset);
+ /*
+ * optimize away the read when we have an oplock, and we're not
+ * expecting to use any of the data we'd be reading in. That
+ * is, when the page lies beyond the EOF, or straddles the EOF
+ * and the write will cover all of the existing data.
+ */
+ if (CIFS_I(mapping->host)->clientCanCacheRead) {
+ i_size = i_size_read(mapping->host);
+ if (page_start >= i_size ||
+ (offset == 0 && (pos + len) >= i_size)) {
+ zero_user_segments(page, 0, offset,
+ offset + len,
+ PAGE_CACHE_SIZE);
+ /*
+ * PageChecked means that the parts of the page
+ * to which we're not writing are considered up
+ * to date. Once the data is copied to the
+ * page, it can be set uptodate.
+ */
+ SetPageChecked(page);
+ goto out;
+ }
+ }
- /* we do not need to pass errors back
- e.g. if we do not have read access to the file
- because cifs_write_end will attempt synchronous writes
- -- shaggy */
+ if ((file->f_flags & O_ACCMODE) != O_WRONLY) {
+ /*
+ * might as well read a page, it is fast enough. If we get
+ * an error, we don't need to return it. cifs_write_end will
+ * do a sync write instead since PG_uptodate isn't set.
+ */
+ cifs_readpage_worker(file, page, &page_start);
} else {
/* we could try using another file handle if there is one -
but how would we lock it to prevent close of that handle
racing with this read? In any case
this will be written out by write_end so is fine */
}
-
- return 0;
+out:
+ *pagep = page;
+ return rc;
}
const struct address_space_operations cifs_addr_ops = {
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index d54fa8aeaea..ff8c68de4a9 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1361,9 +1361,11 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (tmprc == 0 && (info_buf_source->UniqueId ==
- info_buf_target->UniqueId))
+ info_buf_target->UniqueId)) {
/* same file, POSIX says that this is a noop */
+ rc = 0;
goto cifs_rename_exit;
+ }
} /* else ... BB we could add the same check for Windows by
checking the UniqueId via FILE_INTERNAL_INFO */
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 88786ba02d2..9ee3f689c2b 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -75,12 +75,12 @@ sesInfoAlloc(void)
ret_buf = kzalloc(sizeof(struct cifsSesInfo), GFP_KERNEL);
if (ret_buf) {
- write_lock(&GlobalSMBSeslock);
atomic_inc(&sesInfoAllocCount);
ret_buf->status = CifsNew;
- list_add(&ret_buf->cifsSessionList, &GlobalSMBSessionList);
+ ++ret_buf->ses_count;
+ INIT_LIST_HEAD(&ret_buf->smb_ses_list);
+ INIT_LIST_HEAD(&ret_buf->tcon_list);
init_MUTEX(&ret_buf->sesSem);
- write_unlock(&GlobalSMBSeslock);
}
return ret_buf;
}
@@ -93,10 +93,7 @@ sesInfoFree(struct cifsSesInfo *buf_to_free)
return;
}
- write_lock(&GlobalSMBSeslock);
atomic_dec(&sesInfoAllocCount);
- list_del(&buf_to_free->cifsSessionList);
- write_unlock(&GlobalSMBSeslock);
kfree(buf_to_free->serverOS);
kfree(buf_to_free->serverDomain);
kfree(buf_to_free->serverNOS);
@@ -111,17 +108,14 @@ tconInfoAlloc(void)
struct cifsTconInfo *ret_buf;
ret_buf = kzalloc(sizeof(struct cifsTconInfo), GFP_KERNEL);
if (ret_buf) {
- write_lock(&GlobalSMBSeslock);
atomic_inc(&tconInfoAllocCount);
- list_add(&ret_buf->cifsConnectionList,
- &GlobalTreeConnectionList);
ret_buf->tidStatus = CifsNew;
+ ++ret_buf->tc_count;
INIT_LIST_HEAD(&ret_buf->openFileList);
- init_MUTEX(&ret_buf->tconSem);
+ INIT_LIST_HEAD(&ret_buf->tcon_list);
#ifdef CONFIG_CIFS_STATS
spin_lock_init(&ret_buf->stat_lock);
#endif
- write_unlock(&GlobalSMBSeslock);
}
return ret_buf;
}
@@ -133,10 +127,7 @@ tconInfoFree(struct cifsTconInfo *buf_to_free)
cFYI(1, ("Null buffer passed to tconInfoFree"));
return;
}
- write_lock(&GlobalSMBSeslock);
atomic_dec(&tconInfoAllocCount);
- list_del(&buf_to_free->cifsConnectionList);
- write_unlock(&GlobalSMBSeslock);
kfree(buf_to_free->nativeFileSystem);
kfree(buf_to_free);
}
@@ -350,9 +341,9 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
if (current->fsuid != treeCon->ses->linux_uid) {
cFYI(1, ("Multiuser mode and UID "
"did not match tcon uid"));
- read_lock(&GlobalSMBSeslock);
- list_for_each(temp_item, &GlobalSMBSessionList) {
- ses = list_entry(temp_item, struct cifsSesInfo, cifsSessionList);
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
+ ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
if (ses->linux_uid == current->fsuid) {
if (ses->server == treeCon->ses->server) {
cFYI(1, ("found matching uid substitute right smb_uid"));
@@ -364,7 +355,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
}
}
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
}
}
}
@@ -497,9 +488,10 @@ bool
is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
{
struct smb_com_lock_req *pSMB = (struct smb_com_lock_req *)buf;
- struct list_head *tmp;
- struct list_head *tmp1;
+ struct list_head *tmp, *tmp1, *tmp2;
+ struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
+ struct cifsInodeInfo *pCifsInode;
struct cifsFileInfo *netfile;
cFYI(1, ("Checking for oplock break or dnotify response"));
@@ -554,42 +546,45 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
return false;
/* look up tcon based on tid & uid */
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalTreeConnectionList) {
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- if ((tcon->tid == buf->Tid) && (srv == tcon->ses->server)) {
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &srv->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ list_for_each(tmp1, &ses->tcon_list) {
+ tcon = list_entry(tmp1, struct cifsTconInfo, tcon_list);
+ if (tcon->tid != buf->Tid)
+ continue;
+
cifs_stats_inc(&tcon->num_oplock_brks);
- list_for_each(tmp1, &tcon->openFileList) {
- netfile = list_entry(tmp1, struct cifsFileInfo,
+ write_lock(&GlobalSMBSeslock);
+ list_for_each(tmp2, &tcon->openFileList) {
+ netfile = list_entry(tmp2, struct cifsFileInfo,
tlist);
- if (pSMB->Fid == netfile->netfid) {
- struct cifsInodeInfo *pCifsInode;
- read_unlock(&GlobalSMBSeslock);
- cFYI(1,
- ("file id match, oplock break"));
- pCifsInode =
- CIFS_I(netfile->pInode);
- pCifsInode->clientCanCacheAll = false;
- if (pSMB->OplockLevel == 0)
- pCifsInode->clientCanCacheRead
- = false;
- pCifsInode->oplockPending = true;
- AllocOplockQEntry(netfile->pInode,
- netfile->netfid,
- tcon);
- cFYI(1,
- ("about to wake up oplock thread"));
- if (oplockThread)
- wake_up_process(oplockThread);
- return true;
- }
+ if (pSMB->Fid != netfile->netfid)
+ continue;
+
+ write_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
+ cFYI(1, ("file id match, oplock break"));
+ pCifsInode = CIFS_I(netfile->pInode);
+ pCifsInode->clientCanCacheAll = false;
+ if (pSMB->OplockLevel == 0)
+ pCifsInode->clientCanCacheRead = false;
+ pCifsInode->oplockPending = true;
+ AllocOplockQEntry(netfile->pInode,
+ netfile->netfid, tcon);
+ cFYI(1, ("about to wake up oplock thread"));
+ if (oplockThread)
+ wake_up_process(oplockThread);
+
+ return true;
}
- read_unlock(&GlobalSMBSeslock);
+ write_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("No matching file for oplock break"));
return true;
}
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("Can not process oplock break for non-existent connection"));
return true;
}
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 58d57299f2a..9f51f9bf029 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -741,11 +741,14 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
(index_to_find < first_entry_in_buffer)) {
/* close and restart search */
cFYI(1, ("search backing up - close and restart search"));
+ write_lock(&GlobalSMBSeslock);
if (!cifsFile->srch_inf.endOfSearch &&
!cifsFile->invalidHandle) {
cifsFile->invalidHandle = true;
+ write_unlock(&GlobalSMBSeslock);
CIFSFindClose(xid, pTcon, cifsFile->netfid);
- }
+ } else
+ write_unlock(&GlobalSMBSeslock);
if (cifsFile->srch_inf.ntwrk_buf_start) {
cFYI(1, ("freeing SMB ff cache buf on search rewind"));
if (cifsFile->srch_inf.smallBuf)
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index bf0e6d8e382..ff8243a8fe3 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -161,7 +161,7 @@ void DeleteTconOplockQEntries(struct cifsTconInfo *tcon)
int
smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
- unsigned int smb_buf_length, struct sockaddr *sin)
+ unsigned int smb_buf_length, struct sockaddr *sin, bool noblocksnd)
{
int rc = 0;
int i = 0;
@@ -178,7 +178,10 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
smb_msg.msg_namelen = sizeof(struct sockaddr);
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;
- smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/
+ if (noblocksnd)
+ smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
+ else
+ smb_msg.msg_flags = MSG_NOSIGNAL;
/* smb header is converted in header_assemble. bcc and rest of SMB word
area, and byte area if necessary, is converted to littleendian in
@@ -229,8 +232,8 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
}
static int
-smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
- struct sockaddr *sin)
+smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
+ struct sockaddr *sin, bool noblocksnd)
{
int rc = 0;
int i = 0;
@@ -240,6 +243,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
unsigned int total_len;
int first_vec = 0;
unsigned int smb_buf_length = smb_buffer->smb_buf_length;
+ struct socket *ssocket = server->ssocket;
if (ssocket == NULL)
return -ENOTSOCK; /* BB eventually add reconnect code here */
@@ -248,7 +252,10 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
smb_msg.msg_namelen = sizeof(struct sockaddr);
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;
- smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/
+ if (noblocksnd)
+ smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
+ else
+ smb_msg.msg_flags = MSG_NOSIGNAL;
/* smb header is converted in header_assemble. bcc and rest of SMB word
area, and byte area if necessary, is converted to littleendian in
@@ -283,8 +290,11 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
if (rc < 0)
break;
- if (rc >= total_len) {
- WARN_ON(rc > total_len);
+ if (rc == total_len) {
+ total_len = 0;
+ break;
+ } else if (rc > total_len) {
+ cERROR(1, ("sent %d requested %d", rc, total_len));
break;
}
if (rc == 0) {
@@ -312,6 +322,16 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
i = 0; /* in case we get ENOSPC on the next send */
}
+ if ((total_len > 0) && (total_len != smb_buf_length + 4)) {
+ cFYI(1, ("partial send (%d remaining), terminating session",
+ total_len));
+ /* If we have only sent part of an SMB then the next SMB
+ could be taken as the remainder of this one. We need
+ to kill the socket so the server throws away the partial
+ SMB */
+ server->tcpStatus = CifsNeedReconnect;
+ }
+
if (rc < 0) {
cERROR(1, ("Error %d sending data on socket to server", rc));
} else
@@ -518,8 +538,9 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->inSend);
#endif
- rc = smb_send2(ses->server->ssocket, iov, n_vec,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ rc = smb_send2(ses->server, iov, n_vec,
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
@@ -711,7 +732,8 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
@@ -851,7 +873,8 @@ send_nt_cancel(struct cifsTconInfo *tcon, struct smb_hdr *in_buf,
return rc;
}
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
up(&ses->server->tcpSem);
return rc;
}
@@ -941,7 +964,8 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index cfd29da714d..0376ac66c44 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -2,7 +2,7 @@
* An implementation of a loadable kernel mode driver providing
* multiple kernel/user space bidirectional communications links.
*
- * Author: Alan Cox <alan@redhat.com>
+ * Author: Alan Cox <alan@lxorguk.ukuu.org.uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index d910501de6d..8d86b7960f0 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -812,7 +812,7 @@ int dlm_release_lockspace(void *lockspace, int force)
error = release_lockspace(ls, force);
if (!error)
ls_count--;
- else if (!ls_count)
+ if (!ls_count)
threads_stop();
mutex_unlock(&ls_lock);
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index 06db79d05c1..6046239465a 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -1251,6 +1251,7 @@ struct kmem_cache *ecryptfs_header_cache_2;
/**
* ecryptfs_write_headers_virt
* @page_virt: The virtual address to write the headers to
+ * @max: The size of memory allocated at page_virt
* @size: Set to the number of bytes written by this function
* @crypt_stat: The cryptographic context
* @ecryptfs_dentry: The eCryptfs dentry
@@ -1278,7 +1279,8 @@ struct kmem_cache *ecryptfs_header_cache_2;
*
* Returns zero on success
*/
-static int ecryptfs_write_headers_virt(char *page_virt, size_t *size,
+static int ecryptfs_write_headers_virt(char *page_virt, size_t max,
+ size_t *size,
struct ecryptfs_crypt_stat *crypt_stat,
struct dentry *ecryptfs_dentry)
{
@@ -1296,7 +1298,7 @@ static int ecryptfs_write_headers_virt(char *page_virt, size_t *size,
offset += written;
rc = ecryptfs_generate_key_packet_set((page_virt + offset), crypt_stat,
ecryptfs_dentry, &written,
- PAGE_CACHE_SIZE - offset);
+ max - offset);
if (rc)
ecryptfs_printk(KERN_WARNING, "Error generating key packet "
"set; rc = [%d]\n", rc);
@@ -1368,14 +1370,14 @@ int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry)
goto out;
}
/* Released in this function */
- virt = kzalloc(crypt_stat->num_header_bytes_at_front, GFP_KERNEL);
+ virt = (char *)get_zeroed_page(GFP_KERNEL);
if (!virt) {
printk(KERN_ERR "%s: Out of memory\n", __func__);
rc = -ENOMEM;
goto out;
}
- rc = ecryptfs_write_headers_virt(virt, &size, crypt_stat,
- ecryptfs_dentry);
+ rc = ecryptfs_write_headers_virt(virt, PAGE_CACHE_SIZE, &size,
+ crypt_stat, ecryptfs_dentry);
if (unlikely(rc)) {
printk(KERN_ERR "%s: Error whilst writing headers; rc = [%d]\n",
__func__, rc);
@@ -1393,8 +1395,7 @@ int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry)
goto out_free;
}
out_free:
- memset(virt, 0, crypt_stat->num_header_bytes_at_front);
- kfree(virt);
+ free_page((unsigned long)virt);
out:
return rc;
}
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index e22bc396134..0d713b69194 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -1037,17 +1037,14 @@ static int
decrypt_passphrase_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
struct ecryptfs_crypt_stat *crypt_stat)
{
- struct scatterlist dst_sg;
- struct scatterlist src_sg;
+ struct scatterlist dst_sg[2];
+ struct scatterlist src_sg[2];
struct mutex *tfm_mutex;
struct blkcipher_desc desc = {
.flags = CRYPTO_TFM_REQ_MAY_SLEEP
};
int rc = 0;
- sg_init_table(&dst_sg, 1);
- sg_init_table(&src_sg, 1);
-
if (unlikely(ecryptfs_verbosity > 0)) {
ecryptfs_printk(
KERN_DEBUG, "Session key encryption key (size [%d]):\n",
@@ -1066,8 +1063,8 @@ decrypt_passphrase_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
}
rc = virt_to_scatterlist(auth_tok->session_key.encrypted_key,
auth_tok->session_key.encrypted_key_size,
- &src_sg, 1);
- if (rc != 1) {
+ src_sg, 2);
+ if (rc < 1 || rc > 2) {
printk(KERN_ERR "Internal error whilst attempting to convert "
"auth_tok->session_key.encrypted_key to scatterlist; "
"expected rc = 1; got rc = [%d]. "
@@ -1079,8 +1076,8 @@ decrypt_passphrase_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
auth_tok->session_key.encrypted_key_size;
rc = virt_to_scatterlist(auth_tok->session_key.decrypted_key,
auth_tok->session_key.decrypted_key_size,
- &dst_sg, 1);
- if (rc != 1) {
+ dst_sg, 2);
+ if (rc < 1 || rc > 2) {
printk(KERN_ERR "Internal error whilst attempting to convert "
"auth_tok->session_key.decrypted_key to scatterlist; "
"expected rc = 1; got rc = [%d]\n", rc);
@@ -1096,7 +1093,7 @@ decrypt_passphrase_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
rc = -EINVAL;
goto out;
}
- rc = crypto_blkcipher_decrypt(&desc, &dst_sg, &src_sg,
+ rc = crypto_blkcipher_decrypt(&desc, dst_sg, src_sg,
auth_tok->session_key.encrypted_key_size);
mutex_unlock(tfm_mutex);
if (unlikely(rc)) {
@@ -1539,8 +1536,8 @@ write_tag_3_packet(char *dest, size_t *remaining_bytes,
size_t i;
size_t encrypted_session_key_valid = 0;
char session_key_encryption_key[ECRYPTFS_MAX_KEY_BYTES];
- struct scatterlist dst_sg;
- struct scatterlist src_sg;
+ struct scatterlist dst_sg[2];
+ struct scatterlist src_sg[2];
struct mutex *tfm_mutex = NULL;
u8 cipher_code;
size_t packet_size_length;
@@ -1619,8 +1616,8 @@ write_tag_3_packet(char *dest, size_t *remaining_bytes,
ecryptfs_dump_hex(session_key_encryption_key, 16);
}
rc = virt_to_scatterlist(crypt_stat->key, key_rec->enc_key_size,
- &src_sg, 1);
- if (rc != 1) {
+ src_sg, 2);
+ if (rc < 1 || rc > 2) {
ecryptfs_printk(KERN_ERR, "Error generating scatterlist "
"for crypt_stat session key; expected rc = 1; "
"got rc = [%d]. key_rec->enc_key_size = [%d]\n",
@@ -1629,8 +1626,8 @@ write_tag_3_packet(char *dest, size_t *remaining_bytes,
goto out;
}
rc = virt_to_scatterlist(key_rec->enc_key, key_rec->enc_key_size,
- &dst_sg, 1);
- if (rc != 1) {
+ dst_sg, 2);
+ if (rc < 1 || rc > 2) {
ecryptfs_printk(KERN_ERR, "Error generating scatterlist "
"for crypt_stat encrypted session key; "
"expected rc = 1; got rc = [%d]. "
@@ -1651,7 +1648,7 @@ write_tag_3_packet(char *dest, size_t *remaining_bytes,
rc = 0;
ecryptfs_printk(KERN_DEBUG, "Encrypting [%d] bytes of the key\n",
crypt_stat->key_size);
- rc = crypto_blkcipher_encrypt(&desc, &dst_sg, &src_sg,
+ rc = crypto_blkcipher_encrypt(&desc, dst_sg, src_sg,
(*key_rec).enc_key_size);
mutex_unlock(tfm_mutex);
if (rc) {
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 18eaa78ecb4..f6c94f232ec 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -281,7 +281,8 @@ void ext3_abort (struct super_block * sb, const char * function,
EXT3_SB(sb)->s_mount_state |= EXT3_ERROR_FS;
sb->s_flags |= MS_RDONLY;
EXT3_SB(sb)->s_mount_opt |= EXT3_MOUNT_ABORT;
- journal_abort(EXT3_SB(sb)->s_journal, -EIO);
+ if (EXT3_SB(sb)->s_journal)
+ journal_abort(EXT3_SB(sb)->s_journal, -EIO);
}
void ext3_warning (struct super_block * sb, const char * function,
@@ -390,11 +391,14 @@ static void ext3_put_super (struct super_block * sb)
{
struct ext3_sb_info *sbi = EXT3_SB(sb);
struct ext3_super_block *es = sbi->s_es;
- int i;
+ int i, err;
ext3_xattr_put_super(sb);
- if (journal_destroy(sbi->s_journal) < 0)
+ err = journal_destroy(sbi->s_journal);
+ sbi->s_journal = NULL;
+ if (err < 0)
ext3_abort(sb, __func__, "Couldn't clean up the journal");
+
if (!(sb->s_flags & MS_RDONLY)) {
EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
es->s_state = cpu_to_le16(sbi->s_mount_state);
@@ -2371,12 +2375,9 @@ int ext3_force_commit(struct super_block *sb)
/*
* Ext3 always journals updates to the superblock itself, so we don't
* have to propagate any other updates to the superblock on disk at this
- * point. Just start an async writeback to get the buffers on their way
- * to the disk.
- *
- * This implicitly triggers the writebehind on sync().
+ * point. (We can probably nuke this function altogether, and remove
+ * any mention to sb->s_dirt in all of fs/ext3; eventual cleanup...)
*/
-
static void ext3_write_super (struct super_block * sb)
{
if (mutex_trylock(&sb->s_lock) != 0)
@@ -2386,13 +2387,12 @@ static void ext3_write_super (struct super_block * sb)
static int ext3_sync_fs(struct super_block *sb, int wait)
{
- tid_t target;
-
sb->s_dirt = 0;
- if (journal_start_commit(EXT3_SB(sb)->s_journal, &target)) {
- if (wait)
- log_wait_commit(EXT3_SB(sb)->s_journal, target);
- }
+ if (wait)
+ ext3_force_commit(sb);
+ else
+ journal_start_commit(EXT3_SB(sb)->s_journal, NULL);
+
return 0;
}
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index b9821be709b..d2003cdc36a 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -589,21 +589,23 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
return;
}
-int ext4_claim_free_blocks(struct ext4_sb_info *sbi,
- s64 nblocks)
+/**
+ * ext4_has_free_blocks()
+ * @sbi: in-core super block structure.
+ * @nblocks: number of needed blocks
+ *
+ * Check if filesystem has nblocks free & available for allocation.
+ * On success return 1, return 0 on failure.
+ */
+int ext4_has_free_blocks(struct ext4_sb_info *sbi, s64 nblocks)
{
- s64 free_blocks, dirty_blocks;
- s64 root_blocks = 0;
+ s64 free_blocks, dirty_blocks, root_blocks;
struct percpu_counter *fbc = &sbi->s_freeblocks_counter;
struct percpu_counter *dbc = &sbi->s_dirtyblocks_counter;
free_blocks = percpu_counter_read_positive(fbc);
dirty_blocks = percpu_counter_read_positive(dbc);
-
- if (!capable(CAP_SYS_RESOURCE) &&
- sbi->s_resuid != current->fsuid &&
- (sbi->s_resgid == 0 || !in_group_p(sbi->s_resgid)))
- root_blocks = ext4_r_blocks_count(sbi->s_es);
+ root_blocks = ext4_r_blocks_count(sbi->s_es);
if (free_blocks - (nblocks + root_blocks + dirty_blocks) <
EXT4_FREEBLOCKS_WATERMARK) {
@@ -616,57 +618,32 @@ int ext4_claim_free_blocks(struct ext4_sb_info *sbi,
}
}
/* Check whether we have space after
- * accounting for current dirty blocks
+ * accounting for current dirty blocks & root reserved blocks.
*/
- if (free_blocks < ((root_blocks + nblocks) + dirty_blocks))
- /* we don't have free space */
- return -ENOSPC;
+ if (free_blocks >= ((root_blocks + nblocks) + dirty_blocks))
+ return 1;
+
+ /* Hm, nope. Are (enough) root reserved blocks available? */
+ if (sbi->s_resuid == current->fsuid ||
+ ((sbi->s_resgid != 0) && in_group_p(sbi->s_resgid)) ||
+ capable(CAP_SYS_RESOURCE)) {
+ if (free_blocks >= (nblocks + dirty_blocks))
+ return 1;
+ }
- /* Add the blocks to nblocks */
- percpu_counter_add(dbc, nblocks);
return 0;
}
-/**
- * ext4_has_free_blocks()
- * @sbi: in-core super block structure.
- * @nblocks: number of neeed blocks
- *
- * Check if filesystem has free blocks available for allocation.
- * Return the number of blocks avaible for allocation for this request
- * On success, return nblocks
- */
-ext4_fsblk_t ext4_has_free_blocks(struct ext4_sb_info *sbi,
+int ext4_claim_free_blocks(struct ext4_sb_info *sbi,
s64 nblocks)
{
- s64 free_blocks, dirty_blocks;
- s64 root_blocks = 0;
- struct percpu_counter *fbc = &sbi->s_freeblocks_counter;
- struct percpu_counter *dbc = &sbi->s_dirtyblocks_counter;
-
- free_blocks = percpu_counter_read_positive(fbc);
- dirty_blocks = percpu_counter_read_positive(dbc);
-
- if (!capable(CAP_SYS_RESOURCE) &&
- sbi->s_resuid != current->fsuid &&
- (sbi->s_resgid == 0 || !in_group_p(sbi->s_resgid)))
- root_blocks = ext4_r_blocks_count(sbi->s_es);
-
- if (free_blocks - (nblocks + root_blocks + dirty_blocks) <
- EXT4_FREEBLOCKS_WATERMARK) {
- free_blocks = percpu_counter_sum(fbc);
- dirty_blocks = percpu_counter_sum(dbc);
- }
- if (free_blocks <= (root_blocks + dirty_blocks))
- /* we don't have free space */
+ if (ext4_has_free_blocks(sbi, nblocks)) {
+ percpu_counter_add(&sbi->s_dirtyblocks_counter, nblocks);
return 0;
-
- if (free_blocks - (root_blocks + dirty_blocks) < nblocks)
- return free_blocks - (root_blocks + dirty_blocks);
- return nblocks;
+ } else
+ return -ENOSPC;
}
-
/**
* ext4_should_retry_alloc()
* @sb: super block
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 4880cc3e672..b0537c82702 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1003,8 +1003,7 @@ extern ext4_fsblk_t ext4_new_blocks(handle_t *handle, struct inode *inode,
ext4_lblk_t iblock, ext4_fsblk_t goal,
unsigned long *count, int *errp);
extern int ext4_claim_free_blocks(struct ext4_sb_info *sbi, s64 nblocks);
-extern ext4_fsblk_t ext4_has_free_blocks(struct ext4_sb_info *sbi,
- s64 nblocks);
+extern int ext4_has_free_blocks(struct ext4_sb_info *sbi, s64 nblocks);
extern void ext4_free_blocks(handle_t *handle, struct inode *inode,
ext4_fsblk_t block, unsigned long count, int metadata);
extern void ext4_free_blocks_sb(handle_t *handle, struct super_block *sb,
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index fe34d74cfb1..2a117e286e5 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -718,6 +718,8 @@ got:
gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
free = ext4_free_blocks_after_init(sb, group, gdp);
gdp->bg_free_blocks_count = cpu_to_le16(free);
+ gdp->bg_checksum = ext4_group_desc_csum(sbi, group,
+ gdp);
}
spin_unlock(sb_bgl_lock(sbi, group));
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8dbf6953845..be21a5ae33c 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2329,6 +2329,8 @@ static int ext4_da_writepage(struct page *page,
unlock_page(page);
return 0;
}
+ /* now mark the buffer_heads as dirty and uptodate */
+ block_commit_write(page, 0, PAGE_CACHE_SIZE);
}
if (test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode))
@@ -4580,9 +4582,10 @@ static int ext4_indirect_trans_blocks(struct inode *inode, int nrblocks,
static int ext4_index_trans_blocks(struct inode *inode, int nrblocks, int chunk)
{
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
- return ext4_indirect_trans_blocks(inode, nrblocks, 0);
- return ext4_ext_index_trans_blocks(inode, nrblocks, 0);
+ return ext4_indirect_trans_blocks(inode, nrblocks, chunk);
+ return ext4_ext_index_trans_blocks(inode, nrblocks, chunk);
}
+
/*
* Account for index blocks, block groups bitmaps and block group
* descriptor blocks if modify datablocks and index blocks
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index dfe17a13405..444ad998f72 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4441,6 +4441,7 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
else if (block >= (entry->start_blk + entry->count))
n = &(*n)->rb_right;
else {
+ ext4_unlock_group(sb, group);
ext4_error(sb, __func__,
"Double free of blocks %d (%d %d)\n",
block, entry->start_blk, entry->count);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index bdddea14e78..e4a241c65db 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -333,7 +333,8 @@ void ext4_abort(struct super_block *sb, const char *function,
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
sb->s_flags |= MS_RDONLY;
EXT4_SB(sb)->s_mount_opt |= EXT4_MOUNT_ABORT;
- jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
+ if (EXT4_SB(sb)->s_journal)
+ jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
}
void ext4_warning(struct super_block *sb, const char *function,
@@ -442,14 +443,16 @@ static void ext4_put_super(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
- int i;
+ int i, err;
ext4_mb_release(sb);
ext4_ext_release(sb);
ext4_xattr_put_super(sb);
- if (jbd2_journal_destroy(sbi->s_journal) < 0)
- ext4_abort(sb, __func__, "Couldn't clean up the journal");
+ err = jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
+ if (err < 0)
+ ext4_abort(sb, __func__, "Couldn't clean up the journal");
+
if (!(sb->s_flags & MS_RDONLY)) {
EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
es->s_state = cpu_to_le16(sbi->s_mount_state);
@@ -1455,9 +1458,8 @@ static int ext4_fill_flex_info(struct super_block *sb)
/* We allocate both existing and potentially added groups */
flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
- ((sbi->s_es->s_reserved_gdt_blocks +1 ) <<
- EXT4_DESC_PER_BLOCK_BITS(sb))) /
- groups_per_flex;
+ ((le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) + 1) <<
+ EXT4_DESC_PER_BLOCK_BITS(sb))) / groups_per_flex;
sbi->s_flex_groups = kzalloc(flex_group_count *
sizeof(struct flex_groups), GFP_KERNEL);
if (sbi->s_flex_groups == NULL) {
@@ -2882,12 +2884,9 @@ int ext4_force_commit(struct super_block *sb)
/*
* Ext4 always journals updates to the superblock itself, so we don't
* have to propagate any other updates to the superblock on disk at this
- * point. Just start an async writeback to get the buffers on their way
- * to the disk.
- *
- * This implicitly triggers the writebehind on sync().
+ * point. (We can probably nuke this function altogether, and remove
+ * any mention to sb->s_dirt in all of fs/ext4; eventual cleanup...)
*/
-
static void ext4_write_super(struct super_block *sb)
{
if (mutex_trylock(&sb->s_lock) != 0)
@@ -2897,15 +2896,15 @@ static void ext4_write_super(struct super_block *sb)
static int ext4_sync_fs(struct super_block *sb, int wait)
{
- tid_t target;
+ int ret = 0;
trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait);
sb->s_dirt = 0;
- if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) {
- if (wait)
- jbd2_log_wait_commit(EXT4_SB(sb)->s_journal, target);
- }
- return 0;
+ if (wait)
+ ret = ext4_force_commit(sb);
+ else
+ jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, NULL);
+ return ret;
}
/*
diff --git a/fs/fat/Makefile b/fs/fat/Makefile
index bfb5f06cf2c..e06190322c1 100644
--- a/fs/fat/Makefile
+++ b/fs/fat/Makefile
@@ -3,5 +3,9 @@
#
obj-$(CONFIG_FAT_FS) += fat.o
+obj-$(CONFIG_VFAT_FS) += vfat.o
+obj-$(CONFIG_MSDOS_FS) += msdos.o
-fat-objs := cache.o dir.o fatent.o file.o inode.o misc.o
+fat-y := cache.o dir.o fatent.o file.o inode.o misc.o
+vfat-y := namei_vfat.o
+msdos-y := namei_msdos.o
diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 3222f51c41c..b4260229808 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -9,8 +9,8 @@
*/
#include <linux/fs.h>
-#include <linux/msdos_fs.h>
#include <linux/buffer_head.h>
+#include "fat.h"
/* this must be > 0. */
#define FAT_MAX_CACHE 8
@@ -293,10 +293,12 @@ static int fat_bmap_cluster(struct inode *inode, int cluster)
}
int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
- unsigned long *mapped_blocks)
+ unsigned long *mapped_blocks, int create)
{
struct super_block *sb = inode->i_sb;
struct msdos_sb_info *sbi = MSDOS_SB(sb);
+ const unsigned long blocksize = sb->s_blocksize;
+ const unsigned char blocksize_bits = sb->s_blocksize_bits;
sector_t last_block;
int cluster, offset;
@@ -309,10 +311,21 @@ int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
}
return 0;
}
- last_block = (MSDOS_I(inode)->mmu_private + (sb->s_blocksize - 1))
- >> sb->s_blocksize_bits;
- if (sector >= last_block)
- return 0;
+
+ last_block = (i_size_read(inode) + (blocksize - 1)) >> blocksize_bits;
+ if (sector >= last_block) {
+ if (!create)
+ return 0;
+
+ /*
+ * ->mmu_private can access on only allocation path.
+ * (caller must hold ->i_mutex)
+ */
+ last_block = (MSDOS_I(inode)->mmu_private + (blocksize - 1))
+ >> blocksize_bits;
+ if (sector >= last_block)
+ return 0;
+ }
cluster = sector >> (sbi->cluster_bits - sb->s_blocksize_bits);
offset = sector & (sbi->sec_per_clus - 1);
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index bae1c329252..67e05835709 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -16,11 +16,11 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/time.h>
-#include <linux/msdos_fs.h>
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/compat.h>
#include <asm/uaccess.h>
+#include "fat.h"
static inline loff_t fat_make_i_pos(struct super_block *sb,
struct buffer_head *bh,
@@ -77,7 +77,7 @@ next:
*bh = NULL;
iblock = *pos >> sb->s_blocksize_bits;
- err = fat_bmap(dir, iblock, &phys, &mapped_blocks);
+ err = fat_bmap(dir, iblock, &phys, &mapped_blocks, 0);
if (err || !phys)
return -1; /* beyond EOF or error */
@@ -86,7 +86,7 @@ next:
*bh = sb_bread(sb, phys);
if (*bh == NULL) {
printk(KERN_ERR "FAT: Directory bread(block %llu) failed\n",
- (unsigned long long)phys);
+ (llu)phys);
/* skip this block */
*pos = (iblock + 1) << sb->s_blocksize_bits;
goto next;
@@ -373,9 +373,10 @@ parse_record:
if (de->attr == ATTR_EXT) {
int status = fat_parse_long(inode, &cpos, &bh, &de,
&unicode, &nr_slots);
- if (status < 0)
- return status;
- else if (status == PARSE_INVALID)
+ if (status < 0) {
+ err = status;
+ goto end_of_dir;
+ } else if (status == PARSE_INVALID)
continue;
else if (status == PARSE_NOT_LONGNAME)
goto parse_record;
@@ -832,6 +833,7 @@ static long fat_compat_dir_ioctl(struct file *filp, unsigned cmd,
#endif /* CONFIG_COMPAT */
const struct file_operations fat_dir_operations = {
+ .llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = fat_readdir,
.ioctl = fat_dir_ioctl,
@@ -1089,6 +1091,7 @@ int fat_alloc_new_dir(struct inode *dir, struct timespec *ts)
struct msdos_dir_entry *de;
sector_t blknr;
__le16 date, time;
+ u8 time_cs;
int err, cluster;
err = fat_alloc_clusters(dir, &cluster, 1);
@@ -1102,7 +1105,7 @@ int fat_alloc_new_dir(struct inode *dir, struct timespec *ts)
goto error_free;
}
- fat_date_unix2dos(ts->tv_sec, &time, &date, sbi->options.tz_utc);
+ fat_time_unix2fat(sbi, ts, &time, &date, &time_cs);
de = (struct msdos_dir_entry *)bhs[0]->b_data;
/* filling the new directory slots ("." and ".." entries) */
@@ -1112,13 +1115,14 @@ int fat_alloc_new_dir(struct inode *dir, struct timespec *ts)
de[0].lcase = de[1].lcase = 0;
de[0].time = de[1].time = time;
de[0].date = de[1].date = date;
- de[0].ctime_cs = de[1].ctime_cs = 0;
if (sbi->options.isvfat) {
/* extra timestamps */
de[0].ctime = de[1].ctime = time;
+ de[0].ctime_cs = de[1].ctime_cs = time_cs;
de[0].adate = de[0].cdate = de[1].adate = de[1].cdate = date;
} else {
de[0].ctime = de[1].ctime = 0;
+ de[0].ctime_cs = de[1].ctime_cs = 0;
de[0].adate = de[0].cdate = de[1].adate = de[1].cdate = 0;
}
de[0].start = cpu_to_le16(cluster);
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
new file mode 100644
index 00000000000..ea440d65819
--- /dev/null
+++ b/fs/fat/fat.h
@@ -0,0 +1,329 @@
+#ifndef _FAT_H
+#define _FAT_H
+
+#include <linux/buffer_head.h>
+#include <linux/string.h>
+#include <linux/nls.h>
+#include <linux/fs.h>
+#include <linux/mutex.h>
+#include <linux/msdos_fs.h>
+
+/*
+ * vfat shortname flags
+ */
+#define VFAT_SFN_DISPLAY_LOWER 0x0001 /* convert to lowercase for display */
+#define VFAT_SFN_DISPLAY_WIN95 0x0002 /* emulate win95 rule for display */
+#define VFAT_SFN_DISPLAY_WINNT 0x0004 /* emulate winnt rule for display */
+#define VFAT_SFN_CREATE_WIN95 0x0100 /* emulate win95 rule for create */
+#define VFAT_SFN_CREATE_WINNT 0x0200 /* emulate winnt rule for create */
+
+struct fat_mount_options {
+ uid_t fs_uid;
+ gid_t fs_gid;
+ unsigned short fs_fmask;
+ unsigned short fs_dmask;
+ unsigned short codepage; /* Codepage for shortname conversions */
+ char *iocharset; /* Charset used for filename input/display */
+ unsigned short shortname; /* flags for shortname display/create rule */
+ unsigned char name_check; /* r = relaxed, n = normal, s = strict */
+ unsigned short allow_utime;/* permission for setting the [am]time */
+ unsigned quiet:1, /* set = fake successful chmods and chowns */
+ showexec:1, /* set = only set x bit for com/exe/bat */
+ sys_immutable:1, /* set = system files are immutable */
+ dotsOK:1, /* set = hidden and system files are named '.filename' */
+ isvfat:1, /* 0=no vfat long filename support, 1=vfat support */
+ utf8:1, /* Use of UTF-8 character set (Default) */
+ unicode_xlate:1, /* create escape sequences for unhandled Unicode */
+ numtail:1, /* Does first alias have a numeric '~1' type tail? */
+ flush:1, /* write things quickly */
+ nocase:1, /* Does this need case conversion? 0=need case conversion*/
+ usefree:1, /* Use free_clusters for FAT32 */
+ tz_utc:1, /* Filesystem timestamps are in UTC */
+ rodir:1; /* allow ATTR_RO for directory */
+};
+
+#define FAT_HASH_BITS 8
+#define FAT_HASH_SIZE (1UL << FAT_HASH_BITS)
+
+/*
+ * MS-DOS file system in-core superblock data
+ */
+struct msdos_sb_info {
+ unsigned short sec_per_clus; /* sectors/cluster */
+ unsigned short cluster_bits; /* log2(cluster_size) */
+ unsigned int cluster_size; /* cluster size */
+ unsigned char fats,fat_bits; /* number of FATs, FAT bits (12 or 16) */
+ unsigned short fat_start;
+ unsigned long fat_length; /* FAT start & length (sec.) */
+ unsigned long dir_start;
+ unsigned short dir_entries; /* root dir start & entries */
+ unsigned long data_start; /* first data sector */
+ unsigned long max_cluster; /* maximum cluster number */
+ unsigned long root_cluster; /* first cluster of the root directory */
+ unsigned long fsinfo_sector; /* sector number of FAT32 fsinfo */
+ struct mutex fat_lock;
+ unsigned int prev_free; /* previously allocated cluster number */
+ unsigned int free_clusters; /* -1 if undefined */
+ unsigned int free_clus_valid; /* is free_clusters valid? */
+ struct fat_mount_options options;
+ struct nls_table *nls_disk; /* Codepage used on disk */
+ struct nls_table *nls_io; /* Charset used for input and display */
+ const void *dir_ops; /* Opaque; default directory operations */
+ int dir_per_block; /* dir entries per block */
+ int dir_per_block_bits; /* log2(dir_per_block) */
+
+ int fatent_shift;
+ struct fatent_operations *fatent_ops;
+
+ spinlock_t inode_hash_lock;
+ struct hlist_head inode_hashtable[FAT_HASH_SIZE];
+};
+
+#define FAT_CACHE_VALID 0 /* special case for valid cache */
+
+/*
+ * MS-DOS file system inode data in memory
+ */
+struct msdos_inode_info {
+ spinlock_t cache_lru_lock;
+ struct list_head cache_lru;
+ int nr_caches;
+ /* for avoiding the race between fat_free() and fat_get_cluster() */
+ unsigned int cache_valid_id;
+
+ /* NOTE: mmu_private is 64bits, so must hold ->i_mutex to access */
+ loff_t mmu_private; /* physically allocated size */
+
+ int i_start; /* first cluster or 0 */
+ int i_logstart; /* logical first cluster */
+ int i_attrs; /* unused attribute bits */
+ loff_t i_pos; /* on-disk position of directory entry or 0 */
+ struct hlist_node i_fat_hash; /* hash by i_location */
+ struct inode vfs_inode;
+};
+
+struct fat_slot_info {
+ loff_t i_pos; /* on-disk position of directory entry */
+ loff_t slot_off; /* offset for slot or de start */
+ int nr_slots; /* number of slots + 1(de) in filename */
+ struct msdos_dir_entry *de;
+ struct buffer_head *bh;
+};
+
+static inline struct msdos_sb_info *MSDOS_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+static inline struct msdos_inode_info *MSDOS_I(struct inode *inode)
+{
+ return container_of(inode, struct msdos_inode_info, vfs_inode);
+}
+
+/*
+ * If ->i_mode can't hold S_IWUGO (i.e. ATTR_RO), we use ->i_attrs to
+ * save ATTR_RO instead of ->i_mode.
+ *
+ * If it's directory and !sbi->options.rodir, ATTR_RO isn't read-only
+ * bit, it's just used as flag for app.
+ */
+static inline int fat_mode_can_hold_ro(struct inode *inode)
+{
+ struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
+ mode_t mask;
+
+ if (S_ISDIR(inode->i_mode)) {
+ if (!sbi->options.rodir)
+ return 0;
+ mask = ~sbi->options.fs_dmask;
+ } else
+ mask = ~sbi->options.fs_fmask;
+
+ if (!(mask & S_IWUGO))
+ return 0;
+ return 1;
+}
+
+/* Convert attribute bits and a mask to the UNIX mode. */
+static inline mode_t fat_make_mode(struct msdos_sb_info *sbi,
+ u8 attrs, mode_t mode)
+{
+ if (attrs & ATTR_RO && !((attrs & ATTR_DIR) && !sbi->options.rodir))
+ mode &= ~S_IWUGO;
+
+ if (attrs & ATTR_DIR)
+ return (mode & ~sbi->options.fs_dmask) | S_IFDIR;
+ else
+ return (mode & ~sbi->options.fs_fmask) | S_IFREG;
+}
+
+/* Return the FAT attribute byte for this inode */
+static inline u8 fat_make_attrs(struct inode *inode)
+{
+ u8 attrs = MSDOS_I(inode)->i_attrs;
+ if (S_ISDIR(inode->i_mode))
+ attrs |= ATTR_DIR;
+ if (fat_mode_can_hold_ro(inode) && !(inode->i_mode & S_IWUGO))
+ attrs |= ATTR_RO;
+ return attrs;
+}
+
+static inline void fat_save_attrs(struct inode *inode, u8 attrs)
+{
+ if (fat_mode_can_hold_ro(inode))
+ MSDOS_I(inode)->i_attrs = attrs & ATTR_UNUSED;
+ else
+ MSDOS_I(inode)->i_attrs = attrs & (ATTR_UNUSED | ATTR_RO);
+}
+
+static inline unsigned char fat_checksum(const __u8 *name)
+{
+ unsigned char s = name[0];
+ s = (s<<7) + (s>>1) + name[1]; s = (s<<7) + (s>>1) + name[2];
+ s = (s<<7) + (s>>1) + name[3]; s = (s<<7) + (s>>1) + name[4];
+ s = (s<<7) + (s>>1) + name[5]; s = (s<<7) + (s>>1) + name[6];
+ s = (s<<7) + (s>>1) + name[7]; s = (s<<7) + (s>>1) + name[8];
+ s = (s<<7) + (s>>1) + name[9]; s = (s<<7) + (s>>1) + name[10];
+ return s;
+}
+
+static inline sector_t fat_clus_to_blknr(struct msdos_sb_info *sbi, int clus)
+{
+ return ((sector_t)clus - FAT_START_ENT) * sbi->sec_per_clus
+ + sbi->data_start;
+}
+
+static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len)
+{
+#ifdef __BIG_ENDIAN
+ while (len--) {
+ *dst++ = src[0] | (src[1] << 8);
+ src += 2;
+ }
+#else
+ memcpy(dst, src, len * 2);
+#endif
+}
+
+static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len)
+{
+#ifdef __BIG_ENDIAN
+ while (len--) {
+ dst[0] = *src & 0x00FF;
+ dst[1] = (*src & 0xFF00) >> 8;
+ dst += 2;
+ src++;
+ }
+#else
+ memcpy(dst, src, len * 2);
+#endif
+}
+
+/* fat/cache.c */
+extern void fat_cache_inval_inode(struct inode *inode);
+extern int fat_get_cluster(struct inode *inode, int cluster,
+ int *fclus, int *dclus);
+extern int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
+ unsigned long *mapped_blocks, int create);
+
+/* fat/dir.c */
+extern const struct file_operations fat_dir_operations;
+extern int fat_search_long(struct inode *inode, const unsigned char *name,
+ int name_len, struct fat_slot_info *sinfo);
+extern int fat_dir_empty(struct inode *dir);
+extern int fat_subdirs(struct inode *dir);
+extern int fat_scan(struct inode *dir, const unsigned char *name,
+ struct fat_slot_info *sinfo);
+extern int fat_get_dotdot_entry(struct inode *dir, struct buffer_head **bh,
+ struct msdos_dir_entry **de, loff_t *i_pos);
+extern int fat_alloc_new_dir(struct inode *dir, struct timespec *ts);
+extern int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
+ struct fat_slot_info *sinfo);
+extern int fat_remove_entries(struct inode *dir, struct fat_slot_info *sinfo);
+
+/* fat/fatent.c */
+struct fat_entry {
+ int entry;
+ union {
+ u8 *ent12_p[2];
+ __le16 *ent16_p;
+ __le32 *ent32_p;
+ } u;
+ int nr_bhs;
+ struct buffer_head *bhs[2];
+};
+
+static inline void fatent_init(struct fat_entry *fatent)
+{
+ fatent->nr_bhs = 0;
+ fatent->entry = 0;
+ fatent->u.ent32_p = NULL;
+ fatent->bhs[0] = fatent->bhs[1] = NULL;
+}
+
+static inline void fatent_set_entry(struct fat_entry *fatent, int entry)
+{
+ fatent->entry = entry;
+ fatent->u.ent32_p = NULL;
+}
+
+static inline void fatent_brelse(struct fat_entry *fatent)
+{
+ int i;
+ fatent->u.ent32_p = NULL;
+ for (i = 0; i < fatent->nr_bhs; i++)
+ brelse(fatent->bhs[i]);
+ fatent->nr_bhs = 0;
+ fatent->bhs[0] = fatent->bhs[1] = NULL;
+}
+
+extern void fat_ent_access_init(struct super_block *sb);
+extern int fat_ent_read(struct inode *inode, struct fat_entry *fatent,
+ int entry);
+extern int fat_ent_write(struct inode *inode, struct fat_entry *fatent,
+ int new, int wait);
+extern int fat_alloc_clusters(struct inode *inode, int *cluster,
+ int nr_cluster);
+extern int fat_free_clusters(struct inode *inode, int cluster);
+extern int fat_count_free_clusters(struct super_block *sb);
+
+/* fat/file.c */
+extern int fat_generic_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern const struct file_operations fat_file_operations;
+extern const struct inode_operations fat_file_inode_operations;
+extern int fat_setattr(struct dentry * dentry, struct iattr * attr);
+extern void fat_truncate(struct inode *inode);
+extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry,
+ struct kstat *stat);
+
+/* fat/inode.c */
+extern void fat_attach(struct inode *inode, loff_t i_pos);
+extern void fat_detach(struct inode *inode);
+extern struct inode *fat_iget(struct super_block *sb, loff_t i_pos);
+extern struct inode *fat_build_inode(struct super_block *sb,
+ struct msdos_dir_entry *de, loff_t i_pos);
+extern int fat_sync_inode(struct inode *inode);
+extern int fat_fill_super(struct super_block *sb, void *data, int silent,
+ const struct inode_operations *fs_dir_inode_ops, int isvfat);
+
+extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
+ struct inode *i2);
+/* fat/misc.c */
+extern void fat_fs_panic(struct super_block *s, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3))) __cold;
+extern void fat_clusters_flush(struct super_block *sb);
+extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
+extern void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts,
+ __le16 __time, __le16 __date, u8 time_cs);
+extern void fat_time_unix2fat(struct msdos_sb_info *sbi, struct timespec *ts,
+ __le16 *time, __le16 *date, u8 *time_cs);
+extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs);
+
+int fat_cache_init(void);
+void fat_cache_destroy(void);
+
+/* helper for printk */
+typedef unsigned long long llu;
+
+#endif /* !_FAT_H */
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index fb98b3d847e..da6eea47872 100644
--- a/fs/fat/fatent.c
+++ b/fs/fat/fatent.c
@@ -7,6 +7,7 @@
#include <linux/fs.h>
#include <linux/msdos_fs.h>
#include <linux/blkdev.h>
+#include "fat.h"
struct fatent_operations {
void (*ent_blocknr)(struct super_block *, int, int *, sector_t *);
@@ -92,8 +93,7 @@ static int fat12_ent_bread(struct super_block *sb, struct fat_entry *fatent,
err_brelse:
brelse(bhs[0]);
err:
- printk(KERN_ERR "FAT: FAT read failed (blocknr %llu)\n",
- (unsigned long long)blocknr);
+ printk(KERN_ERR "FAT: FAT read failed (blocknr %llu)\n", (llu)blocknr);
return -EIO;
}
@@ -106,7 +106,7 @@ static int fat_ent_bread(struct super_block *sb, struct fat_entry *fatent,
fatent->bhs[0] = sb_bread(sb, blocknr);
if (!fatent->bhs[0]) {
printk(KERN_ERR "FAT: FAT read failed (blocknr %llu)\n",
- (unsigned long long)blocknr);
+ (llu)blocknr);
return -EIO;
}
fatent->nr_bhs = 1;
@@ -316,10 +316,20 @@ static inline int fat_ent_update_ptr(struct super_block *sb,
/* Is this fatent's blocks including this entry? */
if (!fatent->nr_bhs || bhs[0]->b_blocknr != blocknr)
return 0;
- /* Does this entry need the next block? */
- if (sbi->fat_bits == 12 && (offset + 1) >= sb->s_blocksize) {
- if (fatent->nr_bhs != 2 || bhs[1]->b_blocknr != (blocknr + 1))
- return 0;
+ if (sbi->fat_bits == 12) {
+ if ((offset + 1) < sb->s_blocksize) {
+ /* This entry is on bhs[0]. */
+ if (fatent->nr_bhs == 2) {
+ brelse(bhs[1]);
+ fatent->nr_bhs = 1;
+ }
+ } else {
+ /* This entry needs the next block. */
+ if (fatent->nr_bhs != 2)
+ return 0;
+ if (bhs[1]->b_blocknr != (blocknr + 1))
+ return 0;
+ }
}
ops->ent_set_ptr(fatent, offset);
return 1;
diff --git a/fs/fat/file.c b/fs/fat/file.c
index ddde37025ca..f06a4e525ec 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -10,13 +10,13 @@
#include <linux/module.h>
#include <linux/mount.h>
#include <linux/time.h>
-#include <linux/msdos_fs.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include <linux/blkdev.h>
#include <linux/fsnotify.h>
#include <linux/security.h>
+#include "fat.h"
int fat_generic_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
@@ -29,10 +29,9 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
{
u32 attr;
- if (inode->i_ino == MSDOS_ROOT_INO)
- attr = ATTR_DIR;
- else
- attr = fat_attr(inode);
+ mutex_lock(&inode->i_mutex);
+ attr = fat_make_attrs(inode);
+ mutex_unlock(&inode->i_mutex);
return put_user(attr, user_attr);
}
@@ -62,20 +61,16 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
/* Merge in ATTR_VOLUME and ATTR_DIR */
attr |= (MSDOS_I(inode)->i_attrs & ATTR_VOLUME) |
(is_dir ? ATTR_DIR : 0);
- oldattr = fat_attr(inode);
+ oldattr = fat_make_attrs(inode);
/* Equivalent to a chmod() */
ia.ia_valid = ATTR_MODE | ATTR_CTIME;
ia.ia_ctime = current_fs_time(inode->i_sb);
- if (is_dir) {
- ia.ia_mode = MSDOS_MKMODE(attr,
- S_IRWXUGO & ~sbi->options.fs_dmask)
- | S_IFDIR;
- } else {
- ia.ia_mode = MSDOS_MKMODE(attr,
- (S_IRUGO | S_IWUGO | (inode->i_mode & S_IXUGO))
- & ~sbi->options.fs_fmask)
- | S_IFREG;
+ if (is_dir)
+ ia.ia_mode = fat_make_mode(sbi, attr, S_IRWXUGO);
+ else {
+ ia.ia_mode = fat_make_mode(sbi, attr,
+ S_IRUGO | S_IWUGO | (inode->i_mode & S_IXUGO));
}
/* The root directory has no attributes */
@@ -115,7 +110,7 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
inode->i_flags &= S_IMMUTABLE;
}
- MSDOS_I(inode)->i_attrs = attr & ATTR_UNUSED;
+ fat_save_attrs(inode, attr);
mark_inode_dirty(inode);
up:
mnt_drop_write(filp->f_path.mnt);
@@ -274,7 +269,7 @@ static int fat_sanitize_mode(const struct msdos_sb_info *sbi,
/*
* Note, the basic check is already done by a caller of
- * (attr->ia_mode & ~MSDOS_VALID_MODE)
+ * (attr->ia_mode & ~FAT_VALID_MODE)
*/
if (S_ISREG(inode->i_mode))
@@ -287,11 +282,18 @@ static int fat_sanitize_mode(const struct msdos_sb_info *sbi,
/*
* Of the r and x bits, all (subject to umask) must be present. Of the
* w bits, either all (subject to umask) or none must be present.
+ *
+ * If fat_mode_can_hold_ro(inode) is false, can't change w bits.
*/
if ((perm & (S_IRUGO | S_IXUGO)) != (inode->i_mode & (S_IRUGO|S_IXUGO)))
return -EPERM;
- if ((perm & S_IWUGO) && ((perm & S_IWUGO) != (S_IWUGO & ~mask)))
- return -EPERM;
+ if (fat_mode_can_hold_ro(inode)) {
+ if ((perm & S_IWUGO) && ((perm & S_IWUGO) != (S_IWUGO & ~mask)))
+ return -EPERM;
+ } else {
+ if ((perm & S_IWUGO) != (S_IWUGO & ~mask))
+ return -EPERM;
+ }
*mode_ptr &= S_IFMT | perm;
@@ -314,13 +316,15 @@ static int fat_allow_set_time(struct msdos_sb_info *sbi, struct inode *inode)
}
#define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
+/* valid file mode bits */
+#define FAT_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXUGO)
int fat_setattr(struct dentry *dentry, struct iattr *attr)
{
struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
struct inode *inode = dentry->d_inode;
- int error = 0;
unsigned int ia_valid;
+ int error;
/*
* Expand the file. Since inode_setattr() updates ->i_size
@@ -356,7 +360,7 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
((attr->ia_valid & ATTR_GID) &&
(attr->ia_gid != sbi->options.fs_gid)) ||
((attr->ia_valid & ATTR_MODE) &&
- (attr->ia_mode & ~MSDOS_VALID_MODE)))
+ (attr->ia_mode & ~FAT_VALID_MODE)))
error = -EPERM;
if (error) {
@@ -374,7 +378,8 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
attr->ia_valid &= ~ATTR_MODE;
}
- error = inode_setattr(inode, attr);
+ if (attr->ia_valid)
+ error = inode_setattr(inode, attr);
out:
return error;
}
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 19eafbe3c37..bdd8fb7be2c 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -16,7 +16,6 @@
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/seq_file.h>
-#include <linux/msdos_fs.h>
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/buffer_head.h>
@@ -27,7 +26,9 @@
#include <linux/uio.h>
#include <linux/writeback.h>
#include <linux/log2.h>
+#include <linux/hash.h>
#include <asm/unaligned.h>
+#include "fat.h"
#ifndef CONFIG_FAT_DEFAULT_IOCHARSET
/* if user don't select VFAT, this is undefined. */
@@ -63,7 +64,7 @@ static inline int __fat_get_block(struct inode *inode, sector_t iblock,
sector_t phys;
int err, offset;
- err = fat_bmap(inode, iblock, &phys, &mapped_blocks);
+ err = fat_bmap(inode, iblock, &phys, &mapped_blocks, create);
if (err)
return err;
if (phys) {
@@ -93,7 +94,7 @@ static inline int __fat_get_block(struct inode *inode, sector_t iblock,
*max_blocks = min(mapped_blocks, *max_blocks);
MSDOS_I(inode)->mmu_private += *max_blocks << sb->s_blocksize_bits;
- err = fat_bmap(inode, iblock, &phys, &mapped_blocks);
+ err = fat_bmap(inode, iblock, &phys, &mapped_blocks, create);
if (err)
return err;
@@ -175,7 +176,7 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
if (rw == WRITE) {
/*
- * FIXME: blockdev_direct_IO() doesn't use ->prepare_write(),
+ * FIXME: blockdev_direct_IO() doesn't use ->write_begin(),
* so we need to update the ->mmu_private to block boundary.
*
* But we must fill the remaining area or hole by nul for
@@ -198,7 +199,14 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
static sector_t _fat_bmap(struct address_space *mapping, sector_t block)
{
- return generic_block_bmap(mapping, block, fat_get_block);
+ sector_t blocknr;
+
+ /* fat_get_cluster() assumes the requested blocknr isn't truncated. */
+ mutex_lock(&mapping->host->i_mutex);
+ blocknr = generic_block_bmap(mapping, block, fat_get_block);
+ mutex_unlock(&mapping->host->i_mutex);
+
+ return blocknr;
}
static const struct address_space_operations fat_aops = {
@@ -247,25 +255,21 @@ static void fat_hash_init(struct super_block *sb)
INIT_HLIST_HEAD(&sbi->inode_hashtable[i]);
}
-static inline unsigned long fat_hash(struct super_block *sb, loff_t i_pos)
+static inline unsigned long fat_hash(loff_t i_pos)
{
- unsigned long tmp = (unsigned long)i_pos | (unsigned long) sb;
- tmp = tmp + (tmp >> FAT_HASH_BITS) + (tmp >> FAT_HASH_BITS * 2);
- return tmp & FAT_HASH_MASK;
+ return hash_32(i_pos, FAT_HASH_BITS);
}
void fat_attach(struct inode *inode, loff_t i_pos)
{
- struct super_block *sb = inode->i_sb;
- struct msdos_sb_info *sbi = MSDOS_SB(sb);
+ struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
+ struct hlist_head *head = sbi->inode_hashtable + fat_hash(i_pos);
spin_lock(&sbi->inode_hash_lock);
MSDOS_I(inode)->i_pos = i_pos;
- hlist_add_head(&MSDOS_I(inode)->i_fat_hash,
- sbi->inode_hashtable + fat_hash(sb, i_pos));
+ hlist_add_head(&MSDOS_I(inode)->i_fat_hash, head);
spin_unlock(&sbi->inode_hash_lock);
}
-
EXPORT_SYMBOL_GPL(fat_attach);
void fat_detach(struct inode *inode)
@@ -276,13 +280,12 @@ void fat_detach(struct inode *inode)
hlist_del_init(&MSDOS_I(inode)->i_fat_hash);
spin_unlock(&sbi->inode_hash_lock);
}
-
EXPORT_SYMBOL_GPL(fat_detach);
struct inode *fat_iget(struct super_block *sb, loff_t i_pos)
{
struct msdos_sb_info *sbi = MSDOS_SB(sb);
- struct hlist_head *head = sbi->inode_hashtable + fat_hash(sb, i_pos);
+ struct hlist_head *head = sbi->inode_hashtable + fat_hash(i_pos);
struct hlist_node *_p;
struct msdos_inode_info *i;
struct inode *inode = NULL;
@@ -341,8 +344,7 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
if ((de->attr & ATTR_DIR) && !IS_FREE(de->name)) {
inode->i_generation &= ~1;
- inode->i_mode = MSDOS_MKMODE(de->attr,
- S_IRWXUGO & ~sbi->options.fs_dmask) | S_IFDIR;
+ inode->i_mode = fat_make_mode(sbi, de->attr, S_IRWXUGO);
inode->i_op = sbi->dir_ops;
inode->i_fop = &fat_dir_operations;
@@ -359,10 +361,9 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
inode->i_nlink = fat_subdirs(inode);
} else { /* not a directory */
inode->i_generation |= 1;
- inode->i_mode = MSDOS_MKMODE(de->attr,
- ((sbi->options.showexec && !is_exec(de->name + 8))
- ? S_IRUGO|S_IWUGO : S_IRWXUGO)
- & ~sbi->options.fs_fmask) | S_IFREG;
+ inode->i_mode = fat_make_mode(sbi, de->attr,
+ ((sbi->options.showexec && !is_exec(de->name + 8))
+ ? S_IRUGO|S_IWUGO : S_IRWXUGO));
MSDOS_I(inode)->i_start = le16_to_cpu(de->start);
if (sbi->fat_bits == 32)
MSDOS_I(inode)->i_start |= (le16_to_cpu(de->starthi) << 16);
@@ -378,25 +379,16 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
if (sbi->options.sys_immutable)
inode->i_flags |= S_IMMUTABLE;
}
- MSDOS_I(inode)->i_attrs = de->attr & ATTR_UNUSED;
+ fat_save_attrs(inode, de->attr);
+
inode->i_blocks = ((inode->i_size + (sbi->cluster_size - 1))
& ~((loff_t)sbi->cluster_size - 1)) >> 9;
- inode->i_mtime.tv_sec =
- date_dos2unix(le16_to_cpu(de->time), le16_to_cpu(de->date),
- sbi->options.tz_utc);
- inode->i_mtime.tv_nsec = 0;
+
+ fat_time_fat2unix(sbi, &inode->i_mtime, de->time, de->date, 0);
if (sbi->options.isvfat) {
- int secs = de->ctime_cs / 100;
- int csecs = de->ctime_cs % 100;
- inode->i_ctime.tv_sec =
- date_dos2unix(le16_to_cpu(de->ctime),
- le16_to_cpu(de->cdate),
- sbi->options.tz_utc) + secs;
- inode->i_ctime.tv_nsec = csecs * 10000000;
- inode->i_atime.tv_sec =
- date_dos2unix(0, le16_to_cpu(de->adate),
- sbi->options.tz_utc);
- inode->i_atime.tv_nsec = 0;
+ fat_time_fat2unix(sbi, &inode->i_ctime, de->ctime,
+ de->cdate, de->ctime_cs);
+ fat_time_fat2unix(sbi, &inode->i_atime, 0, de->adate, 0);
} else
inode->i_ctime = inode->i_atime = inode->i_mtime;
@@ -443,13 +435,8 @@ static void fat_delete_inode(struct inode *inode)
static void fat_clear_inode(struct inode *inode)
{
- struct super_block *sb = inode->i_sb;
- struct msdos_sb_info *sbi = MSDOS_SB(sb);
-
- spin_lock(&sbi->inode_hash_lock);
fat_cache_inval_inode(inode);
- hlist_del_init(&MSDOS_I(inode)->i_fat_hash);
- spin_unlock(&sbi->inode_hash_lock);
+ fat_detach(inode);
}
static void fat_write_super(struct super_block *sb)
@@ -555,6 +542,20 @@ static int fat_statfs(struct dentry *dentry, struct kstatfs *buf)
return 0;
}
+static inline loff_t fat_i_pos_read(struct msdos_sb_info *sbi,
+ struct inode *inode)
+{
+ loff_t i_pos;
+#if BITS_PER_LONG == 32
+ spin_lock(&sbi->inode_hash_lock);
+#endif
+ i_pos = MSDOS_I(inode)->i_pos;
+#if BITS_PER_LONG == 32
+ spin_unlock(&sbi->inode_hash_lock);
+#endif
+ return i_pos;
+}
+
static int fat_write_inode(struct inode *inode, int wait)
{
struct super_block *sb = inode->i_sb;
@@ -564,9 +565,12 @@ static int fat_write_inode(struct inode *inode, int wait)
loff_t i_pos;
int err;
+ if (inode->i_ino == MSDOS_ROOT_INO)
+ return 0;
+
retry:
- i_pos = MSDOS_I(inode)->i_pos;
- if (inode->i_ino == MSDOS_ROOT_INO || !i_pos)
+ i_pos = fat_i_pos_read(sbi, inode);
+ if (!i_pos)
return 0;
bh = sb_bread(sb, i_pos >> sbi->dir_per_block_bits);
@@ -588,19 +592,17 @@ retry:
raw_entry->size = 0;
else
raw_entry->size = cpu_to_le32(inode->i_size);
- raw_entry->attr = fat_attr(inode);
+ raw_entry->attr = fat_make_attrs(inode);
raw_entry->start = cpu_to_le16(MSDOS_I(inode)->i_logstart);
raw_entry->starthi = cpu_to_le16(MSDOS_I(inode)->i_logstart >> 16);
- fat_date_unix2dos(inode->i_mtime.tv_sec, &raw_entry->time,
- &raw_entry->date, sbi->options.tz_utc);
+ fat_time_unix2fat(sbi, &inode->i_mtime, &raw_entry->time,
+ &raw_entry->date, NULL);
if (sbi->options.isvfat) {
__le16 atime;
- fat_date_unix2dos(inode->i_ctime.tv_sec, &raw_entry->ctime,
- &raw_entry->cdate, sbi->options.tz_utc);
- fat_date_unix2dos(inode->i_atime.tv_sec, &atime,
- &raw_entry->adate, sbi->options.tz_utc);
- raw_entry->ctime_cs = (inode->i_ctime.tv_sec & 1) * 100 +
- inode->i_ctime.tv_nsec / 10000000;
+ fat_time_unix2fat(sbi, &inode->i_ctime, &raw_entry->ctime,
+ &raw_entry->cdate, &raw_entry->ctime_cs);
+ fat_time_unix2fat(sbi, &inode->i_atime, &atime,
+ &raw_entry->adate, NULL);
}
spin_unlock(&sbi->inode_hash_lock);
mark_buffer_dirty(bh);
@@ -819,8 +821,10 @@ static int fat_show_options(struct seq_file *m, struct vfsmount *mnt)
seq_puts(m, ",uni_xlate");
if (!opts->numtail)
seq_puts(m, ",nonumtail");
+ if (opts->rodir)
+ seq_puts(m, ",rodir");
}
- if (sbi->options.flush)
+ if (opts->flush)
seq_puts(m, ",flush");
if (opts->tz_utc)
seq_puts(m, ",tz=UTC");
@@ -836,7 +840,7 @@ enum {
Opt_charset, Opt_shortname_lower, Opt_shortname_win95,
Opt_shortname_winnt, Opt_shortname_mixed, Opt_utf8_no, Opt_utf8_yes,
Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes,
- Opt_obsolate, Opt_flush, Opt_tz_utc, Opt_err,
+ Opt_obsolate, Opt_flush, Opt_tz_utc, Opt_rodir, Opt_err,
};
static const match_table_t fat_tokens = {
@@ -908,6 +912,7 @@ static const match_table_t vfat_tokens = {
{Opt_nonumtail_yes, "nonumtail=yes"},
{Opt_nonumtail_yes, "nonumtail=true"},
{Opt_nonumtail_yes, "nonumtail"},
+ {Opt_rodir, "rodir"},
{Opt_err, NULL}
};
@@ -927,10 +932,13 @@ static int parse_options(char *options, int is_vfat, int silent, int *debug,
opts->allow_utime = -1;
opts->codepage = fat_default_codepage;
opts->iocharset = fat_default_iocharset;
- if (is_vfat)
+ if (is_vfat) {
opts->shortname = VFAT_SFN_DISPLAY_LOWER|VFAT_SFN_CREATE_WIN95;
- else
+ opts->rodir = 0;
+ } else {
opts->shortname = 0;
+ opts->rodir = 1;
+ }
opts->name_check = 'n';
opts->quiet = opts->showexec = opts->sys_immutable = opts->dotsOK = 0;
opts->utf8 = opts->unicode_xlate = 0;
@@ -1081,6 +1089,9 @@ static int parse_options(char *options, int is_vfat, int silent, int *debug,
case Opt_nonumtail_yes: /* empty or 1 or yes or true */
opts->numtail = 0; /* negated option */
break;
+ case Opt_rodir:
+ opts->rodir = 1;
+ break;
/* obsolete mount options */
case Opt_obsolate:
@@ -1126,7 +1137,7 @@ static int fat_read_root(struct inode *inode)
inode->i_gid = sbi->options.fs_gid;
inode->i_version++;
inode->i_generation = 0;
- inode->i_mode = (S_IRWXUGO & ~sbi->options.fs_dmask) | S_IFDIR;
+ inode->i_mode = fat_make_mode(sbi, ATTR_DIR, S_IRWXUGO);
inode->i_op = sbi->dir_ops;
inode->i_fop = &fat_dir_operations;
if (sbi->fat_bits == 32) {
@@ -1143,7 +1154,7 @@ static int fat_read_root(struct inode *inode)
MSDOS_I(inode)->i_logstart = 0;
MSDOS_I(inode)->mmu_private = inode->i_size;
- MSDOS_I(inode)->i_attrs = ATTR_NONE;
+ fat_save_attrs(inode, ATTR_DIR);
inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = 0;
inode->i_mtime.tv_nsec = inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec = 0;
inode->i_nlink = fat_subdirs(inode)+2;
diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index 79fb98ad36d..ac39ebcc149 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -8,8 +8,8 @@
#include <linux/module.h>
#include <linux/fs.h>
-#include <linux/msdos_fs.h>
#include <linux/buffer_head.h>
+#include "fat.h"
/*
* fat_fs_panic reports a severe file system problem and sets the file system
@@ -124,8 +124,9 @@ int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster)
mark_inode_dirty(inode);
}
if (new_fclus != (inode->i_blocks >> (sbi->cluster_bits - 9))) {
- fat_fs_panic(sb, "clusters badly computed (%d != %lu)",
- new_fclus, inode->i_blocks >> (sbi->cluster_bits - 9));
+ fat_fs_panic(sb, "clusters badly computed (%d != %llu)",
+ new_fclus,
+ (llu)(inode->i_blocks >> (sbi->cluster_bits - 9)));
fat_cache_inval_inode(inode);
}
inode->i_blocks += nr_cluster << (sbi->cluster_bits - 9);
@@ -135,65 +136,131 @@ int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster)
extern struct timezone sys_tz;
+/*
+ * The epoch of FAT timestamp is 1980.
+ * : bits : value
+ * date: 0 - 4: day (1 - 31)
+ * date: 5 - 8: month (1 - 12)
+ * date: 9 - 15: year (0 - 127) from 1980
+ * time: 0 - 4: sec (0 - 29) 2sec counts
+ * time: 5 - 10: min (0 - 59)
+ * time: 11 - 15: hour (0 - 23)
+ */
+#define SECS_PER_MIN 60
+#define SECS_PER_HOUR (60 * 60)
+#define SECS_PER_DAY (SECS_PER_HOUR * 24)
+#define UNIX_SECS_1980 315532800L
+#if BITS_PER_LONG == 64
+#define UNIX_SECS_2108 4354819200L
+#endif
+/* days between 1.1.70 and 1.1.80 (2 leap days) */
+#define DAYS_DELTA (365 * 10 + 2)
+/* 120 (2100 - 1980) isn't leap year */
+#define YEAR_2100 120
+#define IS_LEAP_YEAR(y) (!((y) & 3) && (y) != YEAR_2100)
+
/* Linear day numbers of the respective 1sts in non-leap years. */
-static int day_n[] = {
- /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */
- 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0
+static time_t days_in_year[] = {
+ /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */
+ 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0,
};
-/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
-int date_dos2unix(unsigned short time, unsigned short date, int tz_utc)
+/* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */
+void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts,
+ __le16 __time, __le16 __date, u8 time_cs)
{
- int month, year, secs;
+ u16 time = le16_to_cpu(__time), date = le16_to_cpu(__date);
+ time_t second, day, leap_day, month, year;
- /*
- * first subtract and mask after that... Otherwise, if
- * date == 0, bad things happen
- */
- month = ((date >> 5) - 1) & 15;
- year = date >> 9;
- secs = (time & 31)*2+60*((time >> 5) & 63)+(time >> 11)*3600+86400*
- ((date & 31)-1+day_n[month]+(year/4)+year*365-((year & 3) == 0 &&
- month < 2 ? 1 : 0)+3653);
- /* days since 1.1.70 plus 80's leap day */
- if (!tz_utc)
- secs += sys_tz.tz_minuteswest*60;
- return secs;
+ year = date >> 9;
+ month = max(1, (date >> 5) & 0xf);
+ day = max(1, date & 0x1f) - 1;
+
+ leap_day = (year + 3) / 4;
+ if (year > YEAR_2100) /* 2100 isn't leap year */
+ leap_day--;
+ if (IS_LEAP_YEAR(year) && month > 2)
+ leap_day++;
+
+ second = (time & 0x1f) << 1;
+ second += ((time >> 5) & 0x3f) * SECS_PER_MIN;
+ second += (time >> 11) * SECS_PER_HOUR;
+ second += (year * 365 + leap_day
+ + days_in_year[month] + day
+ + DAYS_DELTA) * SECS_PER_DAY;
+
+ if (!sbi->options.tz_utc)
+ second += sys_tz.tz_minuteswest * SECS_PER_MIN;
+
+ if (time_cs) {
+ ts->tv_sec = second + (time_cs / 100);
+ ts->tv_nsec = (time_cs % 100) * 10000000;
+ } else {
+ ts->tv_sec = second;
+ ts->tv_nsec = 0;
+ }
}
-/* Convert linear UNIX date to a MS-DOS time/date pair. */
-void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date, int tz_utc)
+/* Convert linear UNIX date to a FAT time/date pair. */
+void fat_time_unix2fat(struct msdos_sb_info *sbi, struct timespec *ts,
+ __le16 *time, __le16 *date, u8 *time_cs)
{
- int day, year, nl_day, month;
+ time_t second = ts->tv_sec;
+ time_t day, leap_day, month, year;
- if (!tz_utc)
- unix_date -= sys_tz.tz_minuteswest*60;
+ if (!sbi->options.tz_utc)
+ second -= sys_tz.tz_minuteswest * SECS_PER_MIN;
/* Jan 1 GMT 00:00:00 1980. But what about another time zone? */
- if (unix_date < 315532800)
- unix_date = 315532800;
-
- *time = cpu_to_le16((unix_date % 60)/2+(((unix_date/60) % 60) << 5)+
- (((unix_date/3600) % 24) << 11));
- day = unix_date/86400-3652;
- year = day/365;
- if ((year+3)/4+365*year > day)
+ if (second < UNIX_SECS_1980) {
+ *time = 0;
+ *date = cpu_to_le16((0 << 9) | (1 << 5) | 1);
+ if (time_cs)
+ *time_cs = 0;
+ return;
+ }
+#if BITS_PER_LONG == 64
+ if (second >= UNIX_SECS_2108) {
+ *time = cpu_to_le16((23 << 11) | (59 << 5) | 29);
+ *date = cpu_to_le16((127 << 9) | (12 << 5) | 31);
+ if (time_cs)
+ *time_cs = 199;
+ return;
+ }
+#endif
+
+ day = second / SECS_PER_DAY - DAYS_DELTA;
+ year = day / 365;
+ leap_day = (year + 3) / 4;
+ if (year > YEAR_2100) /* 2100 isn't leap year */
+ leap_day--;
+ if (year * 365 + leap_day > day)
year--;
- day -= (year+3)/4+365*year;
- if (day == 59 && !(year & 3)) {
- nl_day = day;
+ leap_day = (year + 3) / 4;
+ if (year > YEAR_2100) /* 2100 isn't leap year */
+ leap_day--;
+ day -= year * 365 + leap_day;
+
+ if (IS_LEAP_YEAR(year) && day == days_in_year[3]) {
month = 2;
} else {
- nl_day = (year & 3) || day <= 59 ? day : day-1;
- for (month = 0; month < 12; month++) {
- if (day_n[month] > nl_day)
+ if (IS_LEAP_YEAR(year) && day > days_in_year[3])
+ day--;
+ for (month = 1; month < 12; month++) {
+ if (days_in_year[month + 1] > day)
break;
}
}
- *date = cpu_to_le16(nl_day-day_n[month-1]+1+(month << 5)+(year << 9));
-}
+ day -= days_in_year[month];
-EXPORT_SYMBOL_GPL(fat_date_unix2dos);
+ *time = cpu_to_le16(((second / SECS_PER_HOUR) % 24) << 11
+ | ((second / SECS_PER_MIN) % 60) << 5
+ | (second % SECS_PER_MIN) >> 1);
+ *date = cpu_to_le16((year << 9) | (month << 5) | (day + 1));
+ if (time_cs)
+ *time_cs = (ts->tv_sec & 1) * 100 + ts->tv_nsec / 10000000;
+}
+EXPORT_SYMBOL_GPL(fat_time_unix2fat);
int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs)
{
diff --git a/fs/msdos/namei.c b/fs/fat/namei_msdos.c
index e844b9809d2..7ba03a4acbe 100644
--- a/fs/msdos/namei.c
+++ b/fs/fat/namei_msdos.c
@@ -9,8 +9,8 @@
#include <linux/module.h>
#include <linux/time.h>
#include <linux/buffer_head.h>
-#include <linux/msdos_fs.h>
#include <linux/smp_lock.h>
+#include "fat.h"
/* Characters that are undesirable in an MS-DOS file name */
static unsigned char bad_chars[] = "*?<>|\"";
@@ -203,33 +203,37 @@ static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
{
struct super_block *sb = dir->i_sb;
struct fat_slot_info sinfo;
- struct inode *inode = NULL;
- int res;
-
- dentry->d_op = &msdos_dentry_operations;
+ struct inode *inode;
+ int err;
lock_super(sb);
- res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
- if (res == -ENOENT)
- goto add;
- if (res < 0)
- goto out;
+
+ err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
+ if (err) {
+ if (err == -ENOENT) {
+ inode = NULL;
+ goto out;
+ }
+ goto error;
+ }
+
inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
brelse(sinfo.bh);
if (IS_ERR(inode)) {
- res = PTR_ERR(inode);
- goto out;
+ err = PTR_ERR(inode);
+ goto error;
}
-add:
- res = 0;
+out:
+ unlock_super(sb);
+ dentry->d_op = &msdos_dentry_operations;
dentry = d_splice_alias(inode, dentry);
if (dentry)
dentry->d_op = &msdos_dentry_operations;
-out:
+ return dentry;
+
+error:
unlock_super(sb);
- if (!res)
- return dentry;
- return ERR_PTR(res);
+ return ERR_PTR(err);
}
/***** Creates a directory entry (name is already formatted). */
@@ -247,7 +251,7 @@ static int msdos_add_entry(struct inode *dir, const unsigned char *name,
if (is_hid)
de.attr |= ATTR_HIDDEN;
de.lcase = 0;
- fat_date_unix2dos(ts->tv_sec, &time, &date, sbi->options.tz_utc);
+ fat_time_unix2fat(sbi, ts, &time, &date, NULL);
de.cdate = de.adate = 0;
de.ctime = 0;
de.ctime_cs = 0;
diff --git a/fs/vfat/namei.c b/fs/fat/namei_vfat.c
index 155c10b4adb..bf326d4356a 100644
--- a/fs/vfat/namei.c
+++ b/fs/fat/namei_vfat.c
@@ -16,36 +16,75 @@
*/
#include <linux/module.h>
-
#include <linux/jiffies.h>
-#include <linux/msdos_fs.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/namei.h>
+#include "fat.h"
-static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
+/*
+ * If new entry was created in the parent, it could create the 8.3
+ * alias (the shortname of logname). So, the parent may have the
+ * negative-dentry which matches the created 8.3 alias.
+ *
+ * If it happened, the negative dentry isn't actually negative
+ * anymore. So, drop it.
+ */
+static int vfat_revalidate_shortname(struct dentry *dentry)
{
int ret = 1;
-
- if (!dentry->d_inode &&
- nd && !(nd->flags & LOOKUP_CONTINUE) && (nd->flags & LOOKUP_CREATE))
- /*
- * negative dentry is dropped, in order to make sure
- * to use the name which a user desires if this is
- * create path.
- */
+ spin_lock(&dentry->d_lock);
+ if (dentry->d_time != dentry->d_parent->d_inode->i_version)
ret = 0;
- else {
- spin_lock(&dentry->d_lock);
- if (dentry->d_time != dentry->d_parent->d_inode->i_version)
- ret = 0;
- spin_unlock(&dentry->d_lock);
- }
+ spin_unlock(&dentry->d_lock);
return ret;
}
+static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
+{
+ /* This is not negative dentry. Always valid. */
+ if (dentry->d_inode)
+ return 1;
+ return vfat_revalidate_shortname(dentry);
+}
+
+static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
+{
+ /*
+ * This is not negative dentry. Always valid.
+ *
+ * Note, rename() to existing directory entry will have ->d_inode,
+ * and will use existing name which isn't specified name by user.
+ *
+ * We may be able to drop this positive dentry here. But dropping
+ * positive dentry isn't good idea. So it's unsupported like
+ * rename("filename", "FILENAME") for now.
+ */
+ if (dentry->d_inode)
+ return 1;
+
+ /*
+ * This may be nfsd (or something), anyway, we can't see the
+ * intent of this. So, since this can be for creation, drop it.
+ */
+ if (!nd)
+ return 0;
+
+ /*
+ * Drop the negative dentry, in order to make sure to use the
+ * case sensitive name which is specified by user if this is
+ * for creation.
+ */
+ if (!(nd->flags & (LOOKUP_CONTINUE | LOOKUP_PARENT))) {
+ if (nd->flags & LOOKUP_CREATE)
+ return 0;
+ }
+
+ return vfat_revalidate_shortname(dentry);
+}
+
/* returns the length of a struct qstr, ignoring trailing dots */
static unsigned int vfat_striptail_len(struct qstr *qstr)
{
@@ -127,25 +166,16 @@ static int vfat_cmp(struct dentry *dentry, struct qstr *a, struct qstr *b)
return 1;
}
-static struct dentry_operations vfat_dentry_ops[4] = {
- {
- .d_hash = vfat_hashi,
- .d_compare = vfat_cmpi,
- },
- {
- .d_revalidate = vfat_revalidate,
- .d_hash = vfat_hashi,
- .d_compare = vfat_cmpi,
- },
- {
- .d_hash = vfat_hash,
- .d_compare = vfat_cmp,
- },
- {
- .d_revalidate = vfat_revalidate,
- .d_hash = vfat_hash,
- .d_compare = vfat_cmp,
- }
+static struct dentry_operations vfat_ci_dentry_ops = {
+ .d_revalidate = vfat_revalidate_ci,
+ .d_hash = vfat_hashi,
+ .d_compare = vfat_cmpi,
+};
+
+static struct dentry_operations vfat_dentry_ops = {
+ .d_revalidate = vfat_revalidate,
+ .d_hash = vfat_hash,
+ .d_compare = vfat_cmp,
};
/* Characters that are undesirable in an MS-DOS file name */
@@ -569,6 +599,7 @@ static int vfat_build_slots(struct inode *dir, const unsigned char *name,
unsigned char msdos_name[MSDOS_NAME];
wchar_t *uname;
__le16 time, date;
+ u8 time_cs;
int err, ulen, usize, i;
loff_t offset;
@@ -621,10 +652,10 @@ shortname:
memcpy(de->name, msdos_name, MSDOS_NAME);
de->attr = is_dir ? ATTR_DIR : ATTR_ARCH;
de->lcase = lcase;
- fat_date_unix2dos(ts->tv_sec, &time, &date, sbi->options.tz_utc);
+ fat_time_unix2fat(sbi, ts, &time, &date, &time_cs);
de->time = de->ctime = time;
de->date = de->cdate = de->adate = date;
- de->ctime_cs = 0;
+ de->ctime_cs = time_cs;
de->start = cpu_to_le16(cluster);
de->starthi = cpu_to_le16(cluster >> 16);
de->size = 0;
@@ -683,46 +714,58 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
{
struct super_block *sb = dir->i_sb;
struct fat_slot_info sinfo;
- struct inode *inode = NULL;
+ struct inode *inode;
struct dentry *alias;
- int err, table;
+ int err;
lock_super(sb);
- table = (MSDOS_SB(sb)->options.name_check == 's') ? 2 : 0;
- dentry->d_op = &vfat_dentry_ops[table];
err = vfat_find(dir, &dentry->d_name, &sinfo);
if (err) {
- table++;
+ if (err == -ENOENT) {
+ inode = NULL;
+ goto out;
+ }
goto error;
}
+
inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
brelse(sinfo.bh);
if (IS_ERR(inode)) {
- unlock_super(sb);
- return ERR_CAST(inode);
+ err = PTR_ERR(inode);
+ goto error;
}
- alias = d_find_alias(inode);
- if (alias) {
- if (d_invalidate(alias) == 0)
- dput(alias);
- else {
- iput(inode);
- unlock_super(sb);
- return alias;
- }
+ alias = d_find_alias(inode);
+ if (alias && !(alias->d_flags & DCACHE_DISCONNECTED)) {
+ /*
+ * This inode has non DCACHE_DISCONNECTED dentry. This
+ * means, the user did ->lookup() by an another name
+ * (longname vs 8.3 alias of it) in past.
+ *
+ * Switch to new one for reason of locality if possible.
+ */
+ BUG_ON(d_unhashed(alias));
+ if (!S_ISDIR(inode->i_mode))
+ d_move(alias, dentry);
+ iput(inode);
+ unlock_super(sb);
+ return alias;
}
-error:
+out:
unlock_super(sb);
- dentry->d_op = &vfat_dentry_ops[table];
+ dentry->d_op = sb->s_root->d_op;
dentry->d_time = dentry->d_parent->d_inode->i_version;
dentry = d_splice_alias(inode, dentry);
if (dentry) {
- dentry->d_op = &vfat_dentry_ops[table];
+ dentry->d_op = sb->s_root->d_op;
dentry->d_time = dentry->d_parent->d_inode->i_version;
}
return dentry;
+
+error:
+ unlock_super(sb);
+ return ERR_PTR(err);
}
static int vfat_create(struct inode *dir, struct dentry *dentry, int mode,
@@ -1014,9 +1057,9 @@ static int vfat_fill_super(struct super_block *sb, void *data, int silent)
return res;
if (MSDOS_SB(sb)->options.name_check != 's')
- sb->s_root->d_op = &vfat_dentry_ops[0];
+ sb->s_root->d_op = &vfat_ci_dentry_ops;
else
- sb->s_root->d_op = &vfat_dentry_ops[2];
+ sb->s_root->d_op = &vfat_dentry_ops;
return 0;
}
diff --git a/fs/file_table.c b/fs/file_table.c
index efc06faede6..5ad0eca6eea 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -269,6 +269,10 @@ void __fput(struct file *file)
eventpoll_release(file);
locks_remove_flock(file);
+ if (unlikely(file->f_flags & FASYNC)) {
+ if (file->f_op && file->f_op->fasync)
+ file->f_op->fasync(-1, file, 0);
+ }
if (file->f_op && file->f_op->release)
file->f_op->release(inode, file);
security_file_free(file);
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 87250b6a868..b72361479be 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1056,7 +1056,6 @@ static int fuse_dev_release(struct inode *inode, struct file *file)
end_requests(fc, &fc->pending);
end_requests(fc, &fc->processing);
spin_unlock(&fc->lock);
- fasync_helper(-1, file, 0, &fc->fasync);
fuse_conn_put(fc);
}
diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h
index 6ae9011b95e..2f34f8f2134 100644
--- a/fs/hostfs/hostfs.h
+++ b/fs/hostfs/hostfs.h
@@ -81,7 +81,7 @@ extern int do_rmdir(const char *file);
extern int do_mknod(const char *file, int mode, unsigned int major,
unsigned int minor);
extern int link_file(const char *from, const char *to);
-extern int do_readlink(char *file, char *buf, int size);
+extern int hostfs_do_readlink(char *file, char *buf, int size);
extern int rename_file(char *from, char *to);
extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
long long *bfree_out, long long *bavail_out,
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 7f34f4385de..3a31451ac17 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -168,7 +168,7 @@ static char *follow_link(char *link)
if (name == NULL)
goto out;
- n = do_readlink(link, name, len);
+ n = hostfs_do_readlink(link, name, len);
if (n < len)
break;
len *= 2;
@@ -943,7 +943,7 @@ int hostfs_link_readpage(struct file *file, struct page *page)
name = inode_name(page->mapping->host, 0);
if (name == NULL)
return -ENOMEM;
- err = do_readlink(name, buffer, PAGE_CACHE_SIZE);
+ err = hostfs_do_readlink(name, buffer, PAGE_CACHE_SIZE);
kfree(name);
if (err == PAGE_CACHE_SIZE)
err = -E2BIG;
diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
index 53fd0a67c11..b79424f9328 100644
--- a/fs/hostfs/hostfs_user.c
+++ b/fs/hostfs/hostfs_user.c
@@ -377,7 +377,7 @@ int link_file(const char *to, const char *from)
return 0;
}
-int do_readlink(char *file, char *buf, int size)
+int hostfs_do_readlink(char *file, char *buf, int size)
{
int n;
diff --git a/fs/inotify.c b/fs/inotify.c
index 690e72595e6..7bbed1b8982 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -106,6 +106,20 @@ void get_inotify_watch(struct inotify_watch *watch)
}
EXPORT_SYMBOL_GPL(get_inotify_watch);
+int pin_inotify_watch(struct inotify_watch *watch)
+{
+ struct super_block *sb = watch->inode->i_sb;
+ spin_lock(&sb_lock);
+ if (sb->s_count >= S_BIAS) {
+ atomic_inc(&sb->s_active);
+ spin_unlock(&sb_lock);
+ atomic_inc(&watch->count);
+ return 1;
+ }
+ spin_unlock(&sb_lock);
+ return 0;
+}
+
/**
* put_inotify_watch - decrements the ref count on a given watch. cleans up
* watch references if the count reaches zero. inotify_watch is freed by
@@ -124,6 +138,13 @@ void put_inotify_watch(struct inotify_watch *watch)
}
EXPORT_SYMBOL_GPL(put_inotify_watch);
+void unpin_inotify_watch(struct inotify_watch *watch)
+{
+ struct super_block *sb = watch->inode->i_sb;
+ put_inotify_watch(watch);
+ deactivate_super(sb);
+}
+
/*
* inotify_handle_get_wd - returns the next WD for use by the given handle
*
@@ -479,6 +500,112 @@ void inotify_init_watch(struct inotify_watch *watch)
}
EXPORT_SYMBOL_GPL(inotify_init_watch);
+/*
+ * Watch removals suck violently. To kick the watch out we need (in this
+ * order) inode->inotify_mutex and ih->mutex. That's fine if we have
+ * a hold on inode; however, for all other cases we need to make damn sure
+ * we don't race with umount. We can *NOT* just grab a reference to a
+ * watch - inotify_unmount_inodes() will happily sail past it and we'll end
+ * with reference to inode potentially outliving its superblock. Ideally
+ * we just want to grab an active reference to superblock if we can; that
+ * will make sure we won't go into inotify_umount_inodes() until we are
+ * done. Cleanup is just deactivate_super(). However, that leaves a messy
+ * case - what if we *are* racing with umount() and active references to
+ * superblock can't be acquired anymore? We can bump ->s_count, grab
+ * ->s_umount, which will almost certainly wait until the superblock is shut
+ * down and the watch in question is pining for fjords. That's fine, but
+ * there is a problem - we might have hit the window between ->s_active
+ * getting to 0 / ->s_count - below S_BIAS (i.e. the moment when superblock
+ * is past the point of no return and is heading for shutdown) and the
+ * moment when deactivate_super() acquires ->s_umount. We could just do
+ * drop_super() yield() and retry, but that's rather antisocial and this
+ * stuff is luser-triggerable. OTOH, having grabbed ->s_umount and having
+ * found that we'd got there first (i.e. that ->s_root is non-NULL) we know
+ * that we won't race with inotify_umount_inodes(). So we could grab a
+ * reference to watch and do the rest as above, just with drop_super() instead
+ * of deactivate_super(), right? Wrong. We had to drop ih->mutex before we
+ * could grab ->s_umount. So the watch could've been gone already.
+ *
+ * That still can be dealt with - we need to save watch->wd, do idr_find()
+ * and compare its result with our pointer. If they match, we either have
+ * the damn thing still alive or we'd lost not one but two races at once,
+ * the watch had been killed and a new one got created with the same ->wd
+ * at the same address. That couldn't have happened in inotify_destroy(),
+ * but inotify_rm_wd() could run into that. Still, "new one got created"
+ * is not a problem - we have every right to kill it or leave it alone,
+ * whatever's more convenient.
+ *
+ * So we can use idr_find(...) == watch && watch->inode->i_sb == sb as
+ * "grab it and kill it" check. If it's been our original watch, we are
+ * fine, if it's a newcomer - nevermind, just pretend that we'd won the
+ * race and kill the fscker anyway; we are safe since we know that its
+ * superblock won't be going away.
+ *
+ * And yes, this is far beyond mere "not very pretty"; so's the entire
+ * concept of inotify to start with.
+ */
+
+/**
+ * pin_to_kill - pin the watch down for removal
+ * @ih: inotify handle
+ * @watch: watch to kill
+ *
+ * Called with ih->mutex held, drops it. Possible return values:
+ * 0 - nothing to do, it has died
+ * 1 - remove it, drop the reference and deactivate_super()
+ * 2 - remove it, drop the reference and drop_super(); we tried hard to avoid
+ * that variant, since it involved a lot of PITA, but that's the best that
+ * could've been done.
+ */
+static int pin_to_kill(struct inotify_handle *ih, struct inotify_watch *watch)
+{
+ struct super_block *sb = watch->inode->i_sb;
+ s32 wd = watch->wd;
+
+ spin_lock(&sb_lock);
+ if (sb->s_count >= S_BIAS) {
+ atomic_inc(&sb->s_active);
+ spin_unlock(&sb_lock);
+ get_inotify_watch(watch);
+ mutex_unlock(&ih->mutex);
+ return 1; /* the best outcome */
+ }
+ sb->s_count++;
+ spin_unlock(&sb_lock);
+ mutex_unlock(&ih->mutex); /* can't grab ->s_umount under it */
+ down_read(&sb->s_umount);
+ if (likely(!sb->s_root)) {
+ /* fs is already shut down; the watch is dead */
+ drop_super(sb);
+ return 0;
+ }
+ /* raced with the final deactivate_super() */
+ mutex_lock(&ih->mutex);
+ if (idr_find(&ih->idr, wd) != watch || watch->inode->i_sb != sb) {
+ /* the watch is dead */
+ mutex_unlock(&ih->mutex);
+ drop_super(sb);
+ return 0;
+ }
+ /* still alive or freed and reused with the same sb and wd; kill */
+ get_inotify_watch(watch);
+ mutex_unlock(&ih->mutex);
+ return 2;
+}
+
+static void unpin_and_kill(struct inotify_watch *watch, int how)
+{
+ struct super_block *sb = watch->inode->i_sb;
+ put_inotify_watch(watch);
+ switch (how) {
+ case 1:
+ deactivate_super(sb);
+ break;
+ case 2:
+ drop_super(sb);
+ }
+}
+
/**
* inotify_destroy - clean up and destroy an inotify instance
* @ih: inotify handle
@@ -490,11 +617,15 @@ void inotify_destroy(struct inotify_handle *ih)
* pretty. We cannot do a simple iteration over the list, because we
* do not know the inode until we iterate to the watch. But we need to
* hold inode->inotify_mutex before ih->mutex. The following works.
+ *
+ * AV: it had to become even uglier to start working ;-/
*/
while (1) {
struct inotify_watch *watch;
struct list_head *watches;
+ struct super_block *sb;
struct inode *inode;
+ int how;
mutex_lock(&ih->mutex);
watches = &ih->watches;
@@ -503,8 +634,10 @@ void inotify_destroy(struct inotify_handle *ih)
break;
}
watch = list_first_entry(watches, struct inotify_watch, h_list);
- get_inotify_watch(watch);
- mutex_unlock(&ih->mutex);
+ sb = watch->inode->i_sb;
+ how = pin_to_kill(ih, watch);
+ if (!how)
+ continue;
inode = watch->inode;
mutex_lock(&inode->inotify_mutex);
@@ -518,7 +651,7 @@ void inotify_destroy(struct inotify_handle *ih)
mutex_unlock(&ih->mutex);
mutex_unlock(&inode->inotify_mutex);
- put_inotify_watch(watch);
+ unpin_and_kill(watch, how);
}
/* free this handle: the put matching the get in inotify_init() */
@@ -719,7 +852,9 @@ void inotify_evict_watch(struct inotify_watch *watch)
int inotify_rm_wd(struct inotify_handle *ih, u32 wd)
{
struct inotify_watch *watch;
+ struct super_block *sb;
struct inode *inode;
+ int how;
mutex_lock(&ih->mutex);
watch = idr_find(&ih->idr, wd);
@@ -727,9 +862,12 @@ int inotify_rm_wd(struct inotify_handle *ih, u32 wd)
mutex_unlock(&ih->mutex);
return -EINVAL;
}
- get_inotify_watch(watch);
+ sb = watch->inode->i_sb;
+ how = pin_to_kill(ih, watch);
+ if (!how)
+ return 0;
+
inode = watch->inode;
- mutex_unlock(&ih->mutex);
mutex_lock(&inode->inotify_mutex);
mutex_lock(&ih->mutex);
@@ -740,7 +878,7 @@ int inotify_rm_wd(struct inotify_handle *ih, u32 wd)
mutex_unlock(&ih->mutex);
mutex_unlock(&inode->inotify_mutex);
- put_inotify_watch(watch);
+ unpin_and_kill(watch, how);
return 0;
}
diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index d85c7d931cd..d367e9b9286 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -537,9 +537,6 @@ static int inotify_release(struct inode *ignored, struct file *file)
inotify_dev_event_dequeue(dev);
mutex_unlock(&dev->ev_mutex);
- if (file->f_flags & FASYNC)
- inotify_fasync(-1, file, 0);
-
/* free this device: the put matching the get in inotify_init() */
put_inotify_dev(dev);
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index 1bd8d4acc6f..61f32f3868c 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -115,7 +115,7 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
*/
void __log_wait_for_space(journal_t *journal)
{
- int nblocks;
+ int nblocks, space_left;
assert_spin_locked(&journal->j_state_lock);
nblocks = jbd_space_needed(journal);
@@ -128,25 +128,42 @@ void __log_wait_for_space(journal_t *journal)
/*
* Test again, another process may have checkpointed while we
* were waiting for the checkpoint lock. If there are no
- * outstanding transactions there is nothing to checkpoint and
- * we can't make progress. Abort the journal in this case.
+ * transactions ready to be checkpointed, try to recover
+ * journal space by calling cleanup_journal_tail(), and if
+ * that doesn't work, by waiting for the currently committing
+ * transaction to complete. If there is absolutely no way
+ * to make progress, this is either a BUG or corrupted
+ * filesystem, so abort the journal and leave a stack
+ * trace for forensic evidence.
*/
spin_lock(&journal->j_state_lock);
spin_lock(&journal->j_list_lock);
nblocks = jbd_space_needed(journal);
- if (__log_space_left(journal) < nblocks) {
+ space_left = __log_space_left(journal);
+ if (space_left < nblocks) {
int chkpt = journal->j_checkpoint_transactions != NULL;
+ tid_t tid = 0;
+ if (journal->j_committing_transaction)
+ tid = journal->j_committing_transaction->t_tid;
spin_unlock(&journal->j_list_lock);
spin_unlock(&journal->j_state_lock);
if (chkpt) {
log_do_checkpoint(journal);
+ } else if (cleanup_journal_tail(journal) == 0) {
+ /* We were able to recover space; yay! */
+ ;
+ } else if (tid) {
+ log_wait_commit(journal, tid);
} else {
- printk(KERN_ERR "%s: no transactions\n",
- __func__);
+ printk(KERN_ERR "%s: needed %d blocks and "
+ "only had %d space available\n",
+ __func__, nblocks, space_left);
+ printk(KERN_ERR "%s: no way to get more "
+ "journal space\n", __func__);
+ WARN_ON(1);
journal_abort(journal, 0);
}
-
spin_lock(&journal->j_state_lock);
} else {
spin_unlock(&journal->j_list_lock);
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index d15cd6e7251..60d4c32c880 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -860,7 +860,6 @@ out:
* int journal_get_undo_access() - Notify intent to modify metadata with non-rewindable consequences
* @handle: transaction
* @bh: buffer to undo
- * @credits: store the number of taken credits here (if not NULL)
*
* Sometimes there is a need to distinguish between metadata which has
* been committed to disk and that which has not. The ext3fs code uses
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index 9203c3332f1..9497718fe92 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -116,7 +116,7 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
*/
void __jbd2_log_wait_for_space(journal_t *journal)
{
- int nblocks;
+ int nblocks, space_left;
assert_spin_locked(&journal->j_state_lock);
nblocks = jbd_space_needed(journal);
@@ -129,25 +129,43 @@ void __jbd2_log_wait_for_space(journal_t *journal)
/*
* Test again, another process may have checkpointed while we
* were waiting for the checkpoint lock. If there are no
- * outstanding transactions there is nothing to checkpoint and
- * we can't make progress. Abort the journal in this case.
+ * transactions ready to be checkpointed, try to recover
+ * journal space by calling cleanup_journal_tail(), and if
+ * that doesn't work, by waiting for the currently committing
+ * transaction to complete. If there is absolutely no way
+ * to make progress, this is either a BUG or corrupted
+ * filesystem, so abort the journal and leave a stack
+ * trace for forensic evidence.
*/
spin_lock(&journal->j_state_lock);
spin_lock(&journal->j_list_lock);
nblocks = jbd_space_needed(journal);
- if (__jbd2_log_space_left(journal) < nblocks) {
+ space_left = __jbd2_log_space_left(journal);
+ if (space_left < nblocks) {
int chkpt = journal->j_checkpoint_transactions != NULL;
+ tid_t tid = 0;
+ if (journal->j_committing_transaction)
+ tid = journal->j_committing_transaction->t_tid;
spin_unlock(&journal->j_list_lock);
spin_unlock(&journal->j_state_lock);
if (chkpt) {
jbd2_log_do_checkpoint(journal);
+ } else if (jbd2_cleanup_journal_tail(journal) == 0) {
+ /* We were able to recover space; yay! */
+ ;
+ } else if (tid) {
+ jbd2_log_wait_commit(journal, tid);
} else {
- printk(KERN_ERR "%s: no transactions\n",
- __func__);
+ printk(KERN_ERR "%s: needed %d blocks and "
+ "only had %d space available\n",
+ __func__, nblocks, space_left);
+ printk(KERN_ERR "%s: no way to get more "
+ "journal space in %s\n", __func__,
+ journal->j_devname);
+ WARN_ON(1);
jbd2_journal_abort(journal, 0);
}
-
spin_lock(&journal->j_state_lock);
} else {
spin_unlock(&journal->j_list_lock);
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 8b119e16aa3..ebc667bc54a 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -974,6 +974,9 @@ restart_loop:
journal->j_committing_transaction = NULL;
spin_unlock(&journal->j_state_lock);
+ if (journal->j_commit_callback)
+ journal->j_commit_callback(journal, commit_transaction);
+
if (commit_transaction->t_checkpoint_list == NULL &&
commit_transaction->t_checkpoint_io_list == NULL) {
__jbd2_journal_drop_transaction(journal, commit_transaction);
@@ -995,11 +998,8 @@ restart_loop:
}
spin_unlock(&journal->j_list_lock);
- if (journal->j_commit_callback)
- journal->j_commit_callback(journal, commit_transaction);
-
trace_mark(jbd2_end_commit, "dev %s transaction %d head %d",
- journal->j_devname, commit_transaction->t_tid,
+ journal->j_devname, journal->j_commit_sequence,
journal->j_tail_sequence);
jbd_debug(1, "JBD: commit %d complete, head %d\n",
journal->j_commit_sequence, journal->j_tail_sequence);
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 783de118de9..e70d657a19f 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1089,6 +1089,7 @@ journal_t * jbd2_journal_init_inode (struct inode *inode)
if (!journal->j_wbuf) {
printk(KERN_ERR "%s: Cant allocate bhs for commit thread\n",
__func__);
+ jbd2_stats_proc_exit(journal);
kfree(journal);
return NULL;
}
@@ -1098,6 +1099,7 @@ journal_t * jbd2_journal_init_inode (struct inode *inode)
if (err) {
printk(KERN_ERR "%s: Cannnot locate journal superblock\n",
__func__);
+ jbd2_stats_proc_exit(journal);
kfree(journal);
return NULL;
}
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 8adebd3e43c..3cceef4ad2b 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -85,15 +85,15 @@ static int jffs2_garbage_collect_thread(void *_c)
for (;;) {
allow_signal(SIGHUP);
again:
+ spin_lock(&c->erase_completion_lock);
if (!jffs2_thread_should_wake(c)) {
set_current_state (TASK_INTERRUPTIBLE);
+ spin_unlock(&c->erase_completion_lock);
D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n"));
- /* Yes, there's a race here; we checked jffs2_thread_should_wake()
- before setting current->state to TASK_INTERRUPTIBLE. But it doesn't
- matter - We don't care if we miss a wakeup, because the GC thread
- is only an optimisation anyway. */
schedule();
- }
+ } else
+ spin_unlock(&c->erase_completion_lock);
+
/* This thread is purely an optimisation. But if it runs when
other things could be running, it actually makes things a
diff --git a/fs/jffs2/compr_lzo.c b/fs/jffs2/compr_lzo.c
index 47b045797e4..90cb60d0978 100644
--- a/fs/jffs2/compr_lzo.c
+++ b/fs/jffs2/compr_lzo.c
@@ -19,7 +19,7 @@
static void *lzo_mem;
static void *lzo_compress_buf;
-static DEFINE_MUTEX(deflate_mutex);
+static DEFINE_MUTEX(deflate_mutex); /* for lzo_mem and lzo_compress_buf */
static void free_workspace(void)
{
@@ -49,18 +49,21 @@ static int jffs2_lzo_compress(unsigned char *data_in, unsigned char *cpage_out,
mutex_lock(&deflate_mutex);
ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem);
- mutex_unlock(&deflate_mutex);
-
if (ret != LZO_E_OK)
- return -1;
+ goto fail;
if (compress_size > *dstlen)
- return -1;
+ goto fail;
memcpy(cpage_out, lzo_compress_buf, compress_size);
- *dstlen = compress_size;
+ mutex_unlock(&deflate_mutex);
+ *dstlen = compress_size;
return 0;
+
+ fail:
+ mutex_unlock(&deflate_mutex);
+ return -1;
}
static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 0875b60b4bf..21a052915aa 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -261,9 +261,11 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
jffs2_sum_reset_collected(c->summary); /* reset collected summary */
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
/* adjust write buffer offset, else we get a non contiguous write bug */
if (!(c->wbuf_ofs % c->sector_size) && !c->wbuf_len)
c->wbuf_ofs = 0xffffffff;
+#endif
D1(printk(KERN_DEBUG "jffs2_find_nextblock(): new nextblock = 0x%08x\n", c->nextblock->offset));
diff --git a/fs/libfs.c b/fs/libfs.c
index 74688598bcf..e960a832190 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -814,7 +814,7 @@ EXPORT_SYMBOL(simple_getattr);
EXPORT_SYMBOL(simple_link);
EXPORT_SYMBOL(simple_lookup);
EXPORT_SYMBOL(simple_pin_fs);
-EXPORT_SYMBOL(simple_prepare_write);
+EXPORT_UNUSED_SYMBOL(simple_prepare_write);
EXPORT_SYMBOL(simple_readpage);
EXPORT_SYMBOL(simple_release_fs);
EXPORT_SYMBOL(simple_rename);
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 014f6ce4817..4dfdcbc6bf6 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -434,6 +434,7 @@ nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
* 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);
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 548b0bb2b84..3ca89e2a938 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -466,6 +466,7 @@ nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
* 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);
diff --git a/fs/msdos/Makefile b/fs/msdos/Makefile
deleted file mode 100644
index ea67646fcb9..00000000000
--- a/fs/msdos/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for the Linux msdos filesystem routines.
-#
-
-obj-$(CONFIG_MSDOS_FS) += msdos.o
-
-msdos-y := namei.o
diff --git a/fs/namei.c b/fs/namei.c
index 09ce58e49e7..d34e0f9681c 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1378,7 +1378,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
if (IS_APPEND(dir))
return -EPERM;
if (check_sticky(dir, victim->d_inode)||IS_APPEND(victim->d_inode)||
- IS_IMMUTABLE(victim->d_inode))
+ IS_IMMUTABLE(victim->d_inode) || IS_SWAPFILE(victim->d_inode))
return -EPERM;
if (isdir) {
if (!S_ISDIR(victim->d_inode->i_mode))
diff --git a/fs/namespace.c b/fs/namespace.c
index cce46702d33..65b3dc844c8 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1815,8 +1815,8 @@ static void shrink_submounts(struct vfsmount *mnt, struct list_head *umounts)
while (!list_empty(&graveyard)) {
m = list_first_entry(&graveyard, struct vfsmount,
mnt_expire);
- touch_mnt_namespace(mnt->mnt_ns);
- umount_tree(mnt, 1, umounts);
+ touch_mnt_namespace(m->mnt_ns);
+ umount_tree(m, 1, umounts);
}
}
}
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index b9195c02a86..d22eb383e1c 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -5,7 +5,7 @@
*
* nfs inode and superblock handling functions
*
- * Modularised by Alan Cox <Alan.Cox@linux.org>, while hacking some
+ * Modularised by Alan Cox <alan@lxorguk.ukuu.org.uk>, while hacking some
* experimental NFS changes. Modularisation taken straight from SYS5 fs.
*
* Change to nfs_read_super() to permit NFS mounts to multi-homed hosts.
@@ -908,21 +908,16 @@ static int nfs_size_need_update(const struct inode *inode, const struct nfs_fatt
return nfs_size_to_loff_t(fattr->size) > i_size_read(inode);
}
-static unsigned long nfs_attr_generation_counter;
+static atomic_long_t nfs_attr_generation_counter;
static unsigned long nfs_read_attr_generation_counter(void)
{
- smp_rmb();
- return nfs_attr_generation_counter;
+ return atomic_long_read(&nfs_attr_generation_counter);
}
unsigned long nfs_inc_attr_generation_counter(void)
{
- unsigned long ret;
- smp_rmb();
- ret = ++nfs_attr_generation_counter;
- smp_wmb();
- return ret;
+ return atomic_long_inc_return(&nfs_attr_generation_counter);
}
void nfs_fattr_init(struct nfs_fattr *fattr)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index a3b0061dfd4..f48db679a1c 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -5,7 +5,7 @@
*
* nfs superblock handling functions
*
- * Modularised by Alan Cox <Alan.Cox@linux.org>, while hacking some
+ * Modularised by Alan Cox <alan@lxorguk.ukuu.org.uk>, while hacking some
* experimental NFS changes. Modularisation taken straight from SYS5 fs.
*
* Change to nfs_read_super() to permit NFS mounts to multi-homed hosts.
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 0bc56f6d927..4433c8f0016 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1875,11 +1875,11 @@ static int nfsd_buffered_readdir(struct file *file, filldir_t func,
return -ENOMEM;
offset = *offsetp;
- cdp->err = nfserr_eof; /* will be cleared on successful read */
while (1) {
unsigned int reclen;
+ cdp->err = nfserr_eof; /* will be cleared on successful read */
buf.used = 0;
buf.full = 0;
@@ -1912,8 +1912,6 @@ static int nfsd_buffered_readdir(struct file *file, filldir_t func,
de = (struct buffered_dirent *)((char *)de + reclen);
}
offset = vfs_llseek(file, 0, SEEK_CUR);
- if (!buf.full)
- break;
}
done:
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 8d3225a7807..e2570a3bc2b 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -247,8 +247,8 @@ int ocfs2_update_inode_atime(struct inode *inode,
mlog_entry_void();
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
- if (handle == NULL) {
- ret = -ENOMEM;
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
mlog_errno(ret);
goto out;
}
@@ -312,8 +312,8 @@ static int ocfs2_simple_size_update(struct inode *inode,
handle_t *handle = NULL;
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
- if (handle == NULL) {
- ret = -ENOMEM;
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
mlog_errno(ret);
goto out;
}
@@ -679,8 +679,7 @@ leave:
/* Some parts of this taken from generic_cont_expand, which turned out
* to be too fragile to do exactly what we need without us having to
- * worry about recursive locking in ->prepare_write() and
- * ->commit_write(). */
+ * worry about recursive locking in ->write_begin() and ->write_end(). */
static int ocfs2_write_zero_page(struct inode *inode,
u64 size)
{
@@ -1056,8 +1055,8 @@ static int __ocfs2_write_remove_suid(struct inode *inode,
(unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_mode);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
- if (handle == NULL) {
- ret = -ENOMEM;
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
mlog_errno(ret);
goto out;
}
@@ -1260,8 +1259,8 @@ static int __ocfs2_remove_inode_range(struct inode *inode,
}
handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
- if (handle == NULL) {
- ret = -ENOMEM;
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
mlog_errno(ret);
goto out;
}
@@ -1353,8 +1352,8 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
goto out;
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
- if (handle == NULL) {
- ret = -ENOMEM;
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
mlog_errno(ret);
goto out;
}
@@ -1867,6 +1866,13 @@ relock:
written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos,
ppos, count, ocount);
if (written < 0) {
+ /*
+ * direct write may have instantiated a few
+ * blocks outside i_size. Trim these off again.
+ * Don't need i_size_read because we hold i_mutex.
+ */
+ if (*ppos + count > inode->i_size)
+ vmtruncate(inode, inode->i_size);
ret = written;
goto out_dio;
}
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 4903688f72a..7aa00d51187 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -1106,6 +1106,12 @@ void ocfs2_clear_inode(struct inode *inode)
oi->ip_last_trans = 0;
oi->ip_dir_start_lookup = 0;
oi->ip_blkno = 0ULL;
+
+ /*
+ * ip_jinode is used to track txns against this inode. We ensure that
+ * the journal is flushed before journal shutdown. Thus it is safe to
+ * have inodes get cleaned up after journal shutdown.
+ */
jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal,
&oi->ip_jinode);
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 81e40677eec..99fe9d584f3 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -690,6 +690,7 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb)
/* Shutdown the kernel journal system */
jbd2_journal_destroy(journal->j_journal);
+ journal->j_journal = NULL;
OCFS2_I(inode)->ip_open_count--;
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index 3dc18d67557..eea1d24713e 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -113,7 +113,11 @@ static int __ocfs2_page_mkwrite(struct inode *inode, struct buffer_head *di_bh,
* ocfs2_write_begin_nolock().
*/
if (!PageUptodate(page) || page->mapping != inode->i_mapping) {
- ret = -EINVAL;
+ /*
+ * the page has been umapped in ocfs2_data_downconvert_worker.
+ * So return 0 here and let VFS retry.
+ */
+ ret = 0;
goto out;
}
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 485a6aa0ad3..f4967e634ff 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -378,8 +378,8 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
}
inode = new_inode(dir->i_sb);
- if (IS_ERR(inode)) {
- status = PTR_ERR(inode);
+ if (!inode) {
+ status = -ENOMEM;
mlog(ML_ERROR, "new_inode failed!\n");
goto leave;
}
@@ -491,8 +491,10 @@ leave:
brelse(*new_fe_bh);
*new_fe_bh = NULL;
}
- if (inode)
+ if (inode) {
+ clear_nlink(inode);
iput(inode);
+ }
}
mlog_exit(status);
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index a21a465490c..fef7ece3237 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -473,6 +473,9 @@ static inline int ocfs2_uses_extended_slot_map(struct ocfs2_super *osb)
(____gd)->bg_signature); \
} while (0)
+#define OCFS2_IS_VALID_XATTR_BLOCK(ptr) \
+ (!strcmp((ptr)->xb_signature, OCFS2_XATTR_BLOCK_SIGNATURE))
+
static inline unsigned long ino_from_blkno(struct super_block *sb,
u64 blkno)
{
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index f24ce3d3f95..5f180cf7abb 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -742,12 +742,12 @@ struct ocfs2_group_desc
*/
struct ocfs2_xattr_entry {
__le32 xe_name_hash; /* hash value of xattr prefix+suffix. */
- __le16 xe_name_offset; /* byte offset from the 1st etnry in the local
+ __le16 xe_name_offset; /* byte offset from the 1st entry in the
local xattr storage(inode, xattr block or
xattr bucket). */
__u8 xe_name_len; /* xattr name len, does't include prefix. */
- __u8 xe_type; /* the low 7 bits indicates the name prefix's
- * type and the highest 1 bits indicate whether
+ __u8 xe_type; /* the low 7 bits indicate the name prefix
+ * type and the highest bit indicates whether
* the EA is stored in the local storage. */
__le64 xe_value_size; /* real xattr value length. */
};
@@ -766,9 +766,10 @@ struct ocfs2_xattr_header {
xattr. */
__le16 xh_name_value_len; /* total length of name/value
length in this bucket. */
- __le16 xh_num_buckets; /* bucket nums in one extent
- record, only valid in the
- first bucket. */
+ __le16 xh_num_buckets; /* Number of xattr buckets
+ in this extent record,
+ only valid in the first
+ bucket. */
__le64 xh_csum;
struct ocfs2_xattr_entry xh_entries[0]; /* xattr entry list. */
};
@@ -776,8 +777,8 @@ struct ocfs2_xattr_header {
/*
* On disk structure for xattr value root.
*
- * It is used when one extended attribute's size is larger, and we will save it
- * in an outside cluster. It will stored in a b-tree like file content.
+ * When an xattr's value is large enough, it is stored in an external
+ * b-tree like file data. The xattr value root points to this structure.
*/
struct ocfs2_xattr_value_root {
/*00*/ __le32 xr_clusters; /* clusters covered by xattr value. */
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 802c4149221..054e2efb0b7 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -3,25 +3,20 @@
*
* xattr.c
*
- * Copyright (C) 2008 Oracle. All rights reserved.
+ * Copyright (C) 2004, 2008 Oracle. All rights reserved.
*
* CREDITS:
- * Lots of code in this file is taken from ext3.
+ * Lots of code in this file is copy from linux/fs/ext3/xattr.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 as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * 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.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
*/
#include <linux/capability.h>
@@ -83,7 +78,7 @@ struct xattr_handler *ocfs2_xattr_handlers[] = {
NULL
};
-static struct xattr_handler *ocfs2_xattr_handler_map[] = {
+static struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {
[OCFS2_XATTR_INDEX_USER] = &ocfs2_xattr_user_handler,
[OCFS2_XATTR_INDEX_TRUSTED] = &ocfs2_xattr_trusted_handler,
};
@@ -116,6 +111,10 @@ static int ocfs2_xattr_bucket_get_name_value(struct inode *inode,
int *block_off,
int *new_offset);
+static int ocfs2_xattr_block_find(struct inode *inode,
+ int name_index,
+ const char *name,
+ struct ocfs2_xattr_search *xs);
static int ocfs2_xattr_index_block_find(struct inode *inode,
struct buffer_head *root_bh,
int name_index,
@@ -137,6 +136,24 @@ static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
static int ocfs2_delete_xattr_index_block(struct inode *inode,
struct buffer_head *xb_bh);
+static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
+{
+ return (1 << osb->s_clustersize_bits) / OCFS2_XATTR_BUCKET_SIZE;
+}
+
+static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb)
+{
+ return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits);
+}
+
+static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
+{
+ u16 len = sb->s_blocksize -
+ offsetof(struct ocfs2_xattr_header, xh_entries);
+
+ return len / sizeof(struct ocfs2_xattr_entry);
+}
+
static inline const char *ocfs2_xattr_prefix(int name_index)
{
struct xattr_handler *handler = NULL;
@@ -542,14 +559,12 @@ static int ocfs2_xattr_block_list(struct inode *inode,
mlog_errno(ret);
return ret;
}
- /*Verify the signature of xattr block*/
- if (memcmp((void *)blk_bh->b_data, OCFS2_XATTR_BLOCK_SIGNATURE,
- strlen(OCFS2_XATTR_BLOCK_SIGNATURE))) {
- ret = -EFAULT;
- goto cleanup;
- }
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;
@@ -749,47 +764,25 @@ static int ocfs2_xattr_block_get(struct inode *inode,
size_t buffer_size,
struct ocfs2_xattr_search *xs)
{
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
- struct buffer_head *blk_bh = NULL;
struct ocfs2_xattr_block *xb;
struct ocfs2_xattr_value_root *xv;
size_t size;
int ret = -ENODATA, name_offset, name_len, block_off, i;
- if (!di->i_xattr_loc)
- return ret;
-
memset(&xs->bucket, 0, sizeof(xs->bucket));
- ret = ocfs2_read_block(inode, le64_to_cpu(di->i_xattr_loc), &blk_bh);
- if (ret < 0) {
+ ret = ocfs2_xattr_block_find(inode, name_index, name, xs);
+ if (ret) {
mlog_errno(ret);
- return ret;
- }
- /*Verify the signature of xattr block*/
- if (memcmp((void *)blk_bh->b_data, OCFS2_XATTR_BLOCK_SIGNATURE,
- strlen(OCFS2_XATTR_BLOCK_SIGNATURE))) {
- ret = -EFAULT;
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;
- xs->base = (void *)xs->header;
- xs->end = (void *)(blk_bh->b_data) + blk_bh->b_size;
- xs->here = xs->header->xh_entries;
-
- ret = ocfs2_xattr_find_entry(name_index, name, xs);
- } else
- ret = ocfs2_xattr_index_block_find(inode, blk_bh,
- name_index,
- name, xs);
-
- if (ret)
+ if (xs->not_found) {
+ ret = -ENODATA;
goto cleanup;
+ }
+
+ xb = (struct ocfs2_xattr_block *)xs->xattr_bh->b_data;
size = le64_to_cpu(xs->here->xe_value_size);
if (buffer) {
ret = -ERANGE;
@@ -828,7 +821,8 @@ cleanup:
brelse(xs->bucket.bhs[i]);
memset(&xs->bucket, 0, sizeof(xs->bucket));
- brelse(blk_bh);
+ brelse(xs->xattr_bh);
+ xs->xattr_bh = NULL;
return ret;
}
@@ -837,11 +831,11 @@ cleanup:
* Copy an extended attribute into the buffer provided.
* Buffer is NULL to compute the size of buffer required.
*/
-int ocfs2_xattr_get(struct inode *inode,
- int name_index,
- const char *name,
- void *buffer,
- size_t buffer_size)
+static int ocfs2_xattr_get(struct inode *inode,
+ int name_index,
+ const char *name,
+ void *buffer,
+ size_t buffer_size)
{
int ret;
struct ocfs2_dinode *di = NULL;
@@ -871,7 +865,7 @@ int ocfs2_xattr_get(struct inode *inode,
down_read(&oi->ip_xattr_sem);
ret = ocfs2_xattr_ibody_get(inode, name_index, name, buffer,
buffer_size, &xis);
- if (ret == -ENODATA)
+ if (ret == -ENODATA && di->i_xattr_loc)
ret = ocfs2_xattr_block_get(inode, name_index, name, buffer,
buffer_size, &xbs);
up_read(&oi->ip_xattr_sem);
@@ -1229,7 +1223,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
free = min_offs - ((void *)last - xs->base) - sizeof(__u32);
if (free < 0)
- return -EFAULT;
+ return -EIO;
if (!xs->not_found) {
size_t size = 0;
@@ -1514,10 +1508,9 @@ static int ocfs2_xattr_free_block(struct inode *inode,
goto out;
}
- /*Verify the signature of xattr block*/
- if (memcmp((void *)blk_bh->b_data, OCFS2_XATTR_BLOCK_SIGNATURE,
- strlen(OCFS2_XATTR_BLOCK_SIGNATURE))) {
- ret = -EFAULT;
+ xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
+ if (!OCFS2_IS_VALID_XATTR_BLOCK(xb)) {
+ ret = -EIO;
goto out;
}
@@ -1527,7 +1520,6 @@ static int ocfs2_xattr_free_block(struct inode *inode,
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);
@@ -1771,15 +1763,14 @@ static int ocfs2_xattr_block_find(struct inode *inode,
mlog_errno(ret);
return ret;
}
- /*Verify the signature of xattr block*/
- if (memcmp((void *)blk_bh->b_data, OCFS2_XATTR_BLOCK_SIGNATURE,
- strlen(OCFS2_XATTR_BLOCK_SIGNATURE))) {
- ret = -EFAULT;
- goto cleanup;
+
+ 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;
@@ -1806,52 +1797,6 @@ cleanup:
}
/*
- * When all the xattrs are deleted from index btree, the ocfs2_xattr_tree
- * will be erased and ocfs2_xattr_block will have its ocfs2_xattr_header
- * re-initialized.
- */
-static int ocfs2_restore_xattr_block(struct inode *inode,
- struct ocfs2_xattr_search *xs)
-{
- int ret;
- handle_t *handle;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct ocfs2_xattr_block *xb =
- (struct ocfs2_xattr_block *)xs->xattr_bh->b_data;
- struct ocfs2_extent_list *el = &xb->xb_attrs.xb_root.xt_list;
- u16 xb_flags = le16_to_cpu(xb->xb_flags);
-
- BUG_ON(!(xb_flags & OCFS2_XATTR_INDEXED) ||
- le16_to_cpu(el->l_next_free_rec) != 0);
-
- handle = ocfs2_start_trans(osb, OCFS2_XATTR_BLOCK_UPDATE_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- handle = NULL;
- goto out;
- }
-
- ret = ocfs2_journal_access(handle, inode, xs->xattr_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret < 0) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- memset(&xb->xb_attrs, 0, inode->i_sb->s_blocksize -
- offsetof(struct ocfs2_xattr_block, xb_attrs));
-
- xb->xb_flags = cpu_to_le16(xb_flags & ~OCFS2_XATTR_INDEXED);
-
- ocfs2_journal_dirty(handle, xs->xattr_bh);
-
-out_commit:
- ocfs2_commit_trans(osb, handle);
-out:
- return ret;
-}
-
-/*
* ocfs2_xattr_block_set()
*
* Set, replace or remove an extended attribute into external block.
@@ -1961,8 +1906,6 @@ out:
}
ret = ocfs2_xattr_set_entry_index_block(inode, xi, xs);
- if (!ret && xblk->xb_attrs.xb_root.xt_list.l_next_free_rec == 0)
- ret = ocfs2_restore_xattr_block(inode, xs);
end:
@@ -2398,7 +2341,8 @@ static int ocfs2_xattr_index_block_find(struct inode *inode,
BUG_ON(p_blkno == 0 || num_clusters == 0 || first_hash > name_hash);
mlog(0, "find xattr extent rec %u clusters from %llu, the first hash "
- "in the rec is %u\n", num_clusters, p_blkno, first_hash);
+ "in the rec is %u\n", num_clusters, (unsigned long long)p_blkno,
+ first_hash);
ret = ocfs2_xattr_bucket_find(inode, name_index, name, name_hash,
p_blkno, first_hash, num_clusters, xs);
@@ -2422,7 +2366,7 @@ static int ocfs2_iterate_xattr_buckets(struct inode *inode,
memset(&bucket, 0, sizeof(bucket));
mlog(0, "iterating xattr buckets in %u clusters starting from %llu\n",
- clusters, blkno);
+ 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,
@@ -2440,7 +2384,8 @@ static int ocfs2_iterate_xattr_buckets(struct inode *inode,
if (i == 0)
num_buckets = le16_to_cpu(bucket.xh->xh_num_buckets);
- mlog(0, "iterating xattr bucket %llu, first hash %u\n", blkno,
+ 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));
if (func) {
ret = func(inode, &bucket, para);
@@ -2776,7 +2721,8 @@ static int ocfs2_xattr_create_index_block(struct inode *inode,
*/
blkno = ocfs2_clusters_to_blocks(inode->i_sb, bit_off);
- mlog(0, "allocate 1 cluster from %llu to xattr block\n", blkno);
+ 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) {
@@ -2818,7 +2764,11 @@ static int ocfs2_xattr_create_index_block(struct inode *inode,
if (data_bh)
ocfs2_journal_dirty(handle, data_bh);
- ocfs2_xattr_update_xattr_search(inode, xs, xb_bh, xh_bh);
+ ret = ocfs2_xattr_update_xattr_search(inode, xs, xb_bh, xh_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
/* Change from ocfs2_xattr_header to ocfs2_xattr_tree_root */
memset(&xb->xb_attrs, 0, inode->i_sb->s_blocksize -
@@ -2941,8 +2891,8 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
mlog(0, "adjust xattr bucket in %llu, count = %u, "
"xh_free_start = %u, xh_name_value_len = %u.\n",
- blkno, le16_to_cpu(xh->xh_count), xh_free_start,
- le16_to_cpu(xh->xh_name_value_len));
+ (unsigned long long)blkno, le16_to_cpu(xh->xh_count),
+ xh_free_start, le16_to_cpu(xh->xh_name_value_len));
/*
* sort all the entries by their offset.
@@ -3058,7 +3008,7 @@ static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,
prev_blkno += (num_clusters - 1) * bpc + bpc / 2;
mlog(0, "move half of xattrs in cluster %llu to %llu\n",
- prev_blkno, new_blkno);
+ (unsigned long long)prev_blkno, (unsigned long long)new_blkno);
/*
* We need to update the 1st half of the new cluster and
@@ -3168,26 +3118,74 @@ static int ocfs2_read_xattr_bucket(struct inode *inode,
}
/*
- * Move half num of the xattrs in old bucket(blk) to new bucket(new_blk).
+ * Find the suitable pos when we divide a bucket into 2.
+ * We have to make sure the xattrs with the same hash value exist
+ * in the same bucket.
+ *
+ * If this ocfs2_xattr_header covers more than one hash value, find a
+ * place where the hash value changes. Try to find the most even split.
+ * The most common case is that all entries have different hash values,
+ * and the first check we make will find a place to split.
+ */
+static int ocfs2_xattr_find_divide_pos(struct ocfs2_xattr_header *xh)
+{
+ struct ocfs2_xattr_entry *entries = xh->xh_entries;
+ int count = le16_to_cpu(xh->xh_count);
+ int delta, middle = count / 2;
+
+ /*
+ * We start at the middle. Each step gets farther away in both
+ * directions. We therefore hit the change in hash value
+ * nearest to the middle. Note that this loop does not execute for
+ * count < 2.
+ */
+ for (delta = 0; delta < middle; delta++) {
+ /* Let's check delta earlier than middle */
+ if (cmp_xe(&entries[middle - delta - 1],
+ &entries[middle - delta]))
+ return middle - delta;
+
+ /* For even counts, don't walk off the end */
+ if ((middle + delta + 1) == count)
+ continue;
+
+ /* Now try delta past middle */
+ if (cmp_xe(&entries[middle + delta],
+ &entries[middle + delta + 1]))
+ return middle + delta + 1;
+ }
+
+ /* Every entry had the same hash */
+ return count;
+}
+
+/*
+ * Move some xattrs in old bucket(blk) to new bucket(new_blk).
* first_hash will record the 1st hash of the new bucket.
+ *
+ * Normally half of the xattrs will be moved. But we have to make
+ * sure that the xattrs with the same hash value are stored in the
+ * same bucket. If all the xattrs in this bucket have the same hash
+ * value, the new bucket will be initialized as an empty one and the
+ * first_hash will be initialized as (hash_value+1).
*/
-static int ocfs2_half_xattr_bucket(struct inode *inode,
- handle_t *handle,
- u64 blk,
- u64 new_blk,
- u32 *first_hash,
- int new_bucket_head)
+static int ocfs2_divide_xattr_bucket(struct inode *inode,
+ handle_t *handle,
+ u64 blk,
+ u64 new_blk,
+ u32 *first_hash,
+ int new_bucket_head)
{
int ret, i;
- u16 count, start, len, name_value_len, xe_len, name_offset;
+ 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_header *xh;
struct ocfs2_xattr_entry *xe;
int blocksize = inode->i_sb->s_blocksize;
- mlog(0, "move half of xattrs from bucket %llu to %llu\n",
- blk, new_blk);
+ 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)
@@ -3220,21 +3218,44 @@ static int ocfs2_half_xattr_bucket(struct inode *inode,
for (i = 0; i < blk_per_bucket; i++) {
ret = ocfs2_journal_access(handle, inode, t_bhs[i],
- OCFS2_JOURNAL_ACCESS_CREATE);
+ 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;
+ count = le16_to_cpu(xh->xh_count);
+ start = ocfs2_xattr_find_divide_pos(xh);
+
+ if (start == count) {
+ xe = &xh->xh_entries[start-1];
+
+ /*
+ * initialized a new empty bucket here.
+ * 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);
+
+ xh = (struct ocfs2_xattr_header *)t_bhs[0]->b_data;
+ 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);
+
+ goto set_num_buckets;
+ }
+
/* 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);
/* update the new bucket. */
xh = (struct ocfs2_xattr_header *)t_bhs[0]->b_data;
- count = le16_to_cpu(xh->xh_count);
- start = count / 2;
/*
* Calculate the total name/value len and xh_free_start for
@@ -3291,6 +3312,7 @@ static int ocfs2_half_xattr_bucket(struct inode *inode,
xh->xh_free_start = xe->xe_name_offset;
}
+set_num_buckets:
/* set xh->xh_num_buckets for the new xh. */
if (new_bucket_head)
xh->xh_num_buckets = cpu_to_le16(1);
@@ -3308,9 +3330,13 @@ static int ocfs2_half_xattr_bucket(struct inode *inode,
*first_hash = le32_to_cpu(xh->xh_entries[0].xe_name_hash);
/*
- * Now only update the 1st block of the old bucket.
- * Please note that the entry has been sorted already above.
+ * Now only update the 1st block of the old bucket. If we
+ * just added a new empty bucket, there is no need to modify
+ * it.
*/
+ if (start == count)
+ goto out;
+
xh = (struct ocfs2_xattr_header *)s_bhs[0]->b_data;
memset(&xh->xh_entries[start], 0,
sizeof(struct ocfs2_xattr_entry) * (count - start));
@@ -3358,7 +3384,8 @@ static int ocfs2_cp_xattr_bucket(struct inode *inode,
BUG_ON(s_blkno == t_blkno);
mlog(0, "cp bucket %llu to %llu, target is %d\n",
- s_blkno, t_blkno, t_is_new);
+ (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);
@@ -3382,6 +3409,8 @@ static int ocfs2_cp_xattr_bucket(struct inode *inode,
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;
@@ -3428,7 +3457,8 @@ static int ocfs2_cp_xattr_cluster(struct inode *inode,
struct ocfs2_xattr_header *xh;
u64 to_blk_start = to_blk;
- mlog(0, "cp xattrs from cluster %llu to %llu\n", src_blk, to_blk);
+ mlog(0, "cp xattrs from cluster %llu to %llu\n",
+ (unsigned long long)src_blk, (unsigned long long)to_blk);
/*
* We need to update the new cluster and 1 more for the update of
@@ -3493,15 +3523,15 @@ out:
}
/*
- * Move half of the xattrs in this cluster to the new cluster.
+ * Move some xattrs in this cluster to the new cluster.
* This function should only be called when bucket size == cluster size.
* Otherwise ocfs2_mv_xattr_bucket_cross_cluster should be used instead.
*/
-static int ocfs2_half_xattr_cluster(struct inode *inode,
- handle_t *handle,
- u64 prev_blk,
- u64 new_blk,
- u32 *first_hash)
+static int ocfs2_divide_xattr_cluster(struct inode *inode,
+ handle_t *handle,
+ u64 prev_blk,
+ u64 new_blk,
+ u32 *first_hash)
{
u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
int ret, credits = 2 * blk_per_bucket;
@@ -3515,8 +3545,8 @@ static int ocfs2_half_xattr_cluster(struct inode *inode,
}
/* Move half of the xattr in start_blk to the next bucket. */
- return ocfs2_half_xattr_bucket(inode, handle, prev_blk,
- new_blk, first_hash, 1);
+ return ocfs2_divide_xattr_bucket(inode, handle, prev_blk,
+ new_blk, first_hash, 1);
}
/*
@@ -3559,7 +3589,8 @@ static int ocfs2_adjust_xattr_cross_cluster(struct inode *inode,
int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
mlog(0, "adjust xattrs from cluster %llu len %u to %llu\n",
- prev_blk, prev_clusters, new_blk);
+ (unsigned long long)prev_blk, prev_clusters,
+ (unsigned long long)new_blk);
if (ocfs2_xattr_buckets_per_cluster(OCFS2_SB(inode->i_sb)) > 1)
ret = ocfs2_mv_xattr_bucket_cross_cluster(inode,
@@ -3578,9 +3609,9 @@ static int ocfs2_adjust_xattr_cross_cluster(struct inode *inode,
last_blk, new_blk,
v_start);
else {
- ret = ocfs2_half_xattr_cluster(inode, handle,
- last_blk, new_blk,
- v_start);
+ ret = ocfs2_divide_xattr_cluster(inode, handle,
+ last_blk, new_blk,
+ v_start);
if ((*header_bh)->b_blocknr == last_blk && extend)
*extend = 0;
@@ -3629,7 +3660,7 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
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, prev_blkno);
+ prev_cpos, (unsigned long long)prev_blkno);
ocfs2_init_xattr_tree_extent_tree(&et, inode, root_bh);
@@ -3716,7 +3747,7 @@ static int ocfs2_add_new_xattr_cluster(struct inode *inode,
}
}
mlog(0, "Insert %u clusters at block %llu for xattr at %u\n",
- num_bits, block, v_start);
+ num_bits, (unsigned long long)block, v_start);
ret = ocfs2_insert_extent(osb, handle, inode, &et, v_start, block,
num_bits, 0, meta_ac);
if (ret < 0) {
@@ -3761,7 +3792,7 @@ static int ocfs2_extend_xattr_bucket(struct inode *inode,
u16 bucket = le16_to_cpu(first_xh->xh_num_buckets);
mlog(0, "extend xattr bucket in %llu, xattr extend rec starting "
- "from %llu, len = %u\n", start_blk,
+ "from %llu, len = %u\n", (unsigned long long)start_blk,
(unsigned long long)first_bh->b_blocknr, num_clusters);
BUG_ON(bucket >= num_buckets);
@@ -3797,8 +3828,8 @@ static int ocfs2_extend_xattr_bucket(struct inode *inode,
}
/* Move half of the xattr in start_blk to the next bucket. */
- ret = ocfs2_half_xattr_bucket(inode, handle, start_blk,
- start_blk + blk_per_bucket, NULL, 0);
+ ret = ocfs2_divide_xattr_bucket(inode, handle, start_blk,
+ start_blk + blk_per_bucket, NULL, 0);
le16_add_cpu(&first_xh->xh_num_buckets, 1);
ocfs2_journal_dirty(handle, first_bh);
@@ -4146,7 +4177,7 @@ static int ocfs2_xattr_value_update_size(struct inode *inode,
handle_t *handle = NULL;
handle = ocfs2_start_trans(osb, 1);
- if (handle == NULL) {
+ if (IS_ERR(handle)) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
@@ -4313,7 +4344,7 @@ static int ocfs2_rm_xattr_cluster(struct inode *inode,
}
handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
- if (handle == NULL) {
+ if (IS_ERR(handle)) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
@@ -4489,11 +4520,21 @@ out:
return ret;
}
-/* check whether the xattr bucket is filled up with the same hash value. */
+/*
+ * check whether the xattr bucket is filled up with the same hash value.
+ * If we want to insert the xattr with the same hash, return -ENOSPC.
+ * If we want to insert a xattr with different hash value, go ahead
+ * and ocfs2_divide_xattr_bucket will handle this.
+ */
static int ocfs2_check_xattr_bucket_collision(struct inode *inode,
- struct ocfs2_xattr_bucket *bucket)
+ struct ocfs2_xattr_bucket *bucket,
+ const char *name)
{
struct ocfs2_xattr_header *xh = bucket->xh;
+ u32 name_hash = ocfs2_xattr_name_hash(inode, name, strlen(name));
+
+ if (name_hash != le32_to_cpu(xh->xh_entries[0].xe_name_hash))
+ return 0;
if (xh->xh_entries[le16_to_cpu(xh->xh_count) - 1].xe_name_hash ==
xh->xh_entries[0].xe_name_hash) {
@@ -4616,7 +4657,9 @@ try_again:
* one bucket's worth, so check it here whether we need to
* add a new bucket for the insert.
*/
- ret = ocfs2_check_xattr_bucket_collision(inode, &xs->bucket);
+ ret = ocfs2_check_xattr_bucket_collision(inode,
+ &xs->bucket,
+ xi->name);
if (ret) {
mlog_errno(ret);
goto out;
@@ -4727,14 +4770,11 @@ out:
/*
* 'trusted' attributes support
*/
-
-#define XATTR_TRUSTED_PREFIX "trusted."
-
static size_t ocfs2_xattr_trusted_list(struct inode *inode, char *list,
size_t list_size, const char *name,
size_t name_len)
{
- const size_t prefix_len = sizeof(XATTR_TRUSTED_PREFIX) - 1;
+ const size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;
if (list && total_len <= list_size) {
@@ -4771,18 +4811,14 @@ struct xattr_handler ocfs2_xattr_trusted_handler = {
.set = ocfs2_xattr_trusted_set,
};
-
/*
* 'user' attributes support
*/
-
-#define XATTR_USER_PREFIX "user."
-
static size_t ocfs2_xattr_user_list(struct inode *inode, char *list,
size_t list_size, const char *name,
size_t name_len)
{
- const size_t prefix_len = sizeof(XATTR_USER_PREFIX) - 1;
+ const size_t prefix_len = XATTR_USER_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index c25c7c62a05..1d8314c7656 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -3,24 +3,16 @@
*
* xattr.h
*
- * Function prototypes
- *
- * Copyright (C) 2008 Oracle. All rights reserved.
+ * 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 as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * 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.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
*/
#ifndef OCFS2_XATTR_H
@@ -40,29 +32,11 @@ enum ocfs2_xattr_type {
extern struct xattr_handler ocfs2_xattr_user_handler;
extern struct xattr_handler ocfs2_xattr_trusted_handler;
-
-extern ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
-extern int ocfs2_xattr_get(struct inode *, int, const char *, void *, size_t);
-extern int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
- size_t, int);
-extern int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh);
extern struct xattr_handler *ocfs2_xattr_handlers[];
-static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
-{
- return (1 << osb->s_clustersize_bits) / OCFS2_XATTR_BUCKET_SIZE;
-}
-
-static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb)
-{
- return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits);
-}
-
-static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
-{
- u16 len = sb->s_blocksize -
- offsetof(struct ocfs2_xattr_header, xh_entries);
+ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
+int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
+ size_t, int);
+int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
- return len / sizeof(struct ocfs2_xattr_entry);
-}
#endif /* OCFS2_XATTR_H */
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 633f7a0ebb2..6d5b213b8a9 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -348,8 +348,8 @@ static ssize_t whole_disk_show(struct device *dev,
static DEVICE_ATTR(whole_disk, S_IRUSR | S_IRGRP | S_IROTH,
whole_disk_show, NULL);
-int add_partition(struct gendisk *disk, int partno,
- sector_t start, sector_t len, int flags)
+struct hd_struct *add_partition(struct gendisk *disk, int partno,
+ sector_t start, sector_t len, int flags)
{
struct hd_struct *p;
dev_t devt = MKDEV(0, 0);
@@ -361,15 +361,15 @@ int add_partition(struct gendisk *disk, int partno,
err = disk_expand_part_tbl(disk, partno);
if (err)
- return err;
+ return ERR_PTR(err);
ptbl = disk->part_tbl;
if (ptbl->part[partno])
- return -EBUSY;
+ return ERR_PTR(-EBUSY);
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p)
- return -ENOMEM;
+ return ERR_PTR(-EBUSY);
if (!init_part_stats(p)) {
err = -ENOMEM;
@@ -395,7 +395,7 @@ int add_partition(struct gendisk *disk, int partno,
err = blk_alloc_devt(p, &devt);
if (err)
- goto out_free;
+ goto out_free_stats;
pdev->devt = devt;
/* delay uevent until 'holders' subdir is created */
@@ -424,18 +424,20 @@ int add_partition(struct gendisk *disk, int partno,
if (!ddev->uevent_suppress)
kobject_uevent(&pdev->kobj, KOBJ_ADD);
- return 0;
+ return p;
+out_free_stats:
+ free_part_stats(p);
out_free:
kfree(p);
- return err;
+ return ERR_PTR(err);
out_del:
kobject_put(p->holder_dir);
device_del(pdev);
out_put:
put_device(pdev);
blk_free_devt(devt);
- return err;
+ return ERR_PTR(err);
}
/* Not exported, helper to add_disk(). */
@@ -566,15 +568,16 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
disk->disk_name, p, (unsigned long long) size);
size = get_capacity(disk) - from;
}
- res = add_partition(disk, p, from, size, state->parts[p].flags);
- if (res) {
- printk(KERN_ERR " %s: p%d could not be added: %d\n",
- disk->disk_name, p, -res);
+ part = add_partition(disk, p, from, size,
+ state->parts[p].flags);
+ if (IS_ERR(part)) {
+ printk(KERN_ERR " %s: p%d could not be added: %ld\n",
+ disk->disk_name, p, -PTR_ERR(part));
continue;
}
#ifdef CONFIG_BLK_DEV_MD
if (state->parts[p].flags & ADDPART_FLAG_RAID)
- md_autodetect_dev(bdev->bd_dev+p);
+ md_autodetect_dev(part_to_dev(part)->devt);
#endif
}
kfree(state);
diff --git a/fs/pipe.c b/fs/pipe.c
index fcba6542b8d..7aea8b89baa 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -717,14 +717,12 @@ pipe_rdwr_fasync(int fd, struct file *filp, int on)
static int
pipe_read_release(struct inode *inode, struct file *filp)
{
- pipe_read_fasync(-1, filp, 0);
return pipe_release(inode, 1, 0);
}
static int
pipe_write_release(struct inode *inode, struct file *filp)
{
- pipe_write_fasync(-1, filp, 0);
return pipe_release(inode, 0, 1);
}
@@ -733,7 +731,6 @@ pipe_rdwr_release(struct inode *inode, struct file *filp)
{
int decr, decw;
- pipe_rdwr_fasync(-1, filp, 0);
decr = (filp->f_mode & FMODE_READ) != 0;
decw = (filp->f_mode & FMODE_WRITE) != 0;
return pipe_release(inode, decr, decw);
diff --git a/fs/proc/array.c b/fs/proc/array.c
index bb9f4b05703..6af7fba7abb 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -40,7 +40,7 @@
*
*
* Alan Cox : security fixes.
- * <Alan.Cox@linux.org>
+ * <alan@lxorguk.ukuu.org.uk>
*
* Al Viro : safe handling of mm_struct
*
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 94fcfff6863..06ed10b7da9 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -31,6 +31,7 @@ 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/uptime.c b/fs/proc/uptime.c
index 0c10a0b3f14..df26aa88fa4 100644
--- a/fs/proc/uptime.c
+++ b/fs/proc/uptime.c
@@ -1,43 +1,45 @@
-#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/sched.h>
-#include <linux/seq_file.h>
#include <linux/time.h>
#include <asm/cputime.h>
-static int uptime_proc_show(struct seq_file *m, void *v)
+static int proc_calc_metrics(char *page, char **start, off_t off,
+ int count, int *eof, int len)
+{
+ if (len <= off + count)
+ *eof = 1;
+ *start = page + off;
+ len -= off;
+ if (len > count)
+ len = count;
+ if (len < 0)
+ len = 0;
+ return len;
+}
+
+static int uptime_read_proc(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
{
struct timespec uptime;
struct timespec idle;
+ int len;
cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
do_posix_clock_monotonic_gettime(&uptime);
monotonic_to_bootbased(&uptime);
cputime_to_timespec(idletime, &idle);
- seq_printf(m, "%lu.%02lu %lu.%02lu\n",
+ len = sprintf(page, "%lu.%02lu %lu.%02lu\n",
(unsigned long) uptime.tv_sec,
(uptime.tv_nsec / (NSEC_PER_SEC / 100)),
(unsigned long) idle.tv_sec,
(idle.tv_nsec / (NSEC_PER_SEC / 100)));
- return 0;
+ return proc_calc_metrics(page, start, off, count, eof, len);
}
-static int uptime_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, uptime_proc_show, NULL);
-}
-
-static const struct file_operations uptime_proc_fops = {
- .open = uptime_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
static int __init proc_uptime_init(void)
{
- proc_create("uptime", 0, NULL, &uptime_proc_fops);
+ create_proc_read_entry("uptime", 0, NULL, uptime_read_proc, NULL);
return 0;
}
module_init(proc_uptime_init);
diff --git a/fs/splice.c b/fs/splice.c
index a1e701c2715..1abab5cee4b 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -731,8 +731,8 @@ ssize_t splice_from_pipe(struct pipe_inode_info *pipe, struct file *out,
};
/*
- * The actor worker might be calling ->prepare_write and
- * ->commit_write. Most of the time, these expect i_mutex to
+ * The actor worker might be calling ->write_begin and
+ * ->write_end. Most of the time, these expect i_mutex to
* be held. Since this may result in an ABBA deadlock with
* pipe->inode, we have to order lock acquiry here.
*/
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 6e74b117aaf..30ebde490f7 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -106,6 +106,7 @@ void udf_clear_inode(struct inode *inode)
udf_truncate_tail_extent(inode);
unlock_kernel();
write_inode_now(inode, 0);
+ invalidate_inode_buffers(inode);
}
iinfo = UDF_I(inode);
kfree(iinfo->i_ext.i_data);
diff --git a/fs/vfat/Makefile b/fs/vfat/Makefile
deleted file mode 100644
index 40f2798a4f0..00000000000
--- a/fs/vfat/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for the linux vfat-filesystem routines.
-#
-
-obj-$(CONFIG_VFAT_FS) += vfat.o
-
-vfat-y := namei.o
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index 9e561a9cefc..a11a8390bf6 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -1566,11 +1566,14 @@ xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno)
int nmap, error, w, count, c, got, i, mapi;
xfs_trans_t *tp;
xfs_mount_t *mp;
+ xfs_drfsbno_t nblks;
dp = args->dp;
mp = dp->i_mount;
w = args->whichfork;
tp = args->trans;
+ nblks = dp->i_d.di_nblocks;
+
/*
* For new directories adjust the file offset and block count.
*/
@@ -1647,6 +1650,8 @@ xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno)
}
if (mapp != &map)
kmem_free(mapp);
+ /* account for newly allocated blocks in reserved blocks total */
+ args->total -= dp->i_d.di_nblocks - nblks;
*new_blkno = (xfs_dablk_t)bno;
return 0;
}
diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c
index 80e0dc51361..1afb12278b8 100644
--- a/fs/xfs/xfs_dir2.c
+++ b/fs/xfs/xfs_dir2.c
@@ -525,11 +525,13 @@ xfs_dir2_grow_inode(
xfs_mount_t *mp;
int nmap; /* number of bmap entries */
xfs_trans_t *tp;
+ xfs_drfsbno_t nblks;
xfs_dir2_trace_args_s("grow_inode", args, space);
dp = args->dp;
tp = args->trans;
mp = dp->i_mount;
+ nblks = dp->i_d.di_nblocks;
/*
* Set lowest possible block in the space requested.
*/
@@ -622,7 +624,11 @@ xfs_dir2_grow_inode(
*/
if (mapp != &map)
kmem_free(mapp);
+
+ /* account for newly allocated blocks in reserved blocks total */
+ args->total -= dp->i_d.di_nblocks - nblks;
*dbp = xfs_dir2_da_to_db(mp, (xfs_dablk_t)bno);
+
/*
* Update file's size if this is the data space and it grew.
*/
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index dbd9cef852e..a391b955df0 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1414,7 +1414,7 @@ xfs_itruncate_start(
mp = ip->i_mount;
/* wait for the completion of any pending DIOs */
- if (new_size < ip->i_size)
+ if (new_size == 0 || new_size < ip->i_size)
vn_iowait(ip);
/*
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 0b02c644355..3608a0f0a5f 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -563,6 +563,11 @@ xfs_log_mount(
}
mp->m_log = xlog_alloc_log(mp, log_target, blk_offset, num_bblks);
+ if (!mp->m_log) {
+ cmn_err(CE_WARN, "XFS: Log allocation failed: No memory!");
+ error = ENOMEM;
+ goto out;
+ }
/*
* Initialize the AIL now we have a log.
@@ -601,6 +606,7 @@ xfs_log_mount(
return 0;
error:
xfs_log_unmount_dealloc(mp);
+out:
return error;
} /* xfs_log_mount */
@@ -1217,7 +1223,9 @@ xlog_alloc_log(xfs_mount_t *mp,
int i;
int iclogsize;
- log = (xlog_t *)kmem_zalloc(sizeof(xlog_t), KM_SLEEP);
+ log = kmem_zalloc(sizeof(xlog_t), KM_MAYFAIL);
+ if (!log)
+ return NULL;
log->l_mp = mp;
log->l_targ = log_target;
@@ -1249,6 +1257,8 @@ xlog_alloc_log(xfs_mount_t *mp,
xlog_get_iclog_buffer_size(mp, log);
bp = xfs_buf_get_empty(log->l_iclog_size, mp->m_logdev_targp);
+ if (!bp)
+ goto out_free_log;
XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone);
XFS_BUF_SET_BDSTRAT_FUNC(bp, xlog_bdstrat_cb);
XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1);
@@ -1275,13 +1285,17 @@ xlog_alloc_log(xfs_mount_t *mp,
iclogsize = log->l_iclog_size;
ASSERT(log->l_iclog_size >= 4096);
for (i=0; i < log->l_iclog_bufs; i++) {
- *iclogp = (xlog_in_core_t *)
- kmem_zalloc(sizeof(xlog_in_core_t), KM_SLEEP);
+ *iclogp = kmem_zalloc(sizeof(xlog_in_core_t), KM_MAYFAIL);
+ if (!*iclogp)
+ goto out_free_iclog;
+
iclog = *iclogp;
iclog->ic_prev = prev_iclog;
prev_iclog = iclog;
bp = xfs_buf_get_noaddr(log->l_iclog_size, mp->m_logdev_targp);
+ if (!bp)
+ goto out_free_iclog;
if (!XFS_BUF_CPSEMA(bp))
ASSERT(0);
XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone);
@@ -1323,6 +1337,25 @@ xlog_alloc_log(xfs_mount_t *mp,
log->l_iclog->ic_prev = prev_iclog; /* re-write 1st prev ptr */
return log;
+
+out_free_iclog:
+ for (iclog = log->l_iclog; iclog; iclog = prev_iclog) {
+ prev_iclog = iclog->ic_next;
+ if (iclog->ic_bp) {
+ sv_destroy(&iclog->ic_force_wait);
+ sv_destroy(&iclog->ic_write_wait);
+ xfs_buf_free(iclog->ic_bp);
+ xlog_trace_iclog_dealloc(iclog);
+ }
+ kmem_free(iclog);
+ }
+ spinlock_destroy(&log->l_icloglock);
+ spinlock_destroy(&log->l_grant_lock);
+ xlog_trace_loggrant_dealloc(log);
+ xfs_buf_free(log->l_xbuf);
+out_free_log:
+ kmem_free(log);
+ return NULL;
} /* xlog_alloc_log */
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 82d46ce69d5..70e3ba32e6b 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -1419,7 +1419,13 @@ xlog_recover_add_to_trans(
return 0;
item = trans->r_itemq;
if (item == NULL) {
- ASSERT(*(uint *)dp == XFS_TRANS_HEADER_MAGIC);
+ /* we need to catch log corruptions here */
+ if (*(uint *)dp != XFS_TRANS_HEADER_MAGIC) {
+ xlog_warn("XFS: xlog_recover_add_to_trans: "
+ "bad header magic number");
+ ASSERT(0);
+ return XFS_ERROR(EIO);
+ }
if (len == sizeof(xfs_trans_header_t))
xlog_recover_add_item(&trans->r_itemq);
memcpy(&trans->r_theader, dp, len); /* d, s, l */
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index a4503f5e949..15f5dd22fbb 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1245,6 +1245,9 @@ xfs_unmountfs(
XFS_QM_DQPURGEALL(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING);
+ if (mp->m_quotainfo)
+ XFS_QM_DONE(mp);
+
/*
* Flush out the log synchronously so that we know for sure
* that nothing is pinned. This is important because bflush()
@@ -1297,8 +1300,6 @@ xfs_unmountfs(
xfs_errortag_clearall(mp, 0);
#endif
xfs_free_perag(mp);
- if (mp->m_quotainfo)
- XFS_QM_DONE(mp);
}
STATIC void