diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-06-11 23:31:52 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-06-11 23:31:52 +0200 |
commit | 0d5959723e1db3fd7323c198a50c16cecf96c7a9 (patch) | |
tree | 802b623fff261ebcbbddadf84af5524398364a18 /fs/ext4/super.c | |
parent | 62fdac5913f71f8f200bd2c9bd59a02e9a1498e9 (diff) | |
parent | 512626a04e72aca60effe111fa0333ed0b195d21 (diff) |
Merge branch 'linus' into x86/mce3
Conflicts:
arch/x86/kernel/cpu/mcheck/mce_64.c
arch/x86/kernel/irq.c
Merge reason: Resolve the conflicts above.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r-- | fs/ext4/super.c | 833 |
1 files changed, 440 insertions, 393 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 2958f4e6f22..f016707597a 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -20,6 +20,7 @@ #include <linux/string.h> #include <linux/fs.h> #include <linux/time.h> +#include <linux/vmalloc.h> #include <linux/jbd2.h> #include <linux/slab.h> #include <linux/init.h> @@ -45,16 +46,20 @@ #include "ext4_jbd2.h" #include "xattr.h" #include "acl.h" -#include "namei.h" -#include "group.h" + +static int default_mb_history_length = 1000; + +module_param_named(default_mb_history_length, default_mb_history_length, + int, 0644); +MODULE_PARM_DESC(default_mb_history_length, + "Default number of entries saved for mb_history"); struct proc_dir_entry *ext4_proc_root; static struct kset *ext4_kset; static int ext4_load_journal(struct super_block *, struct ext4_super_block *, unsigned long journal_devnum); -static int ext4_commit_super(struct super_block *sb, - struct ext4_super_block *es, int sync); +static int ext4_commit_super(struct super_block *sb, int sync); static void ext4_mark_recovery_complete(struct super_block *sb, struct ext4_super_block *es); static void ext4_clear_journal_err(struct super_block *sb, @@ -74,7 +79,7 @@ ext4_fsblk_t ext4_block_bitmap(struct super_block *sb, { return le32_to_cpu(bg->bg_block_bitmap_lo) | (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ? - (ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0); + (ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0); } ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb, @@ -82,7 +87,7 @@ ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb, { return le32_to_cpu(bg->bg_inode_bitmap_lo) | (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ? - (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0); + (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0); } ext4_fsblk_t ext4_inode_table(struct super_block *sb, @@ -90,7 +95,7 @@ ext4_fsblk_t ext4_inode_table(struct super_block *sb, { return le32_to_cpu(bg->bg_inode_table_lo) | (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ? - (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0); + (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0); } __u32 ext4_free_blks_count(struct super_block *sb, @@ -98,7 +103,7 @@ __u32 ext4_free_blks_count(struct super_block *sb, { return le16_to_cpu(bg->bg_free_blocks_count_lo) | (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ? - (__u32)le16_to_cpu(bg->bg_free_blocks_count_hi) << 16 : 0); + (__u32)le16_to_cpu(bg->bg_free_blocks_count_hi) << 16 : 0); } __u32 ext4_free_inodes_count(struct super_block *sb, @@ -106,7 +111,7 @@ __u32 ext4_free_inodes_count(struct super_block *sb, { return le16_to_cpu(bg->bg_free_inodes_count_lo) | (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ? - (__u32)le16_to_cpu(bg->bg_free_inodes_count_hi) << 16 : 0); + (__u32)le16_to_cpu(bg->bg_free_inodes_count_hi) << 16 : 0); } __u32 ext4_used_dirs_count(struct super_block *sb, @@ -114,7 +119,7 @@ __u32 ext4_used_dirs_count(struct super_block *sb, { return le16_to_cpu(bg->bg_used_dirs_count_lo) | (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ? - (__u32)le16_to_cpu(bg->bg_used_dirs_count_hi) << 16 : 0); + (__u32)le16_to_cpu(bg->bg_used_dirs_count_hi) << 16 : 0); } __u32 ext4_itable_unused_count(struct super_block *sb, @@ -122,7 +127,7 @@ __u32 ext4_itable_unused_count(struct super_block *sb, { return le16_to_cpu(bg->bg_itable_unused_lo) | (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ? - (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0); + (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0); } void ext4_block_bitmap_set(struct super_block *sb, @@ -202,8 +207,7 @@ handle_t *ext4_journal_start_sb(struct super_block *sb, int nblocks) journal = EXT4_SB(sb)->s_journal; if (journal) { if (is_journal_aborted(journal)) { - ext4_abort(sb, __func__, - "Detected aborted journal"); + ext4_abort(sb, __func__, "Detected aborted journal"); return ERR_PTR(-EROFS); } return jbd2_journal_start(journal, nblocks); @@ -302,10 +306,10 @@ static void ext4_handle_error(struct super_block *sb) jbd2_journal_abort(journal, -EIO); } if (test_opt(sb, ERRORS_RO)) { - printk(KERN_CRIT "Remounting filesystem read-only\n"); + ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only"); sb->s_flags |= MS_RDONLY; } - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); if (test_opt(sb, ERRORS_PANIC)) panic("EXT4-fs (device %s): panic forced after error\n", sb->s_id); @@ -395,8 +399,6 @@ void ext4_abort(struct super_block *sb, const char *function, { va_list args; - printk(KERN_CRIT "ext4_abort called.\n"); - va_start(args, fmt); printk(KERN_CRIT "EXT4-fs error (device %s): %s: ", sb->s_id, function); vprintk(fmt, args); @@ -409,7 +411,7 @@ void ext4_abort(struct super_block *sb, const char *function, if (sb->s_flags & MS_RDONLY) return; - printk(KERN_CRIT "Remounting filesystem read-only\n"); + ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only"); EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS; sb->s_flags |= MS_RDONLY; EXT4_SB(sb)->s_mount_opt |= EXT4_MOUNT_ABORT; @@ -417,6 +419,18 @@ void ext4_abort(struct super_block *sb, const char *function, jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO); } +void ext4_msg (struct super_block * sb, const char *prefix, + const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + printk("%sEXT4-fs (%s): ", prefix, sb->s_id); + vprintk(fmt, args); + printk("\n"); + va_end(args); +} + void ext4_warning(struct super_block *sb, const char *function, const char *fmt, ...) { @@ -431,7 +445,7 @@ void ext4_warning(struct super_block *sb, const char *function, } void ext4_grp_locked_error(struct super_block *sb, ext4_group_t grp, - const char *function, const char *fmt, ...) + const char *function, const char *fmt, ...) __releases(bitlock) __acquires(bitlock) { @@ -447,7 +461,7 @@ __acquires(bitlock) if (test_opt(sb, ERRORS_CONT)) { EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS; es->s_state |= cpu_to_le16(EXT4_ERROR_FS); - ext4_commit_super(sb, es, 0); + ext4_commit_super(sb, 0); return; } ext4_unlock_group(sb, grp); @@ -467,7 +481,6 @@ __acquires(bitlock) return; } - void ext4_update_dynamic_rev(struct super_block *sb) { struct ext4_super_block *es = EXT4_SB(sb)->s_es; @@ -496,7 +509,7 @@ void ext4_update_dynamic_rev(struct super_block *sb) /* * Open the external journal device */ -static struct block_device *ext4_blkdev_get(dev_t dev) +static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb) { struct block_device *bdev; char b[BDEVNAME_SIZE]; @@ -507,7 +520,7 @@ static struct block_device *ext4_blkdev_get(dev_t dev) return bdev; fail: - printk(KERN_ERR "EXT4-fs: failed to open journal device %s: %ld\n", + ext4_msg(sb, KERN_ERR, "failed to open journal device %s: %ld", __bdevname(dev, b), PTR_ERR(bdev)); return NULL; } @@ -543,8 +556,8 @@ static void dump_orphan_list(struct super_block *sb, struct ext4_sb_info *sbi) { struct list_head *l; - printk(KERN_ERR "sb orphan head is %d\n", - le32_to_cpu(sbi->s_es->s_last_orphan)); + ext4_msg(sb, KERN_ERR, "sb orphan head is %d", + le32_to_cpu(sbi->s_es->s_last_orphan)); printk(KERN_ERR "sb_info orphan list:\n"); list_for_each(l, &sbi->s_orphan) { @@ -563,6 +576,7 @@ static void ext4_put_super(struct super_block *sb) struct ext4_super_block *es = sbi->s_es; int i, err; + ext4_release_system_zone(sb); ext4_mb_release(sb); ext4_ext_release(sb); ext4_xattr_put_super(sb); @@ -576,7 +590,7 @@ static void ext4_put_super(struct super_block *sb) 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); - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); } if (sbi->s_proc) { remove_proc_entry(sb->s_id, ext4_proc_root); @@ -586,7 +600,10 @@ static void ext4_put_super(struct super_block *sb) for (i = 0; i < sbi->s_gdb_count; i++) brelse(sbi->s_group_desc[i]); kfree(sbi->s_group_desc); - kfree(sbi->s_flex_groups); + if (is_vmalloc_addr(sbi->s_flex_groups)) + vfree(sbi->s_flex_groups); + else + kfree(sbi->s_flex_groups); percpu_counter_destroy(&sbi->s_freeblocks_counter); percpu_counter_destroy(&sbi->s_freeinodes_counter); percpu_counter_destroy(&sbi->s_dirs_counter); @@ -629,7 +646,6 @@ static void ext4_put_super(struct super_block *sb) lock_kernel(); kfree(sbi->s_blockgroup_lock); kfree(sbi); - return; } static struct kmem_cache *ext4_inode_cachep; @@ -644,6 +660,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) ei = kmem_cache_alloc(ext4_inode_cachep, GFP_NOFS); if (!ei) return NULL; + #ifdef CONFIG_EXT4_FS_POSIX_ACL ei->i_acl = EXT4_ACL_NOT_CACHED; ei->i_default_acl = EXT4_ACL_NOT_CACHED; @@ -664,14 +681,16 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) ei->i_allocated_meta_blocks = 0; ei->i_delalloc_reserved_flag = 0; spin_lock_init(&(ei->i_block_reservation_lock)); + return &ei->vfs_inode; } static void ext4_destroy_inode(struct inode *inode) { if (!list_empty(&(EXT4_I(inode)->i_orphan))) { - printk("EXT4 Inode %p: orphan list check failed!\n", - EXT4_I(inode)); + ext4_msg(inode->i_sb, KERN_ERR, + "Inode %lu (%p): orphan list check failed!", + inode->i_ino, EXT4_I(inode)); print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 16, 4, EXT4_I(inode), sizeof(struct ext4_inode_info), true); @@ -870,12 +889,12 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) seq_puts(seq, ",noauto_da_alloc"); ext4_show_quota_options(seq, sb); + return 0; } - static struct inode *ext4_nfs_get_inode(struct super_block *sb, - u64 ino, u32 generation) + u64 ino, u32 generation) { struct inode *inode; @@ -904,14 +923,14 @@ static struct inode *ext4_nfs_get_inode(struct super_block *sb, } static struct dentry *ext4_fh_to_dentry(struct super_block *sb, struct fid *fid, - int fh_len, int fh_type) + int fh_len, int fh_type) { return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ext4_nfs_get_inode); } static struct dentry *ext4_fh_to_parent(struct super_block *sb, struct fid *fid, - int fh_len, int fh_type) + int fh_len, int fh_type) { return generic_fh_to_parent(sb, fid, fh_len, fh_type, ext4_nfs_get_inode); @@ -923,7 +942,8 @@ static struct dentry *ext4_fh_to_parent(struct super_block *sb, struct fid *fid, * which would prevent try_to_free_buffers() from freeing them, we must use * jbd2 layer's try_to_free_buffers() function to release them. */ -static int bdev_try_to_free_page(struct super_block *sb, struct page *page, gfp_t wait) +static int bdev_try_to_free_page(struct super_block *sb, struct page *page, + gfp_t wait) { journal_t *journal = EXT4_SB(sb)->s_journal; @@ -992,7 +1012,6 @@ static const struct super_operations ext4_sops = { .dirty_inode = ext4_dirty_inode, .delete_inode = ext4_delete_inode, .put_super = ext4_put_super, - .write_super = ext4_write_super, .sync_fs = ext4_sync_fs, .freeze_fs = ext4_freeze, .unfreeze_fs = ext4_unfreeze, @@ -1007,6 +1026,25 @@ static const struct super_operations ext4_sops = { .bdev_try_to_free_page = bdev_try_to_free_page, }; +static const struct super_operations ext4_nojournal_sops = { + .alloc_inode = ext4_alloc_inode, + .destroy_inode = ext4_destroy_inode, + .write_inode = ext4_write_inode, + .dirty_inode = ext4_dirty_inode, + .delete_inode = ext4_delete_inode, + .write_super = ext4_write_super, + .put_super = ext4_put_super, + .statfs = ext4_statfs, + .remount_fs = ext4_remount, + .clear_inode = ext4_clear_inode, + .show_options = ext4_show_options, +#ifdef CONFIG_QUOTA + .quota_read = ext4_quota_read, + .quota_write = ext4_quota_write, +#endif + .bdev_try_to_free_page = bdev_try_to_free_page, +}; + static const struct export_operations ext4_export_ops = { .fh_to_dentry = ext4_fh_to_dentry, .fh_to_parent = ext4_fh_to_parent, @@ -1023,12 +1061,13 @@ enum { Opt_journal_update, Opt_journal_dev, Opt_journal_checksum, Opt_journal_async_commit, Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback, - Opt_data_err_abort, Opt_data_err_ignore, + Opt_data_err_abort, Opt_data_err_ignore, Opt_mb_history_length, Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err, Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version, Opt_stripe, Opt_delalloc, Opt_nodelalloc, + Opt_block_validity, Opt_noblock_validity, Opt_inode_readahead_blks, Opt_journal_ioprio }; @@ -1069,6 +1108,7 @@ static const match_table_t tokens = { {Opt_data_writeback, "data=writeback"}, {Opt_data_err_abort, "data_err=abort"}, {Opt_data_err_ignore, "data_err=ignore"}, + {Opt_mb_history_length, "mb_history_length=%u"}, {Opt_offusrjquota, "usrjquota="}, {Opt_usrjquota, "usrjquota=%s"}, {Opt_offgrpjquota, "grpjquota="}, @@ -1087,6 +1127,8 @@ static const match_table_t tokens = { {Opt_resize, "resize"}, {Opt_delalloc, "delalloc"}, {Opt_nodelalloc, "nodelalloc"}, + {Opt_block_validity, "block_validity"}, + {Opt_noblock_validity, "noblock_validity"}, {Opt_inode_readahead_blks, "inode_readahead_blks=%u"}, {Opt_journal_ioprio, "journal_ioprio=%u"}, {Opt_auto_da_alloc, "auto_da_alloc=%u"}, @@ -1102,8 +1144,9 @@ static ext4_fsblk_t get_sb_block(void **data) if (!options || strncmp(options, "sb=", 3) != 0) return 1; /* Default location */ + options += 3; - /*todo: use simple_strtoll with >32bit ext4 */ + /* TODO: use simple_strtoll with >32bit ext4 */ sb_block = simple_strtoul(options, &options, 0); if (*options && *options != ',') { printk(KERN_ERR "EXT4-fs: Invalid sb specification: %s\n", @@ -1113,6 +1156,7 @@ static ext4_fsblk_t get_sb_block(void **data) if (*options == ',') options++; *data = (void *) options; + return sb_block; } @@ -1206,8 +1250,7 @@ static int parse_options(char *options, struct super_block *sb, #else case Opt_user_xattr: case Opt_nouser_xattr: - printk(KERN_ERR "EXT4 (no)user_xattr options " - "not supported\n"); + ext4_msg(sb, KERN_ERR, "(no)user_xattr options not supported"); break; #endif #ifdef CONFIG_EXT4_FS_POSIX_ACL @@ -1220,8 +1263,7 @@ static int parse_options(char *options, struct super_block *sb, #else case Opt_acl: case Opt_noacl: - printk(KERN_ERR "EXT4 (no)acl options " - "not supported\n"); + ext4_msg(sb, KERN_ERR, "(no)acl options not supported"); break; #endif case Opt_journal_update: @@ -1231,16 +1273,16 @@ static int parse_options(char *options, struct super_block *sb, user to specify an existing inode to be the journal file. */ if (is_remount) { - printk(KERN_ERR "EXT4-fs: cannot specify " - "journal on remount\n"); + ext4_msg(sb, KERN_ERR, + "Cannot specify journal on remount"); return 0; } set_opt(sbi->s_mount_opt, UPDATE_JOURNAL); break; case Opt_journal_dev: if (is_remount) { - printk(KERN_ERR "EXT4-fs: cannot specify " - "journal on remount\n"); + ext4_msg(sb, KERN_ERR, + "Cannot specify journal on remount"); return 0; } if (match_int(&args[0], &option)) @@ -1294,9 +1336,8 @@ static int parse_options(char *options, struct super_block *sb, if (is_remount) { if ((sbi->s_mount_opt & EXT4_MOUNT_DATA_FLAGS) != data_opt) { - printk(KERN_ERR - "EXT4-fs: cannot change data " - "mode on remount\n"); + ext4_msg(sb, KERN_ERR, + "Cannot change data mode on remount"); return 0; } } else { @@ -1310,6 +1351,13 @@ static int parse_options(char *options, struct super_block *sb, case Opt_data_err_ignore: clear_opt(sbi->s_mount_opt, DATA_ERR_ABORT); break; + case Opt_mb_history_length: + if (match_int(&args[0], &option)) + return 0; + if (option < 0) + return 0; + sbi->s_mb_history_max = option; + break; #ifdef CONFIG_QUOTA case Opt_usrjquota: qtype = USRQUOTA; @@ -1319,31 +1367,31 @@ static int parse_options(char *options, struct super_block *sb, set_qf_name: if (sb_any_quota_loaded(sb) && !sbi->s_qf_names[qtype]) { - printk(KERN_ERR - "EXT4-fs: Cannot change journaled " - "quota options when quota turned on.\n"); + ext4_msg(sb, KERN_ERR, + "Cannot change journaled " + "quota options when quota turned on"); return 0; } qname = match_strdup(&args[0]); if (!qname) { - printk(KERN_ERR - "EXT4-fs: not enough memory for " - "storing quotafile name.\n"); + ext4_msg(sb, KERN_ERR, + "Not enough memory for " + "storing quotafile name"); return 0; } if (sbi->s_qf_names[qtype] && strcmp(sbi->s_qf_names[qtype], qname)) { - printk(KERN_ERR - "EXT4-fs: %s quota file already " - "specified.\n", QTYPE2NAME(qtype)); + ext4_msg(sb, KERN_ERR, + "%s quota file already " + "specified", QTYPE2NAME(qtype)); kfree(qname); return 0; } sbi->s_qf_names[qtype] = qname; if (strchr(sbi->s_qf_names[qtype], '/')) { - printk(KERN_ERR - "EXT4-fs: quotafile must be on " - "filesystem root.\n"); + ext4_msg(sb, KERN_ERR, + "quotafile must be on " + "filesystem root"); kfree(sbi->s_qf_names[qtype]); sbi->s_qf_names[qtype] = NULL; return 0; @@ -1358,9 +1406,9 @@ set_qf_name: clear_qf_name: if (sb_any_quota_loaded(sb) && sbi->s_qf_names[qtype]) { - printk(KERN_ERR "EXT4-fs: Cannot change " + ext4_msg(sb, KERN_ERR, "Cannot change " "journaled quota options when " - "quota turned on.\n"); + "quota turned on"); return 0; } /* @@ -1377,9 +1425,9 @@ clear_qf_name: set_qf_format: if (sb_any_quota_loaded(sb) && sbi->s_jquota_fmt != qfmt) { - printk(KERN_ERR "EXT4-fs: Cannot change " + ext4_msg(sb, KERN_ERR, "Cannot change " "journaled quota options when " - "quota turned on.\n"); + "quota turned on"); return 0; } sbi->s_jquota_fmt = qfmt; @@ -1395,8 +1443,8 @@ set_qf_format: break; case Opt_noquota: if (sb_any_quota_loaded(sb)) { - printk(KERN_ERR "EXT4-fs: Cannot change quota " - "options when quota turned on.\n"); + ext4_msg(sb, KERN_ERR, "Cannot change quota " + "options when quota turned on"); return 0; } clear_opt(sbi->s_mount_opt, QUOTA); @@ -1407,8 +1455,8 @@ set_qf_format: case Opt_quota: case Opt_usrquota: case Opt_grpquota: - printk(KERN_ERR - "EXT4-fs: quota options not supported.\n"); + ext4_msg(sb, KERN_ERR, + "quota options not supported"); break; case Opt_usrjquota: case Opt_grpjquota: @@ -1416,9 +1464,8 @@ set_qf_format: case Opt_offgrpjquota: case Opt_jqfmt_vfsold: case Opt_jqfmt_vfsv0: - printk(KERN_ERR - "EXT4-fs: journaled quota options not " - "supported.\n"); + ext4_msg(sb, KERN_ERR, + "journaled quota options not supported"); break; case Opt_noquota: break; @@ -1443,8 +1490,9 @@ set_qf_format: break; case Opt_resize: if (!is_remount) { - printk("EXT4-fs: resize option only available " - "for remount\n"); + ext4_msg(sb, KERN_ERR, + "resize option only available " + "for remount"); return 0; } if (match_int(&args[0], &option) != 0) @@ -1474,14 +1522,21 @@ set_qf_format: case Opt_delalloc: set_opt(sbi->s_mount_opt, DELALLOC); break; + case Opt_block_validity: + set_opt(sbi->s_mount_opt, BLOCK_VALIDITY); + break; + case Opt_noblock_validity: + clear_opt(sbi->s_mount_opt, BLOCK_VALIDITY); + break; case Opt_inode_readahead_blks: if (match_int(&args[0], &option)) return 0; if (option < 0 || option > (1 << 30)) return 0; - if (option & (option - 1)) { - printk(KERN_ERR "EXT4-fs: inode_readahead_blks" - " must be a power of 2\n"); + if (!is_power_of_2(option)) { + ext4_msg(sb, KERN_ERR, + "EXT4-fs: inode_readahead_blks" + " must be a power of 2"); return 0; } sbi->s_inode_readahead_blks = option; @@ -1508,9 +1563,9 @@ set_qf_format: set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC); break; default: - printk(KERN_ERR - "EXT4-fs: Unrecognized mount option \"%s\" " - "or missing value\n", p); + ext4_msg(sb, KERN_ERR, + "Unrecognized mount option \"%s\" " + "or missing value", p); return 0; } } @@ -1528,21 +1583,21 @@ set_qf_format: (sbi->s_mount_opt & EXT4_MOUNT_GRPQUOTA)) || (sbi->s_qf_names[GRPQUOTA] && (sbi->s_mount_opt & EXT4_MOUNT_USRQUOTA))) { - printk(KERN_ERR "EXT4-fs: old and new quota " - "format mixing.\n"); + ext4_msg(sb, KERN_ERR, "old and new quota " + "format mixing"); return 0; } if (!sbi->s_jquota_fmt) { - printk(KERN_ERR "EXT4-fs: journaled quota format " - "not specified.\n"); + ext4_msg(sb, KERN_ERR, "journaled quota format " + "not specified"); return 0; } } else { if (sbi->s_jquota_fmt) { - printk(KERN_ERR "EXT4-fs: journaled quota format " + ext4_msg(sb, KERN_ERR, "journaled quota format " "specified with no journaling " - "enabled.\n"); + "enabled"); return 0; } } @@ -1557,32 +1612,32 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es, int res = 0; if (le32_to_cpu(es->s_rev_level) > EXT4_MAX_SUPP_REV) { - printk(KERN_ERR "EXT4-fs warning: revision level too high, " - "forcing read-only mode\n"); + ext4_msg(sb, KERN_ERR, "revision level too high, " + "forcing read-only mode"); res = MS_RDONLY; } if (read_only) return res; if (!(sbi->s_mount_state & EXT4_VALID_FS)) - printk(KERN_WARNING "EXT4-fs warning: mounting unchecked fs, " - "running e2fsck is recommended\n"); + ext4_msg(sb, KERN_WARNING, "warning: mounting unchecked fs, " + "running e2fsck is recommended"); else if ((sbi->s_mount_state & EXT4_ERROR_FS)) - printk(KERN_WARNING - "EXT4-fs warning: mounting fs with errors, " - "running e2fsck is recommended\n"); + ext4_msg(sb, KERN_WARNING, + "warning: mounting fs with errors, " + "running e2fsck is recommended"); else if ((__s16) le16_to_cpu(es->s_max_mnt_count) >= 0 && le16_to_cpu(es->s_mnt_count) >= (unsigned short) (__s16) le16_to_cpu(es->s_max_mnt_count)) - printk(KERN_WARNING - "EXT4-fs warning: maximal mount count reached, " - "running e2fsck is recommended\n"); + ext4_msg(sb, KERN_WARNING, + "warning: maximal mount count reached, " + "running e2fsck is recommended"); else if (le32_to_cpu(es->s_checkinterval) && (le32_to_cpu(es->s_lastcheck) + le32_to_cpu(es->s_checkinterval) <= get_seconds())) - printk(KERN_WARNING - "EXT4-fs warning: checktime reached, " - "running e2fsck is recommended\n"); - if (!sbi->s_journal) + ext4_msg(sb, KERN_WARNING, + "warning: checktime reached, " + "running e2fsck is recommended"); + if (!sbi->s_journal) es->s_state &= cpu_to_le16(~EXT4_VALID_FS); if (!(__s16) le16_to_cpu(es->s_max_mnt_count)) es->s_max_mnt_count = cpu_to_le16(EXT4_DFL_MAX_MNT_COUNT); @@ -1592,7 +1647,7 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es, if (sbi->s_journal) EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); if (test_opt(sb, DEBUG)) printk(KERN_INFO "[EXT4 FS bs=%lu, gc=%u, " "bpg=%lu, ipg=%lu, mo=%04lx]\n", @@ -1603,11 +1658,11 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es, sbi->s_mount_opt); if (EXT4_SB(sb)->s_journal) { - printk(KERN_INFO "EXT4 FS on %s, %s journal on %s\n", - sb->s_id, EXT4_SB(sb)->s_journal->j_inode ? "internal" : + ext4_msg(sb, KERN_INFO, "%s journal on %s", + EXT4_SB(sb)->s_journal->j_inode ? "internal" : "external", EXT4_SB(sb)->s_journal->j_devname); } else { - printk(KERN_INFO "EXT4 FS on %s, no journal\n", sb->s_id); + ext4_msg(sb, KERN_INFO, "no journal"); } return res; } @@ -1616,10 +1671,10 @@ static int ext4_fill_flex_info(struct super_block *sb) { struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_group_desc *gdp = NULL; - struct buffer_head *bh; ext4_group_t flex_group_count; ext4_group_t flex_group; int groups_per_flex = 0; + size_t size; int i; if (!sbi->s_es->s_log_groups_per_flex) { @@ -1634,16 +1689,21 @@ static int ext4_fill_flex_info(struct super_block *sb) flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) + ((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); + size = flex_group_count * sizeof(struct flex_groups); + sbi->s_flex_groups = kzalloc(size, GFP_KERNEL); + if (sbi->s_flex_groups == NULL) { + sbi->s_flex_groups = vmalloc(size); + if (sbi->s_flex_groups) + memset(sbi->s_flex_groups, 0, size); + } if (sbi->s_flex_groups == NULL) { - printk(KERN_ERR "EXT4-fs: not enough memory for " - "%u flex groups\n", flex_group_count); + ext4_msg(sb, KERN_ERR, "not enough memory for " + "%u flex groups", flex_group_count); goto failed; } for (i = 0; i < sbi->s_groups_count; i++) { - gdp = ext4_get_group_desc(sb, i, &bh); + gdp = ext4_get_group_desc(sb, i, NULL); flex_group = ext4_flex_group(sbi, i); atomic_set(&sbi->s_flex_groups[flex_group].free_inodes, @@ -1724,44 +1784,44 @@ static int ext4_check_descriptors(struct super_block *sb) block_bitmap = ext4_block_bitmap(sb, gdp); if (block_bitmap < first_block || block_bitmap > last_block) { - printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: " + ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " "Block bitmap for group %u not in group " - "(block %llu)!\n", i, block_bitmap); + "(block %llu)!", i, block_bitmap); return 0; } inode_bitmap = ext4_inode_bitmap(sb, gdp); if (inode_bitmap < first_block || inode_bitmap > last_block) { - printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: " + ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " "Inode bitmap for group %u not in group " - "(block %llu)!\n", i, inode_bitmap); + "(block %llu)!", i, inode_bitmap); return 0; } inode_table = ext4_inode_table(sb, gdp); if (inode_table < first_block || inode_table + sbi->s_itb_per_group - 1 > last_block) { - printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: " + ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " "Inode table for group %u not in group " - "(block %llu)!\n", i, inode_table); + "(block %llu)!", i, inode_table); return 0; } - spin_lock(sb_bgl_lock(sbi, i)); + ext4_lock_group(sb, i); if (!ext4_group_desc_csum_verify(sbi, i, gdp)) { - printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: " - "Checksum for group %u failed (%u!=%u)\n", - i, le16_to_cpu(ext4_group_desc_csum(sbi, i, - gdp)), le16_to_cpu(gdp->bg_checksum)); + ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " + "Checksum for group %u failed (%u!=%u)", + i, le16_to_cpu(ext4_group_desc_csum(sbi, i, + gdp)), le16_to_cpu(gdp->bg_checksum)); if (!(sb->s_flags & MS_RDONLY)) { - spin_unlock(sb_bgl_lock(sbi, i)); + ext4_unlock_group(sb, i); return 0; } } - spin_unlock(sb_bgl_lock(sbi, i)); + ext4_unlock_group(sb, i); if (!flexbg_flag) first_block += EXT4_BLOCKS_PER_GROUP(sb); } ext4_free_blocks_count_set(sbi->s_es, ext4_count_free_blocks(sb)); - sbi->s_es->s_free_inodes_count = cpu_to_le32(ext4_count_free_inodes(sb)); + sbi->s_es->s_free_inodes_count =cpu_to_le32(ext4_count_free_inodes(sb)); return 1; } @@ -1796,8 +1856,8 @@ static void ext4_orphan_cleanup(struct super_block *sb, } if (bdev_read_only(sb->s_bdev)) { - printk(KERN_ERR "EXT4-fs: write access " - "unavailable, skipping orphan cleanup.\n"); + ext4_msg(sb, KERN_ERR, "write access " + "unavailable, skipping orphan cleanup"); return; } @@ -1811,8 +1871,7 @@ static void ext4_orphan_cleanup(struct super_block *sb, } if (s_flags & MS_RDONLY) { - printk(KERN_INFO "EXT4-fs: %s: orphan cleanup on readonly fs\n", - sb->s_id); + ext4_msg(sb, KERN_INFO, "orphan cleanup on readonly fs"); sb->s_flags &= ~MS_RDONLY; } #ifdef CONFIG_QUOTA @@ -1823,9 +1882,9 @@ static void ext4_orphan_cleanup(struct super_block *sb, if (EXT4_SB(sb)->s_qf_names[i]) { int ret = ext4_quota_on_mount(sb, i); if (ret < 0) - printk(KERN_ERR - "EXT4-fs: Cannot turn on journaled " - "quota: error %d\n", ret); + ext4_msg(sb, KERN_ERR, + "Cannot turn on journaled " + "quota: error %d", ret); } } #endif @@ -1842,16 +1901,16 @@ static void ext4_orphan_cleanup(struct super_block *sb, list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan); vfs_dq_init(inode); if (inode->i_nlink) { - printk(KERN_DEBUG - "%s: truncating inode %lu to %lld bytes\n", + ext4_msg(sb, KERN_DEBUG, + "%s: truncating inode %lu to %lld bytes", __func__, inode->i_ino, inode->i_size); jbd_debug(2, "truncating inode %lu to %lld bytes\n", inode->i_ino, inode->i_size); ext4_truncate(inode); nr_truncates++; } else { - printk(KERN_DEBUG - "%s: deleting unreferenced inode %lu\n", + ext4_msg(sb, KERN_DEBUG, + "%s: deleting unreferenced inode %lu", __func__, inode->i_ino); jbd_debug(2, "deleting unreferenced inode %lu\n", inode->i_ino); @@ -1863,11 +1922,11 @@ static void ext4_orphan_cleanup(struct super_block *sb, #define PLURAL(x) (x), ((x) == 1) ? "" : "s" if (nr_orphans) - printk(KERN_INFO "EXT4-fs: %s: %d orphan inode%s deleted\n", - sb->s_id, PLURAL(nr_orphans)); + ext4_msg(sb, KERN_INFO, "%d orphan inode%s deleted", + PLURAL(nr_orphans)); if (nr_truncates) - printk(KERN_INFO "EXT4-fs: %s: %d truncate%s cleaned up\n", - sb->s_id, PLURAL(nr_truncates)); + ext4_msg(sb, KERN_INFO, "%d truncate%s cleaned up", + PLURAL(nr_truncates)); #ifdef CONFIG_QUOTA /* Turn quotas off */ for (i = 0; i < MAXQUOTAS; i++) { @@ -1877,6 +1936,7 @@ static void ext4_orphan_cleanup(struct super_block *sb, #endif sb->s_flags = s_flags; /* Restore MS_RDONLY status */ } + /* * Maximal extent format file size. * Resulting logical blkno at s_maxbytes must fit in our on-disk @@ -1927,19 +1987,19 @@ static loff_t ext4_max_bitmap_size(int bits, int has_huge_files) loff_t res = EXT4_NDIR_BLOCKS; int meta_blocks; loff_t upper_limit; - /* This is calculated to be the largest file size for a - * dense, bitmapped file such that the total number of - * sectors in the file, including data and all indirect blocks, - * does not exceed 2^48 -1 - * __u32 i_blocks_lo and _u16 i_blocks_high representing the - * total number of 512 bytes blocks of the file + /* This is calculated to be the largest file size for a dense, block + * mapped file such that the file's total number of 512-byte sectors, + * including data and all indirect blocks, does not exceed (2^48 - 1). + * + * __u32 i_blocks_lo and _u16 i_blocks_high represent the total + * number of 512-byte sectors of the file. */ if (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) { /* - * !has_huge_files or CONFIG_LBD is not enabled - * implies the inode i_block represent total blocks in - * 512 bytes 32 == size of vfs inode i_blocks * 8 + * !has_huge_files or CONFIG_LBD not enabled implies that + * the inode i_block field represents total file blocks in + * 2^32 512-byte sectors == size of vfs inode i_blocks * 8 */ upper_limit = (1LL << 32) - 1; @@ -1981,7 +2041,7 @@ static loff_t ext4_max_bitmap_size(int bits, int has_huge_files) } static ext4_fsblk_t descriptor_loc(struct super_block *sb, - ext4_fsblk_t logical_sb_block, int nr) + ext4_fsblk_t logical_sb_block, int nr) { struct ext4_sb_info *sbi = EXT4_SB(sb); ext4_group_t bg, first_meta_bg; @@ -1995,6 +2055,7 @@ static ext4_fsblk_t descriptor_loc(struct super_block *sb, bg = sbi->s_desc_per_block * nr; if (ext4_bg_has_super(sb, bg)) has_super = 1; + return (has_super + ext4_group_first_block_no(sb, bg)); } @@ -2091,8 +2152,7 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a, if (parse_strtoul(buf, 0x40000000, &t)) return -EINVAL; - /* inode_readahead_blks must be a power of 2 */ - if (t & (t-1)) + if (!is_power_of_2(t)) return -EINVAL; sbi->s_inode_readahead_blks = t; @@ -2100,7 +2160,7 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a, } static ssize_t sbi_ui_show(struct ext4_attr *a, - struct ext4_sb_info *sbi, char *buf) + struct ext4_sb_info *sbi, char *buf) { unsigned int *ui = (unsigned int *) (((char *) sbi) + a->offset); @@ -2205,7 +2265,6 @@ static struct kobj_type ext4_ktype = { static int ext4_fill_super(struct super_block *sb, void *data, int silent) __releases(kernel_lock) __acquires(kernel_lock) - { struct buffer_head *bh; struct ext4_super_block *es = NULL; @@ -2256,7 +2315,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) blocksize = sb_min_blocksize(sb, EXT4_MIN_BLOCK_SIZE); if (!blocksize) { - printk(KERN_ERR "EXT4-fs: unable to set blocksize\n"); + ext4_msg(sb, KERN_ERR, "unable to set blocksize"); goto out_fail; } @@ -2272,7 +2331,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) } if (!(bh = sb_bread(sb, logical_sb_block))) { - printk(KERN_ERR "EXT4-fs: unable to read superblock\n"); + ext4_msg(sb, KERN_ERR, "unable to read superblock"); goto out_fail; } /* @@ -2321,6 +2380,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ; sbi->s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME; sbi->s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME; + sbi->s_mb_history_max = default_mb_history_length; set_opt(sbi->s_mount_opt, BARRIER); @@ -2330,7 +2390,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) */ set_opt(sbi->s_mount_opt, DELALLOC); - if (!parse_options((char *) data, sb, &journal_devnum, &journal_ioprio, NULL, 0)) goto failed_mount; @@ -2342,9 +2401,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) (EXT4_HAS_COMPAT_FEATURE(sb, ~0U) || EXT4_HAS_RO_COMPAT_FEATURE(sb, ~0U) || EXT4_HAS_INCOMPAT_FEATURE(sb, ~0U))) - printk(KERN_WARNING - "EXT4-fs warning: feature flags set on rev 0 fs, " - "running e2fsck is recommended\n"); + ext4_msg(sb, KERN_WARNING, + "feature flags set on rev 0 fs, " + "running e2fsck is recommended"); /* * Check feature flags regardless of the revision level, since we @@ -2353,16 +2412,18 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) */ features = EXT4_HAS_INCOMPAT_FEATURE(sb, ~EXT4_FEATURE_INCOMPAT_SUPP); if (features) { - printk(KERN_ERR "EXT4-fs: %s: couldn't mount because of " - "unsupported optional features (%x).\n", sb->s_id, + ext4_msg(sb, KERN_ERR, + "Couldn't mount because of " + "unsupported optional features (%x)", (le32_to_cpu(EXT4_SB(sb)->s_es->s_feature_incompat) & ~EXT4_FEATURE_INCOMPAT_SUPP)); goto failed_mount; } features = EXT4_HAS_RO_COMPAT_FEATURE(sb, ~EXT4_FEATURE_RO_COMPAT_SUPP); if (!(sb->s_flags & MS_RDONLY) && features) { - printk(KERN_ERR "EXT4-fs: %s: couldn't mount RDWR because of " - "unsupported optional features (%x).\n", sb->s_id, + ext4_msg(sb, KERN_ERR, + "Couldn't mount RDWR because of " + "unsupported optional features (%x)", (le32_to_cpu(EXT4_SB(sb)->s_es->s_feature_ro_compat) & ~EXT4_FEATURE_RO_COMPAT_SUPP)); goto failed_mount; @@ -2376,9 +2437,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) */ if (sizeof(root->i_blocks) < sizeof(u64) && !(sb->s_flags & MS_RDONLY)) { - printk(KERN_ERR "EXT4-fs: %s: Filesystem with huge " + ext4_msg(sb, KERN_ERR, "Filesystem with huge " "files cannot be mounted read-write " - "without CONFIG_LBD.\n", sb->s_id); + "without CONFIG_LBD"); goto failed_mount; } } @@ -2386,17 +2447,15 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if (blocksize < EXT4_MIN_BLOCK_SIZE || blocksize > EXT4_MAX_BLOCK_SIZE) { - printk(KERN_ERR - "EXT4-fs: Unsupported filesystem blocksize %d on %s.\n", - blocksize, sb->s_id); + ext4_msg(sb, KERN_ERR, + "Unsupported filesystem blocksize %d", blocksize); goto failed_mount; } if (sb->s_blocksize != blocksize) { - /* Validate the filesystem blocksize */ if (!sb_set_blocksize(sb, blocksize)) { - printk(KERN_ERR "EXT4-fs: bad block size %d.\n", + ext4_msg(sb, KERN_ERR, "bad block size %d", blocksize); goto failed_mount; } @@ -2406,15 +2465,15 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) offset = do_div(logical_sb_block, blocksize); bh = sb_bread(sb, logical_sb_block); if (!bh) { - printk(KERN_ERR - "EXT4-fs: Can't read superblock on 2nd try.\n"); + ext4_msg(sb, KERN_ERR, + "Can't read superblock on 2nd try"); goto failed_mount; } es = (struct ext4_super_block *)(((char *)bh->b_data) + offset); sbi->s_es = es; if (es->s_magic != cpu_to_le16(EXT4_SUPER_MAGIC)) { - printk(KERN_ERR - "EXT4-fs: Magic mismatch, very weird !\n"); + ext4_msg(sb, KERN_ERR, + "Magic mismatch, very weird!"); goto failed_mount; } } @@ -2432,30 +2491,33 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if ((sbi->s_inode_size < EXT4_GOOD_OLD_INODE_SIZE) || (!is_power_of_2(sbi->s_inode_size)) || (sbi->s_inode_size > blocksize)) { - printk(KERN_ERR - "EXT4-fs: unsupported inode size: %d\n", + ext4_msg(sb, KERN_ERR, + "unsupported inode size: %d", sbi->s_inode_size); goto failed_mount; } if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2); } + sbi->s_desc_size = le16_to_cpu(es->s_desc_size); if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) { if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT || sbi->s_desc_size > EXT4_MAX_DESC_SIZE || !is_power_of_2(sbi->s_desc_size)) { - printk(KERN_ERR - "EXT4-fs: unsupported descriptor size %lu\n", + ext4_msg(sb, KERN_ERR, + "unsupported descriptor size %lu", sbi->s_desc_size); goto failed_mount; } } else sbi->s_desc_size = EXT4_MIN_DESC_SIZE; + sbi->s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group); sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group); if (EXT4_INODE_SIZE(sb) == 0 || EXT4_INODES_PER_GROUP(sb) == 0) goto cantfind_ext4; + sbi->s_inodes_per_block = blocksize / EXT4_INODE_SIZE(sb); if (sbi->s_inodes_per_block == 0) goto cantfind_ext4; @@ -2466,6 +2528,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_mount_state = le16_to_cpu(es->s_state); sbi->s_addr_per_block_bits = ilog2(EXT4_ADDR_PER_BLOCK(sb)); sbi->s_desc_per_block_bits = ilog2(EXT4_DESC_PER_BLOCK(sb)); + for (i = 0; i < 4; i++) sbi->s_hash_seed[i] = le32_to_cpu(es->s_hash_seed[i]); sbi->s_def_hash_version = es->s_def_hash_version; @@ -2483,25 +2546,24 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) } if (sbi->s_blocks_per_group > blocksize * 8) { - printk(KERN_ERR - "EXT4-fs: #blocks per group too big: %lu\n", + ext4_msg(sb, KERN_ERR, + "#blocks per group too big: %lu", sbi->s_blocks_per_group); goto failed_mount; } if (sbi->s_inodes_per_group > blocksize * 8) { - printk(KERN_ERR - "EXT4-fs: #inodes per group too big: %lu\n", + ext4_msg(sb, KERN_ERR, + "#inodes per group too big: %lu", sbi->s_inodes_per_group); goto failed_mount; } if (ext4_blocks_count(es) > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { - printk(KERN_ERR "EXT4-fs: filesystem on %s:" - " too large to mount safely\n", sb->s_id); + ext4_msg(sb, KERN_ERR, "filesystem" + " too large to mount safely"); if (sizeof(sector_t) < 8) - printk(KERN_WARNING "EXT4-fs: CONFIG_LBD not " - "enabled\n"); + ext4_msg(sb, KERN_WARNING, "CONFIG_LBD not enabled"); goto failed_mount; } @@ -2511,21 +2573,21 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) /* check blocks count against device size */ blocks_count = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits; if (blocks_count && ext4_blocks_count(es) > blocks_count) { - printk(KERN_WARNING "EXT4-fs: bad geometry: block count %llu " - "exceeds size of device (%llu blocks)\n", + ext4_msg(sb, KERN_WARNING, "bad geometry: block count %llu " + "exceeds size of device (%llu blocks)", ext4_blocks_count(es), blocks_count); goto failed_mount; } - /* - * It makes no sense for the first data block to be beyond the end - * of the filesystem. - */ - if (le32_to_cpu(es->s_first_data_block) >= ext4_blocks_count(es)) { - printk(KERN_WARNING "EXT4-fs: bad geometry: first data" - "block %u is beyond end of filesystem (%llu)\n", - le32_to_cpu(es->s_first_data_block), - ext4_blocks_count(es)); + /* + * It makes no sense for the first data block to be beyond the end + * of the filesystem. + */ + if (le32_to_cpu(es->s_first_data_block) >= ext4_blocks_count(es)) { + ext4_msg(sb, KERN_WARNING, "bad geometry: first data" + "block %u is beyond end of filesystem (%llu)", + le32_to_cpu(es->s_first_data_block), + ext4_blocks_count(es)); goto failed_mount; } blocks_count = (ext4_blocks_count(es) - @@ -2533,9 +2595,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) EXT4_BLOCKS_PER_GROUP(sb) - 1); do_div(blocks_count, EXT4_BLOCKS_PER_GROUP(sb)); if (blocks_count > ((uint64_t)1<<32) - EXT4_DESC_PER_BLOCK(sb)) { - printk(KERN_WARNING "EXT4-fs: groups count too large: %u " + ext4_msg(sb, KERN_WARNING, "groups count too large: %u " "(block count %llu, first data block %u, " - "blocks per group %lu)\n", sbi->s_groups_count, + "blocks per group %lu)", sbi->s_groups_count, ext4_blocks_count(es), le32_to_cpu(es->s_first_data_block), EXT4_BLOCKS_PER_GROUP(sb)); @@ -2547,7 +2609,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_group_desc = kmalloc(db_count * sizeof(struct buffer_head *), GFP_KERNEL); if (sbi->s_group_desc == NULL) { - printk(KERN_ERR "EXT4-fs: not enough memory\n"); + ext4_msg(sb, KERN_ERR, "not enough memory"); goto failed_mount; } @@ -2562,21 +2624,21 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) block = descriptor_loc(sb, logical_sb_block, i); sbi->s_group_desc[i] = sb_bread(sb, block); if (!sbi->s_group_desc[i]) { - printk(KERN_ERR "EXT4-fs: " - "can't read group descriptor %d\n", i); + ext4_msg(sb, KERN_ERR, + "can't read group descriptor %d", i); db_count = i; goto failed_mount2; } } if (!ext4_check_descriptors(sb)) { - printk(KERN_ERR "EXT4-fs: group descriptors corrupted!\n"); + ext4_msg(sb, KERN_ERR, "group descriptors corrupted!"); goto failed_mount2; } if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) if (!ext4_fill_flex_info(sb)) { - printk(KERN_ERR - "EXT4-fs: unable to initialize " - "flex_bg meta info!\n"); + ext4_msg(sb, KERN_ERR, + "unable to initialize " + "flex_bg meta info!"); goto failed_mount2; } @@ -2598,7 +2660,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) err = percpu_counter_init(&sbi->s_dirtyblocks_counter, 0); } if (err) { - printk(KERN_ERR "EXT4-fs: insufficient memory\n"); + ext4_msg(sb, KERN_ERR, "insufficient memory"); goto failed_mount3; } @@ -2607,7 +2669,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) /* * set up enough so that it can read an inode */ - sb->s_op = &ext4_sops; + if (!test_opt(sb, NOLOAD) && + EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) + sb->s_op = &ext4_sops; + else + sb->s_op = &ext4_nojournal_sops; sb->s_export_op = &ext4_export_ops; sb->s_xattr = ext4_xattr_handlers; #ifdef CONFIG_QUOTA @@ -2615,6 +2681,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sb->dq_op = &ext4_quota_operations; #endif INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */ + mutex_init(&sbi->s_orphan_lock); + mutex_init(&sbi->s_resize_lock); sb->s_root = NULL; @@ -2632,13 +2700,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) goto failed_mount3; if (!(sb->s_flags & MS_RDONLY) && EXT4_SB(sb)->s_journal->j_failed_commit) { - printk(KERN_CRIT "EXT4-fs error (device %s): " + ext4_msg(sb, KERN_CRIT, "error: " "ext4_fill_super: Journal transaction " - "%u is corrupt\n", sb->s_id, + "%u is corrupt", EXT4_SB(sb)->s_journal->j_failed_commit); if (test_opt(sb, ERRORS_RO)) { - printk(KERN_CRIT - "Mounting filesystem read-only\n"); + ext4_msg(sb, KERN_CRIT, + "Mounting filesystem read-only"); sb->s_flags |= MS_RDONLY; EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS; es->s_state |= cpu_to_le16(EXT4_ERROR_FS); @@ -2646,14 +2714,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if (test_opt(sb, ERRORS_PANIC)) { EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS; es->s_state |= cpu_to_le16(EXT4_ERROR_FS); - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); goto failed_mount4; } } } else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) && EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) { - printk(KERN_ERR "EXT4-fs: required journal recovery " - "suppressed and not mounted read-only\n"); + ext4_msg(sb, KERN_ERR, "required journal recovery " + "suppressed and not mounted read-only"); goto failed_mount4; } else { clear_opt(sbi->s_mount_opt, DATA_FLAGS); @@ -2666,7 +2734,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if (ext4_blocks_count(es) > 0xffffffffULL && !jbd2_journal_set_features(EXT4_SB(sb)->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_64BIT)) { - printk(KERN_ERR "EXT4-fs: Failed to set 64-bit journal feature\n"); + ext4_msg(sb, KERN_ERR, "Failed to set 64-bit journal feature"); goto failed_mount4; } @@ -2704,8 +2772,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) case EXT4_MOUNT_WRITEBACK_DATA: if (!jbd2_journal_check_available_features (sbi->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE)) { - printk(KERN_ERR "EXT4-fs: Journal does not support " - "requested data journaling mode\n"); + ext4_msg(sb, KERN_ERR, "Journal does not support " + "requested data journaling mode"); goto failed_mount4; } default: @@ -2717,8 +2785,8 @@ no_journal: if (test_opt(sb, NOBH)) { if (!(test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)) { - printk(KERN_WARNING "EXT4-fs: Ignoring nobh option - " - "its supported only with writeback mode\n"); + ext4_msg(sb, KERN_WARNING, "Ignoring nobh option - " + "its supported only with writeback mode"); clear_opt(sbi->s_mount_opt, NOBH); } } @@ -2729,18 +2797,18 @@ no_journal: root = ext4_iget(sb, EXT4_ROOT_INO); if (IS_ERR(root)) { - printk(KERN_ERR "EXT4-fs: get root inode failed\n"); + ext4_msg(sb, KERN_ERR, "get root inode failed"); ret = PTR_ERR(root); goto failed_mount4; } if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { iput(root); - printk(KERN_ERR "EXT4-fs: corrupt root inode, run e2fsck\n"); + ext4_msg(sb, KERN_ERR, "corrupt root inode, run e2fsck"); goto failed_mount4; } sb->s_root = d_alloc_root(root); if (!sb->s_root) { - printk(KERN_ERR "EXT4-fs: get root dentry failed\n"); + ext4_msg(sb, KERN_ERR, "get root dentry failed"); iput(root); ret = -ENOMEM; goto failed_mount4; @@ -2769,22 +2837,29 @@ no_journal: sbi->s_inode_size) { sbi->s_want_extra_isize = sizeof(struct ext4_inode) - EXT4_GOOD_OLD_INODE_SIZE; - printk(KERN_INFO "EXT4-fs: required extra inode space not" - "available.\n"); + ext4_msg(sb, KERN_INFO, "required extra inode space not" + "available"); } if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) { - printk(KERN_WARNING "EXT4-fs: Ignoring delalloc option - " - "requested data journaling mode\n"); + ext4_msg(sb, KERN_WARNING, "Ignoring delalloc option - " + "requested data journaling mode"); clear_opt(sbi->s_mount_opt, DELALLOC); } else if (test_opt(sb, DELALLOC)) - printk(KERN_INFO "EXT4-fs: delayed allocation enabled\n"); + ext4_msg(sb, KERN_INFO, "delayed allocation enabled"); + + err = ext4_setup_system_zone(sb); + if (err) { + ext4_msg(sb, KERN_ERR, "failed to initialize system " + "zone (%d)\n", err); + goto failed_mount4; + } ext4_ext_init(sb); err = ext4_mb_init(sb, needs_recovery); if (err) { - printk(KERN_ERR "EXT4-fs: failed to initalize mballoc (%d)\n", - err); + ext4_msg(sb, KERN_ERR, "failed to initalize mballoc (%d)", + err); goto failed_mount4; } @@ -2798,19 +2873,11 @@ no_journal: goto failed_mount4; }; - /* - * akpm: core read_super() calls in here with the superblock locked. - * That deadlocks, because orphan cleanup needs to lock the superblock - * in numerous places. Here we just pop the lock - it's relatively - * harmless, because we are now ready to accept write_super() requests, - * and aviro says that's the only reason for hanging onto the - * superblock lock. - */ EXT4_SB(sb)->s_mount_state |= EXT4_ORPHAN_FS; ext4_orphan_cleanup(sb, es); EXT4_SB(sb)->s_mount_state &= ~EXT4_ORPHAN_FS; if (needs_recovery) { - printk(KERN_INFO "EXT4-fs: recovery complete.\n"); + ext4_msg(sb, KERN_INFO, "recovery complete"); ext4_mark_recovery_complete(sb, es); } if (EXT4_SB(sb)->s_journal) { @@ -2823,25 +2890,30 @@ no_journal: } else descr = "out journal"; - printk(KERN_INFO "EXT4-fs: mounted filesystem %s with%s\n", - sb->s_id, descr); + ext4_msg(sb, KERN_INFO, "mounted filesystem with%s", descr); lock_kernel(); return 0; cantfind_ext4: if (!silent) - printk(KERN_ERR "VFS: Can't find ext4 filesystem on dev %s.\n", - sb->s_id); + ext4_msg(sb, KERN_ERR, "VFS: Can't find ext4 filesystem"); goto failed_mount; failed_mount4: - printk(KERN_ERR "EXT4-fs (device %s): mount failed\n", sb->s_id); + ext4_msg(sb, KERN_ERR, "mount failed"); + ext4_release_system_zone(sb); if (sbi->s_journal) { jbd2_journal_destroy(sbi->s_journal); sbi->s_journal = NULL; } failed_mount3: + if (sbi->s_flex_groups) { + if (is_vmalloc_addr(sbi->s_flex_groups)) + vfree(sbi->s_flex_groups); + else + kfree(sbi->s_flex_groups); + } percpu_counter_destroy(&sbi->s_freeblocks_counter); percpu_counter_destroy(&sbi->s_freeinodes_counter); percpu_counter_destroy(&sbi->s_dirs_counter); @@ -2862,6 +2934,7 @@ failed_mount: brelse(bh); out_fail: sb->s_fs_info = NULL; + kfree(sbi->s_blockgroup_lock); kfree(sbi); lock_kernel(); return ret; @@ -2906,27 +2979,27 @@ static journal_t *ext4_get_journal(struct super_block *sb, journal_inode = ext4_iget(sb, journal_inum); if (IS_ERR(journal_inode)) { - printk(KERN_ERR "EXT4-fs: no journal found.\n"); + ext4_msg(sb, KERN_ERR, "no journal found"); return NULL; } if (!journal_inode->i_nlink) { make_bad_inode(journal_inode); iput(journal_inode); - printk(KERN_ERR "EXT4-fs: journal inode is deleted.\n"); + ext4_msg(sb, KERN_ERR, "journal inode is deleted"); return NULL; } jbd_debug(2, "Journal inode found at %p: %lld bytes\n", journal_inode, journal_inode->i_size); if (!S_ISREG(journal_inode->i_mode)) { - printk(KERN_ERR "EXT4-fs: invalid journal inode.\n"); + ext4_msg(sb, KERN_ERR, "invalid journal inode"); iput(journal_inode); return NULL; } journal = jbd2_journal_init_inode(journal_inode); if (!journal) { - printk(KERN_ERR "EXT4-fs: Could not load journal inode\n"); + ext4_msg(sb, KERN_ERR, "Could not load journal inode"); iput(journal_inode); return NULL; } @@ -2950,22 +3023,22 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb, BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)); - bdev = ext4_blkdev_get(j_dev); + bdev = ext4_blkdev_get(j_dev, sb); if (bdev == NULL) return NULL; if (bd_claim(bdev, sb)) { - printk(KERN_ERR - "EXT4-fs: failed to claim external journal device.\n"); + ext4_msg(sb, KERN_ERR, + "failed to claim external journal device"); blkdev_put(bdev, FMODE_READ|FMODE_WRITE); return NULL; } blocksize = sb->s_blocksize; - hblock = bdev_hardsect_size(bdev); + hblock = bdev_logical_block_size(bdev); if (blocksize < hblock) { - printk(KERN_ERR - "EXT4-fs: blocksize too small for journal device.\n"); + ext4_msg(sb, KERN_ERR, + "blocksize too small for journal device"); goto out_bdev; } @@ -2973,8 +3046,8 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb, offset = EXT4_MIN_BLOCK_SIZE % blocksize; set_blocksize(bdev, blocksize); if (!(bh = __bread(bdev, sb_block, blocksize))) { - printk(KERN_ERR "EXT4-fs: couldn't read superblock of " - "external journal\n"); + ext4_msg(sb, KERN_ERR, "couldn't read superblock of " + "external journal"); goto out_bdev; } @@ -2982,14 +3055,14 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb, if ((le16_to_cpu(es->s_magic) != EXT4_SUPER_MAGIC) || !(le32_to_cpu(es->s_feature_incompat) & EXT4_FEATURE_INCOMPAT_JOURNAL_DEV)) { - printk(KERN_ERR "EXT4-fs: external journal has " - "bad superblock\n"); + ext4_msg(sb, KERN_ERR, "external journal has " + "bad superblock"); brelse(bh); goto out_bdev; } if (memcmp(EXT4_SB(sb)->s_es->s_journal_uuid, es->s_uuid, 16)) { - printk(KERN_ERR "EXT4-fs: journal UUID does not match\n"); + ext4_msg(sb, KERN_ERR, "journal UUID does not match"); brelse(bh); goto out_bdev; } @@ -3001,25 +3074,26 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb, journal = jbd2_journal_init_dev(bdev, sb->s_bdev, start, len, blocksize); if (!journal) { - printk(KERN_ERR "EXT4-fs: failed to create device journal\n"); + ext4_msg(sb, KERN_ERR, "failed to create device journal"); goto out_bdev; } journal->j_private = sb; ll_rw_block(READ, 1, &journal->j_sb_buffer); wait_on_buffer(journal->j_sb_buffer); if (!buffer_uptodate(journal->j_sb_buffer)) { - printk(KERN_ERR "EXT4-fs: I/O error on journal device\n"); + ext4_msg(sb, KERN_ERR, "I/O error on journal device"); goto out_journal; } if (be32_to_cpu(journal->j_superblock->s_nr_users) != 1) { - printk(KERN_ERR "EXT4-fs: External journal has more than one " - "user (unsupported) - %d\n", + ext4_msg(sb, KERN_ERR, "External journal has more than one " + "user (unsupported) - %d", be32_to_cpu(journal->j_superblock->s_nr_users)); goto out_journal; } EXT4_SB(sb)->journal_bdev = bdev; ext4_init_journal_params(sb, journal); return journal; + out_journal: jbd2_journal_destroy(journal); out_bdev: @@ -3041,8 +3115,8 @@ static int ext4_load_journal(struct super_block *sb, if (journal_devnum && journal_devnum != le32_to_cpu(es->s_journal_dev)) { - printk(KERN_INFO "EXT4-fs: external journal device major/minor " - "numbers have changed\n"); + ext4_msg(sb, KERN_INFO, "external journal device major/minor " + "numbers have changed"); journal_dev = new_decode_dev(journal_devnum); } else journal_dev = new_decode_dev(le32_to_cpu(es->s_journal_dev)); @@ -3054,24 +3128,23 @@ static int ext4_load_journal(struct super_block *sb, * crash? For recovery, we need to check in advance whether we * can get read-write access to the device. */ - if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) { if (sb->s_flags & MS_RDONLY) { - printk(KERN_INFO "EXT4-fs: INFO: recovery " - "required on readonly filesystem.\n"); + ext4_msg(sb, KERN_INFO, "INFO: recovery " + "required on readonly filesystem"); if (really_read_only) { - printk(KERN_ERR "EXT4-fs: write access " - "unavailable, cannot proceed.\n"); + ext4_msg(sb, KERN_ERR, "write access " + "unavailable, cannot proceed"); return -EROFS; } - printk(KERN_INFO "EXT4-fs: write access will " - "be enabled during recovery.\n"); + ext4_msg(sb, KERN_INFO, "write access will " + "be enabled during recovery"); } } if (journal_inum && journal_dev) { - printk(KERN_ERR "EXT4-fs: filesystem has both journal " - "and inode journals!\n"); + ext4_msg(sb, KERN_ERR, "filesystem has both journal " + "and inode journals!"); return -EINVAL; } @@ -3084,14 +3157,14 @@ static int ext4_load_journal(struct super_block *sb, } if (journal->j_flags & JBD2_BARRIER) - printk(KERN_INFO "EXT4-fs: barriers enabled\n"); + ext4_msg(sb, KERN_INFO, "barriers enabled"); else - printk(KERN_INFO "EXT4-fs: barriers disabled\n"); + ext4_msg(sb, KERN_INFO, "barriers disabled"); if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) { err = jbd2_journal_update_format(journal); if (err) { - printk(KERN_ERR "EXT4-fs: error updating journal.\n"); + ext4_msg(sb, KERN_ERR, "error updating journal"); jbd2_journal_destroy(journal); return err; } @@ -3103,7 +3176,7 @@ static int ext4_load_journal(struct super_block *sb, err = jbd2_journal_load(journal); if (err) { - printk(KERN_ERR "EXT4-fs: error loading journal.\n"); + ext4_msg(sb, KERN_ERR, "error loading journal"); jbd2_journal_destroy(journal); return err; } @@ -3114,18 +3187,17 @@ static int ext4_load_journal(struct super_block *sb, if (journal_devnum && journal_devnum != le32_to_cpu(es->s_journal_dev)) { es->s_journal_dev = cpu_to_le32(journal_devnum); - sb->s_dirt = 1; /* Make sure we flush the recovery flag to disk. */ - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); } return 0; } -static int ext4_commit_super(struct super_block *sb, - struct ext4_super_block *es, int sync) +static int ext4_commit_super(struct super_block *sb, int sync) { + struct ext4_super_block *es = EXT4_SB(sb)->s_es; struct buffer_head *sbh = EXT4_SB(sb)->s_sbh; int error = 0; @@ -3140,8 +3212,8 @@ static int ext4_commit_super(struct super_block *sb, * be remapped. Nothing we can do but to retry the * write and hope for the best. */ - printk(KERN_ERR "EXT4-fs: previous I/O error to " - "superblock detected for %s.\n", sb->s_id); + ext4_msg(sb, KERN_ERR, "previous I/O error to " + "superblock detected"); clear_buffer_write_io_error(sbh); set_buffer_uptodate(sbh); } @@ -3154,7 +3226,7 @@ static int ext4_commit_super(struct super_block *sb, &EXT4_SB(sb)->s_freeblocks_counter)); es->s_free_inodes_count = cpu_to_le32(percpu_counter_sum_positive( &EXT4_SB(sb)->s_freeinodes_counter)); - + sb->s_dirt = 0; BUFFER_TRACE(sbh, "marking dirty"); mark_buffer_dirty(sbh); if (sync) { @@ -3164,8 +3236,8 @@ static int ext4_commit_super(struct super_block *sb, error = buffer_write_io_error(sbh); if (error) { - printk(KERN_ERR "EXT4-fs: I/O error while writing " - "superblock for %s.\n", sb->s_id); + ext4_msg(sb, KERN_ERR, "I/O error while writing " + "superblock"); clear_buffer_write_io_error(sbh); set_buffer_uptodate(sbh); } @@ -3173,7 +3245,6 @@ static int ext4_commit_super(struct super_block *sb, return error; } - /* * Have we just finished recovery? If so, and if we are mounting (or * remounting) the filesystem readonly, then we will end up with a @@ -3192,14 +3263,11 @@ static void ext4_mark_recovery_complete(struct super_block *sb, if (jbd2_journal_flush(journal) < 0) goto out; - lock_super(sb); if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER) && sb->s_flags & MS_RDONLY) { EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); - sb->s_dirt = 0; - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); } - unlock_super(sb); out: jbd2_journal_unlock_updates(journal); @@ -3238,7 +3306,7 @@ static void ext4_clear_journal_err(struct super_block *sb, EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS; es->s_state |= cpu_to_le16(EXT4_ERROR_FS); - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); jbd2_journal_clear_err(journal); } @@ -3257,29 +3325,15 @@ int ext4_force_commit(struct super_block *sb) return 0; journal = EXT4_SB(sb)->s_journal; - if (journal) { - sb->s_dirt = 0; + if (journal) ret = ext4_journal_force_commit(journal); - } return ret; } -/* - * 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. (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 (EXT4_SB(sb)->s_journal) { - if (mutex_trylock(&sb->s_lock) != 0) - BUG(); - sb->s_dirt = 0; - } else { - ext4_commit_super(sb, EXT4_SB(sb)->s_es, 1); - } + ext4_commit_super(sb, 1); } static int ext4_sync_fs(struct super_block *sb, int wait) @@ -3288,16 +3342,9 @@ static int ext4_sync_fs(struct super_block *sb, int wait) tid_t target; trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait); - sb->s_dirt = 0; - if (EXT4_SB(sb)->s_journal) { - if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, - &target)) { - if (wait) - jbd2_log_wait_commit(EXT4_SB(sb)->s_journal, - target); - } - } else { - ext4_commit_super(sb, EXT4_SB(sb)->s_es, wait); + if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) { + if (wait) + jbd2_log_wait_commit(EXT4_SB(sb)->s_journal, target); } return ret; } @@ -3310,34 +3357,32 @@ static int ext4_freeze(struct super_block *sb) { int error = 0; journal_t *journal; - sb->s_dirt = 0; - if (!(sb->s_flags & MS_RDONLY)) { - journal = EXT4_SB(sb)->s_journal; + if (sb->s_flags & MS_RDONLY) + return 0; - if (journal) { - /* Now we set up the journal barrier. */ - jbd2_journal_lock_updates(journal); + journal = EXT4_SB(sb)->s_journal; - /* - * We don't want to clear needs_recovery flag when we - * failed to flush the journal. - */ - error = jbd2_journal_flush(journal); - if (error < 0) - goto out; - } + /* Now we set up the journal barrier. */ + jbd2_journal_lock_updates(journal); - /* Journal blocked and flushed, clear needs_recovery flag. */ - EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); - error = ext4_commit_super(sb, EXT4_SB(sb)->s_es, 1); - if (error) - goto out; + /* + * Don't clear the needs_recovery flag if we failed to flush + * the journal. + */ + error = jbd2_journal_flush(journal); + if (error < 0) { + out: + jbd2_journal_unlock_updates(journal); + return error; } + + /* Journal blocked and flushed, clear needs_recovery flag. */ + EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); + error = ext4_commit_super(sb, 1); + if (error) + goto out; return 0; -out: - jbd2_journal_unlock_updates(journal); - return error; } /* @@ -3346,14 +3391,15 @@ out: */ static int ext4_unfreeze(struct super_block *sb) { - if (EXT4_SB(sb)->s_journal && !(sb->s_flags & MS_RDONLY)) { - lock_super(sb); - /* Reser the needs_recovery flag before the fs is unlocked. */ - EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); - ext4_commit_super(sb, EXT4_SB(sb)->s_es, 1); - unlock_super(sb); - jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); - } + if (sb->s_flags & MS_RDONLY) + return 0; + + lock_super(sb); + /* Reset the needs_recovery flag before the fs is unlocked. */ + EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); + ext4_commit_super(sb, 1); + unlock_super(sb); + jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); return 0; } @@ -3432,22 +3478,15 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) (sbi->s_mount_state & EXT4_VALID_FS)) es->s_state = cpu_to_le16(sbi->s_mount_state); - /* - * We have to unlock super so that we can wait for - * transactions. - */ - if (sbi->s_journal) { - unlock_super(sb); + if (sbi->s_journal) ext4_mark_recovery_complete(sb, es); - lock_super(sb); - } } else { int ret; if ((ret = EXT4_HAS_RO_COMPAT_FEATURE(sb, ~EXT4_FEATURE_RO_COMPAT_SUPP))) { - printk(KERN_WARNING "EXT4-fs: %s: couldn't " + ext4_msg(sb, KERN_WARNING, "couldn't " "remount RDWR because of unsupported " - "optional features (%x).\n", sb->s_id, + "optional features (%x)", (le32_to_cpu(sbi->s_es->s_feature_ro_compat) & ~EXT4_FEATURE_RO_COMPAT_SUPP)); err = -EROFS; @@ -3456,17 +3495,15 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) /* * Make sure the group descriptor checksums - * are sane. If they aren't, refuse to - * remount r/w. + * are sane. If they aren't, refuse to remount r/w. */ for (g = 0; g < sbi->s_groups_count; g++) { struct ext4_group_desc *gdp = ext4_get_group_desc(sb, g, NULL); if (!ext4_group_desc_csum_verify(sbi, g, gdp)) { - printk(KERN_ERR - "EXT4-fs: ext4_remount: " - "Checksum for group %u failed (%u!=%u)\n", + ext4_msg(sb, KERN_ERR, + "ext4_remount: Checksum for group %u failed (%u!=%u)", g, le16_to_cpu(ext4_group_desc_csum(sbi, g, gdp)), le16_to_cpu(gdp->bg_checksum)); err = -EINVAL; @@ -3480,11 +3517,10 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) * require a full umount/remount for now. */ if (es->s_last_orphan) { - printk(KERN_WARNING "EXT4-fs: %s: couldn't " + ext4_msg(sb, KERN_WARNING, "Couldn't " "remount RDWR because of unprocessed " "orphan inode list. Please " - "umount/remount instead.\n", - sb->s_id); + "umount/remount instead"); err = -EINVAL; goto restore_opts; } @@ -3504,8 +3540,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) sb->s_flags &= ~MS_RDONLY; } } + ext4_setup_system_zone(sb); if (sbi->s_journal == NULL) - ext4_commit_super(sb, es, 1); + ext4_commit_super(sb, 1); #ifdef CONFIG_QUOTA /* Release old quota file names */ @@ -3515,6 +3552,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) kfree(old_opts.s_qf_names[i]); #endif return 0; + restore_opts: sb->s_flags = old_sb_flags; sbi->s_mount_opt = old_opts.s_mount_opt; @@ -3545,9 +3583,8 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) if (test_opt(sb, MINIX_DF)) { sbi->s_overhead_last = 0; } else if (sbi->s_blocks_last != ext4_blocks_count(es)) { - ext4_group_t ngroups = sbi->s_groups_count, i; + ext4_group_t i, ngroups = ext4_get_groups_count(sb); ext4_fsblk_t overhead = 0; - smp_rmb(); /* * Compute the overhead (FS structures). This is constant @@ -3599,11 +3636,12 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) le64_to_cpup((void *)es->s_uuid + sizeof(u64)); buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL; buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL; + return 0; } -/* Helper function for writing quotas on sync - we need to start transaction before quota file - * is locked for write. Otherwise the are possible deadlocks: +/* Helper function for writing quotas on sync - we need to start transaction + * before quota file is locked for write. Otherwise the are possible deadlocks: * Process 1 Process 2 * ext4_create() quota_sync() * jbd2_journal_start() write_dquot() @@ -3627,7 +3665,7 @@ static int ext4_write_dquot(struct dquot *dquot) inode = dquot_to_inode(dquot); handle = ext4_journal_start(inode, - EXT4_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); + EXT4_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); if (IS_ERR(handle)) return PTR_ERR(handle); ret = dquot_commit(dquot); @@ -3643,7 +3681,7 @@ static int ext4_acquire_dquot(struct dquot *dquot) handle_t *handle; handle = ext4_journal_start(dquot_to_inode(dquot), - EXT4_QUOTA_INIT_BLOCKS(dquot->dq_sb)); + EXT4_QUOTA_INIT_BLOCKS(dquot->dq_sb)); if (IS_ERR(handle)) return PTR_ERR(handle); ret = dquot_acquire(dquot); @@ -3659,7 +3697,7 @@ static int ext4_release_dquot(struct dquot *dquot) handle_t *handle; handle = ext4_journal_start(dquot_to_inode(dquot), - EXT4_QUOTA_DEL_BLOCKS(dquot->dq_sb)); + EXT4_QUOTA_DEL_BLOCKS(dquot->dq_sb)); if (IS_ERR(handle)) { /* Release dquot anyway to avoid endless cycle in dqput() */ dquot_release(dquot); @@ -3707,7 +3745,7 @@ static int ext4_write_info(struct super_block *sb, int type) static int ext4_quota_on_mount(struct super_block *sb, int type) { return vfs_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type], - EXT4_SB(sb)->s_jquota_fmt, type); + EXT4_SB(sb)->s_jquota_fmt, type); } /* @@ -3738,9 +3776,9 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id, if (EXT4_SB(sb)->s_qf_names[type]) { /* Quotafile not in fs root? */ if (path.dentry->d_parent != sb->s_root) - printk(KERN_WARNING - "EXT4-fs: Quota file not on filesystem root. " - "Journaled quota will not work.\n"); + ext4_msg(sb, KERN_WARNING, + "Quota file not on filesystem root. " + "Journaled quota will not work"); } /* @@ -3823,8 +3861,8 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type, handle_t *handle = journal_current_handle(); if (EXT4_SB(sb)->s_journal && !handle) { - printk(KERN_WARNING "EXT4-fs: Quota write (off=%llu, len=%llu)" - " cancelled because transaction is not started.\n", + ext4_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)" + " cancelled because transaction is not started", (unsigned long long)off, (unsigned long long)len); return -EIO; } @@ -3878,10 +3916,10 @@ out: #endif -static int ext4_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, struct vfsmount *mnt) +static int ext4_get_sb(struct file_system_type *fs_type, int flags, + const char *dev_name, void *data, struct vfsmount *mnt) { - return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt); + return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt); } static struct file_system_type ext4_fs_type = { @@ -3893,14 +3931,14 @@ static struct file_system_type ext4_fs_type = { }; #ifdef CONFIG_EXT4DEV_COMPAT -static int ext4dev_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, struct vfsmount *mnt) +static int ext4dev_get_sb(struct file_system_type *fs_type, int flags, + const char *dev_name, void *data,struct vfsmount *mnt) { - printk(KERN_WARNING "EXT4-fs: Update your userspace programs " - "to mount using ext4\n"); - printk(KERN_WARNING "EXT4-fs: ext4dev backwards compatibility " - "will go away by 2.6.31\n"); - return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt); + printk(KERN_WARNING "EXT4-fs (%s): Update your userspace programs " + "to mount using ext4\n", dev_name); + printk(KERN_WARNING "EXT4-fs (%s): ext4dev backwards compatibility " + "will go away by 2.6.31\n", dev_name); + return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt); } static struct file_system_type ext4dev_fs_type = { @@ -3917,13 +3955,16 @@ static int __init init_ext4_fs(void) { int err; + err = init_ext4_system_zone(); + if (err) + return err; ext4_kset = kset_create_and_add("ext4", NULL, fs_kobj); if (!ext4_kset) - return -ENOMEM; + goto out4; ext4_proc_root = proc_mkdir("fs/ext4", NULL); err = init_ext4_mballoc(); if (err) - return err; + goto out3; err = init_ext4_xattr(); if (err) @@ -3948,6 +3989,11 @@ out1: exit_ext4_xattr(); out2: exit_ext4_mballoc(); +out3: + remove_proc_entry("fs/ext4", NULL); + kset_unregister(ext4_kset); +out4: + exit_ext4_system_zone(); return err; } @@ -3962,6 +4008,7 @@ static void __exit exit_ext4_fs(void) exit_ext4_mballoc(); remove_proc_entry("fs/ext4", NULL); kset_unregister(ext4_kset); + exit_ext4_system_zone(); } MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others"); |