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| author | Theodore Ts'o <tytso@mit.edu> | 2009-05-01 01:59:42 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-05-01 01:59:42 -0400 |
| commit | a63c9eb2ce6f5028da90f282798232c4f398ceb8 (patch) | |
| tree | 3b32193dfc80a3925f5ea5a6545765f5176a6f2d /fs/ext4 | |
| parent | 114e9fc90703bd6aac0229fb559e97caa6c49770 (diff) | |
| download | linux-a63c9eb2ce6f5028da90f282798232c4f398ceb8.tar.gz linux-a63c9eb2ce6f5028da90f282798232c4f398ceb8.tar.bz2 linux-a63c9eb2ce6f5028da90f282798232c4f398ceb8.zip | |
ext4: ext4_mark_recovery_complete() doesn't need to use lock_super
The function ext4_mark_recovery_complete() is called from two call
paths: either (a) while mounting the filesystem, in which case there's
no danger of any other CPU calling write_super() until the mount is
completed, and (b) while remounting the filesystem read-write, in
which case the fs core has already locked the superblock. This also
allows us to take out a very vile unlock_super()/lock_super() pair in
ext4_remount().
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/super.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index e3b35f26d5fe..45d0ada9bfce 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3219,13 +3219,11 @@ 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); ext4_commit_super(sb, 1); } - unlock_super(sb); out: jbd2_journal_unlock_updates(journal); @@ -3436,15 +3434,8 @@ 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, |