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| author | Eric Sandeen <sandeen@redhat.com> | 2009-12-14 12:59:59 -0600 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2009-12-23 13:44:11 +0100 |
| commit | 4854a5f0cbb1967fc7db3ea861d97afeea78b88b (patch) | |
| tree | 092ac94277b2f3fc506f177a04f3e541e14b8aaa /fs/ext3 | |
| parent | ed505ee454dbf133b1a4067d3ac0325d4261eda1 (diff) | |
| download | linux-4854a5f0cbb1967fc7db3ea861d97afeea78b88b.tar.gz linux-4854a5f0cbb1967fc7db3ea861d97afeea78b88b.tar.bz2 linux-4854a5f0cbb1967fc7db3ea861d97afeea78b88b.zip | |
ext3: ext3_mark_recovery_complete() doesn't need to use lock_super
The function ext3_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
ext3_remount().
Port of ext4 commit a63c9eb2ce6f5028da90f282798232c4f398ceb8 by
Theodore Ts'o <tytso@mit.edu>.
CC: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext3')
| -rw-r--r-- | fs/ext3/super.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 8ad566b845ae..806b8b780add 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -2396,13 +2396,11 @@ static void ext3_mark_recovery_complete(struct super_block * sb, if (journal_flush(journal) < 0) goto out; - lock_super(sb); if (EXT3_HAS_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER) && sb->s_flags & MS_RDONLY) { EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER); ext3_commit_super(sb, es, 1); } - unlock_super(sb); out: journal_unlock_updates(journal); @@ -2594,13 +2592,7 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data) (sbi->s_mount_state & EXT3_VALID_FS)) es->s_state = cpu_to_le16(sbi->s_mount_state); - /* - * We have to unlock super so that we can wait for - * transactions. - */ - unlock_super(sb); ext3_mark_recovery_complete(sb, es); - lock_super(sb); } else { __le32 ret; if ((ret = EXT3_HAS_RO_COMPAT_FEATURE(sb, |