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authorEric Sandeen <sandeen@redhat.com>2009-12-14 12:59:59 -0600
committerJan Kara <jack@suse.cz>2009-12-23 13:44:11 +0100
commit4854a5f0cbb1967fc7db3ea861d97afeea78b88b (patch)
tree092ac94277b2f3fc506f177a04f3e541e14b8aaa /fs/ext3
parented505ee454dbf133b1a4067d3ac0325d4261eda1 (diff)
downloadlinux-4854a5f0cbb1967fc7db3ea861d97afeea78b88b.tar.bz2
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.c8
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,