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vfs: Call ->sync_fs() even if s_dirt is 0 (version 4)

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sync_filesystems() has a condition that if wait == 0 and s_dirt == 0, then
->sync_fs() isn't called. This does not really make much sence since s_dirt is
generally used by a filesystem to mean that ->write_super() needs to be called.
But ->sync_fs() does different things. I even suspect that some filesystems
(btrfs?) sets s_dirt just to fool this logic.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jan Kara 2009-04-27 16:43:49 +02:00 committed by Al Viro
parent 5a3e5cb8e0
commit bfe881255c
1 changed files with 1 additions and 1 deletions
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2
fs/super.c
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@ -510,7 +510,7 @@ void sync_filesystems(int wait)
sb->s_count++;
spin_unlock(&sb_lock);
down_read(&sb->s_umount);
if (sb->s_root && (wait || sb->s_dirt))
if (sb->s_root)
sb->s_op->sync_fs(sb, wait);
up_read(&sb->s_umount);
/* restart only when sb is no longer on the list */