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| author | Al Viro <viro@zeniv.linux.org.uk> | 2010-03-22 19:36:35 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-05-21 18:31:14 -0400 |
| commit | 551de6f34dfeefbeeadb32909c387d393114ecc8 (patch) | |
| tree | 822af803e7e75ed476b0a176639c162e0395910d /fs/sync.c | |
| parent | 1712ac8fda7d8bc4dc921f5777b7423aacad7263 (diff) | |
| download | lwn-551de6f34dfeefbeeadb32909c387d393114ecc8.tar.gz lwn-551de6f34dfeefbeeadb32909c387d393114ecc8.zip | |
Leave superblocks on s_list until the end
We used to remove from s_list and s_instances at the same
time. So let's *not* do the former and skip superblocks
that have empty s_instances in the loops over s_list.
The next step, of course, will be to get rid of rescan logics
in those loops.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/sync.c')
| -rw-r--r-- | fs/sync.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/sync.c b/fs/sync.c index 92b228176f7c..ad6691bae370 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -99,10 +99,13 @@ static void sync_filesystems(int wait) mutex_lock(&mutex); /* Could be down_interruptible */ spin_lock(&sb_lock); list_for_each_entry(sb, &super_blocks, s_list) - sb->s_need_sync = 1; + if (!list_empty(&sb->s_instances)) + sb->s_need_sync = 1; restart: list_for_each_entry(sb, &super_blocks, s_list) { + if (list_empty(&sb->s_instances)) + continue; if (!sb->s_need_sync) continue; sb->s_need_sync = 0; |