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| author | Al Viro | 2010-03-23 00:36:35 +0100 |
|---|---|---|
| committer | Al Viro | 2010-05-22 00:31:14 +0200 |
| commit | 551de6f34dfeefbeeadb32909c387d393114ecc8 (patch) | |
| tree | 822af803e7e75ed476b0a176639c162e0395910d /fs/drop_caches.c | |
| parent | Saner locking around deactivate_super() (diff) | |
| download | kernel-qcow2-linux-551de6f34dfeefbeeadb32909c387d393114ecc8.tar.gz kernel-qcow2-linux-551de6f34dfeefbeeadb32909c387d393114ecc8.tar.xz kernel-qcow2-linux-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/drop_caches.c')
| -rw-r--r-- | fs/drop_caches.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c index 31f4b0e6d72c..9cd4e4a70f56 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -40,6 +40,8 @@ static void drop_pagecache(void) spin_lock(&sb_lock); restart: list_for_each_entry(sb, &super_blocks, s_list) { + if (list_empty(&sb->s_instances)) + continue; sb->s_count++; spin_unlock(&sb_lock); down_read(&sb->s_umount); |