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authorAl Viro <viro@zeniv.linux.org.uk>2010-03-22 19:36:35 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2010-05-21 18:31:14 -0400
commit551de6f34dfeefbeeadb32909c387d393114ecc8 (patch)
tree822af803e7e75ed476b0a176639c162e0395910d /fs/drop_caches.c
parent1712ac8fda7d8bc4dc921f5777b7423aacad7263 (diff)
downloadlinux-551de6f34dfeefbeeadb32909c387d393114ecc8.tar.gz
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.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 31f4b0e6d72..9cd4e4a70f5 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);