From 551de6f34dfeefbeeadb32909c387d393114ecc8 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 22 Mar 2010 19:36:35 -0400 Subject: 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 --- fs/drop_caches.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/drop_caches.c') 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); -- cgit