super: fix for destroy lrus

This patch adds the missing call to list_lru_destroy (spotted by Li Zhong)
and moves the deletion to after the shrinker is unregistered, as correctly
spotted by Dave

Signed-off-by: Glauber Costa <glommer@openvz.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/super.c b/fs/super.c
index 269d96857caa..3a96c9783a8b 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -323,6 +323,9 @@ void deactivate_locked_super(struct super_block *s)
 
                 /* caches are now gone, we can safely kill the shrinker now */
                 unregister_shrinker(&s->s_shrink);
+                list_lru_destroy(&s->s_dentry_lru);
+                list_lru_destroy(&s->s_inode_lru);
+
                 put_filesystem(fs);
                 put_super(s);
         } else {