Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

[~andy/linux] / fs / fscache / object-list.c

diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c
index e1959efad64fa0f4101541683e8c422d27a37aa7..b5ebc2d7d80d30d39b21243561e1f7d26c300329 100644 (file)
--- a/fs/fscache/object-list.c
+++ b/fs/fscache/object-list.c
@@ -50,6 +50,8 @@ void fscache_objlist_add(struct fscache_object *obj)
        struct fscache_object *xobj;
        struct rb_node **p = &fscache_object_list.rb_node, *parent = NULL;
 
+       ASSERT(RB_EMPTY_NODE(&obj->objlist_link));
+
        write_lock(&fscache_object_list_lock);
 
        while (*p) {
@@ -75,6 +77,9 @@ void fscache_objlist_add(struct fscache_object *obj)
  */
 void fscache_objlist_remove(struct fscache_object *obj)
 {
+       if (RB_EMPTY_NODE(&obj->objlist_link))
+               return;
+
        write_lock(&fscache_object_list_lock);
 
        BUG_ON(RB_EMPTY_ROOT(&fscache_object_list));