memcg: remove warning when CONFIG_DEBUG_VM=n
mm/memcontrol.c:318: warning: `mem_cgroup_is_obsolete' defined but not used
[akpm@linux-foundation.org: simplify as suggested by Balbir]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 2fc6d6c..e44fb0f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -932,7 +932,7 @@
if (unlikely(!mem))
return 0;
- VM_BUG_ON(mem_cgroup_is_obsolete(mem));
+ VM_BUG_ON(!mem || mem_cgroup_is_obsolete(mem));
while (1) {
int ret;