diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 954032b80bedd0f761d66ba8c984dc88207c9584..d813823ab08f06916a3d905ecfabffe3d0ca217f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2545,7 +2545,7 @@ static int mem_cgroup_force_empty_list(struct mem_cgroup *mem,
 		pc = list_entry(list->prev, struct page_cgroup, lru);
 		if (busy == pc) {
 			list_move(&pc->lru, list);
-			busy = 0;
+			busy = NULL;
 			spin_unlock_irqrestore(&zone->lru_lock, flags);
 			continue;
 		}