diff --git a/mm/list_lru.c b/mm/list_lru.c
index c669d87001a6..ddb2ee627d32 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -67,6 +67,7 @@ list_lru_from_kmem(struct list_lru *lru, int nid, void *ptr,
        struct list_lru_node *nlru = &lru->node[nid];
        struct list_lru_one *l = &nlru->lru;
        struct mem_cgroup *memcg = NULL;
+       int kmemcg_id;