diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index b4a25979ee8c78638ca312a9d56a5454e51369f3..4517d132d1e26758564235331daa5a2e60932ac6 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -544,7 +544,7 @@ unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec,
 	struct mem_cgroup_per_node *mz;
 
 	mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec);
-	return mz->lru_zone_size[zone_idx][lru];
+	return READ_ONCE(mz->lru_zone_size[zone_idx][lru]);
 }
 
 void mem_cgroup_handle_over_high(void);