diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 45add35..e46a073 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -117,7 +117,7 @@
 }
 
 extern bool mem_cgroup_oom_called(struct task_struct *task);
-
+void mem_cgroup_update_mapped_file_stat(struct page *page, int val);
 #else /* CONFIG_CGROUP_MEM_RES_CTLR */
 struct mem_cgroup;
 
@@ -271,6 +271,11 @@
 {
 }
 
+static inline void mem_cgroup_update_mapped_file_stat(struct page *page,
+							int val)
+{
+}
+
 #endif /* CONFIG_CGROUP_MEM_CONT */
 
 #endif /* _LINUX_MEMCONTROL_H */