diff --git a/mm/rmap.c b/mm/rmap.c
index c9ccc1a..836c6c6 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -703,8 +703,10 @@
  */
 void page_add_file_rmap(struct page *page)
 {
-	if (atomic_inc_and_test(&page->_mapcount))
+	if (atomic_inc_and_test(&page->_mapcount)) {
 		__inc_zone_page_state(page, NR_FILE_MAPPED);
+		mem_cgroup_update_mapped_file_stat(page, 1);
+	}
 }
 
 #ifdef CONFIG_DEBUG_VM
@@ -753,6 +755,7 @@
 			mem_cgroup_uncharge_page(page);
 		__dec_zone_page_state(page,
 			PageAnon(page) ? NR_ANON_PAGES : NR_FILE_MAPPED);
+		mem_cgroup_update_mapped_file_stat(page, -1);
 		/*
 		 * It would be tidy to reset the PageAnon mapping here,
 		 * but that might overwrite a racing page_add_anon_rmap