diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 1b1ac3db2187..841a077d5aeb 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -160,6 +160,6 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
 
 	if (need_zonelists_rebuild)
 		build_all_zonelists();
-
+	vm_total_pages = nr_free_pagecache_pages();
 	return 0;
 }