diff --git a/Documentation/vm/page_frags b/Documentation/vm/page_frags
index a6714565dbf9..637cc49d1b2f 100644
--- a/Documentation/vm/page_frags
+++ b/Documentation/vm/page_frags
@@ -1,5 +1,8 @@
+.. _page_frags:
+
+==============
 Page fragments
---------------
+==============
 
 A page fragment is an arbitrary-length arbitrary-offset area of memory
 which resides within a 0 or higher order compound page.  Multiple