docs/vm: page_frags convert to ReST format
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/vm/page_frags b/Documentation/vm/page_frags
index a671456..637cc49 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