From: Linus Torvalds<torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Sun, 11 Apr 2010 17:15:03 -0700
Subject: [PATCH 3/4] anon_vma: clone the anon_vma chain in the right order
We want to walk the chain in reverse order when cloning it, so that the
order of the result chain will be the same as the order in the source
chain. When we add entries to the chain, they go at the head of the
chain, so we want to add the source head last.
Signed-off-by: Linus Torvalds<torvalds@xxxxxxxxxxxxxxxxxxxx>