From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 20 Aug 2010 23:39:25 +0000 (-0700)
Subject: mm: make the mlock() stack guard page checks stricter
X-Git-Tag: v2.6.36-rc2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7798330ac8114c731cfab83e634c6ecedaa233d7;p=pandora-kernel.git

mm: make the mlock() stack guard page checks stricter

If we've split the stack vma, only the lowest one has the guard page.
Now that we have a doubly linked list of vma's, checking this is trivial.

Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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