From: Hillf Danton <dhillf@gmail.com>
Date: Tue, 1 Nov 2011 00:09:38 +0000 (-0700)
Subject: mm/huge_memory: fix copying user highpage
X-Git-Tag: v3.2-rc1~108^2~62
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0089e4853ae1ac161fae5137170971ccb6f4f152;p=pandora-kernel.git

mm/huge_memory: fix copying user highpage

The THP copy-on-write handler falls back to regular-sized pages for a huge
page replacement upon allocation failure or if THP has been individually
disabled in the target VMA.  The loop responsible for copying page-sized
chunks accidentally uses multiples of PAGE_SHIFT instead of PAGE_SIZE as
the virtual address arg for copy_user_highpage().

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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