From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Date: Wed, 12 Mar 2014 08:26:20 +0000 (+0900)
Subject: slub: fix high order page allocation problem with __GFP_NOFAIL
X-Git-Tag: v3.15-rc1~3^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80c3a9981a544b6e96debfbcca5190b727ecd09e;p=pandora-kernel.git

slub: fix high order page allocation problem with __GFP_NOFAIL

SLUB already try to allocate high order page with clearing __GFP_NOFAIL.
But, when allocating shadow page for kmemcheck, it missed clearing
the flag. This trigger WARN_ON_ONCE() reported by Christian Casteyde.

https://bugzilla.kernel.org/show_bug.cgi?id=65991
https://lkml.org/lkml/2013/12/3/764

This patch fix this situation by using same allocation flag as original
allocation.

Reported-by: Christian Casteyde <casteyde.christian@free.fr>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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