From: Johannes Weiner <hannes@cmpxchg.org>
Date: Wed, 3 Aug 2011 23:21:09 +0000 (-0700)
Subject: mm: page_alloc: increase __GFP_BITS_SHIFT to include __GFP_OTHER_NODE
X-Git-Tag: v3.1-rc1~69
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3dab1bce8e840606e76f1bad5a009328e2aa35c7;p=pandora-kernel.git

mm: page_alloc: increase __GFP_BITS_SHIFT to include __GFP_OTHER_NODE

__GFP_OTHER_NODE is used for NUMA allocations on behalf of other nodes.
It's supposed to be passed through from the page allocator to
zone_statistics(), but it never gets there as gfp_allowed_mask is not
wide enough and masks out the flag early in the allocation path.

The result is an accounting glitch where successful NUMA allocations
by-agent are not properly attributed as local.

Increase __GFP_BITS_SHIFT so that it includes __GFP_OTHER_NODE.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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