From: David Rientjes <rientjes@google.com>
Date: Mon, 7 Apr 2014 22:37:34 +0000 (-0700)
Subject: mm, compaction: determine isolation mode only once
X-Git-Tag: v3.15-rc1~57^2~124
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da1c67a76f7cf2b3404823d24f9f10fa91aa5dc5;p=pandora-kernel.git

mm, compaction: determine isolation mode only once

The conditions that control the isolation mode in
isolate_migratepages_range() do not change during the iteration, so
extract them out and only define the value once.

This actually does have an effect, gcc doesn't optimize it itself because
of cc->sync.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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