tree 573c8ad7aeeb67e0e368510b95ef1d660adec1d3
parent 539a13b47e462d28c48f076c63871580f694a366
author David Rientjes <rientjes@google.com> 1396910254 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1396913755 -0700

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>