From: Gioh Kim <gioh.kim@lge.com>
Date: Wed, 15 Apr 2015 23:13:33 +0000 (-0700)
Subject: mm/compaction: reset compaction scanner positions
X-Git-Tag: omap-for-v4.2/o2_dc~118^2~99
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=195b0c60809ce841e5818b365808e7da3286fd3c;p=pandora-kernel.git

mm/compaction: reset compaction scanner positions

When the compaction is activated via /proc/sys/vm/compact_memory it would
better scan the whole zone.  And some platforms, for instance ARM, have
the start_pfn of a zone at zero.  Therefore the first try to compact via
/proc doesn't work.  It needs to reset the compaction scanner position
first.

Signed-off-by: Gioh Kim <gioh.kim@lge.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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