[PATCH v2 0/4] enhance compaction success rate

[Joonsoo Kim]

This patchset aims at increase of compaction success rate. Changes are 
related to compaction finish condition and freepage isolation condition.

>From these changes, I did stress highalloc test in mmtests with nonmovable
order 7 allocation configuration, and compaction success rate (%) are

Base	Patch-1 Patch-2 Patch-3	Patch-4
18.47	27.13   31.82	--	42.20

Note: Base version is tested in v1 and the others are tested freshly.
Test is perform based on next-20150103 and Vlastimil's stealing logic
patches due to current next's unstablility.
Patch-3 isn't tested since there is no functional change.

Joonsoo (3):
  mm/compaction: stop the isolation when we isolate enough freepage
  mm/page_alloc: separate steal decision from steal behaviour part
  mm/compaction: enhance compaction finish condition

Joonsoo Kim (1):
  mm/compaction: fix wrong order check in compact_finished()

 include/linux/mmzone.h |  3 +++
 mm/compaction.c        | 47 ++++++++++++++++++++++++++++++++++++++---------
 mm/internal.h          |  1 +
 mm/page_alloc.c        | 50 ++++++++++++++++++++++++++++++++------------------
 4 files changed, 74 insertions(+), 27 deletions(-)

-- 
1.9.1

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