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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>