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authorVlastimil Babka <vbabka@suse.cz>2016-10-08 03:00:34 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-08 04:46:29 +0300
commitc2033b00dbe856909fcaccf038e4e0d3dcfb85af (patch)
tree866c7d2177b8547188ecde9879e687d2e98ad5ab /kernel/module.c
parentd943649831aba0fcdda37a0e9e25b332a634cf5e (diff)
downloadlinux-c2033b00dbe856909fcaccf038e4e0d3dcfb85af.tar.xz
mm, compaction: restrict full priority to non-costly orders
The new ultimate compaction priority disables some heuristics, which may result in excessive cost. This is fine for non-costly orders where we want to try hard before resulting for OOM, but might be disruptive for costly orders which do not trigger OOM and should generally have some fallback. Thus, we disable the full priority for costly orders. Suggested-by: Michal Hocko <mhocko@kernel.org> Link: http://lkml.kernel.org/r/20160906135258.18335-4-vbabka@suse.cz Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Cc: Michal Hocko <mhocko@kernel.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: David Rientjes <rientjes@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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