linux-kernel - Re: [PATCH 1/4] mm, compaction: more reliably increase direct compaction priority-fix

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Date:   Tue, 27 Sep 2016 11:25:46 +0800
From:   "Hillf Danton" <hillf.zj@...baba-inc.com>
To:     "'Vlastimil Babka'" <vbabka@...e.cz>,
        "'Andrew Morton'" <akpm@...ux-foundation.org>
Cc:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        "'Linus Torvalds'" <torvalds@...ux-foundation.org>,
        "'Arkadiusz Miskiewicz'" <a.miskiewicz@...il.com>,
        "'Ralf-Peter Rohbeck'" <Ralf-Peter.Rohbeck@...ntum.com>,
        "'Olaf Hering'" <olaf@...fle.de>,
        "'Mel Gorman'" <mgorman@...hsingularity.net>,
        "'Joonsoo Kim'" <iamjoonsoo.kim@....com>,
        "'David Rientjes'" <rientjes@...gle.com>,
        "'Rik van Riel'" <riel@...hat.com>,
        "'Michal Hocko'" <mhocko@...nel.org>,
        "'Michal Hocko'" <mhocko@...e.com>
Subject: Re: [PATCH 1/4] mm, compaction: more reliably increase direct compaction priority-fix

On Tuesday, September 27, 2016 12:20 AM Vlastimil Babka wrote 
> 
> When increasing the compaction priority, also reset retries. Otherwise we can
> consume all retries on the lower priorities. Also pull the retries increment
> into should_compact_retry() so it counts only the rounds where we actually
> rely on it.
> 
> Suggested-by: Michal Hocko <mhocko@...e.com>
> Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
> Acked-by: Michal Hocko <mhocko@...e.com>
> Cc: Mel Gorman <mgorman@...hsingularity.net>
> Cc: Joonsoo Kim <iamjoonsoo.kim@....com>
> Cc: David Rientjes <rientjes@...gle.com>
> Cc: Rik van Riel <riel@...hat.com>
> ---
Acked-by: Hillf Danton <hillf.zj@...baba-inc.com>