From: Michal Hocko <mhocko@kernel.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>,
Ralf-Peter Rohbeck <Ralf-Peter.Rohbeck@quantum.com>,
Olaf Hering <olaf@aepfle.de>,
linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-mm@kvack.org, Mel Gorman <mgorman@techsingularity.net>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
David Rientjes <rientjes@google.com>,
Rik van Riel <riel@redhat.com>
Subject: Re: [PATCH 2/4] mm, compaction: more reliably increase direct compaction priority
Date: Wed, 21 Sep 2016 19:13:50 +0200 [thread overview]
Message-ID: <20160921171348.GF24210@dhcp22.suse.cz> (raw)
In-Reply-To: <20160906135258.18335-3-vbabka@suse.cz>
On Tue 06-09-16 15:52:56, Vlastimil Babka wrote:
[...]
> @@ -3204,6 +3199,15 @@ should_compact_retry(struct alloc_context *ac, int order, int alloc_flags,
> if (compaction_retries <= max_retries)
> return true;
>
> + /*
> + * Make sure there is at least one attempt at the highest priority
> + * if we exhausted all retries at the lower priorities
> + */
> +check_priority:
> + if (*compact_priority > MIN_COMPACT_PRIORITY) {
> + (*compact_priority)--;
> + return true;
Don't we want to reset compaction_retries here? Otherwise we can consume
all retries on the lower priorities.
Other than that it looks good to me. With that you can add
Acked-by: Michal Hocko <mhocko@suse.com>
> + }
> return false;
> }
> #else
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2016-09-21 17:13 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-06 13:52 [PATCH 0/4] reintroduce compaction feedback for OOM decisions Vlastimil Babka
2016-09-06 13:52 ` [PATCH 1/4] Revert "mm, oom: prevent premature OOM killer invocation for high order request" Vlastimil Babka
2016-09-21 17:04 ` Michal Hocko
2016-09-06 13:52 ` [PATCH 2/4] mm, compaction: more reliably increase direct compaction priority Vlastimil Babka
2016-09-21 17:13 ` Michal Hocko [this message]
2016-09-22 12:51 ` Vlastimil Babka
2016-09-22 14:08 ` Michal Hocko
2016-09-22 14:52 ` Michal Hocko
2016-09-22 14:59 ` Vlastimil Babka
2016-09-22 15:06 ` Vlastimil Babka
2016-09-23 4:04 ` Hillf Danton
2016-09-23 6:55 ` Vlastimil Babka
2016-09-23 8:23 ` Michal Hocko
2016-09-23 10:47 ` Vlastimil Babka
2016-09-23 12:06 ` Michal Hocko
2016-09-06 13:52 ` [PATCH 3/4] mm, compaction: restrict full priority to non-costly orders Vlastimil Babka
2016-09-21 17:15 ` Michal Hocko
2016-09-06 13:52 ` [PATCH 4/4] mm, compaction: make full priority ignore pageblock suitability Vlastimil Babka
2016-09-15 18:51 ` [PATCH 0/4] reintroduce compaction feedback for OOM decisions Arkadiusz Miskiewicz
2016-09-21 17:18 ` Michal Hocko
2016-09-22 15:18 ` Vlastimil Babka
2016-09-23 8:26 ` Michal Hocko
2016-09-23 10:55 ` Vlastimil Babka
2016-09-23 12:09 ` Michal Hocko
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