linux-kernel - Re: [PATCH v2 1/7] mm/compaction: split freepages without holding the zone lock

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Message-ID: <CAAmzW4MPf+TW2=mNd_wNPsCSvRrA4e+CMomdZeBekuTdy6Q7dg@mail.gmail.com>
Date:	Fri, 3 Jun 2016 21:45:13 +0900
From:	Joonsoo Kim <js1304@...il.com>
To:	Vlastimil Babka <vbabka@...e.cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...hsingularity.net>,
	Minchan Kim <minchan@...nel.org>,
	Alexander Potapenko <glider@...gle.com>,
	Hugh Dickins <hughd@...gle.com>,
	Michal Hocko <mhocko@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH v2 1/7] mm/compaction: split freepages without holding the
 zone lock

2016-06-03 19:10 GMT+09:00 Vlastimil Babka <vbabka@...e.cz>:
> On 05/26/2016 04:37 AM, js1304@...il.com wrote:
>>
>> From: Joonsoo Kim <iamjoonsoo.kim@....com>
>>
>> We don't need to split freepages with holding the zone lock. It will cause
>> more contention on zone lock so not desirable.
>>
>> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
>
>
> So it wasn't possible to at least move this code from compaction.c to
> page_alloc.c? Or better, reuse prep_new_page() with some forged
> gfp/alloc_flags? As we discussed in v1...

Sorry for not mentioning that I did it as a separate patch,
Please see below link which is the last one within this patchset.

Link: http://lkml.kernel.org/r/1464230275-25791-7-git-send-email-iamjoonsoo.kim@lge.com

Thanks.