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From: Joonsoo Kim <js1304@gmail.com>
Date: Tue, 30 Aug 2016 17:21:18 +0900
Message-ID: <CAAmzW4MZdwn2-Pd_58B+vXKOyPybdfx4FPRvxNaADnDCryo7Ng@mail.gmail.com>
Subject: Re: [PATCH v5 0/6] Introduce ZONE_CMA
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>,
        Mel Gorman <mgorman@techsingularity.net>,
        Laura Abbott <lauraa@codeaurora.org>, Minchan Kim <minchan@kernel.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Michal Nazarewicz <mina86@mina86.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        Linux Memory Management List <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>
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2016-08-29 18:27 GMT+09:00 Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>:
> js1304@gmail.com writes:
>
>> From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
>>
>> Hello,
>>
>> Changes from v4
>> o Rebase on next-20160825
>> o Add general fix patch for lowmem reserve
>> o Fix lowmem reserve ratio
>> o Fix zone span optimizaion per Vlastimil
>> o Fix pageset initialization
>> o Change invocation timing on cma_init_reserved_areas()
>
> I don't see much information regarding how we interleave between
> ZONE_CMA and other zones for movable allocation. Is that explained in
> any of the patch ? The fair zone allocator got removed by
> e6cbd7f2efb433d717af72aa8510a9db6f7a7e05

Interleaving would not work since the fair zone allocator policy is removed.
I don't think that it's a big problem because it is just matter of
timing to fill
up the memory. Eventually, memory on ZONE_CMA will be fully used in
any case.

Thanks.