linux-kernel - Re: [PATCH v4 4/5] mm/cma: remove MIGRATE

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Message-ID: <1f79f242-b51a-f9c8-848d-f12ee378dde5@suse.cz>
Date:   Fri, 19 Aug 2016 15:29:59 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     js1304@...il.com, Andrew Morton <akpm@...ux-foundation.org>
Cc:     Rik van Riel <riel@...hat.com>,
        Johannes Weiner <hannes@...xchg.org>,
        mgorman@...hsingularity.net, Laura Abbott <lauraa@...eaurora.org>,
        Minchan Kim <minchan@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Michal Nazarewicz <mina86@...a86.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH v4 4/5] mm/cma: remove MIGRATE_CMA

On 08/09/2016 08:39 AM, js1304@...il.com wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@....com>
>
> Now, all reserved pages for CMA region are belong to the ZONE_CMA
> and there is no other type of pages. Therefore, we don't need to
> use MIGRATE_CMA to distinguish and handle differently for CMA pages
> and ordinary pages. Remove MIGRATE_CMA.
>
> Unfortunately, this patch make free CMA counter incorrect because
> we count it when pages are on the MIGRATE_CMA. It will be fixed
> by next patch. I can squash next patch here but it makes changes
> complicated and hard to review so I separate that.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>

Acked-by: Vlastimil Babka <vbabka@...e.cz>