linux-kernel - Re: [PATCH 0/3] mm/cma: manage the memory of the CMA area by using the ZONE

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Date:   Fri, 25 Aug 2017 14:32:13 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     js1304@...il.com
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>,
        Vlastimil Babka <vbabka@...e.cz>,
        Russell King <linux@...linux.org.uk>,
        Will Deacon <will.deacon@....com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-team@....com,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH 0/3] mm/cma: manage the memory of the CMA area by using
 the ZONE_MOVABLE

On Thu, 24 Aug 2017 15:36:30 +0900 js1304@...il.com wrote:

> From: Joonsoo Kim <iamjoonsoo.kim@....com>
> 
> This patchset is the follow-up of the discussion about the
> "Introduce ZONE_CMA (v7)" [1]. Please reference it if more information
> is needed.
> 
> In this patchset, the memory of the CMA area is managed by using
> the ZONE_MOVABLE. Since there is another type of the memory in this zone,
> we need to maintain a migratetype for the CMA memory to account
> the number of the CMA memory. So, unlike previous patchset, there is
> less deletion of the code.
> 
> Otherwise, there is no big change.
> 
> Motivation of this patchset is described in the commit description of
> the patch "mm/cma: manage the memory of the CMA area by using
> the ZONE_MOVABLE". Please refer it for more information.
> 
> This patchset is based on linux-next-20170822 plus
> "mm/page_alloc: don't reserve ZONE_HIGHMEM for ZONE_MOVABLE".
> 

But "mm/page_alloc: don't reserve ZONE_HIGHMEM for ZONE_MOVABLE" did
not do very well at review - both Michal and Vlastimil are looking for
changes.  So we're not ready for a patch series which depends upon that
one?