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Date: Tue, 17 Feb 2015 14:25:07 +0900
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [RFC 13/16] mm/cma: populate ZONE_CMA and use this zone when
 GFP_HIGHUSERMOVABLE
Message-ID: <20150217052506.GC15413@js1304-P5Q-DELUXE>
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To: Gioh Kim <gioh.kim@lge.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mgorman@suse.de>, Laura Abbott <lauraa@codeaurora.org>, Minchan Kim <minchan@kernel.org>, Heesub Shin <heesub.shin@samsung.com>, Marek Szyprowski <m.szyprowski@samsung.com>, Michal Nazarewicz <mina86@mina86.com>, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hui Zhu <zhuhui@xiaomi.com>, Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>, Ritesh Harjani <ritesh.list@gmail.com>, Vlastimil Babka <vbabka@suse.cz>

On Sat, Feb 14, 2015 at 02:02:16PM +0900, Gioh Kim wrote:
> 
> 
> 2015-02-12 i??i?? 4:32i?? Joonsoo Kim i?'(e??) i?' e,?:
> > Until now, reserved pages for CMA are managed altogether with normal
> > page in the same zone. This approach has numorous problems and fixing
> > them isn't easy. To fix this situation, ZONE_CMA is introduced in
> > previous patch, but, not yet populated. This patch implement population
> > of ZONE_CMA by stealing reserved pages from normal zones. This stealing
> > break one uncertain assumption on zone, that is, zone isn't overlapped.
> > In the early of this series, some check is inserted to every zone's span
> > iterator to handle zone overlap so there would be no problem with
> > this assumption break.
> > 
> > To utilize this zone, user should use GFP_HIGHUSERMOVABLE, because
> 
> I think it might be typo of GFP_HIGHUSER_MOVABLE.
> 

Yes, I will correct next time.

Thanks.

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