linux-kernel - Re: [PATCH] mm: compaction: Do not compact pgdat for order-0

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Message-ID: <20130816043721.GB6216@gmail.com>
Date:	Fri, 16 Aug 2013 13:37:21 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Hillf Danton <dhillf@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH] mm: compaction: Do not compact pgdat for order-0

On Thu, Aug 15, 2013 at 04:39:27PM +0100, Mel Gorman wrote:
> If kswapd was reclaiming for a high order and resets it to 0 due to
> fragmentation it will still call compact_pgdat. For the most part, this will
> fail a compaction_suitable() test and not compact but it is unnecessarily
> sloppy. It could be fixed in the caller but fix it in the API instead.
> 
> [dhillf@...il.com: Pointed out that it was a potential problem]
> Signed-off-by: Mel Gorman <mgorman@...e.de>
Acked-by: Minchan Kim <minchan@...nel.org>

-- 
Kind regards,
Minchan Kim
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