linux-kernel - Re: [PATCH] compaction: fix COMPACTPAGEFAILED counting

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Message-ID: <20100823170610.GB2304@barrios-desktop>
Date:	Tue, 24 Aug 2010 02:06:10 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel List <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org, Hugh Dickins <hughd@...gle.com>,
	Andi Kleen <andi@...stfloor.org>, Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH] compaction: fix COMPACTPAGEFAILED counting

On Mon, Aug 23, 2010 at 11:41:49AM -0500, Christoph Lameter wrote:
> On Tue, 24 Aug 2010, Minchan Kim wrote
> 
> > This patch introude new argument 'cleanup' to migrate_pages.
> > Only if we set 1 to 'cleanup', migrate_page will clean up the lists.
> > Otherwise, caller need to clean up the lists so it has a chance to postprocess
> > the pages.
> 
> Could we simply make migrate_pages simply not do any cleanup?
> Caller has to call putback_lru_pages()?
> 
Hmm. maybe I misunderstood your point. 
Your point is that let's make whole caller of migrate_pagse has a responsibility
of clean up the list?

-- 
Kind regards,
Minchan Kim
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