linux-kernel - Re: [PATCH 2/5] lumpy: isolate_lru_pages wants to specifically take active or inactive pages

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Message-ID: <Pine.LNX.4.64.0702281015340.21257@schroedinger.engr.sgi.com>
Date:	Wed, 28 Feb 2007 10:17:03 -0800 (PST)
From:	Christoph Lameter <clameter@...r.sgi.com>
To:	Andy Whitcroft <apw@...dowen.org>
cc:	Andrew Morton <akpm@...l.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH 2/5] lumpy: isolate_lru_pages wants to specifically take
 active or inactive pages

On Tue, 27 Feb 2007, Andy Whitcroft wrote:

> The caller of isolate_lru_pages specifically knows whether it wants
> to take either inactive or active pages.  Currently we take the
> state of the LRU page at hand and use that to scan for matching
> pages in the order sized block.  If that page is transiting we
> can scan for the wrong type.  The caller knows what they want and
> should be telling us.  Pass in the required active/inactive state
> and match against that.

The page cannot be transiting since we hold the lru lock?
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