linux-kernel - Re: [PATCH] mm: inactive-clean list

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Message-ID: <Pine.LNX.4.64.0607172035140.28956@schroedinger.engr.sgi.com>
Date:	Mon, 17 Jul 2006 20:37:05 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
cc:	linux-mm <linux-mm@...ck.org>, Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: inactive-clean list

On Mon, 17 Jul 2006, Peter Zijlstra wrote:

> This patch implements the inactive_clean list spoken of during the VM summit.
> The LRU tail pages will be unmapped and ready to free, but not freeed.
> This gives reclaim an extra chance.

I thought we wanted to just track the number of unmapped clean pages and 
insure that they do not go under a certain limit? That would not require
any locking changes but just a new zoned counter and a check in the dirty
handling path.

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