linux-kernel - Re: [patch 05/19] split LRU lists into anon & file sets

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Message-ID: <20080108173634.5ed3b0d4@bree.surriel.com>
Date:	Tue, 8 Jan 2008 17:36:34 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Christoph Lameter <clameter@....com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Lee Schermerhorn <Lee.Schermerhorn@...com>
Subject: Re: [patch 05/19] split LRU lists into anon & file sets

On Tue, 8 Jan 2008 14:22:38 -0800 (PST)
Christoph Lameter <clameter@....com> wrote:

> It may be good to coordinate this with Andrea Arcangeli's OOM fixes.

Probably.  With the split LRU lists (and the noreclaim LRUs), we can
simplify the OOM test a lot:

If free + file_active + file_inactive <= zone->pages_high and swap
space is full, the system is doomed.  No need for guesswork.

> Also would it be possible to create generic functions that can move pages 
> in pagevecs to an arbitrary lru list?

What would you use those functions for?

Or am I simply misunderstanding your idea?

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