linux-kernel - Re: [PATCH 12/28] readahead: state based method

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Message-ID: <Pine.LNX.4.64.0611150853510.19227@schroedinger.engr.sgi.com>
Date:	Wed, 15 Nov 2006 08:54:44 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Wu Fengguang <wfg@...l.ustc.edu.cn>
cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/28] readahead: state based method - aging accounting

On Wed, 15 Nov 2006, Wu Fengguang wrote:

> Collect info about the global available memory and its consumption speed.
> The data are used by the stateful method to estimate the thrashing threshold.

Looks like you should use a ZVC counter for total scanned. See 
include/linux/mmzone.h.
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