linux-kernel - Re: [RFC] Limit the size of the pagecache

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Message-ID: <Pine.LNX.4.64.0701241840090.12325@schroedinger.engr.sgi.com>
Date:	Wed, 24 Jan 2007 18:40:45 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Erik Andersen <andersen@...epoet.org>
cc:	Nick Piggin <nickpiggin@...oo.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Aubrey Li <aubreylee@...il.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Robin Getz <rgetz@...ckfin.uclinux.org>,
	"Henn, erich, Michael" <Michael.Hennerich@...log.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC] Limit the size of the pagecache

On Wed, 24 Jan 2007, Erik Andersen wrote:

> It would be far more useful if an application could hint to the
> pagecache as to which files are and which files as not worth
> caching, especially when the application knows a priori that data
> from a particular file will or will not ever be reused.

It can give such hints via madvise(2).

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