Date: Wed, 24 Jan 2007 18:40:45 -0800 (PST)
From: Christoph Lameter <clameter@sgi.com>
To: Erik Andersen <andersen@codepoet.org>
cc: Nick Piggin <nickpiggin@yahoo.com.au>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Aubrey Li <aubreylee@gmail.com>,
       Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
       Robin Getz <rgetz@blackfin.uclinux.org>,
       "Henn, erich, Michael" <Michael.Hennerich@analog.com>,
       linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] Limit the size of the pagecache
In-Reply-To: <20070124200614.GA25690@codepoet.org>
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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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