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Message-ID: <46128A77.4080008@redhat.com>
Date: Tue, 03 Apr 2007 10:10:15 -0700
From: Ulrich Drepper <drepper@redhat.com>
Organization: Red Hat, Inc.
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To: Rik van Riel <riel@redhat.com>
CC: Andrew Morton <akpm@linux-foundation.org>,
       Linux Kernel <linux-kernel@vger.kernel.org>,
       Jakub Jelinek <jakub@redhat.com>
Subject: Re: missing madvise functionality
References: <46128051.9000609@redhat.com> <46128708.9030900@redhat.com>
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Rik van Riel wrote:
> I already started looking into implementing this.
>=20
> Basically:
> [...]

Sounds good.  Except:


> 1) on MADV_DONTNEED, mark pages clean, not accessed and move them
>    to some "dontneed" LRU list.

LRU is likely the wrong answer.  The longer a page has not been reused
the more likely it won't be.  So, the dontneed-list  should be a simple
FIFO.

--=20
=E2=9E=A7 Ulrich Drepper =E2=9E=A7 Red Hat, Inc. =E2=9E=A7 444 Castro St =
=E2=9E=A7 Mountain View, CA =E2=9D=96


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