From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Thu, 18 Sep 2008 16:58:11 -0500
From: Christoph Lameter <cl@linux-foundation.org>
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Subject: Re: Populating multiple ptes at fault time
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To: MinChan Kim <minchan.kim@gmail.com>
Cc: Martin Bligh <mbligh@google.com>, Chris Snook <csnook@redhat.com>, Jeremy Fitzhardinge <jeremy@goop.org>, Nick Piggin <nickpiggin@yahoo.com.au>, Hugh Dickens <hugh@veritas.com>, Linux Memory Management List <linux-mm@kvack.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Avi Kivity <avi@qumranet.com>, Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>
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MinChan Kim wrote:

> In case of file-mapped pages, Shouldn't we use just on-demand
> readahead mechanism in kernel ?

Correct.

> If it is inefficient, It means we have to change on-demand readahead
> mechanism itself.

Right.

My patches were only for anonymous pages not for file backed because readahead
is available for file backed mappings.

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