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Date: Sun, 17 Jun 2007 19:08:41 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
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To: Matt Mackall <mpm@selenic.com>
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Subject: Re: [patch 00/14] Page cache cleanup in anticipation of Large
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On Sun, 17 Jun 2007, Matt Mackall wrote:

> Is it? Last I looked it had reverted to handing out reverse-contiguous
> pages.

I thought that was fixed? Bill Irwin was working on it.

But the contiguous pages usually only work shortly after boot. After 
awhile memory gets sufficiently scrambled that the coalescing in the I/O 
layer becomes ineffective.