linux-kernel - Re: [rfc] increase struct page size?!

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Message-Id: <20070518001905.54cafeeb.akpm@linux-foundation.org>
Date:	Fri, 18 May 2007 00:19:05 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	linux-arch@...r.kernel.org
Subject: Re: [rfc] increase struct page size?!

On Fri, 18 May 2007 06:08:54 +0200 Nick Piggin <npiggin@...e.de> wrote:

> Many batch operations on struct page are completely random,

But they shouldn't be: we should aim to place physically contiguous pages
into logically contiguous pagecache slots, for all the reasons we
discussed.

If/when that happens, there will be a *lot* of locality of reference
against the pageframes in a lot of important codepaths.

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