From: Christoph Hellwig Subject: Re: [patch 12/17] vfs: pagecache usage optimization for pagesize!=blocksize Date: Mon, 28 Jul 2008 19:00:32 -0400 Message-ID: <20080728230031.GA22218@infradead.org> References: <200807282246.m6SMkaHT032267@imap1.linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: torvalds@linux-foundation.org, hifumi.hisashi@oss.ntt.co.jp, hch@infradead.org, jack@ucw.cz, linux-ext4@vger.kernel.org, nickpiggin@yahoo.com.au To: akpm@linux-foundation.org Return-path: Received: from bombadil.infradead.org ([18.85.46.34]:33548 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752011AbYG1XAf (ORCPT ); Mon, 28 Jul 2008 19:00:35 -0400 Content-Disposition: inline In-Reply-To: <200807282246.m6SMkaHT032267@imap1.linux-foundation.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Mon, Jul 28, 2008 at 03:46:36PM -0700, akpm@linux-foundation.org wrote: > From: Hisashi Hifumi > > When we read some part of a file through pagecache, if there is a > pagecache of corresponding index but this page is not uptodate, read IO is > issued and this page will be uptodate. I was under the impression we wanted to do this in a nicer way than the hacky method?