Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 11 Apr 2002 19:10:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 11 Apr 2002 19:10:53 -0400 Received: from imladris.infradead.org ([194.205.184.45]:1287 "EHLO phoenix.infradead.org") by vger.kernel.org with ESMTP id ; Thu, 11 Apr 2002 19:10:52 -0400 Date: Fri, 12 Apr 2002 00:10:02 +0100 From: Christoph Hellwig To: Andrew Morton , Alexander Viro , Linus Torvalds , linux-kernel@vger.kernel.org Subject: Re: [prepatch] address_space-based writeback Message-ID: <20020412001002.A29540@infradead.org> Mail-Followup-To: Christoph Hellwig , Andrew Morton , Alexander Viro , Linus Torvalds , linux-kernel@vger.kernel.org In-Reply-To:

<3CB5FFB5.693E7755@zip.com.au> <20020411225536.GE8062@turbolinux.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 11, 2002 at 04:55:36PM -0600, Andreas Dilger wrote: > At one time Linus proposed having an array of dirty bits for a page, > which would allow us to mark only parts of a page dirty (say down to > the sector level). I believe this was in the discussion about moving > the block devices to the page cache around 2.4.10. The early XFS code used to do this for kiobuf-based block I/O, but it got dropped around 2.4.8 IIRC. The new page->private handling from akpm which seems to be merged in Linus' BK tree (Linus: please push it to bkbits.net, thanks :)) can be used to do the same if and only if we don't need the buffer_heads attached to the page. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/