Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752974AbYJFEU5 (ORCPT ); Mon, 6 Oct 2008 00:20:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750854AbYJFEUt (ORCPT ); Mon, 6 Oct 2008 00:20:49 -0400 Received: from casper.infradead.org ([85.118.1.10]:39591 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750832AbYJFEUs (ORCPT ); Mon, 6 Oct 2008 00:20:48 -0400 Date: Sun, 5 Oct 2008 21:20:31 -0700 From: Arjan van de Ven To: Mikulas Patocka Cc: Andrew Morton , linux-kernel@vger.kernel.org, agk@redhat.com, mbroz@redhat.com, chris@arachsys.com Subject: Re: [PATCH 2/3] Fix fsync livelock Message-ID: <20081005212031.63ad246a@infradead.org> In-Reply-To: References: <20080911101616.GA24064@agk.fab.redhat.com> <20080923154905.50d4b0fa.akpm@linux-foundation.org> <20080923164623.ce82c1c2.akpm@linux-foundation.org> <20081001225404.4e973465.akpm@linux-foundation.org> <20081005153306.7e644c9f@infradead.org> <20081005160724.54dd1a27@infradead.org> <20081005162847.7bf0ead1@infradead.org> <20081005173019.0a358b09@infradead.org> Organization: Intel X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.12; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 920 Lines: 23 On Sun, 5 Oct 2008 23:30:51 -0400 (EDT > The point is that many fsync()s may run in parallel and you have just > one inode and just one chain. And if you add two-word list_head to a > page, to link it on this list, many developers will hate it for > increasing its size. why to a page? a list head in the inode and chain up the bios.... or not make an actual list but just a "is the previous one done" thing it's not all that hard to get something that works on a per inode basis, that gives "wait for all io upto this one". -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/