Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754789Ab0KEVfA (ORCPT ); Fri, 5 Nov 2010 17:35:00 -0400 Received: from cantor2.suse.de ([195.135.220.15]:60005 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751600Ab0KEVe6 (ORCPT ); Fri, 5 Nov 2010 17:34:58 -0400 Date: Fri, 5 Nov 2010 22:34:56 +0100 From: Jan Kara To: Jan Engelhardt Cc: Jan Kara , Andrew Morton , Linus Torvalds , Jens Axboe , Linux Kernel , stable@kernel.org, gregkh@suse.de Subject: Re: Sync writeback still broken Message-ID: <20101105213456.GB25520@quack.suse.cz> References: <20100212091609.GB1025@kernel.dk> <20100215144938.GD3434@quack.suse.cz> <20101031122437.GA6296@quack.suse.cz> <20101031224012.GB13207@quack.suse.cz> <20101105213324.GA25520@quack.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101105213324.GA25520@quack.suse.cz> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 860 Lines: 19 On Fri 05-11-10 22:33:24, Jan Kara wrote: > I needed one more patch to resolve the issue (attached) which I've just > posted for review and possible inclusion. I had a similar one long time ago > but now I'm better able to explain why it works because of tracepoints. > Yay! ;). With those three patches I'm not able to trigger livelocks (but > sync takes still 15 minutes because the througput to disk is about 4MB/s - > no big surprise given the random nature of the load) PS: And big thanks to you for providing the test case and your persistence ;) Honza -- Jan Kara SUSE Labs, CR -- 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/