From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alasdair G Kergon Subject: Re: [dm-devel] [PATCH] deadlock with suspend and quotas Date: Wed, 30 Nov 2011 13:48:34 +0000 Message-ID: <20111130134834.GW7595@agk-dp.fab.redhat.com> References: <20111128150400.GE6366@quack.suse.cz> <20111129101901.GA5635@quack.suse.cz> <20111130133332.GV7595@agk-dp.fab.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: esandeen@redhat.com, linux-kernel@vger.kernel.org, dm-devel@redhat.com, linux-fsdevel@vger.kernel.org, Christopher Chaltain , Valerie Aurora To: Jan Kara , Mikulas Patocka Return-path: Received: from mx1.redhat.com ([209.132.183.28]:53906 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754665Ab1K3NtJ (ORCPT ); Wed, 30 Nov 2011 08:49:09 -0500 Content-Disposition: inline In-Reply-To: <20111130133332.GV7595@agk-dp.fab.redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Wed, Nov 30, 2011 at 01:33:32PM +0000, Alasdair G Kergon wrote: > Have I missed something in this > reasoning, Mikulas? Ah - counter-example: mmap? So sync might indeed be required to block on the filesystem iff there are newly-dirtied pages. Alasdair