From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Thu, 26 Oct 2006 02:20:05 -0700 (PDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.168.29]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id k9Q9JraG019711 for ; Thu, 26 Oct 2006 02:19:54 -0700 Received: from pop5-1.us4.outblaze.com (pop5-1.us4.outblaze.com [205.158.62.125]) by cuda.sgi.com (Spam Firewall) with SMTP id A9826D14D58A for ; Thu, 26 Oct 2006 02:19:09 -0700 (PDT) Subject: Re: [PATCH] Freeze bdevs when freezing processes. From: Nigel Cunningham In-Reply-To: <20061026085700.GI8394166@melbourne.sgi.com> References: <1161576735.3466.7.camel@nigel.suspend2.net> <200610251432.41958.rjw@sisk.pl> <1161782620.3638.0.camel@nigel.suspend2.net> <200610252105.56862.rjw@sisk.pl> <20061026073022.GG8394166@melbourne.sgi.com> <1161850709.17293.23.camel@nigel.suspend2.net> <20061026085700.GI8394166@melbourne.sgi.com> Content-Type: text/plain Date: Thu, 26 Oct 2006 19:18:57 +1000 Message-Id: <1161854338.17293.25.camel@nigel.suspend2.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: David Chinner Cc: "Rafael J. Wysocki" , Pavel Machek , Andrew Morton , LKML , xfs@oss.sgi.com Hi. On Thu, 2006-10-26 at 18:57 +1000, David Chinner wrote: > I didn't think we've ever done that - periodic or delayed operations > are passed off to the kernel threads to execute. A stack trace > (if you still have it) would be really help here. I don't, but I know how to get it again. Will give it a go shortly. > Hmmm - we have a couple of per-cpu work queues as well that are > used on I/O completion and that can, in some circumstances, > trigger new transactions. If we are only flush metadata, then > I don't think that any more I/o will be issued, but I could be > wrong (maze of twisty passages). I can understand that. I'm trying to learn Xgl programming at the mo :) Nigel