From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761676AbXGEOjs (ORCPT ); Thu, 5 Jul 2007 10:39:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758380AbXGEOjm (ORCPT ); Thu, 5 Jul 2007 10:39:42 -0400 Received: from cavan.codon.org.uk ([217.147.92.49]:44509 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755471AbXGEOjl (ORCPT ); Thu, 5 Jul 2007 10:39:41 -0400 Date: Thu, 5 Jul 2007 15:39:18 +0100 From: Matthew Garrett To: "Rafael J. Wysocki" Cc: Pavel Machek , Paul Mackerras , Alan Stern , Johannes Berg , Linux-pm mailing list , Kernel development list Message-ID: <20070705143918.GA23248@srcf.ucam.org> References: <18059.6726.218205.104212@cargo.ozlabs.ibm.com> <200707051628.12199.rjw@sisk.pl> <20070705142600.GB22598@srcf.ucam.org> <200707051641.39998.rjw@sisk.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200707051641.39998.rjw@sisk.pl> User-Agent: Mutt/1.5.12-2006-07-14 X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk Subject: Re: removing refrigerator does not help with s2ram vs. fuse deadlocks (was Re: [linux-pm] Re: [PATCH] Remove process freezer from suspend to RAM pathway) X-SA-Exim-Version: 4.2.1 (built Tue, 20 Jun 2006 01:35:45 +0000) X-SA-Exim-Scanned: Yes (on vavatch.codon.org.uk) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 05, 2007 at 04:41:39PM +0200, Rafael J. Wysocki wrote: > On Thursday, 5 July 2007 16:26, Matthew Garrett wrote: > > On Thu, Jul 05, 2007 at 04:28:11PM +0200, Rafael J. Wysocki wrote: > > > On Thursday, 5 July 2007 15:57, Matthew Garrett wrote: > > > > And also "Userland should not depend on userland services", which is > > > > rather more of a problem. > > > > > > I think you're oversimplifying it, as far as FUSE is concerned. > > > > > > Namely, if there are two userland tasks, A and B, and B is uninterruptible, > > > because A is blocked, then this is not a usual situation. > > > > Fuse is one case of it occuring, and if we end up with more userspace > > drivers then the problem is only going to get worse. > > But this is a problem by itself, regardless of the freezer etc., no? Why? -- Matthew Garrett | mjg59@srcf.ucam.org