From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758036AbXGDXeD (ORCPT ); Wed, 4 Jul 2007 19:34:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755290AbXGDXdz (ORCPT ); Wed, 4 Jul 2007 19:33:55 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:45649 "EHLO amd.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755258AbXGDXdy (ORCPT ); Wed, 4 Jul 2007 19:33:54 -0400 Date: Thu, 5 Jul 2007 01:33:51 +0200 From: Pavel Machek To: Matthew Garrett Cc: linux-kernel@vger.kernel.org, linux-pm@lists.linux-foundation.org Subject: Re: [PATCH] Remove process freezer from suspend to RAM pathway Message-ID: <20070704233351.GA2719@elf.ucw.cz> References: <20070703042916.GA17240@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070703042916.GA17240@srcf.ucam.org> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.11+cvs20060126 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > Suspend to RAM on a machine with / on a fuse filesystem turns out to be > a screaming nightmare - either the suspend fails because syslog (for > instance) can't be frozen, or the machine deadlocks for some other > reason I haven't tracked down. We could "fix" fuse, or alternatively we > could do what we do for suspend to RAM on other platforms (PPC and APM) > and just not use the freezer. > > Signed-off-by: Matthew Garrett Sorry, no. * this needs audit of all drivers. Or we can just merge it and then fix all the problems it causes. If you are willing to become suspend maintainer and handle all that mess, perhaps we can do this. * it does not solve FUSE vs. hibernation * it does not solve FUSE vs. suspend-to-both * userspace will now see CPUs going up and down at minimum Now, we want to do something like this long-term, but I do not think we can just remove the freezer like this. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html