From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757499AbXGDID3 (ORCPT ); Wed, 4 Jul 2007 04:03:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753579AbXGDIDK (ORCPT ); Wed, 4 Jul 2007 04:03:10 -0400 Received: from ozlabs.org ([203.10.76.45]:45449 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754570AbXGDIDI (ORCPT ); Wed, 4 Jul 2007 04:03:08 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18059.21555.317415.928416@cargo.ozlabs.ibm.com> Date: Wed, 4 Jul 2007 18:02:59 +1000 From: Paul Mackerras To: Miklos Szeredi Cc: oliver@neukum.org, benh@kernel.crashing.org, mjg59@srcf.ucam.org, linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [linux-pm] Re: [PATCH] Remove process freezer from suspend to RAM pathway In-Reply-To: References: <20070703042916.GA17240@srcf.ucam.org> <200707031307.41366.oliver@neukum.org> <1183463053.10386.112.camel@localhost.localdomain> <200707031355.51028.oliver@neukum.org> <18058.56956.595143.15424@cargo.ozlabs.ibm.com> X-Mailer: VM 7.19 under Emacs 21.4.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Miklos Szeredi writes: > That's weird, I never had a suspend problem due to a fuse mount, > though I have them all the time. And I suspect, that even the sync() Well, I don't either, because we don't freeze processes on powerbooks. But I have heard that other people have problems with suspending with a fuse filesystem mounted. Maybe the difference is whether or not the filesystem is writable? > thing that suspend does is not the real cause, because sync() actually > does nothing in fuse filesystems. It's not the filesystem sync method, as I understand it, it's that if there are dirty pages in the page cache for files on the fuse filesystem, the system will initiate a write-out on them and wait for it to finish. But if the fuse userspace is frozen, the write-out will never complete. Paul.