From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263647AbTK2Fbc (ORCPT ); Sat, 29 Nov 2003 00:31:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263650AbTK2Fbc (ORCPT ); Sat, 29 Nov 2003 00:31:32 -0500 Received: from holomorphy.com ([199.26.172.102]:48836 "EHLO holomorphy") by vger.kernel.org with ESMTP id S263647AbTK2Fbb (ORCPT ); Sat, 29 Nov 2003 00:31:31 -0500 Date: Fri, 28 Nov 2003 21:31:28 -0800 From: William Lee Irwin III To: John Zielinski Cc: linux-kernel@vger.kernel.org Subject: Re: Rootfs mounted from user space - problem with umount Message-ID: <20031129053128.GF8039@holomorphy.com> Mail-Followup-To: William Lee Irwin III , John Zielinski , linux-kernel@vger.kernel.org References: <3FC82D8F.9030100@undead.cc> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3FC82D8F.9030100@undead.cc> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Nov 29, 2003 at 12:24:31AM -0500, John Zielinski wrote: > I modified my kernel so that rootfs uses tmpfs (shm) instead of ramfs. > I also modified it so that it allows mounting from user space. My > problem is when I try to umount it, umount hangs. I checked it's > proc/#/wchan entry and it's stuck in rwsem_down_write_failed. Now the > strange thing is I can mount it again from another console and then > umount it with no problems. It just hangs the first time. I know I'm > missing something simple but I can't seem to find it. Could you do a sysrq t and send in a backtrace? -- wli