Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751754Ab1CUFyQ (ORCPT ); Mon, 21 Mar 2011 01:54:16 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:42622 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751039Ab1CUFyO (ORCPT ); Mon, 21 Mar 2011 01:54:14 -0400 Date: Mon, 21 Mar 2011 05:54:13 +0000 From: Al Viro To: Alexander Beregalov Cc: Linux Kernel Mailing List Subject: Re: 2.6.39-rc0: umount tmpfs hangs Message-ID: <20110321055413.GT22723@ZenIV.linux.org.uk> References: <20110321033926.GP22723@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 842 Lines: 17 On Mon, Mar 21, 2011 at 08:30:23AM +0300, Alexander Beregalov wrote: > > rcu_barrier() hanging for some reason... ??I really wonder what's going > > on there - missing rcu_read_unlock()? ??Could you try to reproduce that > > sucker and, if possible, bisect it? > > Yes, it's reproducible, but I'm bisecting another issue and have few > more such issues with the current kernel. Could you post the reproducer? Simple mounting tmpfs and umount explicitly doesn't seem to trigger it; doing some IO on that fs doesn't change that, ditto for umount done by shutdown instead of doing it manually... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/