From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759555Ab2D0URL (ORCPT ); Fri, 27 Apr 2012 16:17:11 -0400 Received: from mail-pz0-f51.google.com ([209.85.210.51]:60810 "EHLO mail-pz0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757651Ab2D0URI (ORCPT ); Fri, 27 Apr 2012 16:17:08 -0400 Date: Fri, 27 Apr 2012 13:17:04 -0700 From: Tejun Heo To: Alan Stern Cc: "Eric W. Biederman" , Peter Zijlstra , Kernel development list Subject: Re: Lockdep false positive in sysfs Message-ID: <20120427201704.GK26595@google.com> References: <87haw55eed.fsf@xmission.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 27, 2012 at 02:27:26PM -0400, Alan Stern wrote: > Which do you prefer: temporarily dropping the lockdep annotation, or > deferring the work to the per-task work queue? Note that these "flush > before returning to userspace" things aren't in the kernel yet. It's about lockdep. Let's not spill out to other areas unnecessarily. I'd much prefer just working around lockdep annotation. Thanks. -- tejun