From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756164AbYHASGv (ORCPT ); Fri, 1 Aug 2008 14:06:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752154AbYHASGo (ORCPT ); Fri, 1 Aug 2008 14:06:44 -0400 Received: from gw.goop.org ([64.81.55.164]:46655 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752038AbYHASGo (ORCPT ); Fri, 1 Aug 2008 14:06:44 -0400 Message-ID: <489350AE.1030609@goop.org> Date: Fri, 01 Aug 2008 11:06:38 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Peter Zijlstra CC: David Miller , mingo@elte.hu, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org Subject: Re: [PATCH] lockdep: lock_set_subclass - reset a held lock's subclass References: <20080731.155504.167792984.davem@davemloft.net> <20080801.011122.32782916.davem@davemloft.net> <20080801090100.GA25142@elte.hu> <20080801.021348.233313767.davem@davemloft.net> <1217588920.9686.6.camel@twins> In-Reply-To: <1217588920.9686.6.camel@twins> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Peter Zijlstra wrote: > From: Peter Zijlstra > Subject: lockdep: lock_set_subclass - reset a held lock's subclass > > this can be used to reset a held lock's subclass, for arbitrary-depth > iterated data structures such as trees or lists which have per-node > locks. > Hey, can I use this to suppress the spurious lockdep warnings I get when I try to hold more than one pte lock at once? J