Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756623Ab0ANJOX (ORCPT ); Thu, 14 Jan 2010 04:14:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756567Ab0ANJOW (ORCPT ); Thu, 14 Jan 2010 04:14:22 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:34837 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756559Ab0ANJOV (ORCPT ); Thu, 14 Jan 2010 04:14:21 -0500 Subject: Re: 2.6.33-rc3 -- INFO: possible recursive locking -- (s_active){++++.+}, at: [] sysfs_hash_and_remove+0x3d/0x4f From: Peter Zijlstra To: "Eric W. Biederman" Cc: Miles Lane , "Rafael J. Wysocki" , =?ISO-8859-1?Q?Am=E9rico?= Wang , LKML , Greg Kroah-Hartman , Jesse Barnes , Len Brown , Pavel Machek , Arjan van de Ven , Tejun Heo , Ingo Molnar In-Reply-To: References: <2375c9f91001100058w4bac1cf9s183fc37eafbfde75@mail.gmail.com> <201001101935.31882.rjw@sisk.pl> Content-Type: text/plain; charset="UTF-8" Date: Thu, 14 Jan 2010 10:13:00 +0100 Message-ID: <1263460380.4244.285.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 808 Lines: 21 On Wed, 2010-01-13 at 19:09 -0800, Eric W. Biederman wrote: > > I agree weird. Either you don't have my patch working correctly or I > talk a good good game but I don't have a clue about lockdep > subclasses. Subclasses and classes are basically the same thing, except that subclasses are an 'easy' way to modify the regular class of an object. Subclasses are limited to 7, 0 (the regular class), 1-7 subclasses. Subclasses (just like regular classes) have no intrinsic ordering, their order is given by the lock hierarchy. Anything else you want to know? -- 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/