From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753653AbZHLPcv (ORCPT ); Wed, 12 Aug 2009 11:32:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753615AbZHLPcu (ORCPT ); Wed, 12 Aug 2009 11:32:50 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:47013 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753611AbZHLPcu (ORCPT ); Wed, 12 Aug 2009 11:32:50 -0400 Date: Wed, 12 Aug 2009 08:32:14 -0700 (PDT) From: Linus Torvalds X-X-Sender: torvalds@localhost.localdomain To: Catalin Marinas cc: Ingo Molnar , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: kmemleak: Protect the seq start/next/stop sequence by rcu_read_lock() In-Reply-To: <1250079447.20332.27.camel@pc1117.cambridge.arm.com> Message-ID: References: <20090729152101.1878.71159.stgit@pc1117.cambridge.arm.com> <20090802111453.GA24927@elte.hu> <1249919718.10848.55.camel@pc1117.cambridge.arm.com> <20090810184527.GA9601@elte.hu> <1249945003.26205.23.camel@pc1117.cambridge.arm.com> <20090811073205.GA17476@elte.hu> <1249980905.27150.11.camel@pc1117.cambridge.arm.com> <1250079447.20332.27.camel@pc1117.cambridge.arm.com> User-Agent: Alpine 2.01 (LFD 1184 2008-12-16) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 12 Aug 2009, Catalin Marinas wrote: > > If the object size is bigger than a predefined value (4K in this case), > release the object lock during scanning and call cond_resched(). What guarantees that the object isn't released during this? Linus