From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761156AbYFLXQS (ORCPT ); Thu, 12 Jun 2008 19:16:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754152AbYFLXQI (ORCPT ); Thu, 12 Jun 2008 19:16:08 -0400 Received: from [194.117.236.238] ([194.117.236.238]:47230 "EHLO heracles.linux360.ro" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754693AbYFLXQH (ORCPT ); Thu, 12 Jun 2008 19:16:07 -0400 Date: Fri, 13 Jun 2008 02:15:42 +0300 From: Eduard - Gabriel Munteanu To: righi.andrea@gmail.com Cc: tzanussi@gmail.com, penberg@cs.helsinki.fi, akpm@linux-foundation.org, compudj@krystal.dyndns.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] relay: Fix race condition which occurs when reading across CPUs. Message-ID: <20080613021542.6ca9e6b5@linux360.ro> In-Reply-To: <4851A9FA.1000104@gmail.com> References: <20080612232618.647f5cda@linux360.ro> <4851A9FA.1000104@gmail.com> X-Mailer: Claws Mail 3.3.0 (GTK+ 2.12.1; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 13 Jun 2008 00:58:01 +0200 (MEST) Andrea Righi wrote: > If you just break here buf->rw_lock will be unlocked twice. Maybe a > better way is: > if (desc->error < 0) > goto out; > ... > } while (desc->count && ret); > spin_unlock_irqrestore(&buf->rw_lock, flags); > out: > mutex_unlock(&filp->f_path.dentry->d_inode->i_mutex); > > return desc->written; Thanks, I did not notice. Will fix and resubmit. Eduard