From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760058Ab2IEXLZ (ORCPT ); Wed, 5 Sep 2012 19:11:25 -0400 Received: from mail-pz0-f46.google.com ([209.85.210.46]:62289 "EHLO mail-pz0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759819Ab2IEXLV (ORCPT ); Wed, 5 Sep 2012 19:11:21 -0400 Date: Wed, 5 Sep 2012 16:11:16 -0700 From: Tejun Heo To: Lai Jiangshan , linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] workqueue: fix possible deadlock in idle worker rebinding Message-ID: <20120905231116.GD29092@google.com> References: <20120905061233.GA3195@dhcp-172-17-108-109.mtv.corp.google.com> <20120905061632.GB3195@dhcp-172-17-108-109.mtv.corp.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120905061632.GB3195@dhcp-172-17-108-109.mtv.corp.google.com> 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 Tue, Sep 04, 2012 at 11:16:32PM -0700, Tejun Heo wrote: > Currently, rebind_workers() and idle_worker_rebind() are two-way > interlocked. rebind_workers() waits for idle workers to finish > rebinding and rebound idle workers wait for rebind_workers() to finish > rebinding busy workers before proceeding. Applied to wq/for-3.6-fixes. Thanks. -- tejun