From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753960Ab3BDEqM (ORCPT ); Sun, 3 Feb 2013 23:46:12 -0500 Received: from hqemgate03.nvidia.com ([216.228.121.140]:19737 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752355Ab3BDEqK (ORCPT ); Sun, 3 Feb 2013 23:46:10 -0500 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Sun, 03 Feb 2013 20:43:57 -0800 Subject: Re: CPU hotplug hang due to "swap: make each swap partition have one address_space" From: Joseph Lo To: Shaohua Li CC: Stephen Warren , Shaohua Li , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linux-next@vger.kernel.org" , Andrew Morton , Rik van Riel , Minchan Kim In-Reply-To: <20130204023646.GA321@kernel.org> References: <510C9DE9.9040207@wwwdotorg.org> <20130204023646.GA321@kernel.org> Date: Mon, 4 Feb 2013 12:45:44 +0800 Message-ID: <1359953144.5542.2.camel@jlo-ubuntu-64.nvidia.com> MIME-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2013-02-04 at 10:36 +0800, Shaohua Li wrote: > On Fri, Feb 01, 2013 at 10:02:33PM -0700, Stephen Warren wrote: > > Shaohua, > > > > In next-20130128, commit 174f064 "swap: make each swap partition have > > one address_space" (from the mm/akpm tree) appears causes a hang/RCU > > stall for me when hot-unplugging a CPU. > > does this one work for you? > http://marc.info/?l=linux-mm&m=135929599505624&w=2 > Or try a more recent linux-next. The patch is in akpm's tree. > Hi Shaohua, The patch you pointed out did fix the issue. Just verified on Tegra device. Thanks, Joseph