From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753843Ab3BDQ5P (ORCPT ); Mon, 4 Feb 2013 11:57:15 -0500 Received: from avon.wwwdotorg.org ([70.85.31.133]:55102 "EHLO avon.wwwdotorg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750773Ab3BDQ5O (ORCPT ); Mon, 4 Feb 2013 11:57:14 -0500 Message-ID: <510FE866.9090600@wwwdotorg.org> Date: Mon, 04 Feb 2013 09:57:10 -0700 From: Stephen Warren User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Shaohua Li CC: Shaohua Li , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linux-next@vger.kernel.org" , Andrew Morton , Rik van Riel , Minchan Kim , Joseph Lo Subject: Re: CPU hotplug hang due to "swap: make each swap partition have one address_space" References: <510C9DE9.9040207@wwwdotorg.org> <20130204023646.GA321@kernel.org> In-Reply-To: <20130204023646.GA321@kernel.org> X-Enigmail-Version: 1.4.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/03/2013 07:36 PM, 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. Yes, that patch fixes the issue for me, thanks.