Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751920AbdDFPll (ORCPT ); Thu, 6 Apr 2017 11:41:41 -0400 Received: from mx2.suse.de ([195.135.220.15]:58215 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751180AbdDFPld (ORCPT ); Thu, 6 Apr 2017 11:41:33 -0400 Date: Thu, 6 Apr 2017 17:41:28 +0200 From: Michal Hocko To: Reza Arbab Cc: linux-mm@kvack.org, Andrew Morton , Mel Gorman , Vlastimil Babka , Andrea Arcangeli , Yasuaki Ishimatsu , Tang Chen , qiuxishi@huawei.com, Kani Toshimitsu , slaoub@gmail.com, Joonsoo Kim , Andi Kleen , Zhang Zhen , David Rientjes , Daniel Kiper , Igor Mammedov , Vitaly Kuznetsov , LKML , Chris Metcalf , Dan Williams , Heiko Carstens , Lai Jiangshan , Martin Schwidefsky Subject: Re: [PATCH 0/6] mm: make movable onlining suck less Message-ID: <20170406154127.GQ5497@dhcp22.suse.cz> References: <20170330115454.32154-1-mhocko@kernel.org> <20170406130846.GL5497@dhcp22.suse.cz> <20170406152449.zmghwdb4y6hxn4pm@arbab-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170406152449.zmghwdb4y6hxn4pm@arbab-laptop> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1029 Lines: 27 On Thu 06-04-17 10:24:49, Reza Arbab wrote: > On Thu, Apr 06, 2017 at 03:08:46PM +0200, Michal Hocko wrote: > >OK, so after recent change mostly driven by testing from Reza Arbab > >(thanks again) I believe I am getting to a working state finally. All I > >currently have is > >in git://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git tree > >attempts/rewrite-mem_hotplug-WIP branch. I will highly appreciate more > >testing of course and if there are no new issues found I will repost the > >series for the review. > > Looking good! I can do my add/remove/repeat test and things seem fine. > > One thing--starting on the second iteration, I am seeing the WARN in > free_area_init_node(); > > add_memory > add_memory_resource > hotadd_new_pgdat > free_area_init_node > WARN_ON(pgdat->nr_zones || pgdat->kswapd_classzone_idx); Have you tested with my attempts/rewrite-mem_hotplug-WIP mentioned elsewhere? Because I suspect that "mm: get rid of zone_is_initialized" might cause this. -- Michal Hocko SUSE Labs