From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-f70.google.com (mail-ed1-f70.google.com [209.85.208.70]) by kanga.kvack.org (Postfix) with ESMTP id AB5E76B0005 for ; Thu, 1 Nov 2018 05:58:37 -0400 (EDT) Received: by mail-ed1-f70.google.com with SMTP id i1-v6so9605741edc.1 for ; Thu, 01 Nov 2018 02:58:37 -0700 (PDT) Received: from mx1.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id r1-v6si8167985eje.142.2018.11.01.02.58.36 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 01 Nov 2018 02:58:36 -0700 (PDT) Date: Thu, 1 Nov 2018 10:58:34 +0100 From: Michal Hocko Subject: Re: Memory hotplug failed to offline on bare metal system of multiple nodes Message-ID: <20181101095834.GD23921@dhcp22.suse.cz> References: <20181101091055.GA15166@MiWiFi-R3L-srv> <20181101092212.GB23921@dhcp22.suse.cz> <20181101094243.GD14493@MiWiFi-R3L-srv> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181101094243.GD14493@MiWiFi-R3L-srv> Sender: owner-linux-mm@kvack.org List-ID: To: Baoquan He Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org On Thu 01-11-18 17:42:43, Baoquan He wrote: > On 11/01/18 at 10:22am, Michal Hocko wrote: > > > I haven't figured out why the above commit caused those memmory > > > block in MOVABL zone being not removable. Still checking. Attach the > > > tested reverting patch in this mail. > > > > Could you check which of the test inside has_unmovable_pages claimed the > > failure? Going back to marking movable_zone as guaranteed to offline is > > just too fragile. > > Sure, will add debugging code and check. Will update if anything found. Please dump the whole struct page state for the failing pfn. -- Michal Hocko SUSE Labs