From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93A5BC3A5A6 for ; Fri, 30 Aug 2019 06:01:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6A7BC2186A for ; Fri, 30 Aug 2019 06:01:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A7BC2186A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 067A26B000D; Fri, 30 Aug 2019 02:01:04 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F32916B000E; Fri, 30 Aug 2019 02:01:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E21236B0010; Fri, 30 Aug 2019 02:01:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0243.hostedemail.com [216.40.44.243]) by kanga.kvack.org (Postfix) with ESMTP id BADB46B000D for ; Fri, 30 Aug 2019 02:01:03 -0400 (EDT) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id 5F1A71F21B for ; Fri, 30 Aug 2019 06:01:03 +0000 (UTC) X-FDA: 75878046006.22.fork51_7d96f0953c42c X-HE-Tag: fork51_7d96f0953c42c X-Filterd-Recvd-Size: 1992 Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Fri, 30 Aug 2019 06:01:02 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id A4AB4B682; Fri, 30 Aug 2019 06:01:01 +0000 (UTC) Date: Fri, 30 Aug 2019 08:01:00 +0200 From: Michal Hocko To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Oscar Salvador , Pavel Tatashin , Dan Williams , Wei Yang Subject: Re: [PATCH v2 3/6] mm/memory_hotplug: Process all zones when removing memory Message-ID: <20190830060100.GP28313@dhcp22.suse.cz> References: <20190826101012.10575-1-david@redhat.com> <20190826101012.10575-4-david@redhat.com> <20190829153936.GJ28313@dhcp22.suse.cz> <20190829162704.GL28313@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu 29-08-19 18:59:31, David Hildenbrand wrote: > On 29.08.19 18:27, Michal Hocko wrote: [...] > > No rush, really... It seems this is quite unlikely event as most hotplug > > usecases simply online memory before removing it later on. > > > > I can trigger it reliably right now while working/testing virtio-mem, so > I finally want to clean up this mess :) (has been on my list for a long > time). I'll try to hunt for the right commit id's that broke it. f1dd2cd13c4b ("mm, memory_hotplug: do not associate hotadded memory to zones until online") -- Michal Hocko SUSE Labs