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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 84CEFC3A5A3 for ; Fri, 30 Aug 2019 06:01:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 504F4208CB for ; Fri, 30 Aug 2019 06:01:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567144864; bh=SrGSiLDFW91bBqdMJGtwIIp+a53Jx9aWuCoLpC2wAKU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=QjUPB/mNWAXFxgGaXUagMBTXJniHChl6UKRj+C2BZBbcQlB05cRvkZZY1xQSm3ARl RPL1CsjCkuh9D8hGn1FjQc4L40ka1ovtS4ZKZscIZn4lJ2p7cIGua3ru7t205GGMBy kAZXTo9Ib1bsZYAV6qFcmlsc0JLLHKGb/TKcSm+M= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727447AbfH3GBD (ORCPT ); Fri, 30 Aug 2019 02:01:03 -0400 Received: from mx2.suse.de ([195.135.220.15]:57742 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726334AbfH3GBC (ORCPT ); Fri, 30 Aug 2019 02:01:02 -0400 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) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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