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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 88546C4321D for ; Thu, 16 Aug 2018 18:43:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 41DB021473 for ; Thu, 16 Aug 2018 18:43:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 41DB021473 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729080AbeHPVnr (ORCPT ); Thu, 16 Aug 2018 17:43:47 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:48230 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725947AbeHPVnq (ORCPT ); Thu, 16 Aug 2018 17:43:46 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id ECB4C407605F; Thu, 16 Aug 2018 18:43:37 +0000 (UTC) Received: from [10.36.116.35] (ovpn-116-35.ams2.redhat.com [10.36.116.35]) by smtp.corp.redhat.com (Postfix) with ESMTP id E47981134CA8; Thu, 16 Aug 2018 18:43:34 +0000 (UTC) Subject: Re: [PATCH v3 4/4] mm/memory_hotplug: Drop node_online check in unregister_mem_sect_under_nodes To: Oscar Salvador , akpm@linux-foundation.org Cc: mhocko@suse.com, vbabka@suse.cz, dan.j.williams@intel.com, yasu.isimatu@gmail.com, jonathan.cameron@huawei.com, Pavel.Tatashin@microsoft.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador References: <20180815144219.6014-1-osalvador@techadventures.net> <20180815144219.6014-5-osalvador@techadventures.net> From: David Hildenbrand Openpgp: preference=signencrypt Autocrypt: addr=david@redhat.com; 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Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180815144219.6014-5-osalvador@techadventures.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 16 Aug 2018 18:43:38 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 16 Aug 2018 18:43:38 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15.08.2018 16:42, Oscar Salvador wrote: > From: Oscar Salvador > > We are getting the nid from the pages that are not yet removed, > but a node can only be offline when its memory/cpu's have been removed. > Therefore, we know that the node is still online. > > Signed-off-by: Oscar Salvador > --- > drivers/base/node.c | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/drivers/base/node.c b/drivers/base/node.c > index 81b27b5b1f15..b23769e4fcbb 100644 > --- a/drivers/base/node.c > +++ b/drivers/base/node.c > @@ -465,8 +465,6 @@ void unregister_mem_sect_under_nodes(struct memory_block *mem_blk, > > if (nid < 0) > continue; > - if (!node_online(nid)) > - continue; > /* > * It is possible that NODEMASK_ALLOC fails due to memory > * pressure. > Sounds reasonable to me Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb