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=-8.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 4CA68C433DF for ; Mon, 24 Aug 2020 10:49:17 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 261DD2074D for ; Mon, 24 Aug 2020 10:49:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 261DD2074D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B081A6B0005; Mon, 24 Aug 2020 06:49:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AB71D6B0006; Mon, 24 Aug 2020 06:49:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 980876B0007; Mon, 24 Aug 2020 06:49:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0247.hostedemail.com [216.40.44.247]) by kanga.kvack.org (Postfix) with ESMTP id 7F0796B0005 for ; Mon, 24 Aug 2020 06:49:16 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 3A759181AEF1A for ; Mon, 24 Aug 2020 10:49:16 +0000 (UTC) X-FDA: 77185140312.25.blood10_4e0b04127052 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin25.hostedemail.com (Postfix) with ESMTP id 09A5F1804E3A8 for ; Mon, 24 Aug 2020 10:49:16 +0000 (UTC) X-HE-Tag: blood10_4e0b04127052 X-Filterd-Recvd-Size: 2046 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Mon, 24 Aug 2020 10:49:15 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 75C06AE17; Mon, 24 Aug 2020 10:49:44 +0000 (UTC) Date: Mon, 24 Aug 2020 12:49:12 +0200 From: Oscar Salvador To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michal Hocko , Andrew Morton , Wei Yang , Baoquan He , Pankaj Gupta Subject: Re: [PATCH v2 05/10] mm/memory_hotplug: drop nr_isolate_pageblock in offline_pages() Message-ID: <20200824104912.GE6315@linux> References: <20200819175957.28465-1-david@redhat.com> <20200819175957.28465-6-david@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200819175957.28465-6-david@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: 09A5F1804E3A8 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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 Wed, Aug 19, 2020 at 07:59:52PM +0200, David Hildenbrand wrote: > We make sure that we cannot have any memory holes right at the beginning > of offline_pages() and we only support to online/offline full sections. > Both, sections and pageblocks are a power of two in size, and sections > always span full pageblocks. > > We can directly calculate the number of isolated pageblocks from nr_pages. > > Acked-by: Michal Hocko > Cc: Andrew Morton > Cc: Michal Hocko > Cc: Wei Yang > Cc: Baoquan He > Cc: Pankaj Gupta > Cc: Oscar Salvador > Signed-off-by: David Hildenbrand Reviewed-by: Oscar Salvador -- Oscar Salvador SUSE L3