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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 C42DFC41514 for ; Wed, 24 Jul 2019 15:49:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 72F1921951 for ; Wed, 24 Jul 2019 15:49:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 72F1921951 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 16B8F6B0008; Wed, 24 Jul 2019 11:49:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 11DFE6B000A; Wed, 24 Jul 2019 11:49:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F25BF8E0005; Wed, 24 Jul 2019 11:49:18 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by kanga.kvack.org (Postfix) with ESMTP id D0E076B0008 for ; Wed, 24 Jul 2019 11:49:18 -0400 (EDT) Received: by mail-qk1-f197.google.com with SMTP id c1so39622232qkl.7 for ; Wed, 24 Jul 2019 08:49:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:subject:to:cc :references:from:openpgp:autocrypt:organization:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=u3WNZO46Qtub2HafaFp0g7WtD3dqViZQ5ES67Yb4H7g=; b=FnL+zPv1OhVLUdMP5Pczj4s7setZzne0O4l2yzRARpKpQEpzIUN+ashqwtQBHc9zIl YzoCkPrLosuWnajOHKR/ZCi52OCzbFn7gXExMx/3GKUvY4/nLzaxpBJX4jnwQh7mwB/i saVc46zkKPPrTDbElcp/Vrw0OLT1v9JiWQBm6Qm+vwtFAEu8/t1Ay489Jv9Pm5StzTqg L7xuGtXC7l6lf51sMFYnrYL5JPxlpcc34bkAKyanL62bqYgFkspX0myWhtRKVYRlD0r4 smzDYA1xKEWHQKnrYLGMiVASucC4YpI6cov9Tiwgw+CxL/YF1vdUHVC3adm1P/akqWxL IB2w== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of david@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com X-Gm-Message-State: APjAAAVAfoEAIuruW+JQvrc+AiJTpniaDeWuWTPYRWleNjADlRknhS6J Fr9ImmHDw1+j0nQBeQ0n8NVRUDq7PZfl474Y0n6T7gTNCeedgcNEc6Quwx2QjzzctxjSwmctQps mW8smTlEms8bAvctkf3pBIodMz8YP3VG/ienuNCXk4T+D1ICzCKCyq+EI8xkV38J8SA== X-Received: by 2002:a37:648:: with SMTP id 69mr55102721qkg.248.1563983358642; Wed, 24 Jul 2019 08:49:18 -0700 (PDT) X-Google-Smtp-Source: APXvYqwmxwSj5GovLDVc0HKTjQfGlWD4lQfVo9h4RpQgAroM8s9x93N42jBU44qsTV6c07x0P502 X-Received: by 2002:a37:648:: with SMTP id 69mr55102684qkg.248.1563983358079; Wed, 24 Jul 2019 08:49:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1563983358; cv=none; d=google.com; s=arc-20160816; b=HFZkPAa+wfPxAV7X7rB0+dVYWvKRTWxbWSpE2UW0I3isGaOk4AVDnMwjonYiGaL9fZ JKjOIHDF1USwgG9I1BpGSsBSIIzBeZd/A2HsWVk1cN3Qn3KzARDFHtxpOQz4GNt2KCgu T0ZvSLzTL4YqnjbA7Hi1m29KWC9Bx8hrLw9EnPvIkKUJYspvA9KIhlNn0IRDn6pSa4rL WDfXdtLdRZ5op2uPlMftEVgHxIyO9DYIbOqiUzKOrY4dlk3zGGWasHvpbOpEiCAYMoFx NrFCp3Caw49bhcLva5Dt59ZGhoiM3/QfuPWdPuDImWDTjCuokU513XxALCvhBvpS5UrC mZPg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:content-language:in-reply-to:mime-version :user-agent:date:message-id:organization:autocrypt:openpgp:from :references:cc:to:subject; bh=u3WNZO46Qtub2HafaFp0g7WtD3dqViZQ5ES67Yb4H7g=; b=Spl3jI4/2pVZwCBKlEEgVYOOqK1iZjb/jhcc3dwieGIdzjYmkqmFqrDMHCE8QVq5BX 67h8Cl89YfwR6vgszJwwrioGpUbMg3prWErbSfZaCnu7ZG39rwGw/e4hQHg0mmreu52a NNHjV+8FMMyaB6AskWhAST5uzvdZEFA6LOXxDaWScAgo03MzgWhEbcld/IiKilar4fOX RfxXS9TUkonC8BfoMAYQSugwq+RhAAf4TgpshgWjLjvhMvkD+fqVDoVFOLEimzkAlRvk sjtmqzNXtP7gKr+3G8bZXVrwGN6nQzfPzFsdnLpK/cG/dk0n2yexpF2gXLH92s3jEU6h m6RA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of david@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id p125si26813931qkc.197.2019.07.24.08.49.17 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Jul 2019 08:49:18 -0700 (PDT) Received-SPF: pass (google.com: domain of david@redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; Authentication-Results: mx.google.com; spf=pass (google.com: domain of david@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 362EC30860BD; Wed, 24 Jul 2019 15:49:17 +0000 (UTC) Received: from [10.36.117.47] (ovpn-117-47.ams2.redhat.com [10.36.117.47]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9D25A60605; Wed, 24 Jul 2019 15:49:15 +0000 (UTC) Subject: Re: [PATCH v1] mm/memory_hotplug: Remove move_pfn_range() To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, Andrew Morton , Oscar Salvador , Michal Hocko , Pavel Tatashin , Dan Williams References: <20190724142324.3686-1-david@redhat.com> From: David Hildenbrand Openpgp: preference=signencrypt Autocrypt: addr=david@redhat.com; prefer-encrypt=mutual; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwX4EEwECACgFAljj9eoCGwMFCQlmAYAGCwkI BwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEE3eEPcA/4Na5IIP/3T/FIQMxIfNzZshIq687qgG 8UbspuE/YSUDdv7r5szYTK6KPTlqN8NAcSfheywbuYD9A4ZeSBWD3/NAVUdrCaRP2IvFyELj xoMvfJccbq45BxzgEspg/bVahNbyuBpLBVjVWwRtFCUEXkyazksSv8pdTMAs9IucChvFmmq3 jJ2vlaz9lYt/lxN246fIVceckPMiUveimngvXZw21VOAhfQ+/sofXF8JCFv2mFcBDoa7eYob s0FLpmqFaeNRHAlzMWgSsP80qx5nWWEvRLdKWi533N2vC/EyunN3HcBwVrXH4hxRBMco3jvM m8VKLKao9wKj82qSivUnkPIwsAGNPdFoPbgghCQiBjBe6A75Z2xHFrzo7t1jg7nQfIyNC7ez MZBJ59sqA9EDMEJPlLNIeJmqslXPjmMFnE7Mby/+335WJYDulsRybN+W5rLT5aMvhC6x6POK z55fMNKrMASCzBJum2Fwjf/VnuGRYkhKCqqZ8gJ3OvmR50tInDV2jZ1DQgc3i550T5JDpToh dPBxZocIhzg+MBSRDXcJmHOx/7nQm3iQ6iLuwmXsRC6f5FbFefk9EjuTKcLMvBsEx+2DEx0E UnmJ4hVg7u1PQ+2Oy+Lh/opK/BDiqlQ8Pz2jiXv5xkECvr/3Sv59hlOCZMOaiLTTjtOIU7Tq 7ut6OL64oAq+zsFNBFXLn5EBEADn1959INH2cwYJv0tsxf5MUCghCj/CA/lc/LMthqQ773ga uB9mN+F1rE9cyyXb6jyOGn+GUjMbnq1o121Vm0+neKHUCBtHyseBfDXHA6m4B3mUTWo13nid 0e4AM71r0DS8+KYh6zvweLX/LL5kQS9GQeT+QNroXcC1NzWbitts6TZ+IrPOwT1hfB4WNC+X 2n4AzDqp3+ILiVST2DT4VBc11Gz6jijpC/KI5Al8ZDhRwG47LUiuQmt3yqrmN63V9wzaPhC+ xbwIsNZlLUvuRnmBPkTJwwrFRZvwu5GPHNndBjVpAfaSTOfppyKBTccu2AXJXWAE1Xjh6GOC 8mlFjZwLxWFqdPHR1n2aPVgoiTLk34LR/bXO+e0GpzFXT7enwyvFFFyAS0Nk1q/7EChPcbRb hJqEBpRNZemxmg55zC3GLvgLKd5A09MOM2BrMea+l0FUR+PuTenh2YmnmLRTro6eZ/qYwWkC u8FFIw4pT0OUDMyLgi+GI1aMpVogTZJ70FgV0pUAlpmrzk/bLbRkF3TwgucpyPtcpmQtTkWS gDS50QG9DR/1As3LLLcNkwJBZzBG6PWbvcOyrwMQUF1nl4SSPV0LLH63+BrrHasfJzxKXzqg rW28CTAE2x8qi7e/6M/+XXhrsMYG+uaViM7n2je3qKe7ofum3s4vq7oFCPsOgwARAQABwsFl BBgBAgAPBQJVy5+RAhsMBQkJZgGAAAoJEE3eEPcA/4NagOsP/jPoIBb/iXVbM+fmSHOjEshl KMwEl/m5iLj3iHnHPVLBUWrXPdS7iQijJA/VLxjnFknhaS60hkUNWexDMxVVP/6lbOrs4bDZ NEWDMktAeqJaFtxackPszlcpRVkAs6Msn9tu8hlvB517pyUgvuD7ZS9gGOMmYwFQDyytpepo YApVV00P0u3AaE0Cj/o71STqGJKZxcVhPaZ+LR+UCBZOyKfEyq+ZN311VpOJZ1IvTExf+S/5 lqnciDtbO3I4Wq0ArLX1gs1q1XlXLaVaA3yVqeC8E7kOchDNinD3hJS4OX0e1gdsx/e6COvy qNg5aL5n0Kl4fcVqM0LdIhsubVs4eiNCa5XMSYpXmVi3HAuFyg9dN+x8thSwI836FoMASwOl C7tHsTjnSGufB+D7F7ZBT61BffNBBIm1KdMxcxqLUVXpBQHHlGkbwI+3Ye+nE6HmZH7IwLwV W+Ajl7oYF+jeKaH4DZFtgLYGLtZ1LDwKPjX7VAsa4Yx7S5+EBAaZGxK510MjIx6SGrZWBrrV TEvdV00F2MnQoeXKzD7O4WFbL55hhyGgfWTHwZ457iN9SgYi1JLPqWkZB0JRXIEtjd4JEQcx +8Umfre0Xt4713VxMygW0PnQt5aSQdMD58jHFxTk092mU+yIHj5LeYgvwSgZN4airXk5yRXl SE+xAvmumFBY Organization: Red Hat GmbH Message-ID: <13696564-d696-111d-0cf5-b0c9e1a2e051@redhat.com> Date: Wed, 24 Jul 2019 17:49:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <20190724142324.3686-1-david@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Wed, 24 Jul 2019 15:49:17 +0000 (UTC) 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 24.07.19 16:23, David Hildenbrand wrote: > Let's remove this indirection. We need the zone in the caller either > way, so let's just detect it there. Add some documentation for > move_pfn_range_to_zone() instead. > > Cc: Andrew Morton > Cc: Oscar Salvador > Cc: Michal Hocko > Cc: David Hildenbrand > Cc: Pavel Tatashin > Cc: Dan Williams > Signed-off-by: David Hildenbrand > --- > mm/memory_hotplug.c | 23 +++++++---------------- > 1 file changed, 7 insertions(+), 16 deletions(-) > > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index efa5283be36c..e7c3b219a305 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -715,7 +715,11 @@ static void __meminit resize_pgdat_range(struct pglist_data *pgdat, unsigned lon > > pgdat->node_spanned_pages = max(start_pfn + nr_pages, old_end_pfn) - pgdat->node_start_pfn; > } > - ^ whoops, deleted this empty line by mistake - it should stay of course. Can resend. > +/* > + * Associate the pfn range with the given zone, initializing the memmaps > + * and resizing the pgdat/zone data to span the added pages. After this > + * call, all affected pages are PG_reserved. > + */ > void __ref move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn, > unsigned long nr_pages, struct vmem_altmap *altmap) > { > @@ -804,20 +808,6 @@ struct zone * zone_for_pfn_range(int online_type, int nid, unsigned start_pfn, > return default_zone_for_pfn(nid, start_pfn, nr_pages); > } > > -/* > - * Associates the given pfn range with the given node and the zone appropriate > - * for the given online type. > - */ > -static struct zone * __meminit move_pfn_range(int online_type, int nid, > - unsigned long start_pfn, unsigned long nr_pages) > -{ > - struct zone *zone; > - > - zone = zone_for_pfn_range(online_type, nid, start_pfn, nr_pages); > - move_pfn_range_to_zone(zone, start_pfn, nr_pages, NULL); > - return zone; > -} > - > int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_type) > { > unsigned long flags; > @@ -840,7 +830,8 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ > put_device(&mem->dev); > > /* associate pfn range with the zone */ > - zone = move_pfn_range(online_type, nid, pfn, nr_pages); > + zone = zone_for_pfn_range(online_type, nid, pfn, nr_pages); > + move_pfn_range_to_zone(zone, pfn, nr_pages, NULL); > > arg.start_pfn = pfn; > arg.nr_pages = nr_pages; > -- Thanks, David / dhildenb