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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 F144BC4332D for ; Fri, 20 Mar 2020 07:34:07 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B2F2C2051A for ; Fri, 20 Mar 2020 07:34:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="IHoSYerE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B2F2C2051A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3B5026B0003; Fri, 20 Mar 2020 03:34:07 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 366126B0006; Fri, 20 Mar 2020 03:34:07 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2540B6B0007; Fri, 20 Mar 2020 03:34:07 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0043.hostedemail.com [216.40.44.43]) by kanga.kvack.org (Postfix) with ESMTP id 0B3EC6B0003 for ; Fri, 20 Mar 2020 03:34:07 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id CF109824556B for ; Fri, 20 Mar 2020 07:34:06 +0000 (UTC) X-FDA: 76614926892.01.plate23_5e156cb13922c X-HE-Tag: plate23_5e156cb13922c X-Filterd-Recvd-Size: 3948 Received: from mail-qt1-f194.google.com (mail-qt1-f194.google.com [209.85.160.194]) by imf19.hostedemail.com (Postfix) with ESMTP for ; Fri, 20 Mar 2020 07:34:06 +0000 (UTC) Received: by mail-qt1-f194.google.com with SMTP id i9so3516397qtw.7 for ; Fri, 20 Mar 2020 00:34:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=C6YhhHeccU9Mplya57aCZ0zu3hccKv0+lu/NMMye7aU=; b=IHoSYerE0NjORsoFN1pj3/hfaNeUMVskyOfgKYQRAaXViccuLJe8srypa9vCqRlZbI KcMNY/1b0aCfUJr/GOrzlHiMfleCFaHP/SN3vge+eL+MabyLbP/Uzc+QBOp4+KFKMHea FoTreq8I84DKRrFEjR2ZlouUVTZRWScXYaSVJldXLT4/GT0jkleX/XGZWqdjpzJ5UvBj tNazr1NmE6PCKS6eTwA5Jom0ZZlGriv8AzefaF6meaUqvmY8acf0jYbDFbMauUd86cfB KO0GmqS2mnkTcdq9m5iK9xYUfO/0Y9a9l5lLmvv99/1gzh1ZarrbTI4lGXz4ajRUzJr1 72fQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=C6YhhHeccU9Mplya57aCZ0zu3hccKv0+lu/NMMye7aU=; b=ZyfAmicuH4FH88xYTQkaJhqJB8bJw6jKhN1nmPdznN32jFNQjfvCqmtHMnX5yxSqB/ 2f4dFA/hE4ipxDrD0BYvmdBDdLx6EEcTvedvqUOGiJLp0SJh4/ZDoXfnk4VwtIqCyeb6 z2I7ZRQAySFdv3gNqiqZGdHTL9cFBgbpQI7+ucRJIWVp0thMTfEEixUMZJ62oMyl0n+8 2k4++56q01phqdHJJVdHBp2U2PscEgMiyKb9aBNquDNc1UgPJM1sMaZWIDlb/tiLoCye RdCGfpGTpWfxofwmDxy6C82sJ26psv1TdZLiBS1ReAl+vUlsphxN6k44q9OXWQafdWVU 2Dag== X-Gm-Message-State: ANhLgQ2m+lknCJlCFmjXCYZ0ChVLfHo/Yz5Ebz4yJcNyybppyoi3IIgG ydzKo7x0GJlyFx4oAQ2rf47ng/90lk7b/U0E6nA= X-Google-Smtp-Source: ADFU+vuO3ncUFcoeEbtYRW8NnoTD0tMhHs04dbeyO/eyX2ksoQMwBi7FHKSuEMV7ESdjD69XJ/X96nTNBtqWPIZoVdo= X-Received: by 2002:aed:3346:: with SMTP id u64mr6488332qtd.333.1584689645829; Fri, 20 Mar 2020 00:34:05 -0700 (PDT) MIME-Version: 1.0 References: <1584502378-12609-1-git-send-email-iamjoonsoo.kim@lge.com> <1584502378-12609-2-git-send-email-iamjoonsoo.kim@lge.com> <9a7c94c0-c2b2-d533-316a-4fd42bdf55b1@suse.cz> In-Reply-To: <9a7c94c0-c2b2-d533-316a-4fd42bdf55b1@suse.cz> From: Joonsoo Kim Date: Fri, 20 Mar 2020 16:33:54 +0900 Message-ID: Subject: Re: [PATCH v2 1/2] mm/page_alloc: use ac->high_zoneidx for classzone_idx To: Vlastimil Babka Cc: David Rientjes , Andrew Morton , Linux Memory Management List , LKML , Johannes Weiner , Michal Hocko , Minchan Kim , Mel Gorman , kernel-team@lge.com, Ye Xiaolong , Joonsoo Kim Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000344, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 2020=EB=85=84 3=EC=9B=94 19=EC=9D=BC (=EB=AA=A9) =EC=98=A4=ED=9B=84 9:21, V= lastimil Babka =EB=8B=98=EC=9D=B4 =EC=9E=91=EC=84=B1: > > On 3/19/20 9:57 AM, Joonsoo Kim wrote: > >> Curious: is this only an issue when vm.numa_zonelist_order is set to N= ode? > > > > Do you mean "/proc/sys/vm/numa_zonelist_order"? It looks like it's gone= now. > > > > Thanks. > > Yes it's gone now, but indeed, AFAIU on older kernels with zone order ins= tead of > node order, this problem wouldn't manifest. Yes. In this case, preferred_zone of an allocation is the populated highest= zone among all nodes so classzone_idx will the same. Thanks.