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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 989C3C433EF for ; Wed, 13 Oct 2021 13:16:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 62055610FC for ; Wed, 13 Oct 2021 13:16:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 62055610FC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id D9FF16B006C; Wed, 13 Oct 2021 09:16:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D771E6B0071; Wed, 13 Oct 2021 09:16:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CB40F6B0072; Wed, 13 Oct 2021 09:16:15 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0102.hostedemail.com [216.40.44.102]) by kanga.kvack.org (Postfix) with ESMTP id C102B6B006C for ; Wed, 13 Oct 2021 09:16:15 -0400 (EDT) Received: from smtpin39.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 7D7C22931B for ; Wed, 13 Oct 2021 13:16:15 +0000 (UTC) X-FDA: 78691462710.39.699E138 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by imf18.hostedemail.com (Postfix) with ESMTP id C0789400208E for ; Wed, 13 Oct 2021 13:16:14 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10135"; a="250839731" X-IronPort-AV: E=Sophos;i="5.85,371,1624345200"; d="scan'208";a="250839731" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2021 06:16:12 -0700 X-IronPort-AV: E=Sophos;i="5.85,371,1624345200"; d="scan'208";a="592168846" Received: from akleen-mobl1.amr.corp.intel.com (HELO [10.209.98.136]) ([10.209.98.136]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2021 06:16:10 -0700 Message-ID: <83483424-e617-51c4-d55c-6106e66e2659@linux.intel.com> Date: Wed, 13 Oct 2021 06:16:09 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [RFC PATCH] mm/mempolicy: add MPOL_PREFERRED_STRICT memory policy Content-Language: en-US To: "Aneesh Kumar K.V" , linux-mm@kvack.org Cc: akpm@linux-foundation.org, Ben Widawsky , Dave Hansen , Feng Tang , Michal Hocko , Andrea Arcangeli , Mel Gorman , Mike Kravetz , Randy Dunlap , Vlastimil Babka , Dan Williams , Huang Ying References: <20211013094539.962357-1-aneesh.kumar@linux.ibm.com> From: Andi Kleen In-Reply-To: <20211013094539.962357-1-aneesh.kumar@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: C0789400208E X-Stat-Signature: yq1ma54psthmhfjmn6gc979xep58pzjj Authentication-Results: imf18.hostedemail.com; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=intel.com (policy=none); spf=none (imf18.hostedemail.com: domain of ak@linux.intel.com has no SPF policy when checking 192.55.52.88) smtp.mailfrom=ak@linux.intel.com X-HE-Tag: 1634130974-794713 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: > The difference with MPOL_BIND is the ability to specify a preferred node > which is the first node in the nodemask argument passed. That's always the one with the lowest number. Isn't that quite limiting in practice? It seems if you really want to do that you would need another argument. -Andi