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=-9.7 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_GIT 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 EF53FC433DF for ; Fri, 19 Jun 2020 16:25:39 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BF032217A0 for ; Fri, 19 Jun 2020 16:25:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BF032217A0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id AB60C8D00EB; Fri, 19 Jun 2020 12:24:48 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A0ADF8D00E7; Fri, 19 Jun 2020 12:24:48 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 791638D00EB; Fri, 19 Jun 2020 12:24:48 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0249.hostedemail.com [216.40.44.249]) by kanga.kvack.org (Postfix) with ESMTP id 514228D00E9 for ; Fri, 19 Jun 2020 12:24:48 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 0EE4F181ACC80 for ; Fri, 19 Jun 2020 16:24:48 +0000 (UTC) X-FDA: 76946485056.29.judge17_3501efc26e1a Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin29.hostedemail.com (Postfix) with ESMTP id D60D718086CA6 for ; Fri, 19 Jun 2020 16:24:47 +0000 (UTC) X-HE-Tag: judge17_3501efc26e1a X-Filterd-Recvd-Size: 3280 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by imf40.hostedemail.com (Postfix) with ESMTP for ; Fri, 19 Jun 2020 16:24:46 +0000 (UTC) IronPort-SDR: /vZFDijiQjPG1GYQt6wfMaAJyNwXG9dew61jAdYKiA7RxqztzarhmpQXCi4js/rN6nIRZJZWfC d+qUCCsq7XqQ== X-IronPort-AV: E=McAfee;i="6000,8403,9657"; a="140535483" X-IronPort-AV: E=Sophos;i="5.75,256,1589266800"; d="scan'208";a="140535483" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jun 2020 09:24:16 -0700 IronPort-SDR: 1r3UzQuC4NB13l3s5Lpw5U2T3vafL4PQuxAkwoZU8WNKPOqCx8JerTj0HMknUJg1P7DmDhnd6P j8eYOtQ2JgJA== X-IronPort-AV: E=Sophos;i="5.75,255,1589266800"; d="scan'208";a="264366334" Received: from sjiang-mobl2.ccr.corp.intel.com (HELO bwidawsk-mobl5.local) ([10.252.131.131]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jun 2020 09:24:16 -0700 From: Ben Widawsky To: linux-mm Subject: [PATCH 07/18] mm/mempolicy: allow preferred code to take a nodemask Date: Fri, 19 Jun 2020 09:24:03 -0700 Message-Id: <20200619162414.1052234-8-ben.widawsky@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200619162414.1052234-1-ben.widawsky@intel.com> References: <20200619162414.1052234-1-ben.widawsky@intel.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: D60D718086CA6 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 Content-Transfer-Encoding: quoted-printable 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: From: Dave Hansen Create a helper function (mpol_new_preferred_many()) which is usable both by the old, single-node MPOL_PREFERRED and the new MPOL_PREFERRED_MANY. Enforce the old single-node MPOL_PREFERRED behavior in the "new" version of mpol_new_preferred() which calls mpol_new_preferred_many(). Cc: Andrew Morton Signed-off-by: Dave Hansen Signed-off-by: Ben Widawsky --- mm/mempolicy.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 6c7301cefeb6..541675a5b947 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -203,17 +203,30 @@ static int mpol_new_interleave(struct mempolicy *po= l, const nodemask_t *nodes) return 0; } =20 -static int mpol_new_preferred(struct mempolicy *pol, const nodemask_t *n= odes) +static int mpol_new_preferred_many(struct mempolicy *pol, + const nodemask_t *nodes) { if (!nodes) pol->flags |=3D MPOL_F_LOCAL; /* local allocation */ else if (nodes_empty(*nodes)) return -EINVAL; /* no allowed nodes */ else - pol->v.preferred_nodes =3D nodemask_of_node(first_node(*nodes)); + pol->v.preferred_nodes =3D *nodes; return 0; } =20 +static int mpol_new_preferred(struct mempolicy *pol, const nodemask_t *n= odes) +{ + if (nodes) { + /* MPOL_PREFERRED can only take a single node: */ + nodemask_t tmp =3D nodemask_of_node(first_node(*nodes)); + + return mpol_new_preferred_many(pol, &tmp); + } + + return mpol_new_preferred_many(pol, NULL); +} + static int mpol_new_bind(struct mempolicy *pol, const nodemask_t *nodes) { if (nodes_empty(*nodes)) --=20 2.27.0