From patchwork Tue Aug 3 05:59:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng Tang X-Patchwork-Id: 12415417 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 A11F9C4338F for ; Tue, 3 Aug 2021 05:59:48 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 56EE561029 for ; Tue, 3 Aug 2021 05:59:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 56EE561029 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 00F796B0072; Tue, 3 Aug 2021 01:59:48 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F038F6B0073; Tue, 3 Aug 2021 01:59:47 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DFC5A6B0074; Tue, 3 Aug 2021 01:59:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0063.hostedemail.com [216.40.44.63]) by kanga.kvack.org (Postfix) with ESMTP id C03046B0072 for ; Tue, 3 Aug 2021 01:59:47 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 729E61C303 for ; Tue, 3 Aug 2021 05:59:47 +0000 (UTC) X-FDA: 78432718014.14.C86EEB2 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by imf18.hostedemail.com (Postfix) with ESMTP id EFB4B4005FE5 for ; Tue, 3 Aug 2021 05:59:46 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10064"; a="213579914" X-IronPort-AV: E=Sophos;i="5.84,291,1620716400"; d="scan'208";a="213579914" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Aug 2021 22:59:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,291,1620716400"; d="scan'208";a="479233401" Received: from shbuild999.sh.intel.com ([10.239.146.151]) by fmsmga008.fm.intel.com with ESMTP; 02 Aug 2021 22:59:43 -0700 From: Feng Tang To: linux-mm@kvack.org, Andrew Morton , Michal Hocko , David Rientjes , Dave Hansen , Ben Widawsky Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Andrea Arcangeli , Mel Gorman , Mike Kravetz , Randy Dunlap , Vlastimil Babka , Andi Kleen , Dan Williams , ying.huang@intel.com, Feng Tang Subject: [PATCH v7 5/5] mm/mempolicy: unify the create() func for bind/interleave/prefer-many policies Date: Tue, 3 Aug 2021 13:59:22 +0800 Message-Id: <1627970362-61305-6-git-send-email-feng.tang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1627970362-61305-1-git-send-email-feng.tang@intel.com> References: <1627970362-61305-1-git-send-email-feng.tang@intel.com> Authentication-Results: imf18.hostedemail.com; dkim=none; spf=none (imf18.hostedemail.com: domain of feng.tang@intel.com has no SPF policy when checking 134.134.136.24) smtp.mailfrom=feng.tang@intel.com; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=intel.com (policy=none) X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: EFB4B4005FE5 X-Stat-Signature: 8d94chzzs55ika4w6hkp5z6ekzr4y8ya X-HE-Tag: 1627970386-513184 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: As they all do the same thing: sanity check and save nodemask info, create one mpol_new_nodemask() to reduce redundancy. Signed-off-by: Feng Tang Acked-by: Michal Hocko --- mm/mempolicy.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index e437fe96acd0..14710960d1d4 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -192,7 +192,7 @@ static void mpol_relative_nodemask(nodemask_t *ret, const nodemask_t *orig, nodes_onto(*ret, tmp, *rel); } -static int mpol_new_interleave(struct mempolicy *pol, const nodemask_t *nodes) +static int mpol_new_nodemask(struct mempolicy *pol, const nodemask_t *nodes) { if (nodes_empty(*nodes)) return -EINVAL; @@ -210,22 +210,6 @@ static int mpol_new_preferred(struct mempolicy *pol, const nodemask_t *nodes) return 0; } -static int mpol_new_preferred_many(struct mempolicy *pol, const nodemask_t *nodes) -{ - if (nodes_empty(*nodes)) - return -EINVAL; - pol->nodes = *nodes; - return 0; -} - -static int mpol_new_bind(struct mempolicy *pol, const nodemask_t *nodes) -{ - if (nodes_empty(*nodes)) - return -EINVAL; - pol->nodes = *nodes; - return 0; -} - /* * mpol_set_nodemask is called after mpol_new() to set up the nodemask, if * any, for the new policy. mpol_new() has already validated the nodes @@ -405,7 +389,7 @@ static const struct mempolicy_operations mpol_ops[MPOL_MAX] = { .rebind = mpol_rebind_default, }, [MPOL_INTERLEAVE] = { - .create = mpol_new_interleave, + .create = mpol_new_nodemask, .rebind = mpol_rebind_nodemask, }, [MPOL_PREFERRED] = { @@ -413,14 +397,14 @@ static const struct mempolicy_operations mpol_ops[MPOL_MAX] = { .rebind = mpol_rebind_preferred, }, [MPOL_BIND] = { - .create = mpol_new_bind, + .create = mpol_new_nodemask, .rebind = mpol_rebind_nodemask, }, [MPOL_LOCAL] = { .rebind = mpol_rebind_default, }, [MPOL_PREFERRED_MANY] = { - .create = mpol_new_preferred_many, + .create = mpol_new_nodemask, .rebind = mpol_rebind_preferred, }, };