From nobody Sun Feb 8 11:22:01 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 352C0EB64D9 for ; Sat, 17 Jun 2023 08:31:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346178AbjFQIbV (ORCPT ); Sat, 17 Jun 2023 04:31:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234669AbjFQIbQ (ORCPT ); Sat, 17 Jun 2023 04:31:16 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DE3A10CF; Sat, 17 Jun 2023 01:31:14 -0700 (PDT) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Qjq4F2MQpzqSNm; Sat, 17 Jun 2023 16:31:09 +0800 (CST) Received: from huawei.com (10.175.104.170) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Sat, 17 Jun 2023 16:31:11 +0800 From: Miaohe Lin To: , , , CC: , , Subject: [PATCH] cgroup/cpuset: remove unneeded nodes_or() in cpuset_change_task_nodemask() Date: Sat, 17 Jun 2023 16:30:43 +0800 Message-ID: <20230617083043.2065556-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.104.170] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The tsk->mems_allowed is changed before calling mpol_rebind_task() and being reassigned right after it. But tsk->mems_allowed is not needed inside mpol_rebind_task(). So remove unneeded tsk->mems_allowed modify via nodes_or() here. Signed-off-by: Miaohe Lin --- kernel/cgroup/cpuset.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index 58e6f18f01c1..33a429c1179f 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -1941,7 +1941,6 @@ static void cpuset_change_task_nodemask(struct task_s= truct *tsk, local_irq_disable(); write_seqcount_begin(&tsk->mems_allowed_seq); =20 - nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems); mpol_rebind_task(tsk, newmems); tsk->mems_allowed =3D *newmems; =20 --=20 2.27.0