From patchwork Sun Aug 13 01:51:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li kunyu X-Patchwork-Id: 134382 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b824:0:b0:3f2:4152:657d with SMTP id z4csp965673vqi; Fri, 11 Aug 2023 02:37:58 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFg1qISq+OSdKCTqexZJ1wUhA7UgraL67SzznnrzvNl0+87zSmJOqRCz+rOsJmqvud5ubok X-Received: by 2002:a05:6a20:3947:b0:135:293b:efaf with SMTP id r7-20020a056a20394700b00135293befafmr1766835pzg.10.1691746678372; Fri, 11 Aug 2023 02:37:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1691746678; cv=none; d=google.com; s=arc-20160816; b=GfnEE/Ykj0IEMgZAnglWtQA2BfWXDxxbt7st4Swxw34Z02IODUMmJXfZ6rn1+PONQi n15tjrsAXBnVEiGR/t/NWLnbyst+cfPMRDKawF2/aMjdlx1SSWNJUXA1rMj64kBZ8SNb HOoS6hURAaRMp9FMe/g1vaK2zqAcCRcoZvN6H7/yUtHvmWvbdDkQbGwtiuZ05/C+ZU0H NL2ycF/BWPhdLSYMPrrFG/1SbhVkBdZaYeep7hUSRyCXRYghrMgUqaeff1yu2wLfzXwT Xd0+Q5zNdPayU6Ji5VVL3gcSumQBbehLSV4D1xcSAXrrHzbiv0Z0x4ltjORGxIlrB0HM L6NA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=W+/idrs+eiiQMYOwW8rrPcR0lIT90JW+gKfgSauCAsY=; fh=3vtYlIUzX5mvgfEsHX1c04bXxEfZZPfgCfm1sZQSCmc=; b=L8DcQSxzrHG1NRHO7KEHwhuQCkAVVwt0AHKY1q4mxoCXWD/XHH6XD8WSzCKqsbUKvs 9rjmDDR5Xb9kZaSO5vnCw3iYHHDvpHnEx5ZwgAOOv7RX4C6FblFIc4EmZtcJqgx1Pjgz 5Zbi7PfL+o5G+WriJaNNQk6/2D25B94fnU6DSd/LAjixjdYSyJyTSuJmRLmSixRjr3Nu b5kiw4b1+uf2Q4v8uEQTvmuVowT7ElGCl/JgC9fz+WNV1dopgIIWyaykRAltwB27Cotb uPH5wZ8X/zJQOGMvnamL2F66MBbk0hv69Vh8FitjBf9zacFH+Ejj6xYK1rC3YMaofVTr w+9g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id n17-20020a170903111100b001b89fd6bec4si3201802plh.144.2023.08.11.02.37.43; Fri, 11 Aug 2023 02:37:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234863AbjHKJUf (ORCPT + 99 others); Fri, 11 Aug 2023 05:20:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232956AbjHKJUc (ORCPT ); Fri, 11 Aug 2023 05:20:32 -0400 Received: from mail.nfschina.com (unknown [42.101.60.195]) by lindbergh.monkeyblade.net (Postfix) with SMTP id C385BC5; Fri, 11 Aug 2023 02:20:31 -0700 (PDT) Received: from localhost.localdomain (unknown [219.141.250.2]) by mail.nfschina.com (Maildata Gateway V2.8.8) with ESMTPA id B570C605E83FB; Fri, 11 Aug 2023 17:20:29 +0800 (CST) X-MD-Sfrom: kunyu@nfschina.com X-MD-SrcIP: 219.141.250.2 From: Li kunyu To: tj@kernel.org, lizefan.x@bytedance.com, hannes@cmpxchg.org Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Li kunyu Subject: [PATCH] =?utf-8?q?cgroup=3A_cgroup=3A_Remove_unnecessary_=E2=80=98N?= =?utf-8?q?ULL=E2=80=99_values_from_res?= Date: Sun, 13 Aug 2023 09:51:42 +0800 Message-Id: <20230813015142.3095-1-kunyu@nfschina.com> X-Mailer: git-send-email 2.18.2 MIME-Version: 1.0 X-Spam-Status: No, score=0.9 required=5.0 tests=BAYES_00,DATE_IN_FUTURE_24_48, RDNS_NONE,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1773924965340214249 X-GMAIL-MSGID: 1773924965340214249 res is assigned first, so it does not need to initialize the assignment. Signed-off-by: Li kunyu --- kernel/cgroup/cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index cdda2a147d6b..3a8802921bcb 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -1419,7 +1419,7 @@ static inline struct cgroup *__cset_cgroup_from_root(struct css_set *cset, static struct cgroup * current_cgns_cgroup_from_root(struct cgroup_root *root) { - struct cgroup *res = NULL; + struct cgroup *res; struct css_set *cset; lockdep_assert_held(&css_set_lock);