From patchwork Thu Dec 24 13:22:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Yongjun X-Patchwork-Id: 11989601 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=unavailable 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 66639C433E9 for ; Thu, 24 Dec 2020 13:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 39445224B1 for ; Thu, 24 Dec 2020 13:23:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728065AbgLXNWo (ORCPT ); Thu, 24 Dec 2020 08:22:44 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:9485 "EHLO szxga06-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726611AbgLXNWo (ORCPT ); Thu, 24 Dec 2020 08:22:44 -0500 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4D1rLc6nqyzhvDG; Thu, 24 Dec 2020 21:21:12 +0800 (CST) Received: from ubuntu.network (10.175.138.68) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.498.0; Thu, 24 Dec 2020 21:21:41 +0800 From: Zheng Yongjun To: , , , , CC: Zheng Yongjun Subject: [PATCH v2 -next] btrfs: use DEFINE_MUTEX() for mutex lock Date: Thu, 24 Dec 2020 21:22:17 +0800 Message-ID: <20201224132217.30741-1-zhengyongjun3@huawei.com> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 X-Originating-IP: [10.175.138.68] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org mutex lock can be initialized automatically with DEFINE_MUTEX() rather than explicitly calling mutex_init(). Signed-off-by: Zheng Yongjun --- fs/btrfs/check-integrity.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 81a8c87a5afb..783e1cad9ae3 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -371,7 +371,7 @@ static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state, struct btrfsic_dev_state *dev_state, u64 dev_bytenr); -static struct mutex btrfsic_mutex; +static DEFINE_MUTEX(btrfsic_mutex); static int btrfsic_is_initialized; static struct btrfsic_dev_state_hashtable btrfsic_dev_state_hashtable; @@ -2789,7 +2789,6 @@ int btrfsic_mount(struct btrfs_fs_info *fs_info, return -ENOMEM; if (!btrfsic_is_initialized) { - mutex_init(&btrfsic_mutex); btrfsic_dev_state_hashtable_init(&btrfsic_dev_state_hashtable); btrfsic_is_initialized = 1; }