From patchwork Wed Aug 8 13:47:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zhong jiang X-Patchwork-Id: 10560037 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 20CAB174A for ; Wed, 8 Aug 2018 14:00:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 066DC2AD67 for ; Wed, 8 Aug 2018 14:00:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E80512AD8F; Wed, 8 Aug 2018 14:00:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8BC992AD41 for ; Wed, 8 Aug 2018 14:00:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727446AbeHHQTt (ORCPT ); Wed, 8 Aug 2018 12:19:49 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:10679 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726971AbeHHQTe (ORCPT ); Wed, 8 Aug 2018 12:19:34 -0400 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id CA9E5525B111C; Wed, 8 Aug 2018 21:59:39 +0800 (CST) Received: from linux-ibm.site (10.175.102.37) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.399.0; Wed, 8 Aug 2018 21:59:38 +0800 From: zhong jiang To: , , CC: , Subject: [PATCHv3 3/3] fs/btrfs/tree-log: change btrfs_pin_log_trans to be void function Date: Wed, 8 Aug 2018 21:47:55 +0800 Message-ID: <1533736075-8691-4-git-send-email-zhongjiang@huawei.com> X-Mailer: git-send-email 1.7.12.4 In-Reply-To: <1533736075-8691-1-git-send-email-zhongjiang@huawei.com> References: <1533736075-8691-1-git-send-email-zhongjiang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.102.37] X-CFilter-Loop: Reflected Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP btrfs_pin_log_trans defines the variable "ret" for return valule, but it is not modified after initialization. Further, I find that any of the callees do not handle the return value, so it is safe to drop the unneeded value "ret". Signed-off-by: zhong jiang --- fs/btrfs/tree-log.c | 5 +---- fs/btrfs/tree-log.h | 2 +- 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 1650dc4..4ed7379 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -205,14 +205,11 @@ static int join_running_log_trans(struct btrfs_root *root) * until you call btrfs_end_log_trans() or it makes any future * log transactions wait until you call btrfs_end_log_trans() */ -int btrfs_pin_log_trans(struct btrfs_root *root) +void btrfs_pin_log_trans(struct btrfs_root *root) { - int ret = -ENOENT; - mutex_lock(&root->log_mutex); atomic_inc(&root->log_writers); mutex_unlock(&root->log_mutex); - return ret; } /* diff --git a/fs/btrfs/tree-log.h b/fs/btrfs/tree-log.h index 122e68b..8977678 100644 --- a/fs/btrfs/tree-log.h +++ b/fs/btrfs/tree-log.h @@ -65,7 +65,7 @@ int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans, const char *name, int name_len, struct btrfs_inode *inode, u64 dirid); void btrfs_end_log_trans(struct btrfs_root *root); -int btrfs_pin_log_trans(struct btrfs_root *root); +void btrfs_pin_log_trans(struct btrfs_root *root); void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, struct btrfs_inode *dir, struct btrfs_inode *inode, int for_rename);