linux-kernel - [PATCH v2 -next] dlm: debug_fs: use DEFINE

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Date:   Thu, 24 Dec 2020 20:29:21 +0800
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <cluster-devel@...hat.com>, <linux-kernel@...r.kernel.org>
CC:     <ccaulfie@...hat.com>, <teigland@...hat.com>,
        Zheng Yongjun <zhengyongjun3@...wei.com>
Subject: [PATCH v2 -next] dlm: debug_fs: use DEFINE_MUTEX() for mutex lock

mutex lock can be initialized automatically with DEFINE_MUTEX()
rather than explicitly calling mutex_init()

Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 fs/dlm/debug_fs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c
index d6bbccb0ed15..7a6fa8ac6f50 100644
--- a/fs/dlm/debug_fs.c
+++ b/fs/dlm/debug_fs.c
@@ -20,7 +20,7 @@
 
 #define DLM_DEBUG_BUF_LEN 4096
 static char debug_buf[DLM_DEBUG_BUF_LEN];
-static struct mutex debug_buf_lock;
+static DEFINE_MUTEX(debug_buf_lock);
 
 static struct dentry *dlm_root;
 
@@ -794,7 +794,6 @@ void dlm_create_debug_file(struct dlm_ls *ls)
 
 void __init dlm_register_debugfs(void)
 {
-	mutex_init(&debug_buf_lock);
 	dlm_root = debugfs_create_dir("dlm", NULL);
 }
 
-- 
2.22.0