[PATCH -next] dlm: use DEFINE_MUTEX() for mutex lock

From: Ye Bin
Date: Fri Apr 09 2021 - 05:43:28 EST


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

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
---
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 d5bd990bcab8..327a69598de5 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;

@@ -795,7 +795,6 @@ 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);
}