block/rnbd-clt: Remove some arguments from insert_dev_if_not_exists_devpath

Remove 'pathname' and 'sess' since we can dereference it from 'dev'.
Signed-off-by: Guoqing Jiang <guoqing.jiang@gmx.com>
Reviewed-by: Danil Kipnis <danil.kipnis@cloud.ionos.com>
Signed-off-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210419073722.15351-4-gi-oh.kim@ionos.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

drivers/block/rnbd/rnbd-clt.c

@@ -1471,14 +1471,13 @@ static bool exists_devpath(const char *pathname, const char *sessname)
 	return found;
 }
 
-static bool insert_dev_if_not_exists_devpath(const char *pathname,
-					     struct rnbd_clt_session *sess,
-					     struct rnbd_clt_dev *dev)
+static bool insert_dev_if_not_exists_devpath(struct rnbd_clt_dev *dev)
 {
 	bool found;
+	struct rnbd_clt_session *sess = dev->sess;
 
 	mutex_lock(&sess_lock);
-	found = __exists_dev(pathname, sess->sessname);
+	found = __exists_dev(dev->pathname, sess->sessname);
 	if (!found) {
 		mutex_lock(&sess->lock);
 		list_add_tail(&dev->list, &sess->devs_list);
@@ -1522,7 +1521,7 @@ struct rnbd_clt_dev *rnbd_clt_map_device(const char *sessname,
 		ret = PTR_ERR(dev);
 		goto put_sess;
 	}
-	if (insert_dev_if_not_exists_devpath(pathname, sess, dev)) {
+	if (insert_dev_if_not_exists_devpath(dev)) {
 		ret = -EEXIST;
 		goto put_dev;
 	}