linux-kernel - [PATCH v4 2/2] nbd: share exception handling code by goto put

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Message-ID: <20210204070910.1401239-3-sunke32@huawei.com>
Date:   Thu, 4 Feb 2021 02:09:10 -0500
From:   Sun Ke <sunke32@...wei.com>
To:     <josef@...icpanda.com>, <axboe@...nel.dk>, <Markus.Elfring@....de>
CC:     <linux-block@...r.kernel.org>, <nbd@...er.debian.org>,
        <linux-kernel@...r.kernel.org>, <sunke32@...wei.com>
Subject: [PATCH v4 2/2] nbd: share exception handling code by goto put_nbd

Replace the following two statements by the statement “goto put_nbd;”

	nbd_put(nbd);
	return 0;

Signed-off-by: Sun Ke <sunke32@...wei.com>
---
 drivers/block/nbd.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 3c9b3bf3f4c2..ecae81e43122 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -2029,12 +2029,11 @@ static int nbd_genl_disconnect(struct sk_buff *skb, struct genl_info *info)
 	}
 	mutex_unlock(&nbd->config_lock);
 	mutex_unlock(&nbd_index_mutex);
-	if (!refcount_inc_not_zero(&nbd->config_refs)) {
-		nbd_put(nbd);
-		return 0;
-	}
+	if (!refcount_inc_not_zero(&nbd->config_refs))
+		goto put_nbd;
 	nbd_disconnect_and_put(nbd);
 	nbd_config_put(nbd);
+put_nbd:
 	nbd_put(nbd);
 	return 0;
 }
-- 
2.25.4