linux-kernel - [PATCH -next 2/2] net/rds: Remove unused variable 'total_payload

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Message-ID: <20221010030904.2883557-3-chenzhongjin@huawei.com>
Date:   Mon, 10 Oct 2022 11:09:04 +0800
From:   Chen Zhongjin <chenzhongjin@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-rdma@...r.kernel.org>, <rds-devel@....oracle.com>
CC:     <santosh.shilimkar@...cle.com>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <chenzhongjin@...wei.com>
Subject: [PATCH -next 2/2] net/rds: Remove unused variable 'total_payload_len'

Reported by Clang [-Wunused-but-set-variable]

'commit f9fb69adb6c7 ("RDS: make message size limit compliant with spec")'
This commit introduced the variable 'total_copied'. However this variable
is never used by other code except iterates itself, so remove it.

Signed-off-by: Chen Zhongjin <chenzhongjin@...wei.com>
---
 net/rds/send.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/rds/send.c b/net/rds/send.c
index 0c5504068e3c..5e57a1581dc6 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -1114,7 +1114,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
 	struct rds_conn_path *cpath;
 	struct in6_addr daddr;
 	__u32 scope_id = 0;
-	size_t total_payload_len = payload_len, rdma_payload_len = 0;
+	size_t rdma_payload_len = 0;
 	bool zcopy = ((msg->msg_flags & MSG_ZEROCOPY) &&
 		      sock_flag(rds_rs_to_sk(rs), SOCK_ZEROCOPY));
 	int num_sgs = DIV_ROUND_UP(payload_len, PAGE_SIZE);
@@ -1243,7 +1243,6 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
 	if (ret)
 		goto out;
 
-	total_payload_len += rdma_payload_len;
 	if (max_t(size_t, payload_len, rdma_payload_len) > RDS_MAX_MSG_SIZE) {
 		ret = -EMSGSIZE;
 		goto out;
-- 
2.33.0