linux-kernel - [PATCH -next 1/2] net/rds: Remove unused variable 'total

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Date:   Mon, 10 Oct 2022 11:09:03 +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 1/2] net/rds: Remove unused variable 'total_copied'

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

'commit 0cebaccef3ac ("rds: zerocopy Tx support.")'
This commit introduced the variable 'dest_frames'. 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/message.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/rds/message.c b/net/rds/message.c
index d74be4e3f3fa..eee2e674d5c0 100644
--- a/net/rds/message.c
+++ b/net/rds/message.c
@@ -366,7 +366,6 @@ static int rds_message_zcopy_from_user(struct rds_message *rm, struct iov_iter *
 	struct scatterlist *sg;
 	int ret = 0;
 	int length = iov_iter_count(from);
-	int total_copied = 0;
 	struct rds_msg_zcopy_info *info;
 
 	rm->m_inc.i_hdr.h_len = cpu_to_be32(iov_iter_count(from));
@@ -404,7 +403,6 @@ static int rds_message_zcopy_from_user(struct rds_message *rm, struct iov_iter *
 			ret = -EFAULT;
 			goto err;
 		}
-		total_copied += copied;
 		length -= copied;
 		sg_set_page(sg, pages, copied, start);
 		rm->data.op_nents++;
-- 
2.33.0