commit d8725c86aebaf3516e220760aaf5fefc73825188
author Al Viro <viro@zeniv.linux.org.uk> Thu Dec 11 00:02:50 2014 -0500
committer Al Viro <viro@zeniv.linux.org.uk> Sat Apr 11 15:27:37 2015 -0400
tree 4947b67104e1ee7c3725b64e660aa6fc0cad0681
parent 6aa248145ab0b1809de2411cf129ec1fc315a46f

get rid of the size argument of sock_sendmsg()

it's equal to iov_iter_count(&msg->msg_iter) in all cases

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

net/socket.c

diff --git a/net/socket.c b/net/socket.c
index b6ceeda..21676e4 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -610,17 +610,19 @@
 }
 EXPORT_SYMBOL(__sock_tx_timestamp);
 
-static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg,
-				     size_t size)
+static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
 {
-	return sock->ops->sendmsg(sock, msg, size);
+	int ret = sock->ops->sendmsg(sock, msg, iov_iter_count(&msg->msg_iter));
+	BUG_ON(ret == -EIOCBQUEUED);
+	return ret;
 }
 
-int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
+int sock_sendmsg(struct socket *sock, struct msghdr *msg)
 {
-	int err = security_socket_sendmsg(sock, msg, size);
+	int err = security_socket_sendmsg(sock, msg,
+					  iov_iter_count(&msg->msg_iter));
 
-	return err ?: sock_sendmsg_nosec(sock, msg, size);
+	return err ?: sock_sendmsg_nosec(sock, msg);
 }
 EXPORT_SYMBOL(sock_sendmsg);
 
@@ -628,7 +630,7 @@
 		   struct kvec *vec, size_t num, size_t size)
 {
 	iov_iter_kvec(&msg->msg_iter, WRITE | ITER_KVEC, vec, num, size);
-	return sock_sendmsg(sock, msg, size);
+	return sock_sendmsg(sock, msg);
 }
 EXPORT_SYMBOL(kernel_sendmsg);
 
@@ -819,7 +821,7 @@
 	if (sock->type == SOCK_SEQPACKET)
 		msg.msg_flags |= MSG_EOR;
 
-	res = sock_sendmsg(sock, &msg, iov_iter_count(from));
+	res = sock_sendmsg(sock, &msg);
 	*from = msg.msg_iter;
 	return res;
 }
@@ -1657,7 +1659,7 @@
 	if (sock->file->f_flags & O_NONBLOCK)
 		flags |= MSG_DONTWAIT;
 	msg.msg_flags = flags;
-	err = sock_sendmsg(sock, &msg, iov_iter_count(&msg.msg_iter));
+	err = sock_sendmsg(sock, &msg);
 
 out_put:
 	fput_light(sock->file, fput_needed);
@@ -1892,7 +1894,7 @@
 	    __attribute__ ((aligned(sizeof(__kernel_size_t))));
 	/* 20 is size of ipv6_pktinfo */
 	unsigned char *ctl_buf = ctl;
-	int ctl_len, total_len;
+	int ctl_len;
 	ssize_t err;
 
 	msg_sys->msg_name = &address;
@@ -1903,7 +1905,6 @@
 		err = copy_msghdr_from_user(msg_sys, msg, NULL, &iov);
 	if (err < 0)
 		return err;
-	total_len = iov_iter_count(&msg_sys->msg_iter);
 
 	err = -ENOBUFS;
 
@@ -1950,10 +1951,10 @@
 	    used_address->name_len == msg_sys->msg_namelen &&
 	    !memcmp(&used_address->name, msg_sys->msg_name,
 		    used_address->name_len)) {
-		err = sock_sendmsg_nosec(sock, msg_sys, total_len);
+		err = sock_sendmsg_nosec(sock, msg_sys);
 		goto out_freectl;
 	}
-	err = sock_sendmsg(sock, msg_sys, total_len);
+	err = sock_sendmsg(sock, msg_sys);
 	/*
 	 * If this is sendmmsg() and sending to current destination address was
 	 * successful, remember it.