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[drbd] use sock_sendmsg()

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... and keep ->msg_iter through the loop

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-12-10 17:06:38 -05:00
parent b4b8664d29
commit 79ab80beb7
1 changed files with 4 additions and 7 deletions
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11
drivers/block/drbd/drbd_main.c
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@ -1846,7 +1846,7 @@ int drbd_send_out_of_sync(struct drbd_peer_device *peer_device, struct drbd_requ
int drbd_send(struct drbd_connection *connection, struct socket *sock,
void *buf, size_t size, unsigned msg_flags)
{
struct kvec iov;
struct kvec iov = {.iov_base = buf, .iov_len = size};
struct msghdr msg;
int rv, sent = 0;
@ -1855,15 +1855,14 @@ int drbd_send(struct drbd_connection *connection, struct socket *sock,
/* THINK if (signal_pending) return ... ? */
iov.iov_base = buf;
iov.iov_len = size;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = msg_flags | MSG_NOSIGNAL;
iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &iov, 1, size);
if (sock == connection->data.socket) {
rcu_read_lock();
connection->ko_count = rcu_dereference(connection->net_conf)->ko_count;
@ -1871,7 +1870,7 @@ int drbd_send(struct drbd_connection *connection, struct socket *sock,
drbd_update_congested(connection);
}
do {
rv = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
rv = sock_sendmsg(sock, &msg);
if (rv == -EAGAIN) {
if (we_should_drop_the_connection(connection, sock))
break;
@ -1885,8 +1884,6 @@ int drbd_send(struct drbd_connection *connection, struct socket *sock,
if (rv < 0)
break;
sent += rv;
iov.iov_base += rv;
iov.iov_len -= rv;
} while (sent < size);
if (sock == connection->data.socket)