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RxRPC: Use iov_iter_count() in rxrpc_send_data() instead of the len argument

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Use iov_iter_count() in rxrpc_send_data() to get the remaining data length
instead of using the len argument as the len argument is now redundant.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2015-04-01 15:43:26 +01:00
parent aab94830a7
commit 382d7974de
1 changed files with 11 additions and 13 deletions
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24
net/rxrpc/ar-output.c
View file

@ -546,8 +546,6 @@ static int rxrpc_send_data(struct kiocb *iocb,
call->tx_pending = NULL;
copied = 0;
if (len > iov_iter_count(&msg->msg_iter))
len = iov_iter_count(&msg->msg_iter);
do {
if (!skb) {
size_t size, chunk, max, space;
@ -570,8 +568,8 @@ static int rxrpc_send_data(struct kiocb *iocb,
max &= ~(call->conn->size_align - 1UL);
chunk = max;
if (chunk > len && !more)
chunk = len;
if (chunk > iov_iter_count(&msg->msg_iter) && !more)
chunk = iov_iter_count(&msg->msg_iter);
space = chunk + call->conn->size_align;
space &= ~(call->conn->size_align - 1UL);
@ -614,11 +612,11 @@ static int rxrpc_send_data(struct kiocb *iocb,
sp = rxrpc_skb(skb);
/* append next segment of data to the current buffer */
if (len > 0) {
if (iov_iter_count(&msg->msg_iter) > 0) {
int copy = skb_tailroom(skb);
ASSERTCMP(copy, >, 0);
if (copy > len)
copy = len;
if (copy > iov_iter_count(&msg->msg_iter))
copy = iov_iter_count(&msg->msg_iter);
if (copy > sp->remain)
copy = sp->remain;
@ -630,8 +628,6 @@ static int rxrpc_send_data(struct kiocb *iocb,
sp->remain -= copy;
skb->mark += copy;
copied += copy;
len -= copy;
}
/* check for the far side aborting the call or a network error
@ -640,7 +636,8 @@ static int rxrpc_send_data(struct kiocb *iocb,
goto call_aborted;
/* add the packet to the send queue if it's now full */
if (sp->remain <= 0 || (!len && !more)) {
if (sp->remain <= 0 ||
(iov_iter_count(&msg->msg_iter) == 0 && !more)) {
struct rxrpc_connection *conn = call->conn;
uint32_t seq;
size_t pad;
@ -670,7 +667,7 @@ static int rxrpc_send_data(struct kiocb *iocb,
sp->hdr.serviceId = conn->service_id;
sp->hdr.flags = conn->out_clientflag;
if (len == 0 && !more)
if (iov_iter_count(&msg->msg_iter) == 0 && !more)
sp->hdr.flags |= RXRPC_LAST_PACKET;
else if (CIRC_SPACE(call->acks_head, call->acks_tail,
call->acks_winsz) > 1)
@ -686,10 +683,11 @@ static int rxrpc_send_data(struct kiocb *iocb,
memcpy(skb->head, &sp->hdr,
sizeof(struct rxrpc_header));
rxrpc_queue_packet(call, skb, !iov_iter_count(&msg->msg_iter) && !more);
rxrpc_queue_packet(call, skb,
iov_iter_count(&msg->msg_iter) == 0 && !more);
skb = NULL;
}
} while (len > 0);
} while (iov_iter_count(&msg->msg_iter) > 0);
success:
ret = copied;