net: Add and use skb_copy_datagram_msg() helper.

This encapsulates all of the skb_copy_datagram_iovec() callers
with call argument signature "skb, offset, msghdr->msg_iov, length".

When we move to iov_iters in the networking, the iov_iter object will
sit in the msghdr.

Having a helper like this means there will be less places to touch
during that transformation.

Based upon descriptions and patch from Al Viro.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 5ad4418ef093..59e785bfde65 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1335,7 +1335,7 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock,
         /* Currently, each datagram always contains a complete record */
         msg->msg_flags |= MSG_EOR;
 
-        rc = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+        rc = skb_copy_datagram_msg(skb, 0, msg, copied);
         if (rc)
                 goto out_free_dgram;