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net: Add and use skb_copy_datagram_msg() helper.

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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>
This commit is contained in:
David S. Miller 2014-11-05 16:46:40 -05:00
parent 1d76c1d028
commit 51f3d02b98
43 changed files with 58 additions and 57 deletions
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2
net/atm/common.c
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@ -554,7 +554,7 @@ int vcc_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
msg->msg_flags |= MSG_TRUNC;
}
error = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
error = skb_copy_datagram_msg(skb, 0, msg, copied);
if (error)
return error;
sock_recv_ts_and_drops(msg, sk, skb);