Re: [PATCH 1/4] inet: Add skb_copy_datagram_iter

From: Herbert Xu
Date: Tue Nov 04 2014 - 09:55:51 EST


On Tue, Nov 04, 2014 at 02:52:22PM +0000, Al Viro wrote:
>
> > Hmm if that is your concern then I don't see how skb_copy_datagram_msg
> > changes things as you'd still have to convert every existing caller
> > of skb_copy_datagram_iovec. Colour me confused.
>
> Fewer places having to even think of iovec/iov_iter...

Well it's the difference between

skb_copy_datagram_iter(..., &kmsghdr->iov_iter, ...)

and

skb_copy_datagram_msg(..., kmsghdr, ...)

Heck we could even make skb_copy_datagram_msg an inline wrapper
around skb_copy_datagram_iter if you like.

Anyway, the point is that not everything comes with a kmsghdr.

Cheers,
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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