Re: [PATCH net-next RFC v1 01/10] iov_iter: Skip copy in memcpy_to_page if src==dst

You probably want Al to have a look at this..

[PATCH net-next RFC v1 01/10] iov_iter: Skip copy in memcpy_to_page if src==dst

When using direct data placement the NIC writes some of the payload directly to the destination buffer, and constructs the SKB such that it points to this data. As a result, the skb_copy datagram_iter call will attempt to copy data when it is not necessary. This patch adds a check to avoid this co