tree c9086093021e0d0e1d7573f437cb2f7ffdf36273
parent be12a1fe298e8be04d5215364f94654dff81b0bc
author Hannes Frederic Sowa <hannes@stressinduktion.org> 1432220399 +0200
committer David S. Miller <davem@davemloft.net> 1432526818 -0400

net: af_unix: implement stream sendpage support

This patch implements sendpage support for AF_UNIX SOCK_STREAM
sockets. This is also required for a complete splice implementation.

The implementation is a bit tricky because we append to already existing
skbs and so have to hold unix_sk->readlock to protect the reading side
from either advancing UNIXCB.consumed or freeing the skb at the socket
receive tail.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>