tree 0af6636fde05f74a8aa5421bfe9828e2a209170d
parent ef56e622c61e74dd6077615c9ea76c5132195880
author David S. Miller <davem@sunset.davemloft.net> 1163131105 -0800
committer David S. Miller <davem@sunset.davemloft.net> 1165123312 -0800

[TCP]: Don't set SKB owner in tcp_transmit_skb().

The data itself is already charged to the SKB, doing
the skb_set_owner_w() just generates a lot of noise and
extra atomics we don't really need.

Lmbench improvements on lat_tcp are minimal:

before:
TCP latency using localhost: 23.2701 microseconds
TCP latency using localhost: 23.1994 microseconds
TCP latency using localhost: 23.2257 microseconds

after:
TCP latency using localhost: 22.8380 microseconds
TCP latency using localhost: 22.9465 microseconds
TCP latency using localhost: 22.8462 microseconds

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