tree b4b56acb67359121477091e1512aacb6016a570a
parent 0307a0b74b3af6ecb1c8b7f727376130b15bbf44
author Eric Dumazet <edumazet@google.com> 1637002963 -0800
committer David S. Miller <davem@davemloft.net> 1637068234 +0000

tcp: annotate races around tp->urg_data

tcp_poll() and tcp_ioctl() are reading tp->urg_data without socket lock
owned.

Also, it is faster to first check tp->urg_data in tcp_poll(),
then tp->urg_seq == tp->copied_seq, because tp->urg_seq is
located in a different/cold cache line.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>