diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2006-12-07 00:11:33 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-12-07 00:11:33 -0800 |
| commit | e16aa207ccb61c5111525c462eeeba1f3f5fd370 (patch) | |
| tree | 8a0a344fe7a3a10567075c9d63438ff6d79a1ca6 /net/ipv4/tcp_input.c | |
| parent | 26db167702756d0022f8ea5f1f30cad3018cfe31 (diff) | |
| download | op-kernel-dev-e16aa207ccb61c5111525c462eeeba1f3f5fd370.zip op-kernel-dev-e16aa207ccb61c5111525c462eeeba1f3f5fd370.tar.gz | |
[NET]: Memory barrier cleanups
I believe all the below memory barriers only matter on SMP so
therefore the smp_* variant of the barrier should be used.
I'm wondering if the barrier in net/ipv4/inet_timewait_sock.c should be
dropped entirely. schedule_work's implementation currently implies a
memory barrier and I think sane semantics of schedule_work() should imply
a memory barrier, as needed so the caller shouldn't have to worry.
It's not quite obvious why the barrier in net/packet/af_packet.c is
needed; maybe it should be implied through flush_dcache_page?
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 9304034..c701f6a 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -4235,7 +4235,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb, * Change state from SYN-SENT only after copied_seq * is initialized. */ tp->copied_seq = tp->rcv_nxt; - mb(); + smp_mb(); tcp_set_state(sk, TCP_ESTABLISHED); security_inet_conn_established(sk, skb); @@ -4483,7 +4483,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb, case TCP_SYN_RECV: if (acceptable) { tp->copied_seq = tp->rcv_nxt; - mb(); + smp_mb(); tcp_set_state(sk, TCP_ESTABLISHED); sk->sk_state_change(sk); |
