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net: poll() optimizations

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No need to test twice sk->sk_shutdown & RCV_SHUTDOWN

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-09-06 11:13:50 +00:00 • committed by David S. Miller
parent d61702f127
commit db40980fcd
4 changed files with 8 additions and 12 deletions
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5
net/unix/af_unix.c
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@ -2024,11 +2024,10 @@ static unsigned int unix_poll(struct file *file, struct socket *sock, poll_table
if (sk->sk_shutdown == SHUTDOWN_MASK)
mask |= POLLHUP;
if (sk->sk_shutdown & RCV_SHUTDOWN)
mask |= POLLRDHUP;
mask |= POLLRDHUP | POLLIN | POLLRDNORM;
/* readable? */
if (!skb_queue_empty(&sk->sk_receive_queue) ||
(sk->sk_shutdown & RCV_SHUTDOWN))
if (!skb_queue_empty(&sk->sk_receive_queue))
mask |= POLLIN | POLLRDNORM;
/* Connection-based need to check for termination and startup */