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| author | John Dykstra <john.dykstra1@gmail.com> | 2009-05-12 15:34:50 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-17 20:44:43 -0700 |
| commit | 9dc20c5f78c53bf57fb7874b6e942842e1db20d3 (patch) | |
| tree | 07703de691fc0b6d50b4dc5d206e8f841714b7e1 /net | |
| parent | d44b5e07c6813e6d747f7f947f1da5f0abf14eb4 (diff) | |
| download | blackbird-obmc-linux-9dc20c5f78c53bf57fb7874b6e942842e1db20d3.tar.gz blackbird-obmc-linux-9dc20c5f78c53bf57fb7874b6e942842e1db20d3.zip | |
tcp: tcp_prequeue() can use keyed wakeups
When TCP frees up write buffer space, avoid waking up tasks that have
done a poll() or select() on the same socket specifying read-side
events.
This is an extension of a read-side patch by Eric Dumazet.
Signed-off-by: John Dykstra <john.dykstra1@gmail.com>
Acked-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/stream.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/core/stream.c b/net/core/stream.c index 8727cead64ad..a37debfeb1b2 100644 --- a/net/core/stream.c +++ b/net/core/stream.c @@ -33,7 +33,8 @@ void sk_stream_write_space(struct sock *sk) clear_bit(SOCK_NOSPACE, &sock->flags); if (sk->sk_sleep && waitqueue_active(sk->sk_sleep)) - wake_up_interruptible(sk->sk_sleep); + wake_up_interruptible_poll(sk->sk_sleep, POLLOUT | + POLLWRNORM | POLLWRBAND); if (sock->fasync_list && !(sk->sk_shutdown & SEND_SHUTDOWN)) sock_wake_async(sock, SOCK_WAKE_SPACE, POLL_OUT); } |
