Le lundi 17 janvier 2011 à 16:11 +0800, Jason Wang a écrit : > We can use lock_sock_fast() instead of lock_sock() in order to get > speedup in peek_head_len(). > > Signed-off-by: Jason Wang <[email protected]> > --- > drivers/vhost/net.c | 4 ++-- > 1 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c > index c32a2e4..50b622a 100644 > --- a/drivers/vhost/net.c > +++ b/drivers/vhost/net.c > @@ -211,12 +211,12 @@ static int peek_head_len(struct sock *sk) > { > struct sk_buff *head; > int len = 0; > + bool slow = lock_sock_fast(sk); > > - lock_sock(sk); > head = skb_peek(&sk->sk_receive_queue); > if (head) > len = head->len; > - release_sock(sk); > + unlock_sock_fast(sk, slow); > return len; > } > Acked-by: Eric Dumazet <[email protected]>
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