[PATCH 3/3] vhost-net: use lock_sock_fast() in peek_head_len()

Jason Wang
2011-01-17T08:12:19Z

We can use lock_sock_fast() instead of lock_sock() in order to get
speedup in peek_head_len().

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
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;
}