[PATCH 3/3] vhost-net: use lock_sock_fast() in peek_head_len()
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STALE5704d
From: Jason Wang <hidden>
Date: 2011-01-17 08:12:19
Also in:
kvm, lkml, virtualization
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez
We can use lock_sock_fast() instead of lock_sock() in order to get speedup in peek_head_len(). Signed-off-by: Jason Wang <redacted> --- 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; }