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datagram: Factor out sk queue referencing 

This makes lines shorter and simplifies further patching.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2012-02-21 07:30:33 +00:00 committed by David S. Miller
parent 0b0a635f79
commit 4934b0329f
1 changed files with 5 additions and 4 deletions
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9
net/core/datagram.c
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@ -180,18 +180,19 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned flags,
* However, this function was correct in any case. 8)
*/
unsigned long cpu_flags;
struct sk_buff_head *queue = &sk->sk_receive_queue;
spin_lock_irqsave(&sk->sk_receive_queue.lock, cpu_flags);
skb = skb_peek(&sk->sk_receive_queue);
spin_lock_irqsave(&queue->lock, cpu_flags);
skb = skb_peek(queue);
if (skb) {
*peeked = skb->peeked;
if (flags & MSG_PEEK) {
skb->peeked = 1;
atomic_inc(&skb->users);
} else
__skb_unlink(skb, &sk->sk_receive_queue);
__skb_unlink(skb, queue);
}
spin_unlock_irqrestore(&sk->sk_receive_queue.lock, cpu_flags);
spin_unlock_irqrestore(&queue->lock, cpu_flags);
if (skb)
return skb;