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net: sock_free() optimizations

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Avoid two extra instructions in sock_free(), to reload
skb->truesize and skb->sk

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-07-10 22:45:17 +00:00 committed by David S. Miller
parent 7ba4291007
commit d361fd599a
1 changed files with 3 additions and 2 deletions
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5
net/core/sock.c
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@ -1339,9 +1339,10 @@ EXPORT_SYMBOL(sock_wfree);
void sock_rfree(struct sk_buff *skb)
{
struct sock *sk = skb->sk;
unsigned int len = skb->truesize;
atomic_sub(skb->truesize, &sk->sk_rmem_alloc);
sk_mem_uncharge(skb->sk, skb->truesize);
atomic_sub(len, &sk->sk_rmem_alloc);
sk_mem_uncharge(sk, len);
}
EXPORT_SYMBOL(sock_rfree);