From d361fd599a991ff6c1d522a599c635b35d61ef30 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Sat, 10 Jul 2010 22:45:17 +0000
Subject: [PATCH] net: sock_free() optimizations
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>
---
net/core/sock.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/core/sock.c b/net/core/sock.c
index fef2434b7c8..363bc260157 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -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);
--
2.20.1