ipvs: remove extra rcu lock

In 3.7 we added code that uses ipv4_update_pmtu but after commit
c5ae7d4192 (ipv4: must use rcu protection while calling fib_lookup)
the RCU lock is not needed.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>

diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 18b4bc55fa3dd2698fe03cadfd1156b239700e81..61f49d241712a77797829a294ee94fc10161306e 100644 (file)
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1394,10 +1394,8 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
                        skb_reset_network_header(skb);
                        IP_VS_DBG(12, "ICMP for IPIP %pI4->%pI4: mtu=%u\n",
                                &ip_hdr(skb)->saddr, &ip_hdr(skb)->daddr, mtu);
-                       rcu_read_lock();
                        ipv4_update_pmtu(skb, dev_net(skb->dev),
                                         mtu, 0, 0, 0, 0);
-                       rcu_read_unlock();
                        /* Client uses PMTUD? */
                        if (!(cih->frag_off & htons(IP_DF)))
                                goto ignore_ipip;