[INET]: Drop the inet_inherit_port() call.

As I can see from the code, two places (tcp_v6_syn_recv_sock and
dccp_v6_request_recv_sock) that call this one already run with
BHs disabled, so it's safe to call __inet_inherit_port there.

Besides (in case I missed smth with code review) the calltrace
tcp_v6_syn_recv_sock
 `- tcp_v4_syn_recv_sock
     `- __inet_inherit_port
and the similar for DCCP are valid, but assumes BHs to be disabled.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/inet_hashtables.h

@@ -235,13 +235,6 @@ static inline void __inet_inherit_port(struct sock *sk, struct sock *child)
 	spin_unlock(&head->lock);
 }
 
-static inline void inet_inherit_port(struct sock *sk, struct sock *child)
-{
-	local_bh_disable();
-	__inet_inherit_port(sk, child);
-	local_bh_enable();
-}
-
 extern void inet_put_port(struct sock *sk);
 
 extern void inet_listen_wlock(struct inet_hashinfo *hashinfo);

net/dccp/ipv6.c

@@ -625,7 +625,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
 	newinet->daddr = newinet->saddr = newinet->rcv_saddr = LOOPBACK4_IPV6;
 
 	__inet6_hash(newsk);
-	inet_inherit_port(sk, newsk);
+	__inet_inherit_port(sk, newsk);
 
 	return newsk;
 

net/ipv6/tcp_ipv6.c

@@ -1534,7 +1534,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 #endif
 
 	__inet6_hash(newsk);
-	inet_inherit_port(sk, newsk);
+	__inet_inherit_port(sk, newsk);
 
 	return newsk;