[NET]: Mark lock_sock and release_sock as FASTCALL.

include/net/sock.h

@@ -561,8 +561,8 @@ extern void __lock_sock(struct sock *sk);
 extern void __release_sock(struct sock *sk);
 #define sock_owned_by_user(sk)	((sk)->sk_lock.owner)
 
-extern void lock_sock(struct sock *sk);
-extern void release_sock(struct sock *sk);
+extern void FASTCALL(lock_sock(struct sock *sk));
+extern void FASTCALL(release_sock(struct sock *sk));
 
 /* BH context may only use the following locking interface. */
 #define bh_lock_sock(__sk)	spin_lock(&((__sk)->sk_lock.slock))

net/core/sock.c

@@ -1138,7 +1138,7 @@ void sock_init_data(struct socket *sock, struct sock *sk)
 	atomic_set(&sk->sk_refcnt, 1);
 }
 
-void lock_sock(struct sock *sk)
+void fastcall lock_sock(struct sock *sk)
 {
 	might_sleep();
 	spin_lock_bh(&(sk->sk_lock.slock));
@@ -1150,7 +1150,7 @@ void lock_sock(struct sock *sk)
 
 EXPORT_SYMBOL(lock_sock);
 
-void release_sock(struct sock *sk)
+void fastcall release_sock(struct sock *sk)
 {
 	spin_lock_bh(&(sk->sk_lock.slock));
 	if (sk->sk_backlog.tail)