1 files changed, 9 insertions, 5 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index d438dfb0c8f3..e566f3c67677 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2049,8 +2049,9 @@ static void *established_get_first(struct seq_file *seq)
                 struct sock *sk;
                 struct hlist_node *node;
                 struct inet_timewait_sock *tw;
+                rwlock_t *lock = inet_ehash_lockp(&tcp_hashinfo, st->bucket);
 
-                read_lock_bh(&tcp_hashinfo.ehash[st->bucket].lock);
+                read_lock_bh(lock);
                 sk_for_each(sk, node, &tcp_hashinfo.ehash[st->bucket].chain) {
                         if (sk->sk_family != st->family) {
                                 continue;
@@ -2067,7 +2068,7 @@ static void *established_get_first(struct seq_file *seq)
                         rc = tw;
                         goto out;
                 }
-                read_unlock_bh(&tcp_hashinfo.ehash[st->bucket].lock);
+                read_unlock_bh(lock);
                 st->state = TCP_SEQ_STATE_ESTABLISHED;
         }
 out:
@@ -2094,11 +2095,11 @@ get_tw:
                         cur = tw;
                         goto out;
                 }
-                read_unlock_bh(&tcp_hashinfo.ehash[st->bucket].lock);
+                read_unlock_bh(inet_ehash_lockp(&tcp_hashinfo, st->bucket));
                 st->state = TCP_SEQ_STATE_ESTABLISHED;
 
                 if (++st->bucket < tcp_hashinfo.ehash_size) {
-                        read_lock_bh(&tcp_hashinfo.ehash[st->bucket].lock);
+                        read_lock_bh(inet_ehash_lockp(&tcp_hashinfo, st->bucket));
                         sk = sk_head(&tcp_hashinfo.ehash[st->bucket].chain);
                 } else {
                         cur = NULL;
@@ -2206,7 +2207,7 @@ static void tcp_seq_stop(struct seq_file *seq, void *v)
         case TCP_SEQ_STATE_TIME_WAIT:
         case TCP_SEQ_STATE_ESTABLISHED:
                 if (v)
-                        read_unlock_bh(&tcp_hashinfo.ehash[st->bucket].lock);
+                        read_unlock_bh(inet_ehash_lockp(&tcp_hashinfo, st->bucket));
                 break;
         }
 }
@@ -2417,6 +2418,8 @@ void tcp4_proc_exit(void)
 }
 #endif /* CONFIG_PROC_FS */
 
+DEFINE_PROTO_INUSE(tcp)
+
 struct proto tcp_prot = {
         .name                   = "TCP",
         .owner                  = THIS_MODULE,
@@ -2451,6 +2454,7 @@ struct proto tcp_prot = {
         .compat_setsockopt      = compat_tcp_setsockopt,
         .compat_getsockopt      = compat_tcp_getsockopt,
 #endif
+        REF_PROTO_INUSE(tcp)
 };
 
 void __init tcp_v4_init(struct net_proto_family *ops)