net: move bsockets outside of read only beginning of struct inet_hashinfo

And switch bsockets to atomic_t since it might be changed in parallel.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index d7b6178bf48b..625cc5f64c94 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -62,7 +62,7 @@ void inet_bind_hash(struct sock *sk, struct inet_bind_bucket *tb,
 {
         struct inet_hashinfo *hashinfo = sk->sk_prot->h.hashinfo;
 
-        hashinfo->bsockets++;
+        atomic_inc(&hashinfo->bsockets);
 
         inet_sk(sk)->num = snum;
         sk_add_bind_node(sk, &tb->owners);
@@ -81,7 +81,7 @@ static void __inet_put_port(struct sock *sk)
         struct inet_bind_hashbucket *head = &hashinfo->bhash[bhash];
         struct inet_bind_bucket *tb;
 
-        hashinfo->bsockets--;
+        atomic_dec(&hashinfo->bsockets);
 
         spin_lock(&head->lock);
         tb = inet_csk(sk)->icsk_bind_hash;
@@ -532,6 +532,7 @@ void inet_hashinfo_init(struct inet_hashinfo *h)
 {
         int i;
 
+        atomic_set(&h->bsockets, 0);
         for (i = 0; i < INET_LHTABLE_SIZE; i++) {
                 spin_lock_init(&h->listening_hash[i].lock);
                 INIT_HLIST_NULLS_HEAD(&h->listening_hash[i].head,