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Revert "tcp: must block bh in __inet_twsk_hashdance()" 

We had to disable BH _before_ calling __inet_twsk_hashdance() in commit
cfac7f836a ("tcp/dccp: block bh before arming time_wait timer").

This means we can revert 614bdd4d6e ("tcp: must block bh in
__inet_twsk_hashdance()").

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2017-12-01 15:28:44 -08:00 committed by David S. Miller
parent 2391f0b480
commit e599ea1410
1 changed files with 3 additions and 3 deletions
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6
net/ipv4/inet_timewait_sock.c
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@ -93,7 +93,7 @@ static void inet_twsk_add_bind_node(struct inet_timewait_sock *tw,
}
/*
* Enter the time wait state.
* Enter the time wait state. This is called with locally disabled BH.
* Essentially we whip up a timewait bucket, copy the relevant info into it
* from the SK, and mess with hash chains and list linkage.
*/
@ -111,7 +111,7 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
*/
bhead = &hashinfo->bhash[inet_bhashfn(twsk_net(tw), inet->inet_num,
hashinfo->bhash_size)];
spin_lock_bh(&bhead->lock);
spin_lock(&bhead->lock);
tw->tw_tb = icsk->icsk_bind_hash;
WARN_ON(!icsk->icsk_bind_hash);
inet_twsk_add_bind_node(tw, &tw->tw_tb->owners);
@ -137,7 +137,7 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
if (__sk_nulls_del_node_init_rcu(sk))
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
spin_unlock_bh(lock);
spin_unlock(lock);
}
EXPORT_SYMBOL_GPL(__inet_twsk_hashdance);