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net/smc: always call the POLL_IN part of sk_wake_async 

Wake up reading file descriptors for a closing socket as well, otherwise
some socket applications may stall.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2017-04-10 14:58:00 +02:00 committed by David S. Miller
parent 90cacb2ea6
commit 90e9517ed9
1 changed files with 1 additions and 2 deletions
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net/smc/smc_rx.c
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@ -36,11 +36,10 @@ static void smc_rx_data_ready(struct sock *sk)
if (skwq_has_sleeper(wq))
wake_up_interruptible_sync_poll(&wq->wait, POLLIN | POLLPRI |
POLLRDNORM | POLLRDBAND);
sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
if ((sk->sk_shutdown == SHUTDOWN_MASK) ||
(sk->sk_state == SMC_CLOSED))
sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_HUP);
else
sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
rcu_read_unlock();
}