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net: fix sleeping for sk_wait_event()

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Similar to commit 14135f30e3 ("inet: fix sleeping inside inet_wait_for_connect()"),
sk_wait_event() needs to fix too, because release_sock() is blocking,
it changes the process state back to running after sleep, which breaks
the previous prepare_to_wait().

Switch to the new wait API.

Cc: Eric Dumazet <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Signed-off-by: Cong Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
WANG Cong 2016-11-11 10:20:50 -08:00 • committed by David S. Miller
commit d9dc8b0f8b
10 changed files with 77 additions and 77 deletions
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9
net/phonet/pep.c
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@ -1167,7 +1167,7 @@ disabled:
/* Wait until flow control allows TX */
done = atomic_read(&pn->tx_credits);
while (!done) {
DEFINE_WAIT(wait);
DEFINE_WAIT_FUNC(wait, woken_wake_function);
if (!timeo) {
err = -EAGAIN;
@ -1178,10 +1178,9 @@ disabled:
goto out;
}
prepare_to_wait(sk_sleep(sk), &wait,
TASK_INTERRUPTIBLE);
done = sk_wait_event(sk, &timeo, atomic_read(&pn->tx_credits));
finish_wait(sk_sleep(sk), &wait);
add_wait_queue(sk_sleep(sk), &wait);
done = sk_wait_event(sk, &timeo, atomic_read(&pn->tx_credits), &wait);
remove_wait_queue(sk_sleep(sk), &wait);
if (sk->sk_state != TCP_ESTABLISHED)
goto disabled;