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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 <eric.dumazet@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong 2016-11-11 10:20:50 -08:00 • committed by David S. Miller
parent 7d384846b9
commit d9dc8b0f8b
10 changed files with 77 additions and 77 deletions
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24
net/tipc/socket.c
View file

@ -876,9 +876,9 @@ exit:
static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p)
{
DEFINE_WAIT_FUNC(wait, woken_wake_function);
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
DEFINE_WAIT(wait);
int done;
do {
@ -892,9 +892,9 @@ static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p)
if (signal_pending(current))
return sock_intr_errno(*timeo_p);
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
done = sk_wait_event(sk, timeo_p, !tsk->link_cong);
finish_wait(sk_sleep(sk), &wait);
add_wait_queue(sk_sleep(sk), &wait);
done = sk_wait_event(sk, timeo_p, !tsk->link_cong, &wait);
remove_wait_queue(sk_sleep(sk), &wait);
} while (!done);
return 0;
}
@ -1031,9 +1031,9 @@ new_mtu:
static int tipc_wait_for_sndpkt(struct socket *sock, long *timeo_p)
{
DEFINE_WAIT_FUNC(wait, woken_wake_function);
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
DEFINE_WAIT(wait);
int done;
do {
@ -1049,12 +1049,12 @@ static int tipc_wait_for_sndpkt(struct socket *sock, long *timeo_p)
if (signal_pending(current))
return sock_intr_errno(*timeo_p);
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
add_wait_queue(sk_sleep(sk), &wait);
done = sk_wait_event(sk, timeo_p,
(!tsk->link_cong &&
!tsk_conn_cong(tsk)) ||
!tipc_sk_connected(sk));
finish_wait(sk_sleep(sk), &wait);
!tipc_sk_connected(sk), &wait);
remove_wait_queue(sk_sleep(sk), &wait);
} while (!done);
return 0;
}
@ -1929,8 +1929,8 @@ xmit:
static int tipc_wait_for_connect(struct socket *sock, long *timeo_p)
{
DEFINE_WAIT_FUNC(wait, woken_wake_function);
struct sock *sk = sock->sk;
DEFINE_WAIT(wait);
int done;
do {
@ -1942,10 +1942,10 @@ static int tipc_wait_for_connect(struct socket *sock, long *timeo_p)
if (signal_pending(current))
return sock_intr_errno(*timeo_p);
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
add_wait_queue(sk_sleep(sk), &wait);
done = sk_wait_event(sk, timeo_p,
sk->sk_state != TIPC_CONNECTING);
finish_wait(sk_sleep(sk), &wait);
sk->sk_state != TIPC_CONNECTING, &wait);
remove_wait_queue(sk_sleep(sk), &wait);
} while (!done);
return 0;
}