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net: sk_sleep() helper

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Define a new function to return the waitqueue of a "struct sock".

static inline wait_queue_head_t *sk_sleep(struct sock *sk)
{
	return sk->sk_sleep;
}

Change all read occurrences of sk_sleep by a call to this function.

Needed for a future RCU conversion. sk_sleep wont be a field directly
available.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2010-04-20 13:03:51 +00:00
committed by David S. Miller
parent ab9304717f
commit aa39514516
46 changed files with 208 additions and 204 deletions
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10
include/net/sock.h
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@@ -1160,6 +1160,10 @@ static inline void sk_set_socket(struct sock *sk, struct socket *sock)
sk->sk_socket = sock;
}
static inline wait_queue_head_t *sk_sleep(struct sock *sk)
{
return sk->sk_sleep;
}
/* Detach socket from process context.
* Announce socket dead, detach it from wait queue and inode.
* Note that parent inode held reference count on this struct sock,
@@ -1346,8 +1350,8 @@ static inline int sk_has_allocations(const struct sock *sk)
* tp->rcv_nxt check sock_def_readable
* ... {
* schedule ...
* if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
* wake_up_interruptible(sk->sk_sleep)
* if (sk_sleep(sk) && waitqueue_active(sk_sleep(sk)))
* wake_up_interruptible(sk_sleep(sk))
* ...
* }
*
@@ -1368,7 +1372,7 @@ static inline int sk_has_sleeper(struct sock *sk)
* This memory barrier is paired in the sock_poll_wait.
*/
smp_mb__after_lock();
return sk->sk_sleep && waitqueue_active(sk->sk_sleep);
return sk_sleep(sk) && waitqueue_active(sk_sleep(sk));
}
/**