net: sk_sleep() helper
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>
diff --git a/include/net/sock.h b/include/net/sock.h
index 56df440..8ab0514 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1160,6 +1160,10 @@
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 @@
* 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 @@
* 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));
}
/**