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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 0ee725ced511..9eae04afa9a0 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -599,9 +599,9 @@ static void iscsi_sw_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
         set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
         write_unlock_bh(&tcp_sw_conn->sock->sk->sk_callback_lock);
 
-        if (sock->sk->sk_sleep && waitqueue_active(sock->sk->sk_sleep)) {
+        if (sk_sleep(sock->sk) && waitqueue_active(sk_sleep(sock->sk))) {
                 sock->sk->sk_err = EIO;
-                wake_up_interruptible(sock->sk->sk_sleep);
+                wake_up_interruptible(sk_sleep(sock->sk));
         }
 
         iscsi_conn_stop(cls_conn, flag);