net: sock_def_readable() and friends RCU conversion

[deliverable/linux.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 20a17938c62bc5c7358347174586c79df0f9b7b8..e525a6cf5587bb94b9200187d041866de6a67196 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -109,7 +109,7 @@ struct tun_struct {
 
        struct tap_filter       txflt;
        struct socket           socket;
-
+       struct socket_wq        wq;
 #ifdef TUN_DEBUG
        int debug;
 #endif
@@ -323,7 +323,7 @@ static void tun_net_uninit(struct net_device *dev)
        /* Inform the methods they need to stop using the dev.
         */
        if (tfile) {
-               wake_up_all(&tun->socket.wait);
+               wake_up_all(&tun->wq.wait);
                if (atomic_dec_and_test(&tfile->count))
                        __tun_detach(tun);
        }
@@ -398,7 +398,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
        /* Notify and wake up reader process */
        if (tun->flags & TUN_FASYNC)
                kill_fasync(&tun->fasync, SIGIO, POLL_IN);
-       wake_up_interruptible_poll(&tun->socket.wait, POLLIN |
+       wake_up_interruptible_poll(&tun->wq.wait, POLLIN |
                                   POLLRDNORM | POLLRDBAND);
        return NETDEV_TX_OK;
 
@@ -498,7 +498,7 @@ static unsigned int tun_chr_poll(struct file *file, poll_table * wait)
 
        DBG(KERN_INFO "%s: tun_chr_poll\n", tun->dev->name);
 
-       poll_wait(file, &tun->socket.wait, wait);
+       poll_wait(file, &tun->wq.wait, wait);
 
        if (!skb_queue_empty(&sk->sk_receive_queue))
                mask |= POLLIN | POLLRDNORM;
@@ -773,7 +773,7 @@ static ssize_t tun_do_read(struct tun_struct *tun,
 
        DBG(KERN_INFO "%s: tun_chr_read\n", tun->dev->name);
 
-       add_wait_queue(&tun->socket.wait, &wait);
+       add_wait_queue(&tun->wq.wait, &wait);
        while (len) {
                current->state = TASK_INTERRUPTIBLE;
 
@@ -804,7 +804,7 @@ static ssize_t tun_do_read(struct tun_struct *tun,
        }
 
        current->state = TASK_RUNNING;
-       remove_wait_queue(&tun->socket.wait, &wait);
+       remove_wait_queue(&tun->wq.wait, &wait);
 
        return ret;
 }
@@ -861,6 +861,7 @@ static struct rtnl_link_ops tun_link_ops __read_mostly = {
 static void tun_sock_write_space(struct sock *sk)
 {
        struct tun_struct *tun;
+       wait_queue_head_t *wqueue;
 
        if (!sock_writeable(sk))
                return;
@@ -868,8 +869,9 @@ static void tun_sock_write_space(struct sock *sk)
        if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags))
                return;
 
-       if (sk_sleep(sk) && waitqueue_active(sk_sleep(sk)))
-               wake_up_interruptible_sync_poll(sk_sleep(sk), POLLOUT |
+       wqueue = sk_sleep(sk);
+       if (wqueue && waitqueue_active(wqueue))
+               wake_up_interruptible_sync_poll(wqueue, POLLOUT |
                                                POLLWRNORM | POLLWRBAND);
 
        tun = tun_sk(sk)->tun;
@@ -1039,7 +1041,8 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
                if (!sk)
                        goto err_free_dev;
 
-               init_waitqueue_head(&tun->socket.wait);
+               tun->socket.wq = &tun->wq;
+               init_waitqueue_head(&tun->wq.wait);
                tun->socket.ops = &tun_socket_ops;
                sock_init_data(&tun->socket, sk);
                sk->sk_write_space = tun_sock_write_space;