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path: root/drivers/net/tun.c
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Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 807815fc9968..7cb105c103fe 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1293,7 +1293,8 @@ static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile,
if (unlikely(!noblock))
add_wait_queue(&tfile->wq.wait, &wait);
while (len) {
- current->state = TASK_INTERRUPTIBLE;
+ if (unlikely(!noblock))
+ current->state = TASK_INTERRUPTIBLE;
/* Read frames from the queue */
if (!(skb = skb_dequeue(&tfile->socket.sk->sk_receive_queue))) {
@@ -1320,9 +1321,10 @@ static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile,
break;
}
- current->state = TASK_RUNNING;
- if (unlikely(!noblock))
+ if (unlikely(!noblock)) {
+ current->state = TASK_RUNNING;
remove_wait_queue(&tfile->wq.wait, &wait);
+ }
return ret;
}