diff options
| -rw-r--r-- | drivers/vhost/net.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 70ac60437d17..248b25008d1a 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -711,8 +711,12 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd) mutex_unlock(&vq->mutex); - if (oldubufs) + if (oldubufs) { vhost_ubuf_put_and_wait(oldubufs); + mutex_lock(&vq->mutex); + vhost_zerocopy_signal_used(vq); + mutex_unlock(&vq->mutex); + } if (oldsock) { vhost_net_flush_vq(n, index); |