On Mon, Oct 06, 2014 at 01:50:36PM +0200, Cornelia Huck wrote: > On Sun, 5 Oct 2014 19:07:13 +0300 > "Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote: > > > Now that virtio core ensures config changes don't arrive during probing, > > drop config_enable flag in virtio net. > > On removal, flush is now sufficient to guarantee that no change work is > > queued. > > > > This help simplify the driver, and will allow setting DRIVER_OK earlier > > without losing config change notifications. > > > > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> > > --- > > drivers/net/virtio_net.c | 23 ++--------------------- > > 1 file changed, 2 insertions(+), 21 deletions(-) > > > > diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c > > index 59caa06..fa17afa 100644 > > --- a/drivers/net/virtio_net.c > > +++ b/drivers/net/virtio_net.c > > > @@ -1876,16 +1869,12 @@ static void virtnet_remove(struct virtio_device *vdev) > > unregister_hotcpu_notifier(&vi->nb); > > > > /* Prevent config work handler from accessing the device. */ > > Same comment as for the equivalent comment in the virtio-blk code. Same answer :) > > - mutex_lock(&vi->config_lock); > > - vi->config_enable = false; > > - mutex_unlock(&vi->config_lock); > > + flush_work(&vi->config_work); > > > > unregister_netdev(vi->dev); > > > > remove_vq_common(vi); > > > > - flush_work(&vi->config_work); > > - > > free_percpu(vi->stats); > > free_netdev(vi->dev); > > } > > @@ -1899,9 +1888,7 @@ static int virtnet_freeze(struct virtio_device *vdev) > > unregister_hotcpu_notifier(&vi->nb); > > > > /* Prevent config work handler from accessing the device */ > > dito Same here. > > - mutex_lock(&vi->config_lock); > > - vi->config_enable = false; > > - mutex_unlock(&vi->config_lock); > > + flush_work(&vi->config_work); > > > > netif_device_detach(vi->dev); > > cancel_delayed_work_sync(&vi->refill); _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
