[PATCH v6 14/18] drm/virtio: rework virtio_gpu_transfer_from_host_ioctl fencing

[Gerd Hoffmann]

On Wed, Jul 03, 2019 at 01:05:12PM -0700, Chia-I Wu wrote:
> On Tue, Jul 2, 2019 at 7:19 AM Gerd Hoffmann <kraxel at redhat.com> wrote:
> >
> > Switch to the virtio_gpu_array_* helper workflow.
> (just repeating my question on patch 6)
> 
> Does this fix the obj refcount issue?  When was the issue introduced?

obj refcount should be fine in both old and new code.

old code:
  drm_gem_object_lookup
  drm_gem_object_put_unlocked

new code:
  virtio_gpu_array_from_handles
  virtio_gpu_array_put_free (in virtio_gpu_dequeue_ctrl_func).

Or did I miss something?

cheers,
  Gerd