Hi Jason,

From: Jason Gunthorpe <jgg@nvidia.com>
Sent: Wednesday, March 10, 2021 5:39 AM

[...]

-Each function is passed the device_data that was originally registered
+Each function is passed the vdev that was originally registered
 in the vfio_register_group_dev() call above.  This allows the bus driver
-an easy place to store its opaque, private data.  The open/release
+to obtain its private data using container_of().  The open/release

I think the is to let VFIO device drivers (e.g. vfio_pci driver) to obtain
its private data by using container_of instead of let the bus driver.
right?

Regards,
Yi Liu