On Thu, Sep 09, 2021 at 04:38:46PM -0300, Jason Gunthorpe wrote: > Many of the mdev drivers use a simple counter for keeping track of the > available instances. Move this code to the core code and store the counter > in the mdev_type. Implement it using correct locking, fixing mdpy. > > Drivers provide a get_available() callback to set the number of available > instances for their mtypes which is fixed at registration time. The core > provides a standard sysfs attribute to return the available_instances. Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>