int class_register_type(struct obd_ops *, struct md_ops *, bool enable_proc,
struct lprocfs_vars *module_vars,
const char *nm, struct lu_device_type *ldt);
int class_register_type(struct obd_ops *, struct md_ops *, bool enable_proc,
struct lprocfs_vars *module_vars,
const char *nm, struct lu_device_type *ldt);