extern int tape_do_io(struct tape_device *, struct tape_request *);
extern int tape_do_io_async(struct tape_device *, struct tape_request *);
extern int tape_do_io_interruptible(struct tape_device *, struct tape_request *);
-extern int tape_cancel_io(struct tape_device *, struct tape_request *);
void tape_hotplug_event(struct tape_device *, int major, int action);
static inline int