#include <linux/mutex.h>
#include <linux/kref.h>
+#include <linux/sysfs.h>
struct hd_geometry;
struct mtd_info;
int open;
struct kref ref;
struct gendisk *disk;
+ struct attribute_group *disk_attributes;
struct task_struct *thread;
struct request_queue *rq;
spinlock_t queue_lock;