#ifndef _LINUX_CDEV_H
  #define _LINUX_CDEV_H

  #include <linux/kobject.h>
  #include <linux/kdev_t.h>
  #include <linux/list.h>

  struct file_operations;
  struct inode;
  struct module;

  struct cdev {
  	struct kobject kobj;
  	struct module *owner;

  	const struct file_operations *ops;

  	struct list_head list;
  	dev_t dev;
  	unsigned int count;
  };

  void cdev_init(struct cdev *, const struct file_operations *);

  
  struct cdev *cdev_alloc(void);
  
  void cdev_put(struct cdev *p);
  
  int cdev_add(struct cdev *, dev_t, unsigned);
  
  void cdev_del(struct cdev *);
  
  void cd_forget(struct inode *);

  extern struct backing_dev_info directly_mappable_cdev_bdi;

  #endif