#ifndef _LINUX_TASK_WORK_H
  #define _LINUX_TASK_WORK_H
  
  #include <linux/list.h>
  #include <linux/sched.h>

  typedef void (*task_work_func_t)(struct callback_head *);

  
  static inline void

  init_task_work(struct callback_head *twork, task_work_func_t func)

  {
  	twork->func = func;

  }

  int task_work_add(struct task_struct *task, struct callback_head *twork, bool);
  struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t);

  void task_work_run(void);
  
  static inline void exit_task_work(struct task_struct *task)
  {

  	task_work_run();

  }
  
  #endif	/* _LINUX_TASK_WORK_H */