int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
		unsigned long start, int nr_pages, int write, int force,
		struct page **pages, struct vm_area_struct **vmas)
{
	int flags = FOLL_TOUCH;

	if (pages)
		flags |= FOLL_GET;
	if (write)
		flags |= FOLL_WRITE;
	if (force)
		flags |= FOLL_FORCE;

	return __get_user_pages(tsk, mm, start, nr_pages, flags, pages, vmas,
				NULL);
}
int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
		unsigned long start, int nr_pages, int write, int force,
		struct page **pages, struct vm_area_struct **vmas)
{
	int flags = FOLL_TOUCH;

	if (pages)
		flags |= FOLL_GET;
	if (write)
		flags |= FOLL_WRITE;
	if (force)
		flags |= FOLL_FORCE;

	return __get_user_pages(tsk, mm, start, nr_pages, flags, pages, vmas,
				NULL);
}