static inline vm_fault_t hugetlb_handle_userfault(struct vm_area_struct *vma,
						  struct address_space *mapping,
						  pgoff_t idx,
						  unsigned int flags,
						  unsigned long haddr,
						  unsigned long addr,
						  unsigned long reason)
static inline vm_fault_t hugetlb_handle_userfault(struct vm_fault *vmf,
						  struct address_space *mapping,
						  unsigned long reason)