if (REGION_NUMBER(addr) != REGION_HPAGE)
if (REGION_NUMBER(addr) != RGN_HPAGE)
int is_aligned_hugepage_range(unsigned long addr, unsigned long len){	if (len & ~HPAGE_MASK)		return -EINVAL;	if (addr & ~HPAGE_MASK)		return -EINVAL;	if (REGION_NUMBER(addr) != REGION_HPAGE)		return -EINVAL;	return 0;}