map_attribute
static inline struct map_attribute *to_map_attr(struct attribute *attr)
return container_of(attr, struct map_attribute, attr);
struct map_attribute *map_attr = to_map_attr(attr);
static struct map_attribute map_type_attr = __ATTR_RO_MODE(type, 0400);
static struct map_attribute map_phys_addr_attr = __ATTR_RO_MODE(phys_addr, 0400);
static struct map_attribute map_virt_addr_attr = __ATTR_RO_MODE(virt_addr, 0400);
static struct map_attribute map_num_pages_attr = __ATTR_RO_MODE(num_pages, 0400);
static struct map_attribute map_attribute_attr = __ATTR_RO_MODE(attribute, 0400);