mtd_info_user
struct mtd_info_user info;
if (copy_to_user(argp, &info, sizeof(struct mtd_info_user)))
#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
static inline int mtd_type_is_nand_user(const struct mtd_info_user *mtd)
typedef struct mtd_info_user mtd_info_t;