i_e2fs_uid_high
ip->i_e2fs_uid_high = (ip->i_uid >> 16) & 0xffff;
ip->i_e2fs_uid_high = 0;
ip->i_uid |= ip->i_e2fs_uid_high << 16;
ip->i_e2fs_uid_high = (uid >> 16) & 0xffff;
ip->i_e2fs_uid_high = 0;