smalllblktosize
(((lbn) >= NDADDR || (ip)->i_size >= smalllblktosize(fs, (lbn) + 1)) \
(((lbn) >= NDADDR || (dip)->di_size >= smalllblktosize(fs, (lbn) + 1)) \
ip->i_size = smalllblktosize(fs, nb + 1);
if (nb != 0 && ip->i_size >= smalllblktosize(fs, lbn + 1)) {
if (ip->i_size < smalllblktosize(fs, lbn + 1))
(ip)->i_size >= smalllblktosize(fs, (lbn) + 1)) \
(dip)->di_size >= smalllblktosize(fs, (lbn) + 1)) \