/dev, /etc, /var- and mkrwsize()

[shaulka at 012.net.il]

  With 2.10 and hardly anything added to the default nfsroot, du shows:
    16K for /dev, 1.8M for /etc and 78M for /var.
The large consumers of those 78M are:
    17M     nfsroot/var/lib/apt
    5.8M    nfsroot/var/lib/dpkg
    15M     nfsroot/var/cache
    41M     nfsroot/var/tmp

Perhaps mkrwsize() from subroutines-linux should create a
    5m for /etc
    another 10m for /var, where for /var the large consumers from above
will be excluded
   and another 100k for /dev

?
?