Date:        Thu, 16 Sep 1999 18:11:27 +0200
    From:        Guenther Grau <Guenther.Grau@bosch.com>
    Message-ID:  <37E116AF.EAE0676@bosch.com>

  | This should be possible, as the kernel should know
  | which processes have the directory open for reading and could
  | mark the fds as invalid for additional readdir() calls.

yes, that would be possible.   That is the (or one of the possible)
change in sematics that would be possible.   The question is then
whether the gain is worth all that work (and incompatibility with
other systems).

kre