-#ifdef HAVE_POSIX_FADVISExxx
-
- /* with update we have write ops, so they will probably not be done by now, this means
- the buffers will not get freed. But calling this for the whole file - header
- will let the data off the hook as soon as it is written when if it is from a previous
- update cycle. Calling fdsync to force things is much too hard here. */