DW:

DW:
 - The 'flag' parameter of storeDirValidFileno got deleted when it
   became storeDirFSValidFileno (at least for diskd and ufs).
   This flag is important for rebuilding.  When the flag is set, it
   enables the out-of-range check against the filemap size.  Without
   this check, the filemap does not grow during the rebuild procedure.
   Instead, all objects with file numbers larger than the default (16k?)
   get declared invalid and most of the cached objects are lost.