MPW_WAITLIMIT

   MPW_WAITLIMIT sets the number of pages on the modified-page list
   that causes a process to wait until the next time the modified-
   page writer writes the modified list. This parameter limits the
   rate at which any single process can produce modified pages. If
   this value is less than MPW_HILIMIT, a system deadlock occurs.
   The value for this parameter is normally equal to MPW_HILIMIT.

   MPW_WAITLIMIT has the AUTOGEN and DYNAMIC attributes.