  Synchronization of flushing modified pages? 
 The Question is:
 
Mapping Files:
When using the SYS$CRMPSC system service, when
are the modified pages written to disk?  Are the
modified pages written as soon as the SYS$DELTVA
system service is called or are the modified
pages cached somewhere for Swapper to handle
later?
 
 
Thanks.
 
 
 The Answer is:
 
  The pages are written when OpenVMS is ready.
 
  If some form of synchronization is required, please see
  the sys$updsec[w] system service call.  Also see previous
  discussions of sys$updsec[w] here in Ask The Wizard.
 
