My original question was:
>We have a problem with with a set of processes that uses mmap: the
>file that is mapped by mmap gets corruped every now and then. I would
>therefore like to hear if anybody on the list has had similar problems
>and, maybe, found a work-around.
The answer came from Dr. Tom Blinn <tpb_at_zk3.dec.com>:
>I checked with our VM wizard, and he said this:
>
> (Message aom:5262)
> Delivery-Date: Tue, 07 Mar 95 13:40:03 -0500
> Message-Id: <9503071840.AA10003_at_alpha.zk3.dec.com>
> To: "Dr. Tom Blinn, 603-881-0646" <tpb>
> Subject: Re: Customer reports problems using mmap(), data corruption
> In-Reply-To: Your message of "Tue, 07 Mar 95 13:21:08 EST."
> <9503071821.AA00876_at_doctor.zk3.dec.com>
> Date: Tue, 07 Mar 95 13:40:01 -0500
> From: woodman
>
> Yes, I do know what is wrong, he needs Revision 1.1.65.5 of
> file vfs_ubc.c. This is a bugfix that insures proper synchronization
> between the UBC and the pmap.
>
> There is a patch for this. Refer to CLD HPAQA1f68
>
>So, you need to contact your Digital CSC and get the patch.
I haven't checked out the patch yet, as our customer now wants to move
to OSF/1 V3.2 :->
-- tonny
Received on Mon Mar 13 1995 - 05:32:05 NZDT