Re: SHM_LOCK under Linux ... do we use this?

"Marc G. Fournier" <scrappy@postgresql.org> writes:
>      A privileged user can prevent or allow swapping of a shared memory
>      segment with the following cmds:
>         SHM_LOCK    prevents swapping of a shared memory segment. The user
>                     must fault in any pages that are required to be present
>                     after ...

> I've done a grep through the code, to see if its something that we do use, and
> it doesn't seem to come back with anything ...

No, we don't.  "privileged user" means root, so it's not possible for us
to set that.
        regards, tom lane