> > if r* device is used - no so i can use raw device for that.
> > but this is not very easy to change partitioning every hour ;)
> >
> > raw file access would be nice.
>
> Why do you need this at all?
>
example - program that process files of hundred MB's or larger. with
buffer cache it's slower and pollutes bufcache on multiuser system.

another example will be movie playing