On Fri, Feb 04, 2005 at 03:57:44PM -0800, Bill Studenmund wrote:
> Things like cache control, partition info, and wedge info are device
> abstractions that every (appropriate) device should support, and that I
> can see file systems and other kernel-level device users wanting to 
> access.
> 
> So I think the best thing to do is to come up with a clean and sane way to 
> make all IOCTL use kernel-able and to document it. :-)

Well.. you'd need an explicit kernel/userspace flag as far as I can see.
Like uio does.

- Frank