submount?

[David Zeuthen]

On Mon, 2004-05-31 at 20:55, Alan Cox wrote:
> On Mon, May 31, 2004 at 08:53:44PM +0200, David Zeuthen wrote:
> > FWIW, it works on my Liteon CDRW drive (only drive I tested). Jens
> > Axboe, seems a bit more confident in the availability of this
> > 
> > http://www.uwsg.iu.edu/hypermail/linux/kernel/0308.3/0511.html
> > 
> > so much in fact that he, uhmm, thinks magicdev should use it.
> 
> If it works sure. Ultimately I'd like to find a clean way to do a volumagic
> like thing with the I/O layer in kernel space. Let the daemon do handle
> translations and let the kernel do the I/O paths
> 

Wouldn't it suffice with just an option to mount(1), e.g. have as few
changes to how this impact user space as possible. I mean, at the end of
the day, isn't this just about the kernel locking/unlocking the drive
(same for e.g. USB storage) only when there is I/O?

Thanks,
David