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SubjectRe: [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4)

Does Task Management Command set help?
For those who speak FibreChannel, this has meaning.

I can be used as a means to test the depth of the protocol support for a
family of drives. This is what www.linuxdiskcert.org was to be about, and
maybe Jens will be able to make it happen. As I will be transfering the
domain th Jens this summer.

On Wed, 23 Apr 2003, Andrew Morton wrote:

> Andries Brouwer <aebr@win.tue.nl> wrote:
> >
> > On Wed, Apr 23, 2003 at 03:35:00PM -0700, Andrew Morton wrote:
> >
> > > What is special about the IDE ioctl approach?
> >
> > Usually one wants to use the standard commands for I/O.
> > But if the purpose is to talk to the drive (set password,
> > set native max, eject, change ZIP drive from big floppy
> > mode to removable disk mode, etc. etc.) then one needs
> > a means to execute IDE commands "by hand".
>
> Yes, but none of these are performance-critical and they don't involve
> large amnounts of data. A copy is OK.
>
> If all the rework against bio_map_user() and friends is needed for other
> reasons then fine. But it doesn't seem to be needed for the IDE taskfile
> ioctl.
>

Andre Hedrick
LAD Storage Consulting Group

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