Re: [BK PATCHES] add ata scsi driver

Jens Axboe
2003-05-27T19:30:20Z

On Tue, May 27 2003, Linus Torvalds wrote:
>
> On Tue, 27 May 2003, Jens Axboe wrote:
> >
> > Here's something ridicolously simple, that just wont start a new tag if
> > the oldest tag is older than 100ms. Clearly nothing for submission, but
> > it gets the point across.
>
> Yes, I think something like this should work very well.

Agree, it should take the edge of crappy hardware at least.

> In fact, it might fit in very well indeed with AS - and in general it
> might be a good idea to have some nice interface for the IO scheduler to
> give this kind of ordering hints down to the hardware.

And deadline, they share the same request expire mechanism. But I read
your hint, I'll add the hint and fix this for real. Was waiting for the
other tcq patch to be comitted as they overlap, but I see that is in
so...

--
Jens Axboe