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SubjectRe: Linux 2.5.3-pre1-aia1
On Sun, Jan 20, 2002 at 04:12:36PM -0800, Andre Hedrick wrote:

> > > > We only read out 4k thus the device has the the next 4k we may be wanting
> > > > ready. Look at it as a dirty prefetch, but eventally the drive is going
> > > > to want to go south, thus [lost interrupt]
> > >
> > > Even if the drive is programmed for 16 sectors in multi mode, it still
> > > must honor lower transfer sizes. The fix I did was not to limit this,
> > > but rather to only setup transfers for the amount of sectors in the
> > > first chunk. This is indeed necessary now that we do not have a copy of
> > > the request to fool around with.
>
> Listen and for just a second okay.
>
> Since the set multimode command is similar to the set transfer rate, if
> you program the drive to run at U100 but the host can feed only U33 you
> have problems. Much of this simple arguement is the same answer for
> multimode.
>
> Same thing here but a variation, of the operations,

So you're saying that if you program the drive to multimode 16, you
can't read a single sector and always have to read 16? That not only
doesn't make sense to me, but it also contradicts anything that I've
heard before.

--
Vojtech Pavlik
SuSE Labs
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