Re: Worrisome IDE PIO transfers...

[Bartlomiej Zolnierkiewicz]

On Monday 01 of March 2004 14:23, Christophe Saout wrote:
> Am Mo, den 01.03.2004 schrieb Bartlomiej Zolnierkiewicz um 01:47:
> > http://www.kernel.org/pub/linux/kernel/people/bart/dm-byteswap-2.6.4-rc1.
> >patch
> >
> > Guess what's this? :)
>
> The thieves... they've stolen my precioussss. ;)
>
> > It is simply a stripped down dm-crypt.c, so all credits go to Christophe.
> > I have tested it quickly with loop device and it seems to work.
>
> Yes, it's not that complicated. Looks good.
> BTW: You don't need the km_types voodoo as the conversion routine is
> never called from a softirq context and you are allowed (but should try
> to avoid it) to sleep. You could add a conditional reschedule after
> kunmapping the buffers to keep the latency low on non-preempt kernels.

Yes, you are of course right.  I will remove "km_types voodoo".

> BTW: I've got some cleanups and a small fix in Andrew's latest tree
> (using a #define for the log prefix and I bvec array thingy).

Yep, I've seen them already.

Thanks,
Bartlomiej

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