Messages in this thread |  | | Date | Mon, 2 Jun 2003 12:43:14 +0200 | From | Jens Axboe <> | Subject | Re: 2.4.20: Proccess stuck in __lock_page ... |
| |
On Wed, May 28 2003, Thomas Tonino wrote: > Jens Axboe wrote: > > >Lemme guess, hard drive on the same channel as the burner? There's > >nothing we can do about that, hardware limitation. > > hmmm... most drives these days have a command to read free buffer capacity, > so there is no need to send more than the drive can swallow - and no need > to tie up the channel.
As we cannot do more than 128kb in a single request (cdrecord uses 63kb for writing), there's no problem there. I think you are misunderstanding me. This is not a problem with ide layer starving the hard drive by continually sending writes to the cd-r, it's a problem with not being able to preempt service for a single command duration.
> >The reason you see it > >during fixation is because that's one long single command, and we cannot > >preempt the channel and service requests while that is going on. > > But this may be the exception that breaks the rule. Bah.
No, that is the entire problem.
-- Jens Axboe
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |