Re: 2.6.11-rc3-mm1 bad scheduling while atomic + lockup

Andrew Morton
2005-02-08T09:44:50Z

Jens Axboe <axboe@suse.de> wrote:
>
> > ->axboe!
>
> :-)
>
> The thing wants a rewrite. Ideally the serializing point would be a
> special request. The patch is still better than nothing right now, it's
> really easy to hang the device with hdparm in -linus since it's
> impossible to guess when it is safe to issue tuning actions from user
> space.

I'm not sure which is worse, really. I've never hung an interface with
hdparm, nor seen any reports of it. Making I/O errors deadly rather hurts.
Will it happen on all I/O errors, or was this a special case?