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

[Andrew Morton]

Jens Axboe <axboe@xxxxxxx> 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?
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