Re: [PATCH] Use queuedata accessors for device handler

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On Mon, Aug 22, 2011 at 03:35:43PM +0200, Hannes Reinecke wrote:
> 
> Starting multipath on a cciss device will cause a kernel
> warning to be triggered. Problem is that we're using the
> ->queuedata field of the request_queue to dereference the
> scsi device; however, for other (non-SCSI) devices this
> points to a totally different structure.
> So we should rather be using accessors here to make
> sure ->queuedata points to a valid sdev.

How do we match to attach a scsi device handler to a non-scsi queue?
I suspect that is the fundamental issue that needs addressing.

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