Re: [dm-devel] Re: [PATCH RFC] move scsi parts of dm hw handlers to scsi layer

[Mike Christie <michaelc cs wisc edu>]

Mike Christie wrote:
> Hannes Reinecke wrote:
>>> The patch below begins to push the scsi hw handler code down to the
>>> scsi
>>> layer. I only began to covert dm-emc.c and it only hooks in at the
>>> sense
>>> decoding in scsi_error.c. I wanted to make sure I was going about the
>>> module loading and binding correctly. With a new target bus we could
>>> do
>>> some driver model stuff instead, but I was not sure if that was
>>> appropriate for this?
>>>
>> Why don't we use scsi_devinfo for this?
> 
> I was adding my fields when I noticed this comment:
> 
> 
>  * Do not add to this list, use the command line or proc interface to add
>  * to the scsi_dev_info_list. This table will eventually go away.
> 
> 
>> We have to have some sort of device table anyway as these handlers are
>> far from being generic, so any sense code which triggers action on one
>> device might be perfectly ok for others.
> 
> When I was looking for the history of that commet, I thought I read that
> we are supposed to be moving to some userspace approach that pushes that
> info down via some magic interface.
> 

I added this comment at the wrong place. I meant to say I thought we are
supposed to be moving away from the kernel devinfo list to some
userspace one that gets sent down via the module_param or some new magic
interface.