Re: [PATCH 14/17] scsi: replace custom rq mapping with blk_rq_map_kern_sgl()

[Boaz Harrosh <bharrosh@panasas.com>]

On 04/01/2009 08:05 PM, James Bottomley wrote:
> On Wed, 2009-04-01 at 20:00 +0300, Boaz Harrosh wrote:
>> On 04/01/2009 04:44 PM, Tejun Heo wrote:
>>> Impact: hack removal
>>>
>>> SCSI needs to map sgl into rq for kernel PC requests; however, block
>>> API didn't have such feature so it used its own rq mapping function
>>> which hooked into block/bio internals and is generally considered an
>>> ugly hack.  The private function may also produce requests which are
>>> bigger than queue per-rq limits.
>>>
>>> Block blk_rq_map_kern_sgl().  Kill the private implementation and use
>>> it.
>>>
>>> Signed-off-by: Tejun Heo <tj@kernel.org>
>> James, TOMO
>>
>> what happened to Tomo's patches that removes all this after fixing up
>> all users (sg.c)?
>>
>> I thought that was agreed and done? What is left to do for that to go
>> in.
> 
> They couldn't go in because they would break libosd.  You were going to
> send patches to fix libosd so it no longer relied on the exported
> function ... did that happen and I missed it?
> 

That's not related. I'm asking about the scsi ULD patches and finally the
patch to scsi_lib.c. libosd only conflicts with the very last patch to block
layer. I don't see how that prevents the cleanups to scsi?

And BTW, I did send RFC patches that removes usage of blk_rq_append_bio() and
did not receive any comments

> James
> 
> 

Boaz