Re: [PATCH scsi-misc-2.6 04/04] scsi: remove unnecessary scsi_wait_req_end_io()

[Tejun Heo <htejun@gmail.com>]

James Bottomley wrote:
> On Sun, 2005-05-15 at 10:15 +0900, Tejun Heo wrote:
> 
>> I've made two new versions of the same patch.  The first one just
>>BUG() such cases, and the second one makes scsi_prep_fn() tell
>>scsi_request_fn() to kill requests instead of doing itself w/
>>BLKPREP_KILL.  In both cases, I made req->flags error case a BUG().
>>If you don't like it, feel free to drop that part.
>>
>> Oh... one more thing.  I forgot to mention the scsi_kill_requests()
>>path.  As it's a temporary fix, I just left it as it is (terminate
>>commands w/ end_that_*).  I guess this patch should be pushed after
>>removal of that kludge.  But with or without this patch, that path
>>will leak resources.
> 
> 
> I suppose it's not surprising that I don't like either.
> 
> You remove the code that handles the BLKPREP_KILL case and then contort
> the request functions to try not to do it.  We have to handle this case,
> it's not optional, so just leave the code that does it in.

 IMHO, as special request BLKPREP_KILL path is a kernel bug, code that
try to handle it normally is unnecessary, but it's your call.

 Thanks.

-- 
tejun