Re: [PATCH RFC 00/24] scsi: enable reserved commands for LLDDs

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On 8/23/19 3:26 PM, John Garry wrote:
> On 29/05/2019 14:28, Hannes Reinecke wrote:
>> Hi all,
>>
>> quite some drivers use internal commands for various purposes, most
>> commonly sending TMFs or querying the HBA status.
>> While these commands use the same submission mechanism than normal
>> I/O commands, they will not be counted as outstanding commands,
>> requiring those drivers to implement their own mechanism to figure
>> out outstanding commands.
>> This patchset enables the use of reserved tags for the SCSI midlayer,
>> enabling LLDDs to rely on the block layer for tracking outstanding
>> commands.
>> More importantly, it allows LLDD to request a valid tag from the block
>> layer without having to implement some tracking mechanism within the
>> driver. This removes quite some hacks which were required for some
>> drivers (eg. fnic or snic).
>>
>> As usual, comments and reviews are welcome.
>>
> 
> Hi Hannes,
> 
> I was wondering if you have any plans to progress this series?
> 
> I don't mind helping out...
> 
Thanks for the reminder.
I'll need to re-evaluate this where we stand now with shared tags;
this patchset partially relies on them.
Will be sending an updated patchset.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      Teamlead Storage & Networking
hare@xxxxxxx			                  +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 247165 (AG München), GF: Felix Imendörffer



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