[dm-devel] [PATCH v4 00/11] Zoned block device support improvements

[Jens Axboe]

On 10/14/18 6:45 PM, Damien Le Moal wrote:
> Jens,
> 
> On 2018/10/14 7:43, Jens Axboe wrote:
>> On 10/12/18 4:08 AM, Damien Le Moal wrote:
>>> This series improves zoned block device support (reduce overhead) and
>>> introduces many simplifications to the code (overall, there are more deletions
>>> than insertions).
>>>
>>> In more details:
>>> * Patches 1 to 3 are SCSI side (sd driver) cleanups and improvements reducing
>>>   the overhead of report zones command execution during disk scan and
>>>   revalidation.
>>> * Patches 4 to 9 improve the useability and user API of zoned block devices.
>>> * Patch 10 is the main part of this series. This patch replaces the
>>>   REQ_OP_ZONE_REPORT BIO/request operation for executing report zones commands
>>>   with a block device file operation, removing the need for the command reply
>>>   payload in-place rewriting in the BIO buffer. This leads to major
>>>   simplification of the code in many places.
>>> * Patch 11 further simplifies the code of low level drivers by providing a
>>>   generic implementation of zoned block device request queue zone bitmaps
>>>   initialization and revalidation.
>>>
>>> Please consider the addition of these patches in 4.20.
>>> Comments are as always welcome.
>>
>> How do we want to funnel this series? 1-3 look separate, so perhaps
>> they should go through the scsi tree. Then I can take the rest. Or do
>> some of the later ones depend on 1-3 being in, in terms of applying
>> cleanly?  I can also take all of them, looks like only #3 needs a
>> SCSI ack.
> 
> Patch 10 and 11 will not apply cleanly for the scsi part without 1-3
> in first.  1-3, 10 and 11 would need an ack/review from Martin (SCSI).
> And 10-11 also probably need an ack/review from Mike for the DM
> changes.

Probably want to start pinging people, if you're targeting 4.20 with
this...

-- 
Jens Axboe