linux-kernel - Re: [PATCH v2 0/2] Fix the initialization of max_hw_wzeroes_unmap

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Message-ID: <44590d08-2127-e44d-d4f8-6ae9237dd53c@huaweicloud.com>
Date: Tue, 16 Sep 2025 08:49:13 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: John Garry <john.g.garry@...cle.com>, Zhang Yi
 <yi.zhang@...weicloud.com>, axboe@...nel.dk, linux-raid@...r.kernel.org
Cc: linux-block@...r.kernel.org, drbd-dev@...ts.linbit.com,
 linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
 pmenzel@...gen.mpg.de, hch@....de, martin.petersen@...cle.com,
 yi.zhang@...wei.com, yangerkun@...wei.com, "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH v2 0/2] Fix the initialization of
 max_hw_wzeroes_unmap_sectors for stacking drivers

Hi,

在 2025/09/15 18:43, John Garry 写道:
> On 12/09/2025 07:16, Zhang Yi wrote:
>> Hi, Jens!
>>
>> Can you take this patch set through the linux-block tree?
> 
> 
> md raid maintainers,
> 
> please try to get this picked up ASAP. As things stand, all these RAID 
> personalities will be broken for 6.17 on drives supporting/reporting 
> write zeroes.
> 

Not sure if Jens missed this, I'll pick patch 1 later today if Jens
doesn't apply.

Thanks,
Kuai

> Thanks
> 
>>
>> Thanks,
>> Yi.
>>
>> On 9/10/2025 7:11 PM, Zhang Yi wrote:
>>> From: Zhang Yi <yi.zhang@...wei.com>
>>>
>>> Changes since v1:
>>>   - Improve commit messages in patch 1 by adding a simple reproduction
>>>     case as Paul suggested and explaining the implementation differences
>>>     between RAID 0 and RAID 1/10/5, no code changes.
>>>
>>> v1: 
>>> https://urldefense.com/v3/__https://lore.kernel.org/linux-block/20250825083320.797165-1-yi.zhang@huaweicloud.com/__;!!ACWV5N9M2RV99hQ!JAN4eq3ePrspeto0Hn7563lg3392Lh44jM1oTbgxbDoClxVOh5B73QhGD53f9tiLxuxfJCr51PyAP55COV2TTZAt$ 
>>>
>>>
>>> This series fixes the initialization of max_hw_wzeroes_unmap_sectors in
>>> queue_limits for all md raid and drbd drivers, preventing
>>> blk_validate_limits() failures on underlying devices that support the
>>> unmap write zeroes command.
>>>
>>> Best regards,
>>> Yi.
>>>
>>> Zhang Yi (2):
>>>    md: init queue_limits->max_hw_wzeroes_unmap_sectors parameter
>>>    drbd: init queue_limits->max_hw_wzeroes_unmap_sectors parameter
>>>
>>>   drivers/block/drbd/drbd_nl.c | 1 +
>>>   drivers/md/md-linear.c       | 1 +
>>>   drivers/md/raid0.c           | 1 +
>>>   drivers/md/raid1.c           | 1 +
>>>   drivers/md/raid10.c          | 1 +
>>>   drivers/md/raid5.c           | 1 +
>>>   6 files changed, 6 insertions(+)
>>>
>>
>>
> 
> 
> .
>