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

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Message-ID: <20250910111107.3247530-1-yi.zhang@huaweicloud.com>
Date: Wed, 10 Sep 2025 19:11:05 +0800
From: Zhang Yi <yi.zhang@...weicloud.com>
To: linux-block@...r.kernel.org,
	linux-raid@...r.kernel.org,
	drbd-dev@...ts.linbit.com
Cc: linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	john.g.garry@...cle.com,
	pmenzel@...gen.mpg.de,
	hch@....de,
	martin.petersen@...cle.com,
	axboe@...nel.dk,
	yi.zhang@...wei.com,
	yi.zhang@...weicloud.com,
	yukuai3@...wei.com,
	yangerkun@...wei.com
Subject: [PATCH v2 0/2] Fix the initialization of max_hw_wzeroes_unmap_sectors for stacking drivers

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://lore.kernel.org/linux-block/20250825083320.797165-1-yi.zhang@huaweicloud.com/

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(+)

-- 
2.46.1