linux-kernel - [PATCH v5 0/2] make logical block size configurable

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Message-Id: <20250918115759.334067-1-linan666@huaweicloud.com>
Date: Thu, 18 Sep 2025 19:57:57 +0800
From: linan666@...weicloud.com
To: corbet@....net,
	song@...nel.org,
	yukuai3@...wei.com,
	linan122@...wei.com,
	hare@...e.de,
	xni@...hat.com
Cc: linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-raid@...r.kernel.org,
	martin.petersen@...cle.com,
	linan666@...weicloud.com,
	yangerkun@...wei.com,
	yi.zhang@...wei.com
Subject: [PATCH v5 0/2] make logical block size configurable

From: Li Nan <linan122@...wei.com>

v5: in patch2:
    Fix typo. Add reproducer in log.

v4:
 patch 1: add fix tag.
 patch 2:
 - add documentation for sysfs.
 - only support metadata format 1.x.
 - do not call md_update_sb when writing sysfs. mddev->pers is NULL here.
 - return directly before hold lock in lbs_store.

v3:
 - logical_block_size must not exceed PAGE_SIZE for bio device.
 - Assign lim to mddev rather than to gendisk in mddev_stack_rdev_limits().
 - Remove the patch that modifies the return value.

v2: No new exported interfaces are introduced.

Li Nan (2):
  md: prevent adding disks with larger logical_block_size to active
    arrays
  md: allow configuring logical block size

 Documentation/admin-guide/md.rst |  7 +++
 drivers/md/md.h                  |  1 +
 include/uapi/linux/raid/md_p.h   |  3 +-
 drivers/md/md-linear.c           |  1 +
 drivers/md/md.c                  | 82 ++++++++++++++++++++++++++++++++
 drivers/md/raid0.c               |  1 +
 drivers/md/raid1.c               |  1 +
 drivers/md/raid10.c              |  1 +
 drivers/md/raid5.c               |  1 +
 9 files changed, 97 insertions(+), 1 deletion(-)

-- 
2.39.2