linux-kernel - Re: [PATCH v4 00/11] md/llbitmap: md/md-llbitmap: introduce a new lockless bitmap

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Message-ID: <2c943ca4-7bd2-4c2e-8b7a-8f7edee4adff@huaweicloud.com>
Date: Tue, 22 Jul 2025 16:29:52 +0800
From: Li Nan <linan666@...weicloud.com>
To: Yu Kuai <yukuai@...nel.org>, corbet@....net, agk@...hat.co,
 snitzer@...nel.org, mpatocka@...hat.com, hch@....de, song@...nel.org,
 hare@...e.de
Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 dm-devel@...ts.linux.dev, linux-raid@...r.kernel.org, yukuai3@...wei.com,
 yangerkun@...wei.com, yi.zhang@...wei.com, johnny.chenyi@...wei.com
Subject: Re: [PATCH v4 00/11] md/llbitmap: md/md-llbitmap: introduce a new
 lockless bitmap



在 2025/7/22 1:15, Yu Kuai 写道:
> From: Yu Kuai <yukuai3@...wei.com>
> 
> Changes from v3:
>   - fix redundant setting mddev->bitmap_id in patch 6;
>   - add explanation of bitmap attributes in Documentation;
>   - add llbitmap/barrier_idle in patch 11;
>   - add some comments in patch 11;

[...]

Patches 01–10 look good:

Reviewed-by: Li Nan <linan122@...wei.com>

> 
> Yu Kuai (11):
>    md: add a new parameter 'offset' to md_super_write()
>    md: factor out a helper raid_is_456()
>    md/md-bitmap: support discard for bitmap ops
>    md: add a new mddev field 'bitmap_id'
>    md/md-bitmap: add a new sysfs api bitmap_type
>    md/md-bitmap: delay registration of bitmap_ops until creating bitmap
>    md/md-bitmap: add a new method skip_sync_blocks() in bitmap_operations
>    md/md-bitmap: add a new method blocks_synced() in bitmap_operations
>    md: add a new recovery_flag MD_RECOVERY_LAZY_RECOVER
>    md/md-bitmap: make method bitmap_ops->daemon_work optional
>    md/md-llbitmap: introduce new lockless bitmap
> 
>   Documentation/admin-guide/md.rst |   86 +-
>   drivers/md/Kconfig               |   11 +
>   drivers/md/Makefile              |    1 +
>   drivers/md/md-bitmap.c           |   15 +-
>   drivers/md/md-bitmap.h           |   45 +-
>   drivers/md/md-llbitmap.c         | 1598 ++++++++++++++++++++++++++++++
>   drivers/md/md.c                  |  288 ++++--
>   drivers/md/md.h                  |   20 +-
>   drivers/md/raid5.c               |    6 +
>   9 files changed, 1963 insertions(+), 107 deletions(-)
>   create mode 100644 drivers/md/md-llbitmap.c
> 

-- 
Thanks,
Nan