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

[Li Nan]

在 2025/7/22 1:15, Yu Kuai 写道:
> From: Yu Kuai <yukuai3@xxxxxxxxxx>
>
> 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@xxxxxxxxxx>

> 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