Re: [PATCH v6 v6 0/3] ext4: improve mballoc statistics reporting and control

[liubaolin <liubaolin12138@163.com>]

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在 2026/6/24 17:38, Baolin Liu 写道:
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> At 2026-05-24 09:54:18, "Baolin Liu" <liubaolin12138@163.com> wrote:
>>From: Baolin Liu <liubaolin@kylinos.cn>
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>>This series improves mballoc statistics reporting and control by adding
>>blocks_allocated to /proc/fs/ext4/<dev>/mb_stats, using
>>READ_ONCE()/WRITE_ONCE() for concurrent accesses to s_mb_stats, and
>>allowing mballoc stats to be controlled through
>>/proc/fs/ext4/<dev>/mb_stats.
>>
>>Changes in v6:
>> - Serialize proc and sysfs updates to s_mb_stats with a mutex so that
>>   clearing mb_stats through the proc control path cannot race with
>>   concurrent administrative writes.
>>
>>Baolin Liu (3):
>>  ext4: add blocks_allocated to mb_stats output
>>  ext4: use READ_ONCE/WRITE_ONCE for s_mb_stats
>>  ext4: allow controlling mballoc stats through proc mb_stats
>>
>> Documentation/ABI/testing/sysfs-fs-ext4 |  3 +-
>> Documentation/admin-guide/ext4.rst      |  9 ++-
>> Documentation/filesystems/proc.rst      | 13 +---
>> fs/ext4/ext4.h                          |  2 +
>> fs/ext4/mballoc.c                       | 58 ++++++++++++++----
>> fs/ext4/sysfs.c                         | 80 ++++++++++++++++++++++++-
>> 6 files changed, 135 insertions(+), 30 deletions(-)
>>
>>-- 
>>2.51.0