linux-kernel - Re: [PATCH v3 06/11] md/md-bitmap: delay registration of bitmap

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Message-ID: <59f357c2-c69a-69cb-9b79-9841f91ab533@huaweicloud.com>
Date: Mon, 21 Jul 2025 14:10:10 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: Hannes Reinecke <hare@...e.de>, Yu Kuai <yukuai1@...weicloud.com>,
 corbet@....net, agk@...hat.com, snitzer@...nel.org, mpatocka@...hat.com,
 song@...nel.org
Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 dm-devel@...ts.linux.dev, linux-raid@...r.kernel.org, yi.zhang@...wei.com,
 yangerkun@...wei.com, johnny.chenyi@...wei.com,
 "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH v3 06/11] md/md-bitmap: delay registration of bitmap_ops
 until creating bitmap

Hi,

在 2025/07/21 14:01, Hannes Reinecke 写道:
>> diff --git a/Documentation/admin-guide/md.rst 
>> b/Documentation/admin-guide/md.rst
>> index 356d2a344f08..03a9f5025f99 100644
>> --- a/Documentation/admin-guide/md.rst
>> +++ b/Documentation/admin-guide/md.rst
>> @@ -388,6 +388,9 @@ All md devices contain:
>>        bitmap
>>            The default internal bitmap
>> +If bitmap_type is not none, then additional bitmap attributes will be
>> +created after md device KOBJ_CHANGE event.
>> +
>>   If bitmap_type is bitmap, then the md device will also contain:
>>     bitmap/location
> 
> Please state _which_ attributes are created with the KOBJ_CHANGE
> event.

Just a notice in case you missed that following statements are exactly
the attributes for bitmap, or do I misunderstood somehow?

Thanks,
Kuai