[PATCH 07/13] block: track zone conditions

[Bart Van Assche]

On 11/2/25 10:05 PM, Damien Le Moal wrote:
> On 11/1/25 06:17, Bart Van Assche wrote:
>> On 10/30/25 11:13 PM, Damien Le Moal wrote:
>>> Implement tracking of the runtime changes to zone conditions using
>>> the new cond field in struct blk_zone_wplug. The size of this structure
>>> remains 112 Bytes as the new field replaces the 4 Bytes padding at the
>>> end of the structure. For zones that do not have a zone write plug, the
>>> zones_cond array of a disk is used to track changes to zone conditions,
>>> e.g. when a zone reset, reset all or finish operation is executed.
>>
>> Why is it necessary to track the condition of sequential zones that do
>> not have a zone write plug? Please explain what the use cases are.
> 
> Because zones that do not have a zone write plug can be empty OR full.

Why does the block layer have to track this information? Filesystems can
easily derive this information from the filesystem metadata information,
isn't it?

Thanks,

Bart.