On 6/5/24 15:49, Christoph Hellwig wrote:
>> +    /*
>> +     * If the limits are larger than the number of mapped sequential zones,
>> +     * assume no limits. Note that blk_revalidate_disk_zones() also executes
>> +     * this adjustment, but only for mapped devices that use zone write
>> +     * plugging, that is, for mapped devices needing zone append emulation.
>> +     * So for DM devices using native zone append of the target devices, we
>> +     * need to adjust the zone resource limits here.
>> +     */
>> +    if (lim->max_active_zones > zlim.mapped_nr_seq_zones)
>> +            lim->max_active_zones = 0;
>> +    if (lim->max_open_zones > zlim.mapped_nr_seq_zones)
>> +            lim->max_open_zones = 0;
> 
> Is there any good reason to not just do this unconditionally in common
> code?

I can. I need to tweak the early return for the case where the DM device does
not use zone write plugging. Let me do that.

-- 
Damien Le Moal
Western Digital Research


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