Re: [PATCH v6 04/13] block: introduce dma map backed bio type

[Christoph Hellwig]

On Tue, Sep 22, 2026 at 02:54:25PM +0100, Pavel Begunkov wrote:
>>
>> Can you please expland on the splitting considerations a bit?  Preferably
>> both in a comment for the details, and in the commit log for how we
>> arrived at them and why they are fine for now?
>
> I'll add something to the commit log, but not sure which specific
> details in comments you mean. Do you want me to expand the comment
> above limiting the number of segments? Maybe I should add there that
> it's stricter than necessary and might cause more splitting than
> necessary? This one:

Yes, explain why we apply a relatively arbitrary limit not fully
exploiting the hardware capabilities, and why we thing that is okay.