Re: [PATCH v7 0/3] FDP and per-io hints

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On Fri, Oct 04, 2024 at 08:18:11AM +0200, Javier González wrote:
>> And for anyone who followed the previous discussions of the patches
>> none of this should been new, each point has been made at least three
>> times before.
>
> Looking at the work you and Hans have been doing on XFS, it seems you
> have been successful at mapping the semantics of the temperature to
> zones (which has no semantics, just as FDP).
>
>    What is the difference between the mapping in zones and for FDP?

Probably not much, except for all the pitfalls in the FDP not quite hint
not madatory design.

> The whole point is using an existing interface to cover the use-case of
> people wanting hints in block.

And that's fine.  And that point all the way back for month is that
doing a complete dumb mapping in the driver for that is fundamentally
wrong.  Kanchan's previous series did about 50% of the work to get
it rid, but then everyone dropped dead and played politics.





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