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

Keith Busch
2024-10-09T15:06:29Z

On Wed, Oct 09, 2024 at 11:28:28AM +0200, Christoph Hellwig wrote:
> On Tue, Oct 08, 2024 at 08:44:28AM -0600, Keith Busch wrote:
> > Then let's just continue with patches 1 and 2. They introduce no new
> > user or kernel APIs, and people have already reported improvements using
> > it.
>
> They are still not any way actually exposing the FDP functionality
> in the standard though. How is your application going to align
> anything to the reclaim unit? Or is this another of the cases where
> as a hyperscaler you just "know" from the data sheet?

As far as I know, this is an inconsequential spec detail that is not
being considered by any applications testing this. And yet, the expected
imrpovements are still there, so I don't see a point holding this up for
that reason.