Re: [PATCH 00/13] Pass data temperature information to zoned UFS devices

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On Thu, Sep 21, 2023 at 07:27:08AM -0700, Bart Van Assche wrote:
> On 9/21/23 00:46, Niklas Cassel wrote:
> > Considering that this API (F_GET_FILE_RW_HINT / F_SET_FILE_RW_HINT) was
> > previously only used by NVMe (NVMe streams).
> That doesn't sound correct to me. I think support for this API was added
> in F2FS in November 2017 (commit 4f0a03d34dd4 ("f2fs: apply write hints
> to select the type of segments for buffered write")). That was a few
> months after NVMe stream support was added (June 2017) by commit
> f5d118406247 ("nvme: add support for streams and directives").
> > Should NVMe streams be brought back? Yes? No?
> From commit 561593a048d7 ("Merge tag 'for-5.18/write-streams-2022-03-18'
> of git://"): "This removes the write streams
> support in NVMe. No vendor ever really shipped working support for this,
> and they are not interested in supporting it."

It sounds like UFS is at the same stage that NVMe got to -- standard
exists, no vendor has committed to actually shipping it.  Isn't bringing
it back a little premature?

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