What should we do about the nvme atomics mess?

[John Garry]

On 21/10/2025 16:02, Nilay Shroff wrote:

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>> Does the drive which you are using report NAWUPF as zero (as hinted)?
>>
>> If so, have you tried the followinghttps://lore.kernel.org/linux-nvme/20250820150220.1923826-1- 
>> john.g.garry at oracle.com/
>>
>> We were considering changing the NVMe driver to not use AWUPF at all...
> Yes, I just tested your patch with the latest upstream kernel on my drive,
> which reports a non-zero AWUPF but a zero NAWUPF.

Do you think that you could check with the OEM for updated firmware 
(that reports NAWUPF)?

You IBM guys (I guess that you work together) have been a great help for 
the atomic writes work, and I think that it would be unfortunate to lose 
the atomic write capability for the drives which you use. Or lose 
automatic capability (like in this patch).

Thanks,
John