[PATCHv10 0/9] write hints with nvme fdp, scsi streams

[Javier Gonzalez]

On 11.11.2024 07:51, Christoph Hellwig wrote:
>On Fri, Nov 08, 2024 at 05:43:44PM +0000, Javier Gonzalez wrote:
>> We have been iterating in the patches for years, but it is unfortunately
>> one of these series that go in circles forever. I don't think it is due
>> to any specific problem, but mostly due to unaligned requests form
>> different folks reviewing. Last time I talked to Damien he asked me to
>> send the patches again; we have not followed through due to bandwidth.
>
>A big problem is that it actually lacks a killer use case.  If you'd
>actually manage to plug it into an in-kernel user and show a real
>speedup people might actually be interested in it and help optimizing
>for it.
>

Agree. Initially it was all about ZNS. Seems ZUFS can use it.

Then we saw good results in offload to target on NVMe-OF, similar to
copy_file_range, but that does not seem to be enough. You seem to
indicacte too that XFS can use it for GC.

We can try putting a new series out to see where we are...