[CRIU] [PATCH bpf-next v1 1/8] io_uring: Implement eBPF iterator for registered buffers

[Alexei Starovoitov]

On Fri, Nov 19, 2021 at 09:45:23AM +0530, Kumar Kartikeya Dwivedi wrote:
> 
> Also, this work is part of GSoC. There is already code that is waiting for this
> to fill in the missing pieces [0]. If you want me to add a sample/selftest that
> demonstrates/tests how this can be used to reconstruct a task's io_uring, I can
> certainly do that. We've already spent a few months contemplating on a few
> approaches and this turned out to be the best/most powerful. At one point I had
> to scrap some my earlier patches completely because they couldn't work with
> descriptorless io_uring. Iterator seem like the best solution so far that can
> adapt gracefully to feature additions in something seeing as heavy development
> as io_uring.
> 
>   [0]: https://github.com/checkpoint-restore/criu/commit/cfa3f405d522334076fc4d687bd077bee3186ccf#diff-d2cfa5a05213c854d539de003a23a286311ae81431026d3d50b0068c0cb5a852
>   [1]: https://github.com/checkpoint-restore/criu/pull/1597

Is that the main PR? 1095 changed files? Is it stale or something?
Is there a way to view the actual logic that exercises these bpf iterators?