Re: [PATCH v5 0/4] io_uring: extend bvec registration

Jens Axboe
2026-04-03T16:21:54Z

On 4/2/26 10:09 AM, Joanne Koong wrote:
> This series refactors and extends the io_uring registered buffers
> infrastructure to allow external subsystems to register pre-existing bvec
> arrays directly.
>
> The motivation for the patches in this series is to make fuse zero-copy
> possible. These patches are split out from a previous larger
> fuse-over-io_uring series [1]. The fuse zero-copy work that builds on top of
> this is in [2].
>
> Thanks,
> Joanne
>
> [1] https://lore.kernel.org/linux-fsdevel/20260116233044.1532965-1-joannelkoong@gmail.com/
> [2] https://lore.kernel.org/linux-fsdevel/20260324224532.3733468-9-joannelkoong@gmail.com/
>
> Changelog:
> v4: https://lore.kernel.org/io-uring/20260327172631.3380702-1-joannelkoong@gmail.com/
> v4 -> v5:
> * rebase to origin/for-7.1/io_uring
> * drop the io_uring_registered_mem_region_get() patch

Series looks good to me, but I don't think you used the right base? It
does not seem to apply to for-7.1/io_uring, patch 1 runs into issues on
the ublk part.

Since this touches both and applies to neither right now, maybe do a
respin and just base it on my for-next. Then I'll setup a
for-7.1/io_uring-fuse branch that is just for-7.1/io_uring and
for-7.1/block merged together.

--
Jens Axboe