Re: [PATCH v3 05/12] rust: xarray: use `xas_load` instead of `xa_load` in `Guard::load`

[Alice Ryhl]

On Tue, Feb 10, 2026 at 10:23 PM Tamir Duberstein <tamird@xxxxxxxxxx> wrote:
>
> On Tue, Feb 10, 2026 at 12:59 PM Liam R. Howlett
> <Liam.Howlett@xxxxxxxxxx> wrote:
> > Is this a temporary limitation?
>
> Maybe? I don't think RfL has good abstractions for RCU yet. For
> example, exposing load directly on the xarray using xa_load would
> require a way to guarantee that the returned pointer's target isn't
> being concurrently mutated (e.g. under the xarray lock). I'm not aware
> of anyone asking for this, though.

It's relatively easy to add an rcu-backed load using the RCU
abstractions we have today. I already shared an RFC containing such a
method for the maple tree, and it would not be much different for
xarray.
https://lore.kernel.org/all/20260116-rcu-box-v1-0-38ebfbcd53f0@xxxxxxxxxx/

Alice