Re: [PATCH 0/2] configfs: Constify some fileds in struct config_item_type

[Christophe JAILLET]

Le 29/10/2025 à 08:18, Andreas Hindborg a écrit :
> "Christophe JAILLET" <christophe.jaillet@xxxxxxxxxx> writes:
>
> > These 2 patches constify ct_item_ops and ct_group_ops in struct
> > config_item_type.
> >
> > When/if they are applied, I'll send some patchess in each subsystem to
> > constify the corresponding structures.
> >
> > This 2 steps approach is IMHO easier way to make these changes.
> > This avoids long series and cover-letter/first patches sent to many
> > maintainers and lists.
> >
> > However, if you prefer things to be done in the same serie, I can do
> > that as well.
>
> Looks good to me. Please also include a patch to fix up the rust
> bindings in the 2nd step:
>
> diff --git a/rust/kernel/configfs.rs b/rust/kernel/configfs.rs
> index 318a2f073d1c7..468c8c4170d5e 100644
> --- a/rust/kernel/configfs.rs
> +++ b/rust/kernel/configfs.rs
> @@ -755,8 +755,8 @@ pub const fn new_with_child_ctor<const N: usize, Child>(
>                   Self {
>                       item_type: Opaque::new(bindings::config_item_type {
>                           ct_owner: owner.as_ptr(),
> -                        ct_group_ops: GroupOperationsVTable::<Data, Child>::vtable_ptr().cast_mut(),
> -                        ct_item_ops: ItemOperationsVTable::<$tpe, Data>::vtable_ptr().cast_mut(),
> +                        ct_group_ops: GroupOperationsVTable::<Data, Child>::vtable_ptr(),
> +                        ct_item_ops: ItemOperationsVTable::<$tpe, Data>::vtable_ptr(),
>                           ct_attrs: core::ptr::from_ref(attributes).cast_mut().cast(),
>                           ct_bin_attrs: core::ptr::null_mut(),
>                       }),
> @@ -773,7 +773,7 @@ pub const fn new<const N: usize>(
>                       item_type: Opaque::new(bindings::config_item_type {
>                           ct_owner: owner.as_ptr(),
>                           ct_group_ops: core::ptr::null_mut(),
> -                        ct_item_ops: ItemOperationsVTable::<$tpe, Data>::vtable_ptr().cast_mut(),
> +                        ct_item_ops: ItemOperationsVTable::<$tpe, Data>::vtable_ptr(),
>                           ct_attrs: core::ptr::from_ref(attributes).cast_mut().cast(),
>                           ct_bin_attrs: core::ptr::null_mut(),
>                       }),

I'm not a big fan of mixing c and rs files updates in the same commit.
And, as I don't know rust, I'm reluctant to changes things that I don't 
understand and I'm not able to at least compile test.

Can s.o. send this change as a follow-up patch?

CJ

> Best regards,
> Andreas Hindborg