Re: [PATCH v2 2/3] rust: kernel: implement iterators for ScatterList

[Martin Rodriguez Reboredo]

On 6/2/23 07:18, Qingsong Chen wrote:
> ScatterList could be transmuted from raw pointers of a valid
> `sg_table`. Then we can use those iterators to access the
> following normal entries.
>
> Signed-off-by: Qingsong Chen <changxian.cqs@xxxxxxxxxxxx>
> ---
> [...]
> +    /// Get an iterator for immutable references.
> +    pub fn iter(&self) -> Iter<'_> {
> +        Iter(ScatterList::as_ref(self.opaque.get()))
> +    }
> +
> +    /// Get an iterator for mutable references.
> +    pub fn iter_mut(&mut self) -> IterMut<'_> {
> +        IterMut(ScatterList::as_mut(self.opaque.get()))
> +    }

Per the previous commit, because both methods are unsafe you should put
the `SAFETY` comment on them.

> +}
> +
> [...]