Re: [PATCH v4 4/5] rust: types: ForeignOwnable: Add type Target

["Benno Lossin" <lossin@kernel.org>]

On Thu Jun 26, 2025 at 10:20 PM CEST, Boqun Feng wrote:
> On Thu, Jun 26, 2025 at 10:00:42PM +0200, Danilo Krummrich wrote:
>> diff --git a/rust/kernel/types.rs b/rust/kernel/types.rs
>> index 3958a5f44d56..74c787b352a9 100644
>> --- a/rust/kernel/types.rs
>> +++ b/rust/kernel/types.rs
>> @@ -27,6 +27,9 @@
>>  /// [`into_foreign`]: Self::into_foreign
>>  /// [`PointedTo`]: Self::PointedTo
>>  pub unsafe trait ForeignOwnable: Sized {
>> +    /// The payload type of the foreign-owned value.
>> +    type Target;
>
> I think `ForeignOwnable` also implies a `T` maybe get dropped via a
> pointer from `into_foreign()`. Not sure it's worth mentioning though.

What? How would that happen?

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Cheers,
Benno