linux-kernel - Re: [PATCH 10/22] rust: add `ZeroableOption` and implement it instead of `Zeroable` for `Option<Box<T, A>>`

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Message-ID: <874j07emuv.fsf@kernel.org>
Date: Wed, 05 Mar 2025 12:30:16 +0100
From: Andreas Hindborg <a.hindborg@...nel.org>
To: "Benno Lossin" <benno.lossin@...ton.me>
Cc: "Danilo Krummrich" <dakr@...nel.org>,  "Miguel Ojeda"
 <ojeda@...nel.org>,  "Alex Gaynor" <alex.gaynor@...il.com>,  "Boqun Feng"
 <boqun.feng@...il.com>,  "Gary Guo" <gary@...yguo.net>,  Björn Roy Baron
 <bjorn3_gh@...tonmail.com>,  "Alice Ryhl" <aliceryhl@...gle.com>,  "Trevor
 Gross" <tmgross@...ch.edu>,  <rust-for-linux@...r.kernel.org>,
  <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 10/22] rust: add `ZeroableOption` and implement it
 instead of `Zeroable` for `Option<Box<T, A>>`

"Benno Lossin" <benno.lossin@...ton.me> writes:

> When making pin-init its own crate, `Zeroable` will no longer be defined
> by the kernel crate and thus implementing it for `Option<Box<T, A>>` is
> no longer possible due to the orphan rule.
> For this reason introduce a new `ZeroableOption` trait that circumvents
> this problem.
>
> Signed-off-by: Benno Lossin <benno.lossin@...ton.me>

Reviewed-by: Andreas Hindborg <a.hindborg@...nel.org>


Best regards,
Andreas Hindborg