linux-kernel - Re: [PATCH 2/2] rust: init: add re-initialization functions

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Date: Sat, 04 May 2024 15:45:09 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, Wedson Almeida Filho <wedsonaf@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, Andreas Hindborg <a.hindborg@...sung.com>, rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] rust: init: add re-initialization functions

On 03.05.24 13:34, Alice Ryhl wrote:
> On Thu, Apr 25, 2024 at 11:34 PM Benno Lossin <benno.lossin@...ton.me> wrote:
>>
>> Sometimes it is necessary to split allocation and initialization into
>> two steps. One such situation is when reusing existing allocations
>> obtained via `Box::drop_contents`. See [1] for an example.
>> In order to support this use case add `re_[pin_]init` functions to the
>> pin-init API. These functions operate on already allocated smart
>> pointers that contain `MaybeUninit<T>`.
>>
>> Signed-off-by: Benno Lossin <benno.lossin@...ton.me>
>> Link: https://lore.kernel.org/rust-for-linux/f026532f-8594-4f18-9aa5-57ad3f5bc592@proton.me/ [1]
> 
> I'm not a big fan of the name. Perhaps we can use a name similar to
> `Box::write`?

Sure, what would be your suggestion? I can only think of `write_pinned`,
but no idea what to do for `impl Init<T>`...

-- 
Cheers,
Benno