linux-kernel - Re: [PATCH v2 3/4] rust: miscdevice: Provide additional abstractions for iov

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Message-ID: <aG5NzRx7dIWzTwdf@google.com>
Date: Wed, 9 Jul 2025 11:09:01 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Andreas Hindborg <a.hindborg@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Alexander Viro <viro@...iv.linux.org.uk>, 
	Arnd Bergmann <arnd@...db.de>, Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>, 
	Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Trevor Gross <tmgross@...ch.edu>, 
	Danilo Krummrich <dakr@...nel.org>, Matthew Maurer <mmaurer@...gle.com>, Lee Jones <lee@...nel.org>, 
	linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org, 
	Benno Lossin <lossin@...nel.org>
Subject: Re: [PATCH v2 3/4] rust: miscdevice: Provide additional abstractions
 for iov_iter and kiocb structures

On Tue, Jul 08, 2025 at 04:51:11PM +0200, Andreas Hindborg wrote:
> "Alice Ryhl" <aliceryhl@...gle.com> writes:
> > +/// Wrapper for the kernel's `struct kiocb`.
> > +///
> > +/// The type `T` represents the private data of the file.
> 
> Could you give more context? Please describe the purpose for the type
> and intended use. Perhaps give an example that can be compile tested.

Right now, it's basically a `(&mut i64, &T)` tuple providing access to
the file position and private data. That's it.

Alice