linux-kernel - Re: [PATCH 3/3] rust: miscdevice: adjust the rust_misc

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Message-ID: <CAH5fLgismQ4whAKswp843T-=q_1+C7DB1qqg6rqk013DGr13iQ@mail.gmail.com>
Date: Tue, 21 Jan 2025 16:40:27 +0100
From: Alice Ryhl <aliceryhl@...gle.com>
To: Christian Schrefl <chrisi.schrefl@...il.com>
Cc: 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>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Trevor Gross <tmgross@...ch.edu>, Arnd Bergmann <arnd@...db.de>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Lee Jones <lee@...nel.org>, 
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] rust: miscdevice: adjust the rust_misc_device sample
 to use RegistrationData.

On Sun, Jan 19, 2025 at 11:11 PM Christian Schrefl
<chrisi.schrefl@...il.com> wrote:
>
> Share the mutex stored in RustMiscDevice between all instances using an Arc
> and the RegistrationData of MiscDeviceRegistration.
>
> This is mostly to Demonstrate the capability to share data in this way.
>
> Signed-off-by: Christian Schrefl <chrisi.schrefl@...il.com>

This change causes all open files to share the same value, instead of
it being per-fd.

Alice