linux-kernel - Re: [PATCH v7 3/6] rust: error: add EDEADLK

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Message-ID: <ec697cc0dc535b538c8792ea2a2c0805a3e3fb49.camel@redhat.com>
Date: Fri, 21 Nov 2025 14:49:00 -0500
From: Lyude Paul <lyude@...hat.com>
To: Onur Özkan <work@...rozkan.dev>, 
	rust-for-linux@...r.kernel.org
Cc: lossin@...nel.org, ojeda@...nel.org, alex.gaynor@...il.com, 
	boqun.feng@...il.com, gary@...yguo.net, a.hindborg@...nel.org, 
	aliceryhl@...gle.com, tmgross@...ch.edu, dakr@...nel.org,
 peterz@...radead.org, 	mingo@...hat.com, will@...nel.org,
 longman@...hat.com, felipe_life@...e.com, 	daniel@...lak.dev,
 bjorn3_gh@...tonmail.com, daniel.almeida@...labora.com, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 3/6] rust: error: add EDEADLK

Reviewed-by: Lyude Paul <lyude@...hat.com>

On Sat, 2025-11-01 at 19:10 +0300, Onur Özkan wrote:
> This is needed for the ww_mutex implementation so
> we can handle EDEADLK on lock attempts.
> 
> Signed-off-by: Onur Özkan <work@...rozkan.dev>
> ---
>  rust/kernel/error.rs | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
> index 1c0e0e241daa..9bf1072cfe19 100644
> --- a/rust/kernel/error.rs
> +++ b/rust/kernel/error.rs
> @@ -66,6 +66,7 @@ macro_rules! declare_err {
>      declare_err!(EPIPE, "Broken pipe.");
>      declare_err!(EDOM, "Math argument out of domain of func.");
>      declare_err!(ERANGE, "Math result not representable.");
> +    declare_err!(EDEADLK, "Resource deadlock avoided.");
>      declare_err!(EOVERFLOW, "Value too large for defined data type.");
>      declare_err!(ETIMEDOUT, "Connection timed out.");
>      declare_err!(ERESTARTSYS, "Restart the system call.");

-- 
Cheers,
 Lyude Paul (she/her)
 Senior Software Engineer at Red Hat

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