[v9] rust: add ww_mutex support

[PATCH v9 3/7] rust: error: add EDEADLK

Posted by Onur Özkan 1 month ago

This is needed for the ww_mutex implementation so
we can handle EDEADLK on lock attempts.

Signed-off-by: Onur Özkan <work@onurozkan.dev>
---
 rust/kernel/error.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
index 258b12afdcba..c2b95db23abc 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.");
-- 
2.51.2

Re: [PATCH v9 3/7] rust: error: add EDEADLK

Posted by Onur Özkan 1 month ago

On Fri,  2 Jan 2026 20:52:58 +0300
Onur Özkan <work@onurozkan.dev> wrote:

> This is needed for the ww_mutex implementation so
> we can handle EDEADLK on lock attempts.
> 
> Signed-off-by: Onur Özkan <work@onurozkan.dev>

I forgot to include

	Reviewed-by: Lyude Paul <lyude@redhat.com>
	Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>

tags from the v7 series for this file. :(

> ---
>  rust/kernel/error.rs | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
> index 258b12afdcba..c2b95db23abc 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.");