Re: [PATCH v2 1/1] rust: add Work::disable_sync

[Alice Ryhl]

On Fri, May 01, 2026 at 10:11:22PM +0300, Onur Özkan wrote:
> Adds Work::disable_sync() as a safe wrapper for disable_work_sync().
> 
> Drivers can use this during teardown to stop new queueing and wait for
> queued or running work to finish before dropping related resources.
> 
> Signed-off-by: Onur Özkan <work@xxxxxxxxxxxxx>
> ---
>  rust/kernel/workqueue.rs | 121 ++++++++++++++++++++++++++-------------
>  1 file changed, 81 insertions(+), 40 deletions(-)
> 
> diff --git a/rust/kernel/workqueue.rs b/rust/kernel/workqueue.rs
> index 7e253b6f299c..d0f9b4ba7f27 100644
> --- a/rust/kernel/workqueue.rs
> +++ b/rust/kernel/workqueue.rs
> @@ -267,7 +267,7 @@ pub unsafe fn from_raw<'a>(ptr: *const bindings::workqueue_struct) -> &'a Queue
>  
>      /// Enqueues a work item.
>      ///
> -    /// This may fail if the work item is already enqueued in a workqueue.
> +    /// This may fail if the work item is already enqueued in a workqueue or disabled.
>      ///
>      /// The work item will be submitted using `WORK_CPU_UNBOUND`.
>      pub fn enqueue<W, const ID: u64>(&self, w: W) -> W::EnqueueOutput

Can you elaborate on the case where disable leads to failure here? Can
you not enqueue a work item again after disabling it? Is there a doc
test illustrating this case that I can run for myself to see the
behavior in action?

Alice