Re: [PATCH 2/2 wq/for-6.9] async: Use a dedicated unbound workqueue with raised min_active

From: Tejun Heo
Date: Fri Feb 09 2024 - 16:19:35 EST

On Thu, Feb 08, 2024 at 02:14:16PM -1000, Tejun Heo wrote:
> Async can schedule a number of interdependent work items. However, since
> 5797b1c18919 ("workqueue: Implement system-wide nr_active enforcement for
> unbound workqueues"), unbound workqueues have separate min_active which sets
> the number of interdependent work items that can be handled. This default
> value is 8 which isn't sufficient for async and can lead to stalls during
> resume from suspend in some cases.
> Let's use a dedicated unbound workqueue with raised min_active.
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
> Link:
> Reported-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>

Applying to wq/for-6.9. Rafael, if you have any objections, please holler.