linux-kernel - Re: [PATCH 09/10] workqueue: Implement system-wide nr_active enforcement for unbound workqueues

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Message-ID: <CAJhGHyAuoGNmaaDa0p+wiJMprXYVYnVV75PS4+kPy-fsPJVH8w@mail.gmail.com>
Date: Tue, 30 Jan 2024 00:00:22 +0800
From: Lai Jiangshan <jiangshanlai@...il.com>
To: Tejun Heo <tj@...nel.org>
Cc: linux-kernel@...r.kernel.org, Naohiro.Aota@....com, kernel-team@...a.com
Subject: Re: [PATCH 09/10] workqueue: Implement system-wide nr_active
 enforcement for unbound workqueues

Hello, Tejun

On Fri, Jan 26, 2024 at 1:06 AM Tejun Heo <tj@...nel.org> wrote:

> @@ -5121,6 +5374,9 @@ void workqueue_set_max_active(struct workqueue_struct *wq, int max_active)
>
>         wq->flags &= ~__WQ_ORDERED;
>         wq->saved_max_active = max_active;
> +       if (wq->flags & WQ_UNBOUND)
> +               wq->saved_min_active = min(wq->saved_min_active, max_active);
> +

wq_update_node_max_active() must be also called here.

Thanks
Lai

>         wq_adjust_max_active(wq);
>
>         mutex_unlock(&wq->mutex);