linux-kernel - Re: [PATCH 1/2] workqueue: Use pwq->work_color for wq

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Message-ID: <CAJhGHyCf5db7W=kYkDrghcry18VBY1vNjiEiuBws6kOaBWWjzQ@mail.gmail.com>
Date: Wed, 3 Dec 2025 11:48:28 +0800
From: Lai Jiangshan <jiangshanlai@...il.com>
To: Tejun Heo <tj@...nel.org>
Cc: linux-kernel@...r.kernel.org, Lai Jiangshan <jiangshan.ljs@...group.com>
Subject: Re: [PATCH 1/2] workqueue: Use pwq->work_color for wq_barrier

Hello, Tejun,

On Wed, Dec 3, 2025 at 1:37 AM Tejun Heo <tj@...nel.org> wrote:
> "oh
> yeah, no new work items and all barriers match the target work items, so
> flushing should wait for the whole thing".

This is only true after commit d812796eb390 ("workqueue: Assign
a color to barrier work items") is applied.

Users should not depend on this behavior; if they do, their code
is already fragile.

Anyway, I’ll withdraw this patchset.

Thanks
Lai