Re: [PATCH v2 rcu 13/16] workqueue: Make queue_rcu_work() use call_rcu_flush()

From: Paul E. McKenney
Date: Mon Nov 21 2022 - 20:24:03 EST


On Mon, Nov 21, 2022 at 03:09:29PM -1000, Tejun Heo wrote:
> On Mon, Nov 21, 2022 at 05:04:18PM -0800, Paul E. McKenney wrote:
> > And another call_rcu() instance that cannot be lazy is the one
> > in queue_rcu_work(), given that callers to queue_rcu_work() are
> > not necessarily OK with long delays.
>
> So, this is fine but another thing we can do is propagating the distinction
> through the workqueue interface so that the the choice can be made by
> workqueue users. Would that make sense?

It might well! My thought was to wait to suggest that until we found a
real-life case where this was needed, but I have no objection to being
proactive here.

But the hard part... Thought for a good name? ;-)

Thanx, Paul