Re: [PATCH v9 11/12] kthread: Allow to modify delayed kthread work

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v9 11/12] kthread: Allow to modify delayed kthread work
Date	2016-06-20 22:30 +0200
Message-ID	<rMdZw-4vT-27@gated-at.bofh.it> (permalink)
References	<rKDv3-7Hj-3@gated-at.bofh.it> <rKDv3-7Hj-1@gated-at.bofh.it>
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On Thu, Jun 16, 2016 at 01:17:30PM +0200, Petr Mladek wrote:
> There are situations when we need to modify the delay of a delayed kthread
> work. For example, when the work depends on an event and the initial delay
> means a timeout. Then we want to queue the work immediately when the event
> happens.
> 
> This patch implements kthread_mod_delayed_work() as inspired workqueues.
> It cancels the timer, removes the work from any worker list and queues it
> again with the given timeout.
> 
> A very special case is when the work is being canceled at the same time.
> It might happen because of the regular kthread_cancel_delayed_work_sync()
> or by another kthread_mod_delayed_work(). In this case, we do nothing and
> let the other operation win. This should not normally happen as the caller
> is supposed to synchronize these operations a reasonable way.
> 
> Signed-off-by: Petr Mladek <pmladek@suse.com>

Acked-by: Tejun Heo <tj@kernel.org>

Thanks.

-- 
tejun

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[PATCH v9 11/12] kthread: Allow to modify delayed kthread work Petr Mladek <pmladek@suse.com> - 2016-06-16 13:20 +0200
  Re: [PATCH v9 11/12] kthread: Allow to modify delayed kthread work Tejun Heo <tj@kernel.org> - 2016-06-20 22:30 +0200

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