linux-kernel - Re: [PATCH v3] virtio_balloon: Convert "vballoon" kthread into a workqueue

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Date:	Thu, 20 Nov 2014 11:50:28 -0500
From:	Tejun Heo <tj@...nel.org>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Petr Mladek <pmladek@...e.cz>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jeff Epler <jepler@...ythonic.net>,
	Jiri Kosina <jkosina@...e.cz>,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] virtio_balloon: Convert "vballoon" kthread into a
 workqueue

On Thu, Nov 20, 2014 at 11:49:33AM -0500, Tejun Heo wrote:
> On Thu, Nov 20, 2014 at 06:47:11PM +0200, Michael S. Tsirkin wrote:
> > > There's cancel_work_sync() to stop the self-requeueing ones.
> > 
> > What happens if queue_work runs while cancel_work_sync is in progress?
> > Does it fail to queue?
> 
> cancel_work_sync() is guaranteed to take self-requeueing work items no
                                      ^ stop

-- 
tejun
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