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

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Message-ID: <20141120162543.GA7466@redhat.com>
Date:	Thu, 20 Nov 2014 18:25:43 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Tejun Heo <tj@...nel.org>
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 11:07:46AM -0500, Tejun Heo wrote:
> On Thu, Nov 20, 2014 at 05:03:17PM +0100, Petr Mladek wrote:
> ...
> > @@ -476,7 +460,6 @@ static void virtballoon_remove(struct virtio_device *vdev)
> >  {
> >  	struct virtio_balloon *vb = vdev->priv;
> >  
> > -	kthread_stop(vb->thread);
> >  	remove_common(vb);
> >  	kfree(vb);
> >  }
> 
> Shouldn't the work item be flushed before removal is complete?

In fact, flushing it won't help because it can requeue itself, right?


> Thanks.
> 
> -- 
> tejun
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