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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20141120162624.GA7479@redhat.com>
Date:	Thu, 20 Nov 2014 18:26:24 +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 06:25:43PM +0200, Michael S. Tsirkin wrote:
> 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?

>From that POV a dedicated WQ kept it simple.

> 
> > Thanks.
> > 
> > -- 
> > tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/