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SubjectRe: [PATCH for-3.20-fixes] workqueue: fix hang involving racing cancel[_delayed]_work_sync()'s for PREEMPT_NONE
On Mon, Mar 02, 2015 at 01:26:15PM +0100, Jesper Nilsson wrote:
> On Mon, Feb 09, 2015 at 05:15:27PM +0100, Tejun Heo wrote:
> > Hello,
>
> Hi!
>
> > This patch removes the possible hang by updating __cancel_work_timer()
> > to explicitly wait for clearing of CANCELING rather than invoking
> > flush_work() after try_to_grab_pending() fails with -ENOENT. The
> > explicit wait uses the matching bit waitqueue for the CANCELING bit.
> >
> > Link: http://lkml.kernel.org/g/20150206171156.GA8942@axis.com
> >
> > Signed-off-by: Tejun Heo <tj@kernel.org>
> > Reported-by: Rabin Vincent <rabin.vincent@axis.com>
> > Cc: stable@vger.kernel.org
>
> What's the status on this patch, it's not in 4.0-rc1 at least?
> Is it queued for the 3.18 stable branch?

Sorry about the delay. Applied to wq/for-4.0-fixes. Will push out in
a week or so.

Thanks.

--
tejun


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