linux-kernel - Re: [PATCH for-3.20-fixes] workqueue: fix hang involving racing cancel[_delayed]_work_sync()'s for PREEMPT

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Message-ID: <20150210083526.GT11399@axis.com>
Date:	Tue, 10 Feb 2015 09:35:26 +0100
From:	Jesper Nilsson <jesper.nilsson@...s.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Rabin Vincent <rabinv@...s.com>, Jesper Nilsson <jespern@...s.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH for-3.20-fixes] workqueue: fix hang involving racing
 cancel[_delayed]_work_sync()'s for PREEMPT_NONE

On Mon, Feb 09, 2015 at 05:29:55PM +0100, Jesper Nilsson wrote:
> On Mon, Feb 09, 2015 at 05:15:27PM +0100, Tejun Heo wrote:
> > Hello,
> 
> Hi,
> 
> > Can you please verify that the following patch fixes the issue?
> 
> Rabin will have to report if it fixes it for his synthetic case,
> but I'll try it in my "real-world" jffs2 sync problem, and report
> after a couple of hours.

I let the test run for the night, and got no failures.
Before I got at most an hour of tests before lockup.

Tested-by: Jesper Nilsson <jesper.nilsson@...s.com>

/^JN - Jesper Nilsson
-- 
               Jesper Nilsson -- jesper.nilsson@...s.com
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