linux-kernel - Re: [PATCH 4.2-rc5] workqueue: Make flush_workqueue() available again to non GPL modules

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Message-ID: <063D6719AE5E284EB5DD2968C1650D6D1CB735FD@AcuExch.aculab.com>
Date:	Wed, 5 Aug 2015 09:52:07 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4.2-rc5] workqueue: Make flush_workqueue() available
 again to non GPL modules

> From:       Tejun Heo 
> Date:       2015-08-04 18:05:20
> On Tue, Aug 04, 2015 at 11:26:04AM -0600, tim.gardner@...onical.com wrote:
> > From: Tim Gardner <tim.gardner@...onical.com>
> >
> > Commit 37b1ef31a568fc02e53587620226e5f3c66454c8 ("workqueue: move
> > flush_scheduled_work() to workqueue.h") moved the exported non GPL
> > flush_scheduled_work() from a function to an inline wrapper.
> > Unfortunately, it directly calls flush_workqueue() which is a GPL function.
> > This has the effect of changing the licensing requirement for this function
> > and makes it unavailable to non GPL modules.
> >
> > See commit ad7b1f841f8a54c6d61ff181451f55b68175e15a ("workqueue: Make
> > schedule_work() available again to non GPL modules") for precedent.
> >
> > Cc: Tejun Heo <tj@...nel.org>
> > Signed-off-by: Tim Gardner <tim.gardner@...onical.com>
>
> Applied to wq/for-4.3.

I hit this yesterday afternoon as well!

Can we get the fix into 4.2 itself ?

	David

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