linux-kernel - Re: [PATCH] flush_work_sync vs. flush_scheduled_work Re: [PATCH] PHYLIB: IRQ event workqueue handling fixes

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Message-ID: <20071023092127.GB1847@ff.dom.local>
Date:	Tue, 23 Oct 2007 11:21:27 +0200
From:	Jarek Poplawski <jarkao2@...pl>
To:	Oleg Nesterov <oleg@...sign.ru>
Cc:	"Maciej W\. Rozycki" <macro@...ux-mips.org>,
	Andy Fleming <afleming@...escale.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Garzik <jgarzik@...ox.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] flush_work_sync vs. flush_scheduled_work Re: [PATCH] PHYLIB: IRQ event workqueue handling fixes

On Mon, Oct 22, 2007 at 10:02:59PM +0400, Oleg Nesterov wrote:
...
> If this work doesn't rearm itself - yes. (otherwise, the same ->func
> can run twice _at the same time_)
> 
> But again, in this case wait_on_work() after try_to_grab_pending() == 1
> doesn't block, so we can just do
> 
> 	if (cancel_work_sync(w))
> 		w->func();
> 

...but, if it were run just before work_clear_pending()?

Jarek P.
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