linux-kernel - Re: [PATCH 1/2] watchdog: update watchdog attributes atomically

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Message-ID: <20130726200734.GB21415@gmail.com>
Date:	Fri, 26 Jul 2013 22:07:34 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Don Zickus <dzickus@...hat.com>
Cc:	Michal Hocko <mhocko@...e.cz>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 1/2] watchdog: update watchdog attributes atomically


* Don Zickus <dzickus@...hat.com> wrote:

> On Fri, Jul 26, 2013 at 02:49:34PM +0200, Michal Hocko wrote:
> > proc_dowatchdog doesn't synchronize multiple callers which
> > might lead to confusion when two parallel callers might confuse
> > watchdog_enable_all_cpus resp. watchdog_disable_all_cpus (e.g. watchdog
> > gets enabled even if watchdog_thresh was set to 0 already).
> > 
> > This patch adds a local mutex which synchronizes callers to the sysctl
> > handler.
> > 
> > Signed-off-by: Michal Hocko <mhocko@...e.cz>
> 
> Acked-by: Don Zickus <dzickus@...hat.com>

Ack from you for both patches?

Thanks,

	Ingo
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