linux-kernel - Re: [PATCH] workqueue: warn if memory reclaim tries to flush !WQ_MEM

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Message-ID: <20151207155808.GG9175@mtj.duckdns.org>
Date:	Mon, 7 Dec 2015 10:58:08 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ulrich Obergfell <uobergfe@...hat.com>,
	Ingo Molnar <mingo@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH] workqueue: warn if memory reclaim tries to flush
 !WQ_MEM_RECLAIM workqueue

On Thu, Dec 03, 2015 at 02:26:16PM -0500, Tejun Heo wrote:
> Task or work item involved in memory reclaim trying to flush a
> non-WQ_MEM_RECLAIM workqueue or one of its work items can lead to
> deadlock.  Trigger WARN_ONCE() if such conditions are detected.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Peter Zijlstra <peterz@...radead.org>

Applied to wq/for-4.5.

-- 
tejun
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