linux-kernel - Re: [PATCH]: exec: avoid propagating PF_NO

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Message-ID: <20131128144359.GL3694@twins.programming.kicks-ass.net>
Date:	Thu, 28 Nov 2013 15:43:59 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Tejun Heo <htejun@...il.com>
Cc:	Oleg Nesterov <oleg@...hat.com>, zhang.yi20@....com.cn,
	lkml <linux-kernel@...r.kernel.org>,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH]: exec: avoid propagating PF_NO_SETAFFINITY into
 userspace child

On Thu, Nov 28, 2013 at 03:31:45PM +0100, Peter Zijlstra wrote:
> Sure, we absolutely must set it for per-cpu workqueues (and their
> workers) otherwise we cannot guarantee correctness. Same for per-node if
> we have that.

On that, the per-node thing is debatable. There's no correctness issues
with per-node stuff as we have with per-cpu storage.

And if there's no correctness implications we should not force things.
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