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Date: Wed, 8 Aug 2007 12:17:00 +0200
From: Andi Kleen <andi@...stfloor.org>
To: Lee Revell <rlrevell@...-job.com>
Cc: Andi Kleen <andi@...stfloor.org>, dragoran <drago01@...il.com>,
linux-kernel@...r.kernel.org
Subject: Re: allow non root users to set io priority "idle" ?
> I don't think it's a problem for high priority (RT) tasks - it's well
> known in the real time Linux community that you never, ever do IO from
> a thread that has to satisfy RT constraints.
The point here is to protect the system from a potentially malicious user
> which I would
> expect to take fewer locks.
Even a single lock is one too much. My example lock -- the page lock bit --
certainly applies to both reads and writes.
-Andi
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