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Date: Wed, 10 Jul 2002 21:46:30 +0200 (CEST)
From: Ingo Molnar <mingo@elte.hu>
Reply-To: Ingo Molnar <mingo@elte.hu>
To: oleg@tv-sign.ru
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch] sched-2.5.24-D3, batch/idle priority scheduling,
 SCHED_BATCH
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> > And users of __KERNEL_SYSCALLS__ and kernel_thread() should not
> > have policy == SCHED_BATCH.
> 
> yep. And even if they do they should be aware of the consequences.

well, there's one security consequence here - module loading
(request_module()), which spawns a kernel thread must not run as
SCHED_BATCH. I think the right solution for that path is to set the policy
to SCHED_OTHER upon entry, and restore it to the previous one afterwards -
this way the helper thread has SCHED_OTHER priority.

	Ingo

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