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From: "Manfred Spraul" <manfred@colorfullife.com>
To: "Pavel Machek" <pavel@suse.cz>
Cc: "Robert Love" <rml@tech9.net>, "Roger Larsson" <roger.larsson@norran.net>,
        <linux-kernel@vger.kernel.org>, <nigel@nrg.org>
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Subject: Re: [SMP lock BUG?] Re: Feedback on preemptible kernel patch
Date: Tue, 18 Sep 2001 00:40:51 +0200
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>
> is it legal to kmap_atomic(a,b); kmap_atomic(c,d); kunmap_atomic(a,b);
?
>
Yes, that's legal - just think about one kmap_atomic from process
context, and another one in irq context.

> If so, your patch may need some ounting....
> Pavel

I hope ctx_sw_off does internal counting, correct?

--
    Manfred