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Date: Thu, 19 Jan 2006 20:56:48 -0800
From: Andrew Morton <akpm@osdl.org>
To: David Woodhouse <dwmw2@infradead.org>
Cc: davem@davemloft.net, torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH]: Fix regression added by ppoll/pselect code.
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David Woodhouse <dwmw2@infradead.org> wrote:
>
> His patch also changed the simple powers of ten to the slightly
>  confusing 'NSEC_PER_SEC' and 'USEC_PER_SEC' macros, as if those numbers
>  are subject to change by later decree, and shouldn't be hard-coded.

a) They tell you what the magic numbers _mean_.

b) Ever tried counting nine contiguous zeros at 4AM, making sure that
   they're all there?