linux-kernel - Re: [take16 1/4] kevent: Core files.

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Message-ID: <Pine.LNX.4.64.0609060850150.18512@turbotaz.ourhouse>
Date:	Wed, 6 Sep 2006 08:54:22 -0500 (CDT)
From:	Chase Venters <chase.venters@...entec.com>
To:	Chase Venters <chase.venters@...entec.com>
cc:	Evgeniy Polyakov <johnpol@....mipt.ru>,
	lkml <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Ulrich Drepper <drepper@...hat.com>,
	Andrew Morton <akpm@...l.org>, netdev <netdev@...r.kernel.org>,
	Zach Brown <zach.brown@...cle.com>,
	Christoph Hellwig <hch@...radead.org>,
	Johann Borck <johann.borck@...sedata.com>
Subject: Re: [take16 1/4] kevent: Core files.

On Wed, 6 Sep 2006, Chase Venters wrote:

>>  +	if (start + num >= KEVENT_MAX_EVENTS ||
>>  +			start >= KEVENT_MAX_EVENTS ||
>>  +			num >= KEVENT_MAX_EVENTS)
>
> Since start and num are unsigned, the last two checks are redundant. If start 
> or num is individually >= KEVENT_MAX_EVENTS, start + num must be.
>

Actually, my early-morning brain code optimizer is apparently broken, 
because it forgot all about integer wraparound. Disregard please.

>
> Thanks,
> Chase
>
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