linux-kernel - Re: [patch 34/54] Fix roundup_pow_of

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Date:	Fri, 8 Jun 2007 04:19:44 -0400
From:	Theodore Tso <tytso@....edu>
To:	Chris Wright <chrisw@...s-sol.org>
Cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Domenico Andreoli <cavokz@...il.com>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Rolf Eike Beer <eike-kernel@...tec.de>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [patch 34/54] Fix roundup_pow_of_two(1)

On Fri, Jun 08, 2007 at 12:22:01AM -0700, Chris Wright wrote:
> -stable review patch.  If anyone has any objections, please let us know.
> ---------------------
> 
> From: Rolf Eike Beer <eike-kernel@...tec.de>
> 
> Fix roundup_pow_of_two(1)
> 
> 1 is a power of two, therefore roundup_pow_of_two(1) should return 1. It does
> in case the argument is a variable but in case it's a constant it behaves
> wrong and returns 0. Probably nobody ever did it so this was never noticed.

If this doesn't fix a user-visiable bug, should we be including it in
the stable patch series?  (Assuming that it doesn't, I wouldn't, but I
tend to be more conservative about what I would include in a stable
production release.)

Regards,

						- Ted
-
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