linux-kernel - Re: [PATCH 6/6] random: improve variable naming, clear extract buffer

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Message-ID: <20071209050831.GS19691@waste.org>
Date:	Sat, 8 Dec 2007 23:08:31 -0600
From:	Matt Mackall <mpm@...enic.com>
To:	tytso@....edu, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] random: improve variable naming, clear extract buffer

On Sat, Dec 08, 2007 at 08:51:54PM -0500, Theodore Tso wrote:
> On Sat, Dec 08, 2007 at 05:21:00PM -0600, Matt Mackall wrote:
> > random: improve variable naming, clear extract buffer
> > 
> > - split the SHA variables apart into hash and workspace
> > - rename data to extract
> > - wipe extract and workspace after hashing
> > 
> > diff -r 924f9a441236 drivers/char/random.c
> > --- a/drivers/char/random.c	Sat Dec 08 16:22:29 2007 -0600
> > +++ b/drivers/char/random.c	Sat Dec 08 16:32:31 2007 -0600
> > @@ -461,7 +461,7 @@ static void __add_entropy_words(struct e
> >  	unsigned long flags;
> >  	/* rotate the add pointer more rapidly to span more of the
> >  	 * pool on a given add */
> > -	const int step = 5;
> > +	const int step = 13;
> >  
> >  	/* Taps are constant, so we can load them without holding r->lock.  */
> >  	tap1 = r->poolinfo->tap1;
> 
> This change has nothing to do with the patch comment.  If you want to
> change the step size from 5 to 13, why not just change patch 5/6 to
> just use a step size of 13 from the beginning?

Patch refresh gone wrong.
 
> Otherwise, yeah, this patch does make sense.

Twice, in fact. This patch as sent won't compile due to an extra &.

-- 
Mathematics is the supreme nostalgia of our time.
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