linux-kernel - Re: SLUB: Return ZERO_SIZE

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Date:	Wed, 06 Jun 2007 23:58:33 +0200
From:	Rene Herman <rene.herman@...il.com>
To:	Pavel Machek <pavel@....cz>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>,
	"John Anthony Kazos Jr." <jakj@...-k-j.com>,
	Christoph Lameter <clameter@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: SLUB: Return ZERO_SIZE_PTR for kmalloc(0)

On 06/06/2007 11:26 PM, Pavel Machek wrote:

>> Yes, it's internal but given that this is open-source 
>> which, optimistically, is read many more times than it's 
>> written one should still strive for code that reads nice 
>> as far as I'm concerned. It's obviously also not hugely 
>> important but it's just that ZERO_SIZE_PTR makes my neck 
>> hair stand up.
> 
> PTR_TO_NOTHING? 
> PTR_TO_0BYTES?
> PTR_TO_0SIZE?
> PTR_TO_ZERO_SIZE?
> NOT_QUITE_NULL? :-)

Particularly like that one. Wouldn't object to that at all. Hey, they tell 
us it's just some inconsequential internal thingy anyway... :-)

> FULL? 

Almost as nice. DULL? BULL?

NOTHING?
EMPTY? <-- nice one as far as I'm concerned.

Rene.
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