linux-kernel - Re: [PATCH powerpc 2/2] kfree the cache name of pgtable cache if SLUB is used

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Message-ID: <4FF439D0.1000603@parallels.com>
Date:	Wed, 4 Jul 2012 16:40:48 +0400
From:	Glauber Costa <glommer@...allels.com>
To:	Li Zhong <zhong@...ux.vnet.ibm.com>
CC:	Christoph Lameter <cl@...ux.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Pekka Enberg <penberg@...nel.org>,
	Matt Mackall <mpm@...enic.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linux-mm <linux-mm@...ck.org>,
	PowerPC email list <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH powerpc 2/2] kfree the cache name  of pgtable cache if
 SLUB is used

On 07/04/2012 01:00 PM, Li Zhong wrote:
> On Tue, 2012-07-03 at 15:36 -0500, Christoph Lameter wrote:
>> > Looking through the emails it seems that there is an issue with alias
>> > strings. 
> To be more precise, there seems no big issue currently. I just wanted to
> make following usage of kmem_cache_create (SLUB) possible:
> 
> 	name = some string kmalloced
> 	kmem_cache_create(name, ...)
> 	kfree(name);

Out of curiosity: Why?
This is not (currently) possible with the other allocators (may change
with christoph's unification patches), so you would be making your code
slub-dependent.


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