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Subject: Re: [patch 1/7] slab: introduce kzfree()
From: Pekka Enberg <penberg@cs.helsinki.fi>
To: David Vrabel <david.vrabel@csr.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Chas Williams <chas@cmf.nrl.navy.mil>,
       Evgeniy Polyakov <johnpol@2ka.mipt.ru>, linux-mm@kvack.org,
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       Christoph Lameter <cl@linux-foundation.org>,
       Nick Piggin <npiggin@suse.de>
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Date: Wed, 18 Feb 2009 12:54:48 +0200
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On Wed, 2009-02-18 at 10:50 +0000, David Vrabel wrote:
> Johannes Weiner wrote:
> > +void kzfree(const void *p)
> 
> Shouldn't this be void * since it writes to the memory?

No. kfree() writes to the memory as well to update freelists, poisoning
and such so kzfree() is not at all different from it.