linux-kernel - Re: [patch 1/7] slab: introduce kzfree()

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Message-Id: <1234954488.24030.46.camel@penberg-laptop>
Date:	Wed, 18 Feb 2009 12:54:48 +0200
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	David Vrabel <david.vrabel@....com>
Cc:	Johannes Weiner <hannes@...xchg.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chas Williams <chas@....nrl.navy.mil>,
	Evgeniy Polyakov <johnpol@....mipt.ru>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Matt Mackall <mpm@...enic.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>
Subject: Re: [patch 1/7] slab: introduce kzfree()

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.

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