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

From: Pekka Enberg
Date: Thu Feb 19 2009 - 04:13:57 EST


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.

On Thu, 2009-02-19 at 10:22 +0900, KOSAKI Motohiro wrote:
> I don't think so. It's debetable thing.
>
> poisonig is transparent feature from caller.
> but the caller of kzfree() know to fill memory and it should know.

Debatable, sure, but doesn't seem like a big enough reason to make
kzfree() differ from kfree().

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