linux-kernel - Re: [PATCH] Fix kunmap() argument in sg_miter

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Message-ID: <20081117083022.GE26778@kernel.dk>
Date:	Mon, 17 Nov 2008 09:30:23 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Tejun Heo <htejun@...il.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Hugh Dickins <hugh@...itas.com>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH] Fix kunmap() argument in sg_miter_stop

On Mon, Nov 17 2008, Ingo Molnar wrote:
> 
> * Jens Axboe <jens.axboe@...cle.com> wrote:
> 
> > +#define kunmap(p)			\
> > +	do {				\
> > +		struct page *__p;	\
> > +		(void) (&__p == &(p));	\
> > +		__kunmap(p);		\
> > +	} while (0)
> > +
> > +#define kunmap_atomic(a, t)		\
> > +	do {				\
> > +		void *__p;		\
> > +		(void) (&__p == &(a));	\
> > +		__kunmap_atomic(a, t);	\
> > +	} while (0)
> 
> Agreed - but please use the typecheck() primitive. (linux/typecheck.h)

Neat, didn't know about that, thanks.

-- 
Jens Axboe

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