linux-kernel - Re: [PATCH] m68knommu: change definitions of __pa() and _

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Date:	Mon, 11 Jan 2010 16:53:56 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Greg Ungerer <gerg@...pgear.com>
cc:	gerg@...inux.org, linux-m68k@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] m68knommu: change definitions of __pa() and __va()



On Tue, 12 Jan 2010, Greg Ungerer wrote:
> +#else
> +#define page_to_phys(page)	((page - mem_map) << PAGE_SHIFT)
> +#define page_to_bus(page)	((page - mem_map) << PAGE_SHIFT)
> +#endif

Ok, so the old ones were total crap too, but when moving things around, 
don't just copy the crap like this.

Look at those two #define's for five seconds, and ask yourself what is 
wrong with them. Those macros are not good.

			Linus
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