linux-kernel - Re: [PATCH 01/15] avr32: convert to asm-generic/memory

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Date:	Fri, 25 Sep 2015 17:36:36 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Linux MM <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-nvdimm <linux-nvdimm@...1.01.org>,
	Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

On Thu, Sep 24, 2015 at 8:10 AM, Christoph Hellwig <hch@...radead.org> wrote:
> On Wed, Sep 23, 2015 at 12:41:18AM -0400, Dan Williams wrote:
>> Switch avr32/include/asm/page.h to use the common defintions for
>> pfn_to_page(), page_to_pfn(), and ARCH_PFN_OFFSET.
>
> This was the last architecture not using asm-generic/memory_model.h,
> so it might be time to move it to linux/ or even fold it into an
> existing header.

I went to go attempt this, but ia64 is still a holdout, as its
DISCONTIGMEM setup can't use the generic memory_model definitions.

#ifdef CONFIG_DISCONTIGMEM
# define page_to_pfn(page)      ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn)       (vmem_map + (pfn))
#else
# include <asm-generic/memory_model.h>
#endif
#else
# include <asm-generic/memory_model.h>
#endif
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