linux-kernel - Re: [PATCH 9/9] mm: Remove ifdef condition in include/linux/mm.h

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Message-ID: <alpine.DEB.2.02.1402071304080.4212@chino.kir.corp.google.com>
Date:	Fri, 7 Feb 2014 13:04:47 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Rashika Kheria <rashika.kheria@...il.com>
cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	Michel Lespinasse <walken@...gle.com>, linux-mm@...ck.org,
	josh@...htriplett.org
Subject: Re: [PATCH 9/9] mm: Remove ifdef condition in include/linux/mm.h

On Fri, 7 Feb 2014, Rashika Kheria wrote:

> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 1cedd00..5f8348f 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1589,10 +1589,8 @@ static inline int __early_pfn_to_nid(unsigned long pfn)
>  #else
>  /* please see mm/page_alloc.c */
>  extern int __meminit early_pfn_to_nid(unsigned long pfn);
> -#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
>  /* there is a per-arch backend function. */
>  extern int __meminit __early_pfn_to_nid(unsigned long pfn);
> -#endif /* CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID */
>  #endif
>  
>  extern void set_dma_reserve(unsigned long new_dma_reserve);

Wouldn't it be better to just declare the __early_pfn_to_nid() in 
mm/page_alloc.c to be static?
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