linux-kernel - Re: [PATCH] mm/nommu.c:Dynamic alloc/free percpu area for nommu

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Message-ID: <28495.1269258639@redhat.com>
Date:	Mon, 22 Mar 2010 11:50:39 +0000
From:	David Howells <dhowells@...hat.com>
To:	graff.yang@...il.com
Cc:	dhowells@...hat.com, tj@...nel.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, uclinux-dist-devel@...ckfin.uclinux.org
Subject: Re: [PATCH] mm/nommu.c:Dynamic alloc/free percpu area for nommu

<graff.yang@...il.com> wrote:

> -	return virt_to_page(addr);
> +	return (struct page *)
> +			(virt_to_page(addr)->index) ? : virt_to_page(addr);

Can the extra conditional operator be made subject to CONFIG_SMP?

> -	return page_to_pfn(virt_to_page(addr));
> +	return page_to_pfn((struct page *)
> +			(virt_to_page(addr)->index) ? : virt_to_page(addr));

Ditto.

> +#ifdef CONFIG_SMP
> ...
> +#endif

Can this be put into a separate file?  There's rather a lot in mm/nommu.c
these days.

David
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