Re: [PATCH] Use const* parameters in mm.h

[Andrew Morton]

"J.A. Magallon" <jamagallon@xxxxxxx> wrote:
>
> As they are inline, this gives the compiler wide space for optmizations.
> 
> --- linux-2.6.15-rc5-mm2.orig/include/linux/mm.h	2005-12-12 09:10:34.000000000 -0800
> +++ linux-2.6.15-rc5-mm2/include/linux/mm.h	2005-12-14 14:39:50.000000000 -0800
> @@ -464,7 +464,7 @@ void put_page(struct page *page);
>  #define SECTIONS_MASK		((1UL << SECTIONS_WIDTH) - 1)
>  #define ZONETABLE_MASK		((1UL << ZONETABLE_SHIFT) - 1)
>  
> -static inline unsigned long page_zonenum(struct page *page)
> +static inline unsigned long page_zonenum(const struct page *page)
> ...

This makes zero difference in x86 allnoconfig code size with both gcc-3.2.1
and gcc-4.1.
-
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