Re: [PATCH v2, part2 08/10] mm/SPARC: use free_highmem_page() tofree highmem pages into buddy system

[Andrew Morton]

On Sun, 10 Mar 2013 16:01:08 +0800 Jiang Liu <liuj97@xxxxxxxxx> wrote:

> Use helper function free_highmem_page() to free highmem pages into
> the buddy system.
> 
> ...
>
> --- a/arch/sparc/mm/init_32.c
> +++ b/arch/sparc/mm/init_32.c
> @@ -282,14 +282,8 @@ static void map_high_region(unsigned long start_pfn, unsigned long end_pfn)
>  	printk("mapping high region %08lx - %08lx\n", start_pfn, end_pfn);
>  #endif
>  
> -	for (tmp = start_pfn; tmp < end_pfn; tmp++) {
> -		struct page *page = pfn_to_page(tmp);
> -
> -		ClearPageReserved(page);
> -		init_page_count(page);
> -		__free_page(page);
> -		totalhigh_pages++;
> -	}
> +	for (tmp = start_pfn; tmp < end_pfn; tmp++)
> +		free_higmem_page(pfn_to_page(tmp));
>  }

This code isn't inside #ifdef CONFIG_HIGHMEM, but afaict that's OK
because CONFIG_HIGHMEM=n isn't possible on sparc32.

This patch and one other mistyped "free_highmem_page".  I got lazy and
edited those patches in-place.

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