On Tue, Mar 12, 2013 at 02:42:15PM -0700, Andrew Morton wrote:
> On Sun, 10 Mar 2013 16:01:08 +0800 Jiang Liu <liu...@gmail.com> 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.
Correct - from arch/sparc/Kconfig

config HIGHMEM
        bool
        default y if SPARC32


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

You can add my:
Acked-by: Sam Ravnborg <s...@ravnborg.org>

        Sam
 
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