On Tue, Mar 03, 2009 at 01:36:10PM -0800, Andrew Morton wrote:
> Alternatively, we could just not do the kmap_atomic() at all. i386
> won't be using this code and IIRC the only other highmem architecture
> is powerpc32, and ppc32 appears to also have its own DEBUG_PAGEALLOC
> implementation. So you could remove the kmap_atomic() stuff and put
>
> #ifdef CONFIG_HIGHMEM
> #error i goofed
> #endif
>
> in there.
I'll take the variant of this. Then poison_page() will be
static void poison_page(struct page *page)
{
void *addr;
if (PageHighmem(page))
return; // i goofed
page->poison = true;
addr = page_address(page);
memset(addr, PAGE_POISON, PAGE_SIZE);
}
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