On Thu, Jun 06, 2024 at 02:32:44PM +0800, Miaohe Lin wrote:
> +++ b/mm/internal.h
> @@ -1077,6 +1077,16 @@ extern u64 hwpoison_filter_flags_mask;
> extern u64 hwpoison_filter_flags_value;
> extern u64 hwpoison_filter_memcg;
> extern u32 hwpoison_filter_enable;
> +#define MAGIC_HWPOISON 0x48575053U /* HWPS */
> +extern void SetPageHWPoisonTakenOff(struct page *page);
> +extern void ClearPageHWPoisonTakenOff(struct page *page);
> +extern bool take_page_off_buddy(struct page *page);
> +extern bool put_page_back_buddy(struct page *page);
s/extern// for function declarations.