On Tue, Sep 22, 2020 at 03:56:44PM +0200, Oscar Salvador wrote: > When trying to soft-offline a free page, we need to first take it off the > buddy allocator. > Once we know is out of reach, we can safely flag it as poisoned. > > take_page_off_buddy will be used to take a page meant to be poisoned off > the buddy allocator. take_page_off_buddy calls break_down_buddy_pages, > which splits a higher-order page in case our page belongs to one. > > Once the page is under our control, we call page_handle_poison to set it > as poisoned and grab a refcount on it. > > Signed-off-by: Oscar Salvador <osalvador@xxxxxxx> Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
