get_zeroed_page
buf = (char *)get_zeroed_page(GFP_KERNEL);
buf = (char *)get_zeroed_page(GFP_KERNEL);
mr->pages = (__be64 *)get_zeroed_page(GFP_KERNEL);
pas = (__be64 *)get_zeroed_page(GFP_ATOMIC);
array->page_list[p].page = (void **) get_zeroed_page(GFP_ATOMIC);
inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL);