50 	struct page_ext *page_ext = lookup_page_ext(page);  in page_is_young()  local
52 	if (unlikely(!page_ext))  in page_is_young()
55 	return test_bit(PAGE_EXT_YOUNG, &page_ext->flags);  in page_is_young()
60 	struct page_ext *page_ext = lookup_page_ext(page);  in set_page_young()  local
62 	if (unlikely(!page_ext))  in set_page_young()
65 	set_bit(PAGE_EXT_YOUNG, &page_ext->flags);  in set_page_young()
70 	struct page_ext *page_ext = lookup_page_ext(page);  in test_and_clear_page_young()  local
72 	if (unlikely(!page_ext))  in test_and_clear_page_young()
75 	return test_and_clear_bit(PAGE_EXT_YOUNG, &page_ext->flags);  in test_and_clear_page_young()
80 	struct page_ext *page_ext = lookup_page_ext(page);  in page_is_idle()  local
82 	if (unlikely(!page_ext))  in page_is_idle()
85 	return test_bit(PAGE_EXT_IDLE, &page_ext->flags);  in page_is_idle()
90 	struct page_ext *page_ext = lookup_page_ext(page);  in set_page_idle()  local
92 	if (unlikely(!page_ext))  in set_page_idle()
95 	set_bit(PAGE_EXT_IDLE, &page_ext->flags);  in set_page_idle()
100 	struct page_ext *page_ext = lookup_page_ext(page);  in clear_page_idle()  local
102 	if (unlikely(!page_ext))  in clear_page_idle()
105 	clear_bit(PAGE_EXT_IDLE, &page_ext->flags);  in clear_page_idle()