46 extern unsigned long kmap_high(struct page *page);
47 extern void kunmap_high(struct page *page);
49 static inline unsigned long kmap(struct page *page)  in kmap()  argument
53 	if (page < highmem_start_page)  in kmap()
54 		return page_address(page);  in kmap()
55 	return kmap_high(page);  in kmap()
58 static inline void kunmap(struct page *page)  in kunmap()  argument
62 	if (page < highmem_start_page)  in kunmap()
64 	kunmap_high(page);  in kunmap()
73 static inline void *kmap_atomic(struct page *page)  in kmap_atomic()  argument
79 	if (page < highmem_start_page)  in kmap_atomic()
80 		return page_address(page);  in kmap_atomic()
89 	set_pte(kmap_pte - idx, mk_pte(page, kmap_prot));  in kmap_atomic()