54 extern void *kmap_high(struct page *page);
55 extern void kunmap_high(struct page *page);
57 static inline void *kmap(struct page *page)  in kmap()  argument
60 	if (!PageHighMem(page))  in kmap()
61 		return page_address(page);  in kmap()
62 	return kmap_high(page);  in kmap()
65 static inline void kunmap(struct page *page)  in kunmap()  argument
68 	if (!PageHighMem(page))  in kunmap()
70 	kunmap_high(page);  in kunmap()
73 extern void *kmap_atomic(struct page *page, enum km_type type);
75 extern struct page *kmap_atomic_to_page(void *vaddr);