53 extern void *kmap_high(struct page *page);
54 extern void kunmap_high(struct page *page);
55 extern void *kmap_atomic_prot(struct page *page, pgprot_t prot);
58 static inline void *kmap(struct page *page)  in kmap()  argument
61 	if (!PageHighMem(page))  in kmap()
62 		return page_address(page);  in kmap()
63 	return kmap_high(page);  in kmap()
66 static inline void kunmap(struct page *page)  in kunmap()  argument
69 	if (!PageHighMem(page))  in kunmap()
71 	kunmap_high(page);  in kunmap()
74 static inline void *kmap_atomic(struct page *page)  in kmap_atomic()  argument
76 	return kmap_atomic_prot(page, kmap_prot);  in kmap_atomic()
79 static inline struct page *kmap_atomic_to_page(void *ptr)  in kmap_atomic_to_page()