13 void *kmap(struct page *page)  in kmap()  argument
18 	if (!PageHighMem(page))  in kmap()
19 		return page_address(page);  in kmap()
20 	addr = kmap_high(page);  in kmap()
27 void kunmap(struct page *page)  in kunmap()  argument
30 	if (!PageHighMem(page))  in kunmap()
32 	kunmap_high(page);  in kunmap()
45 void *kmap_atomic(struct page *page)  in kmap_atomic()  argument
52 	if (!PageHighMem(page))  in kmap_atomic()
53 		return page_address(page);  in kmap_atomic()
61 	set_pte(kmap_pte-idx, mk_pte(page, PAGE_KERNEL));  in kmap_atomic()
118 struct page *kmap_atomic_to_page(void *ptr)  in kmap_atomic_to_page()