#ifndef _LINUX_PAGE_H #define _LINUX_PAGE_H #include struct page; #define virt_to_page(kaddr) ((struct page *) (kaddr)) #define page_address(kaddr) ((void *) (kaddr)) #define kmap_atomic(page) page_address(page) #define kunmap_atomic(addr) do {} while (0) static const char zero_page[PAGE_SIZE]; #define ZERO_PAGE(o) ((struct page *) &zero_page[0]) #endif /* _LINUX_PAGE_H */