#define __page_to_pfn(pg) \
({ struct page *__pg = (pg); \
int __sec = page_to_section(__pg); \
- __pg - __section_mem_map_addr(__nr_to_section(__sec)); \
+ (unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec))); \
})
#define __pfn_to_page(pfn) \