taglinefilesource code
MAP_NR34include/asm-alpha/page.h#define MAP_NR(addr) ((((unsigned long) (addr)) - PAGE_OFFSET) >> PAGE_SHIFT)
MAP_NR18include/asm-i386/page.h#define MAP_NR(addr) ((addr) >> PAGE_SHIFT)
MAP_NR118include/asm-mips/page.h#define MAP_NR(addr)  (((addr) - PAGE_OFFSET) >> PAGE_SHIFT)
MAP_NR26include/asm-sparc/page.h#define MAP_NR(addr) (((addr)) >> PAGE_SHIFT)