BITS_IN_LONG
unsigned long offset = nr / BITS_IN_LONG;
unsigned long bit = nr & (BITS_IN_LONG-1);
unsigned long offset = nr / BITS_IN_LONG;
unsigned long bit = nr & (BITS_IN_LONG-1);
unsigned long offset = nr / BITS_IN_LONG;
unsigned long bit = nr & (BITS_IN_LONG-1);
unsigned long offset = nr / BITS_IN_LONG;
unsigned long bit = nr & (BITS_IN_LONG-1);
unsigned long offset = nr / BITS_IN_LONG;
unsigned long bit = nr & (BITS_IN_LONG-1);
#define LONGS(x) ((x + BITS_IN_LONG - 1) & -BITS_IN_LONG)