38 	unsigned long guess, oldval;  in change_bit()  local
40 	oldval = *addr;  in change_bit()
42 		guess = oldval;  in change_bit()
43 		oldval = cmpxchg(addr, guess, guess ^ mask);  in change_bit()
44 	} while (guess != oldval);  in change_bit()
83 	unsigned long guess, oldval;  in test_and_change_bit()  local
85 	oldval = *addr;  in test_and_change_bit()
87 		guess = oldval;  in test_and_change_bit()
88 		oldval = cmpxchg(addr, guess, guess ^ mask);  in test_and_change_bit()
89 	} while (guess != oldval);  in test_and_change_bit()
90 	return (oldval & mask) != 0;  in test_and_change_bit()