53  * __test_and_set_bit - Set a bit and return its old value
65 	unsigned long old = *p;  in __test_and_set_bit()  local
67 	*p = old | mask;  in __test_and_set_bit()
68 	return (old & mask) != 0;  in __test_and_set_bit()
72  * __test_and_clear_bit - Clear a bit and return its old value
84 	unsigned long old = *p;  in __test_and_clear_bit()  local
86 	*p = old & ~mask;  in __test_and_clear_bit()
87 	return (old & mask) != 0;  in __test_and_clear_bit()
96 	unsigned long old = *p;  in __test_and_change_bit()  local
98 	*p = old ^ mask;  in __test_and_change_bit()
99 	return (old & mask) != 0;  in __test_and_change_bit()