xor_unlock_is_negative_byte
return xor_unlock_is_negative_byte(mask, folio_flags(folio, 0));
KCSAN_EXPECT_READ_BARRIER(xor_unlock_is_negative_byte(1, &test_var), true);
KCSAN_EXPECT_WRITE_BARRIER(xor_unlock_is_negative_byte(1, &test_var), true);
KCSAN_EXPECT_RW_BARRIER(xor_unlock_is_negative_byte(1, &test_var), true);
KCSAN_CHECK_RW_BARRIER(xor_unlock_is_negative_byte(1, &test_var));
KCSAN_CHECK_READ_BARRIER(xor_unlock_is_negative_byte(1, &test_var));
KCSAN_CHECK_WRITE_BARRIER(xor_unlock_is_negative_byte(1, &test_var));
xor_unlock_is_negative_byte(1 << nr, addr));