NVME_NSHEAD_DISK_LIVE
if (!test_bit(NVME_NSHEAD_DISK_LIVE, &head->flags))
if (test_and_clear_bit(NVME_NSHEAD_DISK_LIVE, &head->flags)) {
if (!test_and_set_bit(NVME_NSHEAD_DISK_LIVE, &head->flags)) {
clear_bit(NVME_NSHEAD_DISK_LIVE, &head->flags);
if (test_bit(NVME_NSHEAD_DISK_LIVE, &ns->head->flags))