NVME_AEN_BIT_DISC_CHANGE
if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_DISC_CHANGE))
nvmet_clear_aen_bit(req, NVME_AEN_BIT_DISC_CHANGE);
NVME_AEN_CFG_DISC_CHANGE = 1 << NVME_AEN_BIT_DISC_CHANGE,