DOKK / manpages / debian 12 / libnvme-dev / nvme_set_features_write_atomic.2.en
nvme_set_features_write_atomic(2) libnvme API manual nvme_set_features_write_atomic(2)

nvme_set_features_write_atomic - Set write atomic feature

int nvme_set_features_write_atomic (int fd , bool dn , bool save , __u32 *result );

File descriptor of nvme device
Disable Normal
Save value across power states
The command completion result from CQE dword0

The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise.

nvme_set_features_write_atomic January 2023