nvme_dsm - Man Page
Send an nvme data set management command
int nvme_dsm (struct nvme_dsm_args *args );
struct nvme_dsm_args argument structure
The Dataset Management command is used by the host to indicate attributes for ranges of logical blocks. This includes attributes like frequency that data is read or written, access size, and other information that may be used to optimize performance and reliability, and may be used to deallocate/unmap/trim those logical blocks.
The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise.
February 2023 libnvme API manual