Post #4114596

For TRIM/UNMAP, to efficiently free blocks back to the flash controller from the operating system for re-use to assist wear-levelling to prolong NAND flash longevity. Probed and found the capability on both but not tested or exercised yet. The baseline is LBPWS for UNMAP in the SCSI emulation which both support, although Linux's pure-ATA instrumentation command hdparm does not report it.