The question remains. Handwaving about how flash is different than disks isn't an answer to how shrinkage is conveyed to the filesystem (and isn't a meaningful

The question remains. Handwaving about how flash is different than disks isn't an answer to how shrinkage is conveyed to the filesystem (and isn't a meaningful differentiator anyway, since common spinny-disks haven't been 1:1 mappings for well over 3 decades, themselves).