> Of course DMA only operates on byte ranges and not on files, but adding file system parsers to drives and disk controllers sounds like a way to introduce awfu

> Of course DMA only operates on byte ranges and not on files, but adding file system parsers to drives and disk controllers sounds like a way to introduce awful bugs and corruption. There's an interesting intermediate solution in the form of SSDs that provide a key-value interface instead of a linear block device. That gives the SSD more explicit knowledge about which chunks of data should be kept contiguous and can be expected to have the same lifetime.