[$] Famfs, FUSE, and BPF

The famfs filesystem first showed up on themailing lists in early 2024; since then, it has been the topic ofregular discussions at the Linux Storage, Filesystem, Memory Management andBPF (LSFMM+BPF) Summit. It has also, as result of those discussions, beenthrough some significant changes since that initial posting. So it is notsurprising that a suggestion that it needed to be rewritten yet again wasnot entirely well received. How much more rewriting will actually beneeded is unclear, but more discussion appears certain.