[$] FUSE and io_uring

Bernd Schubert led a session at the 2023 Linux Storage, Filesystem,Memory-Management and BPF Summit on the intersectionof FUSEand io_uring. Heworks for DDN Storage, which is using FUSE for two network-storageproducts; he has found FUSE to be a bottleneck for those filesystems. Thatcould perhaps be improved by using io_uring, which is something he has been working on andwanted to discuss.