+% TODO trattare la poll API basata sull'I/O asicrono, introdotta con il kernel
+% 4.18, vedi https://lwn.net/Articles/743714/,
+% https://lwn.net/Articles/742978/, https://lwn.net/Articles/758324/
+% http://git.infradead.org/users/hch/vfs.git/commit/d2d9e26c7cb6d95d521153897910080cf56c7fad
+% Reverted
+
+% TODO trattare la nuova API per l'I/O asincrono (io_uring), introdotta con il
+% kernel 5.1, vedi https://lwn.net/Articles/776703/,
+% https://lwn.net/ml/linux-fsdevel/20190112213011.1439-1-axboe@kernel.dk/
+% altre feature correlate:
+% dal 5.11: support for the shutdown(), renameat2(), and unlinkat()