> Are there important innovations in Linux and its APIs from the last 12 years that would be interesting to learn, and how ? From a kernel API/ABI point of vie

> Are there important innovations in Linux and its APIs from the last 12 years that would be interesting to learn, and how ? From a kernel API/ABI point of view (which is the focus of "The Linux Programming Interface"), the most important one would probably be io_uring (https://kernel.dk/io_uring.pdf https://kernel.dk/io_uring.pdf).