Linux 5.1 released
Summary: This release includes io_uring, an high-performance interface for asynchronous I/O; it also adds improvements in fanotify to provide a scalable way of watching changes on large file systems; it adds a method to allow safe delivery of signals in presence of PID reuse; persistent memory can be used now as hot-plugabble RAM; Zstd compression levels have been made configurable in Btrfs; it also adds a new cpuidle governor that makes better power management decisions than the menu governor; all 32 bit architectures have added the necessary syscalls to deal with the y2038 problem; it is possible now to boot to a device-mapper device without initramfs; and live patching has added support for creating cumulative patches. As always, there are many other new drivers and improvements.