The 5.1 kernel has been released

Linus has released the 5.1 kernel, right on schedule. Some of the significant changes in the release include BPF spinlocks, more year-2038 preparation, the TEO CPU-idle governor, The io_uring fast asynchronous I/O mechanism, initial support for pidfds (file descriptors that refer to a process), the SafeSetID security module, and much more. See the KernelNewbies 5.1 page for lots of details.

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