Linux Kernel 3.9 Tracking

Linux 3.9 has now been released. For details, read "What's new in Linux 3.9".

Previous coverage of the development of Linux 3.9 is listed below:

• Feature set of Linux 3.9 has been established
  RAID 5 and 6 in Btrfs and a Device Mapper target for using SSDs as hard disk cache will be two of the major new features of Linux 3.9. New Stable and Longterm kernels offer bug fixes, and kernel.org has been given a facelift.

• Kernel Log - Coming in 3.9 (Part 1): Filesystems & storage
  The Linux kernel can now be set up to use SSDs as cache for hard drives; Btrfs has native RAID 5 and 6 support. The kernel development team has also resolved two performance problems caused by previous changes.

• Kernel Log: Coming in 3.9 (Part 2) - Infrastructure
  From now on the help text for shown during configuration will indicate if a kernel feature is experimental. Linux now has the ability to "suspend freeze" and can throttle Intel CPUs with power napping. The KVM hypervisor now supports ARM cores.
  

• Kernel Log: Coming in 3.9 (Part 3) - Drivers and networking
  Linux 3.9 includes drivers for new AMD graphics chips and for Intel Wi-Fi chips that are expected to become available this summer. Changes to the network subsystem will enable the kernel to be more efficient when distributing network traffic across multiple processor cores.
  

Information about previous Linux kernel releases can be found in The H's Linux Kernel History.