Among the new features are OCFS2, a clustering filesystem contributed by Oracle and the moving of the physical location of pages between nodes in NUMA systems.
There is also IPv6 support for DCCP, the introduction of the Transparent Inter Process Communication protocol, ACL support for CIFS filesystem, HFSX filesystem support, new configfs filesystem and support for more devices. Torvalds said that he has also fixed a few bugs and there are some MIPS and PowerPC updates.
You can read Torvald's bog here. µ
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