what’s new in linux 3.1
Support for the OpenRISC opensource CPU and Near-Field Communication chips used to enable mobile payments and Wii Controller.
performance improvements to the writeback throttling and speedups in the slab allocator.
a new iSCSI implementation ,cpupowerutils userspace utility for power management and new drivers.
bad block management in the generic software RAID layer.
filesystem barriers enabled by default in Ext3.