Summary: 2.6.27 add a new
filesystem (UBIFS) optimized for "pure" flash-based storage devices,
the page-cache is now lockless, much improved Direct I/O scalability
and performance, delayed allocation for ext4, multiqueue networking, an
alternative hibernation implementation based on kexec/kdump, data
integrity support in the block layer for devices that support it, a
simple tracer called ftrace, a mmio tracer, sysprof support, extraction
of all the in-kernel’s firmware to /lib/firmware, XEN support for
saving/restorig VMs, improved video camera support, support for the
Intel wireless 5000 series and RTL8187B network cards, a new ath9k
driver for the Atheros AR5008 and AR9001 family of chipsets, more new
drivers, improved support for others and many other improvements and
fixes.