There is an interesting article at LWN about the shared subtrees work that is being merged into 2.6.15.
Related Posts
pv: a handy replacement for cat when piping large amounts of data into commands
First experiences with Dell XPS 12 9Q33
HPC sysadmin job in Melbourne, Australia
August 1993 “Preliminary Hardware Configuration for a Main Service Linux Machine”
Want to help with the Linux kernel?
Emerging Linux Filesystems talk – LUV October meeting – 2nd October 2007