More 2.6 history

2.6.9 (October 18, 2004)
Block I/O barrier support
Limited unprivileged memory locking
Token-based thrashing control
User-space memory layout change
waitid() system call
Kprobes
kobject change (uses krefs)
USB "On The Go" support
Philips webcam driver yanked, restored
Cluster-wide file locking infrastructure
Out-of-line spinlocks
Network driver locking changes (API change)
A new I/O memory access mechanism (API change)
Software suspend implementations merged