2.6.26-rc2, "Little Exciting Here"

"About 45% architecture updates (counting the include files too), about 30% drivers, and about 25% odds-and-ends. The odds-and-ends are mainly Documentation, filesystems (mostly cifs) and core kernel (scheduler updates etc)," said Linux creator Linus Torvalds, announcing the 2.6.26-rc2 kernel. He added, "if you read the shortlog and get the feeling that most of it is pretty boring small details, you'd be right. There is little exciting there." He continued:

"A fairly small part of it, but quite possibly the most noticeable one, is how the semaphore changes impacted the BKL (the old 'big kernel lock' that is still used for some legacy code, for you non-core people out there), which in the past had different versions ('regular', 'preemptable'). A few months ago we dropped the regular BKL version, but in 2.6.25-rc1 we then had performance (and then correctness) issues with the interaction between the semaphore implementation and the preemptable BKL, so we're back to the old regular version for now."

read more

Origianl story: KernelTrap - Kernel news