> threads and processes waiting on some resource should be able to update some piece if metadata pointing to the thing they are waiting for This will allow "do

> threads and processes waiting on some resource should be able to update some piece if metadata pointing to the thing they are waiting for This will allow "donating" their priority and cpu share to the other process/thread. That's what, for example, futexes are for. But the "donating" part can be expensive, so short spins can actually be beneficial for overall system efficiency.