[PATCH v2 2/3] mutex: add support for reservation style locks, v2

[Peter Zijlstra]

On Tue, 2013-04-09 at 18:42 -0400, Steven Rostedt wrote:
> What about setting an age as soon as it starts the process
> of grabbing one of these locks? And it keeps the age until it
> successfully grabs and releases all the locks again. It wont reset if
> it
> had to drop the locks and start over.


That is indeed the proposed mechanism. It ensures FIFO fairness between
the various threads that try to acquire a set.