Re: [PATCH v2 08/17] locking/lockdep: Add support for nestable terminal locks

[Peter Zijlstra]

On Mon, Nov 19, 2018 at 01:55:17PM -0500, Waiman Long wrote:
> There are use cases where we want to allow nesting of one terminal lock
> underneath another terminal-like lock. That new lock type is called
> nestable terminal lock which can optionally allow the acquisition of
> no more than one regular (non-nestable) terminal lock underneath it.

I think I asked for a more coherent changelog on this. The above is
still self contradictory and doesn't explain why you'd ever want such a
'misfeature' :-)