Re: [PATCH v2 09/17] debugobjects: Make object hash locks nestable terminal locks

Petr Mladek
2018-11-22T15:33:08Z

On Mon 2018-11-19 13:55:18, Waiman Long wrote:
> By making the object hash locks nestable terminal locks, we can avoid
> a bunch of unnecessary lockdep validations as well as saving space
> in the lockdep tables.

Please, explain which terminal lock might be nested.

Hmm, it would hide eventual nesting of other terminal locks.
It might reduce lockdep reliability. I wonder if the space
optimization is worth it.

Finally, it might be good to add a short explanation what (nested)
terminal locks mean into each commit. It would help people to
understand the effect without digging into the lockdep code, ...

Best Regards,
Petr