Re: [RFC PATCH 9/9] debugfs: free debugfs_fsdata instances

[Johannes Berg]

On Tue, 2017-04-18 at 08:17 -0700, Paul E. McKenney wrote:

> > Again, no (S)RCU abuse here, just an ABBA deadlock.
> 
> OK, please accept my apologies for failing to follow the thread.

No worries - just wanted to clarify this in case I was missing
something.

> I nevertheless reiterate my advice to run at least some tests with
> CONFIG_PROVE_RCU=y.ÂÂAnd yes, it would be good to upgrade lockdep
> to find the above theoretical deadlock.

Right. It won't matter for debugfs after this patchset, but it would
indeed be nice - I failed in my attempt though :)

johannes