On Tue, Apr 10, 2018 at 12:30:23PM -0500, Christopher Lameter wrote:
> On Tue, 10 Apr 2018, Matthew Wilcox wrote:
> > If we want to get rid of the concept of constructors, it's doable,
> > but somebody needs to do the work to show what the effects will be.
> How do you envision dealing with the SLAB_TYPESAFE_BY_RCU slab caches?
> Those must have a defined state of the objects at all times and a constructor 
> is
> required for that. And their use of RCU is required for numerous lockless
> lookup algorithms in the kernhel.

Not at all times.  Only once they've been used.  Re-constructing them
once they've been used might break the rcu typesafety, I suppose ...
would need to examine the callers.

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