10 Apr
2018
10 Apr
'18
5:38 p.m.
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.