Re: [PATCH 1/2] slab: __GFP_ZERO is incompatible with a constructor

[Christopher Lameter]

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.