Re: [PATCH 4/4] mm: shrinker: make shrinker not depend on memcg kmem

From: Kirill A. Shutemov
Date: Tue Jun 11 2019 - 22:57:33 EST

On Fri, Jun 07, 2019 at 02:07:39PM +0800, Yang Shi wrote:
> Currently shrinker is just allocated and can work when memcg kmem is
> enabled. But, THP deferred split shrinker is not slab shrinker, it
> doesn't make too much sense to have such shrinker depend on memcg kmem.
> It should be able to reclaim THP even though memcg kmem is disabled.
> Introduce a new shrinker flag, SHRINKER_NONSLAB, for non-slab shrinker,
> i.e. THP deferred split shrinker. When memcg kmem is disabled, just
> such shrinkers can be called in shrinking memcg slab.

Looks like it breaks bisectability. It has to be done before makeing
shrinker memcg-aware, hasn't it?

Kirill A. Shutemov