Re: [PATCH 0/3 RESEND] Per memcg lru_gen node stat

[T.J. Mercier]

On Wed, Oct 18, 2023 at 7:32 PM Huan Yang <link@xxxxxxxx> wrote:
> > Android can't use debugfs in production, but I
> > think we'd prefer to use memory.reclaim for eviction anyway because it
> > respects memcg limits and reclaims from slab.
> Yes, shrink control this actually can use proactive reclaim.
> >
> > So maybe it's possible to add just aging functionality specific to
> > MGLRU? It'd be nice to know how you're going to use the aging, or why
> Due to debugfs not always mount, if we want to now lrugen's info, maybe
> nice to offer a memcg's node to show per memcg's lrugen info.
> > you want this version of eviction instead of what memory.reclaim does.
>
I think Yu's inquiry was about whether you will look at the lrugen
info from the memcg file for a production use case, or just for
debugging where you don't have debugfs for some reason. Because it's a
long term commitment to add the file.