Re: [PATCH] mm: don't show nr_indirectly_reclaimable in /proc/vmstat

From: Roman Gushchin
Date: Wed Apr 25 2018 - 17:03:01 EST

On Wed, Apr 25, 2018 at 12:37:26PM -0700, David Rientjes wrote:
> On Wed, 25 Apr 2018, Roman Gushchin wrote:
> > Don't show nr_indirectly_reclaimable in /proc/vmstat,
> > because there is no need in exporting this vm counter
> > to the userspace, and some changes are expected
> > in reclaimable object accounting, which can alter
> > this counter.
> >
> I don't think it should be a per-node vmstat, in this case. It appears
> only to be used for the global context. Shouldn't this be handled like
> totalram_pages, total_swap_pages, totalreserve_pages, etc?

Hi, David!

I don't see any reasons why re-using existing infrastructure for
fast vm counters is bad, and why should we re-invent it for this case.