linux-kernel - Re: [PATCH 1/2] mm: multi-gen LRU: remove MM_LEAF_OLD and MM_NONLEAF

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Message-ID: <CAOUHufZnsT3SGgVGRm=9H=1yYSsotCJsy58rJ5JPsSW3-AHCJw@mail.gmail.com>
Date: Wed, 23 Oct 2024 21:27:23 -0600
From: Yu Zhao <yuzhao@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: James Houghton <jthoughton@...gle.com>, Sean Christopherson <seanjc@...gle.com>, 
	Paolo Bonzini <pbonzini@...hat.com>, David Matlack <dmatlack@...gle.com>, 
	David Rientjes <rientjes@...gle.com>, Oliver Upton <oliver.upton@...ux.dev>, 
	David Stevens <stevensd@...gle.com>, Wei Xu <weixugc@...gle.com>, 
	Axel Rasmussen <axelrasmussen@...gle.com>, kvm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 1/2] mm: multi-gen LRU: remove MM_LEAF_OLD and
 MM_NONLEAF_TOTAL stats

On Wed, Oct 23, 2024 at 9:26 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Sat, 19 Oct 2024 01:29:38 +0000 James Houghton <jthoughton@...gle.com> wrote:
>
> > From: Yu Zhao <yuzhao@...gle.com>
> >
> > The removed stats, MM_LEAF_OLD and MM_NONLEAF_TOTAL, are not very
> > helpful and become more complicated to properly compute when adding
> > test/clear_young() notifiers in MGLRU's mm walk.
> >
>
> Patch 2/2 has Fixes: and cc:stable.  Patch 2/2 requires patch 1/2.  So I
> added the same Fixes: and cc:stable to patch 1/2.

SGTM. Thanks!