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Date: Mon, 18 May 2026 14:51:36 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Kairui Song <ryncsn@gmail.com>
Cc: kasong@tencent.com, linux-mm@kvack.org, David Hildenbrand
 <david@kernel.org>, Zi Yan <ziy@nvidia.com>, Baolin Wang
 <baolin.wang@linux.alibaba.com>, Barry Song <baohua@kernel.org>, Hugh
 Dickins <hughd@google.com>, Chris Li <chrisl@kernel.org>, Kemeng Shi
 <shikemeng@huaweicloud.com>, Nhat Pham <nphamcs@gmail.com>, Baoquan He
 <bhe@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, Youngjun Park
 <youngjun.park@lge.com>, Chengming Zhou <chengming.zhou@linux.dev>, Roman
 Gushchin <roman.gushchin@linux.dev>, Shakeel Butt <shakeel.butt@linux.dev>,
 Muchun Song <muchun.song@linux.dev>, Usama Arif <usama.arif@linux.dev>,
 linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Lorenzo Stoakes
 <ljs@kernel.org>, Yosry Ahmed <yosry@kernel.org>, Qi Zheng
 <qi.zheng@linux.dev>, Roman Gushchin <roman.gushchin@linux.dev>
Subject: Re: [PATCH v5 00/12] mm, swap: swap table phase IV: unify
 allocation and reduce static metadata
Message-Id: <20260518145136.8541d74ab64d3d42d9f1a4ce@linux-foundation.org>
In-Reply-To: <CAMgjq7DryNOmJbJ38tiwFadVT3oaMTTtQ3=BxD70s5AVjG8pbw@mail.gmail.com>
References: <20260517-swap-table-p4-v5-0-88ae43e064c7@tencent.com>
	<CAMgjq7DryNOmJbJ38tiwFadVT3oaMTTtQ3=BxD70s5AVjG8pbw@mail.gmail.com>
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On Tue, 19 May 2026 02:11:35 +0800 Kairui Song <ryncsn@gmail.com> wrote:

> On Sun, May 17, 2026 at 11:40 PM Kairui Song via B4 Relay
> <devnull+kasong.tencent.com@kernel.org> wrote:
> >
> > From: Kairui Song <kasong@tencent.com>
> >
> > This series unifies the allocation and charging of anon and shmem swap
> > in folios, provides better synchronization, consolidates the metadata
> > management, hence dropping the static array and map, and improves the
> > performance. The static metadata overhead is now close to zero, and
> > workload performance is slightly improved.
> >
> 
> Sashiko only gave a warning this time (and it's false positive):

Sashiko behaved unusually.  "Note: The format of this report is altered
due to recitation restrictions.  Direct quotes from the original patch
are omitted, and a free-form summary is provided instead.".

	https://sashiko.dev/#/patchset/20260517-swap-table-p4-v5-0-88ae43e064c7@tencent.com

Roman, what's that all about?

Thanks, I'll add this to mm-new for some testing.  Review is thin at
this time, but we have a large and dedicated band of swap maintainers,
so I'm sure that will change ;)

I understand that there are some architectural/directional differences
amongst the team (or there used to be), so please don't be shy about
weighing in if you think we should be taking things in a different
direction.