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Date: Tue, 4 Aug 2026 14:27:08 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Zi Yan <ziy@nvidia.com>, "Lorenzo Stoakes (ARM)" <ljs@kernel.org>,
 Matthew Wilcox <willy@infradead.org>, William Kucharski
 <william.kucharski@oracle.com>, David Hildenbrand <david@kernel.org>,
 Baolin Wang <baolin.wang@linux.alibaba.com>, "Liam R. Howlett"
 <liam@infradead.org>, Nico Pache <nico.pache@linux.dev>, Ryan Roberts
 <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>, Barry Song
 <baohua@kernel.org>, Lance Yang <lance.yang@linux.dev>, Usama Arif
 <usama.arif@linux.dev>, linux-kernel@vger.kernel.org,
 linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v2 1/2] mm/huge_memory: use folio's memcg inside
 __folio_split()
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References: <20260730-add-gfp_account-to-xas_split_alloc-v2-0-5a56c2361d85@nvidia.com>
	<20260730-add-gfp_account-to-xas_split_alloc-v2-1-5a56c2361d85@nvidia.com>
	<am28pV2PEfHsi4p-@lucifer>
	<DKFEEI2EDS4F.1AHGKB1EL6XRG@nvidia.com>
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On Tue, 4 Aug 2026 16:47:52 -0400 Johannes Weiner <hannes@cmpxchg.org> wrote:

> > Like you said above, only xas_split_alloc() is affected. And we have not
> > seen related workingset regression report (like what Johannes reported
> > in commit 7b785645e8f13 ("mm: fix page cache convergence regression")).
> > It might be OK to not backport.
> > 
> > Johannes, what is your take on this?
> 
> Yeah, let's Cc stable.
> 
> It would be a bear to debug if you ran into this at scale. Which I
> think you could with certain workloads.
> 
> The patches are straight-forward enough. It favors a backport.

I've added cc:stable to both and updated the [2/2] changelog as
suggested in
https://lore.kernel.org/all/DKFELWPHSJNO.3GGVW270HENEG@nvidia.com// So
afaik this series is good-to-go, thanks.