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From: Sasha Levin <sashal@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	patches@lists.linux.dev,
	Zi Yan <ziy@nvidia.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Baolin Wang <baolin.wang@linux.alibaba.com>,
	"Lorenzo Stoakes (ARM)" <ljs@kernel.org>,
	Barry Song <baohua@kernel.org>,
	David Hildenbrand <david@kernel.org>,
	Dev Jain <dev.jain@arm.com>,
	Lance Yang <lance.yang@linux.dev>,
	Vegard Nossum <vegard.nossum@oracle.com>,
	"Liam R. Howlett" <liam@infradead.org>,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	Ryan Roberts <ryan.roberts@arm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Subject: Re: [PATCH 6.12 0472/1102] mm/huge_memory: use folios memcg inside __folio_split()
Date: Sat, 19 Sep 2026 20:47:07 -0400
Message-ID: <20260920000825.3-1-sashal@kernel.org>
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References: <20260917151539.408551884@linuxfoundation.org> <20260917151551.542102472@linuxfoundation.org> <70fbd5c6-2903-47e5-9627-4e028be7a858@oracle.com>
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On Fri, Sep 19, 2026 at 08:23:49PM +0530, Harshit Mogalapalli wrote:
> The backport instead passes the raw result of folio_memcg() and never
> drops a reference.  That raw pointer provides neither the css reference
> required by set_active_memcg() nor the helper's root-memcg fallback.
[...]
> Maybe lets drop this and get it backported correctly next cycle ?

Dropped from the 6.12 and 6.6 queues (the same substitution is present on
both, not just 6.12).

-- 
Thanks,
Sasha