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From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	"Kiryl Shutsemau (Meta)" <kas@kernel.org>,
	Hao Zhang <zhanghao1@kylinos.cn>,
	"David Hildenbrand (Arm)" <david@kernel.org>,
	Zi Yan <ziy@nvidia.com>,
	Baolin Wang <baolin.wang@linux.alibaba.com>,
	Miaohe Lin <linmiaohe@huawei.com>,
	Barry Song <baohua@kernel.org>,
	Dev Jain <dev.jain@arm.com>,
	Lance Yang <lance.yang@linux.dev>,
	"Liam R. Howlett" <liam@infradead.org>,
	Lorenzo Stoakes <ljs@kernel.org>,
	Naoya Horiguchi <nao.horiguchi@gmail.com>,
	Nico Pache <npache@redhat.com>,
	Ryan Roberts <ryan.roberts@arm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Kiryl Shutsemau <kirill@shutemov.name>
Subject: Re: [PATCH 5.15.y] mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios
Date: Thu,  6 Aug 2026 07:36:04 -0400
Message-ID: <20260806021809.0011-sashal@kernel.org>
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On Wed, Aug 05, 2026 at 02:45:12PM +0100, Kiryl Shutsemau wrote:
> Do every mapping dereference while @folio still pins the inode: drop
> i_mmap_rwsem right after remap_page(), before the loop that unlocks and
> frees the after-split folios, and clear @mapping so the exit path does not
> unlock it again.

Queued for 5.15, thanks.

-- 
Thanks,
Sasha