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Wed, 9 Sep 2026 04:31:01 -0400 (EDT) Date: Wed, 9 Sep 2026 09:31:00 +0100 From: Kiryl Shutsemau To: kasong@tencent.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Zi Yan , Baolin Wang , "Liam R. Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Lance Yang , Usama Arif , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Chris Li , Kemeng Shi , Nhat Pham , Baoquan He , Barry Song , Youngjun Park , Yeoreum Yun , Shivam Kalra , Kairui Song Subject: Re: [PATCH v4 16/17] mm/huge_memory: count only swap cache refs in anon folio split Message-ID: References: <20260908-swap-thp-cleanup-v4-0-b532a3f20e71@tencent.com> <20260908-swap-thp-cleanup-v4-16-b532a3f20e71@tencent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260908-swap-thp-cleanup-v4-16-b532a3f20e71@tencent.com> X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 6242820005 X-Stat-Signature: ti74mdosyhzmbpnorr5opdex3jqoxafw X-Rspam-User: X-HE-Tag: 1788942670-30414 X-HE-Meta: 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 3JW7zzg0 JJi33Ui3yD4Z3ndMsu4OnEK+oI7CfQP8iSSxvi70mocWapaWj39bT1erX+yKLMfnKrAsdx/c75GXebUxH5lluW4nBe+liSNN8IB5GIQHdamDE8Q0xAG7vN1z6YazpiULitEceRFpBFAJpxKVdHGavIyXHV7ydW/dGyIg2dUWdI5F6ivCBVHggj1d3/KKFgFDAT3ncrkCJ7jZKv8HIN1VR6c5bud61HZRZJLTp0lDncqeu1ywSjAYPGFDaQWjz1C3EvbfSUIr01M5eiVjeuO1M9zCnpjpLJcFyZXqnQPWEn+XRiro6idOw4fSpJh1KZkaaiPglliW03TXVOt4twMCpPSLreHOSsByg70tyUaYNvc0NC9d3xO03PZe3NZt31yCrrwyL5VpyHsTs8OZZIvZHvLQVIFwTSjDA1FTpwJmsCUHaN9LKeYE/czXovbCzquuAuZxFSFz9lj5kmwVoshiRPBzPSZQz+73uEFsw Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Sep 08, 2026 at 02:12:20AM +0800, Kairui Song via B4 Relay wrote: > From: Kairui Song > > Only __folio_freeze_split_anon() sees anon folios and swap cache folios > now. The file split helper only handles page cache folios, which hold > exactly folio_nr_pages() references. > > Rename folio_cache_ref_count() to folio_swapcache_ref_count() and drop > the anon check so the helper counts what its name says. The file split > helper now uses folio_nr_pages() directly. > > No feature change. > > Reviewed-by: Zi Yan > Reviewed-by: Yeoreum Yun > Signed-off-by: Kairui Song Reviewed-by: Kiryl Shutsemau (Meta) -- Kiryl Shutsemau / Kirill A. Shutemov