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[128.59.177.174]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-91040673ce0sm122105496d6.25.2026.09.08.08.16.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Sep 2026 08:16:41 -0700 (PDT) From: Tal Zussman Subject: [PATCH v2 0/8] mm: remove page_swap_entry() Date: Tue, 08 Sep 2026 11:16:30 -0400 Message-Id: <20260908-folio_swap_entry-v2-0-ee6d01dfa5e1@columbia.edu> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAM4moGoC/2WNyw6CMBBFf4V0bc1QQmlc+R+GkD4GGYOUtIASw r8L6M7lSc49d2ERA2Fkl2RhASeK5LsNxClhttHdHTm5jZkAIUFBwWvfkq/iS/cVdkOYOeaZk0q m4BDYNusD1vQ+krfyy3E0D7TD3tmNhuLgw3x8Tunu/fIZ/OenlAMvCiVNLrQ1Vl2tb8enIX1GN 7JyXdcPRyQkHsUAAAA= X-Change-ID: 20260807-folio_swap_entry-e53d68610de0 To: Andrew Morton , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Barry Song , Youngjun Park , David Hildenbrand , Zi Yan , Baolin Wang , "Liam R. 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The swap entry is folio state, but the only helper for it is page-based: page_swap_entry() takes a page and recomputes the folio its callers already hold. Several callers avoid it by open-coding the arithmetic on folio->swap instead. Add folio_swap_entry() and folio_page_swap_entry(), convert all users, and remove page_swap_entry(), with a few other cleanups along the way. --- Changes in v2: - Keep the swap entry computation in __split_folio_to_order() open-coded and add a comment, per Zi Yan. - Reduce the zswap patch to using folio_swap_entry(), as the folio conversion landed separately. - Link to v1: https://patch.msgid.link/20260830-folio_swap_entry-v1-0-7786b52acbc8@columbia.edu --- Tal Zussman (8): mm/swap: add folio_swap_entry() and folio_page_swap_entry() mm/huge_memory: add a comment to the open-coded swap entry mm/rmap: use folio_page_swap_entry() in ttu_anon_swapbacked_folio() mm/zswap: use folio_swap_entry() in zswap_store_page() mm/swapfile: use folio_page_swap_entry() arm64: mte: make mte_save_tags() and mte_restore_tags() static arm64: mte: pass the swap entry to mte_save_tags() mm/swap: remove page_swap_entry() arch/arm64/include/asm/mte.h | 2 -- arch/arm64/mm/mteswap.c | 32 ++++++++++++++------------------ include/linux/swap.h | 30 +++++++++++++++++++++++++++--- mm/huge_memory.c | 4 ++++ mm/rmap.c | 2 +- mm/swapfile.c | 4 ++-- mm/zswap.c | 3 +-- 7 files changed, 49 insertions(+), 28 deletions(-) --- base-commit: 9d3243fc689fef444f87e0a703b4c99653137e1b change-id: 20260807-folio_swap_entry-e53d68610de0 Best regards, -- Tal Zussman