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t=1783918865; bh=CPHFu/HOUKfGUBhv1RIN/ECa0WyCmUkHetizFU3uUJ4=; h=From:To:Cc:Subject:Date:From; b=agt6Kmhk10EuC+oLXQPFGu2ZK+BpREh3mJTtgNRzoZJ61TeDXZHENPIXPihq5fZEB F5osFeXgTPcyImTqXgC9XWC31TDBsDIUN60pWc55Z7CWAozc2pa35AmReWYzUH/cfL bYdHo5HtSyeRL7HgrZ5tXlVOSm2shXf95LGTyAuY= From: Dev Jain To: akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org, muchun.song@linux.dev, osalvador@suse.de Cc: Dev Jain , riel@surriel.com, liam@infradead.org, vbabka@kernel.org, harry@kernel.org, jannh@google.com, lance.yang@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, ryan.roberts@arm.com, anshuman.khandual@arm.com Subject: [PATCH v3 0/5] mm/rmap: Refactor try_to_unmap_one Date: Mon, 13 Jul 2026 05:00:43 +0000 Message-ID: <20260713050050.1017741-1-dev.jain@arm.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 2274D140009 X-Stat-Signature: gopn9wxs4zkfx19q4denhtchx419cweq X-HE-Tag: 1783918865-432514 X-HE-Meta: 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 GllnQOM8 Ji0SpatPXfWkXNX+7m89N6irtxXd14lHEVI5Z6gnHjyzQDJxPDFLQsEqA3rL18Jp1wQjC2NKRobls7IpwuzHUYrJH7qZrbukOukiOFDR3hvp8Cxw1xkDVcqCXgn1uRWfNRl40Vu993kkcraTbT8dZ/FTvrtTWhkpZqYyXkQ8KiyM75Wvd5+wDD+EH6Mz+f1CCRH6X1To+PiQetT01ReArMjDJcFboYT48ozb/auBXTV1ObOApEg8z/AvHPoneU/4HbPHvat1rfHYtGhhVCDMkFkXI/PPsMhY04HeDeN4dfQ2/E38yNrG5Cc2LBq+jKr8GwZSy Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: In preparation for batching anonymous large folio unmapping to optimize it, refactor try_to_unmap_one. This series refactors hugetlb, anon-lazyfree and anon-swapbacked logic into their own functions, significantly reducing the length of the huge try_to_unmap_one. --- Split out from https://lore.kernel.org/all/20260526063635.61721-1-dev.jain@arm.com/ mm-selftests pass on arm64, built on arm64 and x86. v2->v3: - Patch 2: fix comment to say that TTU_HWPOISON can be true for small folios only in try_to_unmap_one, since hugetlb bits are now refactored away - Patch 5: Directly do if (WARN_ON_ONCE()) - Rebase on latest mm-unstable to resolve conflicts with 30c83145c5b3 ("mm: rename uffd-wp PTE accessors to uffd") v1->v2: - constify ttu flags in try_to_unmap_hugetlb_one, move const variables up - Assert address passed to try_to_unmap_hugetlb_one equals pvmw.address - Patch 3: code and comment polishing, do the stat update in the function - Remove unnecessary inline hints, remove set_swp_pte_at, instead have swp_pte_prepare + set_ptes. Rename subpage -> page. constify anon_exclusive. - Do pte restoration in caller Dev Jain (5): mm/rmap: convert page -> folio for hwpoison checks mm/rmap: Add try_to_unmap_hugetlb_one mm/rmap: refactor some code around lazyfree folio unmapping mm/rmap: refactor anon folio unmap in try_to_unmap_one mm/rmap: add anon folio unmap dispatcher include/linux/hugetlb.h | 1 + mm/rmap.c | 415 ++++++++++++++++++++++------------------ 2 files changed, 232 insertions(+), 184 deletions(-) -- 2.43.0