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bh=Hdg/tLq6AWtfKBheXabe4Hz3TQClVfuMhfgdlP9/4jQ=; h=From:To:Cc:Subject:Date:From; b=OpGnhiW33CuvRMljgllb0taozw6+R+0ep/mt8W9tWgbLEeLtvTT1Sdn70wdZ2oHfL YrP8Y/LtKtLGW0CY4miopWz/ayt8UvKwr7x+REHE5cpmoZI8fwwvee836LxDLj6ymm xN6nSnYjiOFF59x4yrbyq9nl4c6qvXl7b4EUZ7FU= 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 v2 0/5] mm/rmap: Refactor try_to_unmap_one Date: Fri, 10 Jul 2026 05:59:09 +0000 Message-ID: <20260710055915.638659-1-dev.jain@arm.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: C0C8B100004 X-Rspam-User: X-Stat-Signature: o4ue6q9fw9fwstc4jjqrtia7srtecip9 X-Rspamd-Server: rspam03 X-HE-Tag: 1783663166-159721 X-HE-Meta: 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 RS7/qFfB /43Lp1FhjugZxyAf73Hbedl8Xjxsr1s/3rWHfYOBaBC0YxD5LzpSfoaQLRAl2d5NDjx5/HQR03K42v1sUM8hhO7okNX8W/V5bpq28FIpZVsC5w7ugV+A0Qb7OiUcgVKk3Yheq3k5ijnfHKyn8T9fzB1jXSxUee5v8zXgWJ3YPnpj3gAIaBJ/ZeLVkPrEdyI2O1dhPEcvm6FtxH148J5WgYCdxCsYv+SwA8ptYihzNntNvvXmJ9UjU8Hqx8xUJ9j7llZvg+eFO6LXLeE5+5CsxvvbPq+2Kv7W2PKxDlubgF9lb34zLSSztsFJoVFbpAtfuLSAw 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. 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 | 420 ++++++++++++++++++++++------------------ 2 files changed, 237 insertions(+), 184 deletions(-) -- 2.43.0