From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8837F3E8695 for ; Thu, 13 Aug 2026 17:55:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786643714; cv=none; b=TbLfYrBMHyzIdgqUtjsyShKtDmZTNBqAUqr1CZZQzbOKq4r+ir9i85bEBhfOe/GRA630ijw6Wog07B1oQURqm/rTCtsUNLudNW2mN+Nyw7gPpfKATYeGWj7eSttGPzxmGLa9JBN8h9Hc9opXP/VGoq7mpWCPrFXinehkN0pxiBI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786643714; c=relaxed/simple; bh=0pLGF1LrV8Y58rf2iqT/HFvAW+rKg8jRepODkFmIgPk=; h=Date:To:From:Subject:Message-Id; b=QRVKMESeFv1FmhrkQAGfQ09GPOeMCHH/WefN+yss7wFjTHv/i7ygN2tlEZ3YuLNCvMlpBk5axV8tYwc3VLUHidB+14MsPa7vaDRq9jtsou0mE+DLv2Sz0fLl966K4BMhLktTEmEt4A7Wl3jm4sB4YZMqoZ7N9A8qvwBwAPRc8tg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=UVyv9v2c; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="UVyv9v2c" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B39331F00A3E; Thu, 13 Aug 2026 17:55:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1786643706; bh=oRuw3HKmxhTaDXJ/yqYNndZoY+4zSvf/UCAIq1S0qjE=; h=Date:To:From:Subject; b=UVyv9v2cJUWrud7j8sHJeCqOtyjcAXxVpccxI4AQHJ8TC0n1v3KBf70IjP7jQdJ4i r5crjO6DlrmbFSxVtwiPY6dUJnIQJkDz16atDu0IgGUUoVlmKr0H7iDHKhBXsW5hdA uknKEwrG06a91CyeJqHks5k9ko99PxJLnKW+pA40= Date: Thu, 13 Aug 2026 10:55:06 -0700 To: mm-commits@vger.kernel.org,ljs@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-abstract-vma_address-and-introduce-vma_anon_address.patch removed from -mm tree Message-Id: <20260813175506.B39331F00A3E@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm: abstract vma_address() and introduce vma_anon_address() has been removed from the -mm tree. Its filename was mm-abstract-vma_address-and-introduce-vma_anon_address.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: "Lorenzo Stoakes (ARM)" Subject: mm: abstract vma_address() and introduce vma_anon_address() Date: Thu, 06 Aug 2026 21:21:29 +0100 Introduce __vma_address() which abstracts the VMA start page offset field as pgoff_start, then update vma_address() to use it. Then introduce vma_anon_address() which does the equivalent of vma_address(), only using the anonymous page offset of the VMA rather than the file-backed one. Also add an assert to ensure that the function is not called for mappings which are file-backed but not MAP_PRIVATE to ensure it is only used in the correct places. This will be necessary for determining the address of a folio's index within a VMA when the folio belongs to a MAP_PRIVATE file-backed VMA but has been CoW'd, and thus is anonymous, once the anonymous VMA page offset field is used for the reverse mapping. No callers are updated, so no functional change intended. Link: https://lore.kernel.org/20260806-b4-scalable-cow-virt-pgoff-v4-4-ab318a350404@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) Acked-by: David Hildenbrand (Arm) Cc: Adrian Hunter Cc: Alexander Deucher Cc: Alexander Gordeev Cc: Alexander Shishkin Cc: Alistair Popple Cc: Arnaldo Carvalho de Melo Cc: Arnd Bergmann Cc: Baolin Wang Cc: Baoquan He Cc: Barry Song Cc: Boris Brezillon Cc: Byungchul Park Cc: Chengming Zhou Cc: Chris Li Cc: Christan König Cc: Christian Borntraeger Cc: Claudio Imbrenda Cc: Dave Airlie Cc: Dev Jain Cc: Gerald Schaefer Cc: Greg Kroah-Hartman Cc: Gregory Price (Meta) Cc: Harry Yoo Cc: Heiko Carstens Cc: Huang Ray Cc: "Huang, Ying" Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jan Kara Cc: Jann Horn Cc: Janosch Frank Cc: Jason Gunthorpe Cc: Jiri Olsa Cc: John Hubbard Cc: Joshua Hahn Cc: Kairui Song Cc: Kees Cook Cc: Kemeng Shi Cc: Lance Yang Cc: Liam R. Howlett Cc: Liviu Dudau Cc: Maarten Lankhorst Cc: Marc Rutland Cc: "Masami Hiramatsu (Google)" Cc: Matthew Auld Cc: Matthew Brost Cc: Matthew Wilcox (Oracle) Cc: Maxime Ripard Cc: Miaohe Lin Cc: Michal Hocko Cc: Mike Rapoport Cc: Muchun Song Cc: Namhyung kim Cc: Naoya Horiguchi Cc: Nhat Pham Cc: Nico Pache Cc: Oleg Nesterov Cc: Oscar Salvador Cc: Pedro Falcato Cc: Peter Xu Cc: Peter Zijlstra Cc: Rakie Kim Cc: Rik van Riel Cc: Rodrigo Vivi Cc: Ryan Roberts Cc: Steven Price Cc: Suren Baghdasaryan Cc: Sven Schnelle Cc: Cc: Thomas Hellström Cc: Thomas Zimemrmann Cc: Vasily Gorbik Cc: Vlastimil Babka Cc: Xu Xin Cc: Zi Yan Signed-off-by: Andrew Morton --- mm/internal.h | 49 ++++++++++++++++++++++++++++++++++++------------ 1 file changed, 37 insertions(+), 12 deletions(-) --- a/mm/internal.h~mm-abstract-vma_address-and-introduce-vma_anon_address +++ a/mm/internal.h @@ -1017,19 +1017,9 @@ void mlock_drain_remote(int cpu); extern pmd_t maybe_pmd_mkwrite(pmd_t pmd, struct vm_area_struct *vma); -/** - * vma_address - Find the virtual address a page range is mapped at - * @vma: The vma which maps this object. - * @pgoff: The page offset within its object. - * @nr_pages: The number of pages to consider. - * - * If any page in this range is mapped by this VMA, return the first address - * where any of these pages appear. Otherwise, return -EFAULT. - */ -static inline unsigned long vma_address(const struct vm_area_struct *vma, - pgoff_t pgoff, unsigned long nr_pages) +static inline unsigned long __vma_address(const struct vm_area_struct *vma, + pgoff_t pgoff, pgoff_t pgoff_start, unsigned long nr_pages) { - const pgoff_t pgoff_start = vma_start_pgoff(vma); unsigned long address; if (pgoff >= pgoff_start) { @@ -1047,6 +1037,41 @@ static inline unsigned long vma_address( return address; } +/** + * vma_address - Find the virtual address a page range is mapped at. + * @vma: The vma which maps this object. + * @pgoff: The page offset within its object. + * @nr_pages: The number of pages to consider. + * + * If any page in this range is mapped by this VMA, return the first address + * where any of these pages appear. Otherwise, return -EFAULT. + */ +static inline unsigned long vma_address(const struct vm_area_struct *vma, + pgoff_t pgoff, unsigned long nr_pages) +{ + return __vma_address(vma, pgoff, vma_start_pgoff(vma), nr_pages); +} + +/** + * vma_anon_address - Find the address an anonymous folio with index @pgoff_anon + * is mapped at. + * @vma: The vma which maps this object. + * @pgoff_anon: The anonymous page index belonging to the folio. + * @nr_pages: The number of pages to consider. + * + * This is only valid for anonymous or MAP_PRIVATE-mapped file-backed VMAs. + * + * Returns: If any page in this range is mapped by this VMA, return the first + * address where any of these pages appear. Otherwise, return -EFAULT. + */ +static inline unsigned long vma_anon_address(const struct vm_area_struct *vma, + pgoff_t pgoff_anon, unsigned long nr_pages) +{ + VM_WARN_ON_ONCE(!vma_is_cow_mapping(vma)); + + return __vma_address(vma, pgoff_anon, vma_start_anon_pgoff(vma), nr_pages); +} + /* * Then at what user virtual address will none of the range be found in vma? * Assumes that vma_address() already returned a good starting address. _ Patches currently in -mm which might be from ljs@kernel.org are mm-update-print_bad_page_map-to-show-anon-index-if-appropriate.patch mm-introduce-and-use-vma_filebacked_address.patch mm-vma-fix-self-merge-check-in-copy_vma.patch tools-testing-vma-add-tests-for-copy_vma-self-merge.patch mm-propagate-vma-anonymous-page-offset-on-map-remap-split-merge.patch mm-rmap-track-whether-the-page-vma-mapped-pgoff-is-anonymous.patch mm-clean-up-vma_address_end.patch mm-huge_memory-update-remove_migration_pmd-to-accept-a-folio.patch mm-migrate-calculate-large-folio-page-index-using-pfn.patch mm-rmap-use-anon-pgoff-to-track-map_private-file-backed-anon-folios.patch tools-testing-vma-expand-vma-merge-tests-to-assert-anon-pgoff.patch tools-testing-selftests-mm-test-anonymous-page-offset-merge-behaviour.patch mm-vma-only-permit-map_private-dev-zero-to-be-mapped-anonymous.patch mm-vma-make-map_private-mapped-dev-zero-mappings-truly-anonymous.patch tools-testing-vma-add-test-to-assert-map_private-dev-zero-is-anon.patch tools-testing-selftests-mm-add-map_private-dev-zero-merge-tests.patch mm-add-some-missing-includes-to-mm-local-headers.patch maintainers-add-drivers-char-memc-to-mm-misc-memory-mapping-sections.patch