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 D9324440A00 for ; Thu, 6 Aug 2026 23:13:57 +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=1786058039; cv=none; b=YEGcPJ37flK0fauRC88bQF6e5QhVVmHUG0L+1bZN8vIntzeJsC5+GRrHWYqeg/75CdVJPaAH+A0cwwY0i/5Q9MTQmw77naowawFoFn91gM+2Gt0oLlK+PMxqjLSzWHsqlwx76LnW/odbs3Gu/RnoMK4k6tfPEMnbXsbh+aNydHY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786058039; c=relaxed/simple; bh=O4jjpvPl4BmLO/i3ZQd3VaNL+pdrFcTC76bDzR/GjQs=; h=Date:To:From:Subject:Message-Id; b=C5lY1Q5Kd38rPu/vvrtxbSFfM1Q9HNUoqMqtixKAGO06mvVIBjxibFz4mVNSJbCzik95AoOilD4kBur1rPWgXIYLSWKwpCPTdXk6GU+iFE6o92/H5j8J+Iur57Yx3fc4CVfjnk5xMB3j9BUl61qP+7Q0i0tyEiPRKwBxaPEI2bA= 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=Flwr066U; 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="Flwr066U" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 72E551F000E9; Thu, 6 Aug 2026 23:13:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1786058037; bh=aYiTeL+jP54YNgnhzLYrD1ggT513I5sgwrvGGmUNvt0=; h=Date:To:From:Subject; b=Flwr066UbxFzLL0OGH69JsqEL6LTbkEUkhCFUnr8Fd6Rc1TzqnYsqae/gS4XEZs9b pPBZlSnp9li3Gqcu1yEWW1x1P5epidSoY57AeYHu7XsP5ufghwlEDqpFm+vEWHnOYE as0qgTv/VdpXbsKWpiQNY3ee0eN/GHFMcR3qAMfA= Date: Thu, 06 Aug 2026 16:13:57 -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: <20260806231357.72E551F000E9@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: Mon, 20 Jul 2026 15:38:29 +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 virtual 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/20260720-b4-scalable-cow-virt-pgoff-v2-3-2d549757a76f@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) Cc: Alistair Popple Cc: Arnd Bergmann Cc: Baolin Wang Cc: Barry Song Cc: Byungchul Park Cc: Chengming Zhou Cc: David Hildenbrand Cc: Dev Jain Cc: Greg Kroah-Hartman Cc: Gregory Price Cc: Harry Yoo Cc: "Huang, Ying" Cc: Jan Kara Cc: Jann Horn Cc: Joshua Hahn Cc: Kees Cook Cc: Lance Yang Cc: Liam R. Howlett Cc: Matthew Brost Cc: Matthew Wilcox (Oracle) Cc: Miaohe Lin Cc: Michal Hocko Cc: Mike Rapoport Cc: Naoya Horiguchi Cc: Nico Pache Cc: Pedro Falcato Cc: Peter Xu Cc: Rakie Kim Cc: Rik van Riel Cc: Ryan Roberts Cc: Suren Baghdasaryan 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_virt + * is mapped at. + * @vma: The vma which maps this object. + * @pgoff_virt: The virtual 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_virt, unsigned long nr_pages) +{ + VM_WARN_ON_ONCE(!vma_is_anonymous(vma) && vma_test(vma, VMA_SHARED_BIT)); + + return __vma_address(vma, pgoff_virt, vma_start_virt_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 x86-mm-pat-acquire-init_mm-write-lock-on-collapse-to-avoid-uaf.patch x86-mm-pat-acquire-init_mm-read-lock-on-attribute-change-to-avoid-uaf.patch x86-mm-pat-allocate-split-page-tables-as-kernel-page-tables.patch mm-introduce-vma_flags_can_grow-and-vma_can_grow.patch mm-vma-update-do_mmap-to-use-vma_flags_t.patch mm-convert-__get_unmapped_area-to-use-vma_flags_t.patch mm-update-generic_get_unmapped_area-to-use-vma_flags_t.patch mm-prefer-mm-def_vma_flags-in-mm-logic.patch mm-vma-convert-vm_pgprot_modify-to-use-vma_flags_t-and-rename.patch mm-vma-rename-vma_get_page_prot-to-vma_flags_to_page_prot.patch mm-introduce-vma_get_page_prot-and-use-it.patch mm-vma-update-create_init_stack_vma-to-use-vma_flags_t.patch mm-vma-convert-miscellaneous-uses-of-vma-flags-in-core-mm.patch mm-mlock-convert-mlock-code-to-use-vma_flags_t.patch mm-mprotect-convert-mprotect-code-to-use-vma_flags_t.patch mm-mremap-convert-mremap-code-to-use-vma_flags_t.patch mm-mseal-remove-superfluous-comments-fix-confusion-around-mm.patch mm-mseal-limit-scope-of-mseal-address-zero-to-address-zero.patch mm-mseal-remove-further-superfluous-comments-do_mseal.patch mm-update-print_bad_page_map-to-show-virtual-page-index.patch mm-introduce-and-use-vma_filebacked_address.patch mm-propagate-vma-virtual-page-offset-on-map-remap-split-merge.patch mm-rmap-track-whether-the-page-vma-mapped-walk-is-anonymous.patch mm-introduce-and-use-linear_folio_page_index.patch mm-rmap-use-virt-pgoff-for-map_private-file-backed-anon-folios.patch tools-testing-vma-expand-vma-merge-tests-to-assert-virt-pgoff.patch tools-testing-selftests-mm-test-virtual-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