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 25B1F4DDB28 for ; Thu, 17 Sep 2026 21:10:33 +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=1789679434; cv=none; b=E4mU1ICue3GBhqgbSlrc4lGXkaXm0O820ysjr6qZhvOKlGdLB7AG7IhYY54oc0jTqavf/ERuxaNkacMW41zmVsCabJe7dcf2eCUlKLJ1CiHrVArMsrzVZyKRZ3zksNQfhjjoZZVNhsZ+dcdgiFA+xhM4RIpb1o//aPIP8FGmaIY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789679434; c=relaxed/simple; bh=qLhLOBCjnWPo0G9aZxhi52Kz7/dNa8SnPVkaRgAjq2g=; h=Date:To:From:Subject:Message-Id; b=CYHhrs+I7Lk1RQh/T/V8i1I5RjWZ7HJjDYUuoRZXENtGKVrmJcXa/4jh50+GvDoGfWfpILoCm4FtPR/Q1rNcNPB1lMLbahNgXmQ0CR09fN2D4Va3x5MlAMdKEztifP8GSyJ/n54GZbGkkHl4e18RJ5j9+lrcXrs5CV5B6Czx55Y= 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=Knp6+BTr; 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="Knp6+BTr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7AA41F00893; Thu, 17 Sep 2026 21:10:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789679433; bh=JM2HEZdVHWRQWFz9eInxHFihJuQS0jt3o9Kn3TKzxpQ=; h=Date:To:From:Subject; b=Knp6+BTre/OTDrJQBw9ZprQDiUSw/F0Aoo0PXqoMoZRqqXxp4xV5lJjFp/Exo7d4n SYdEupdffZFAVTQW2cVtBitiTIscbVGejA/pGp6cS19vvUGL7vMdfysojbQ8Nbk6Ip Rw/7R33MPXeAWlvKX3ptCO0zGvOfe4o1S3FOCyIo= Date: Thu, 17 Sep 2026 14:10:32 -0700 To: mm-commits@vger.kernel.org,ljs@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-avoid-use-of-vma_special_flags-in-migrate_vma_setup.patch removed from -mm tree Message-Id: <20260917211032.E7AA41F00893@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: avoid use of VMA_SPECIAL_FLAGS in migrate_vma_setup() has been removed from the -mm tree. Its filename was mm-avoid-use-of-vma_special_flags-in-migrate_vma_setup.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: "Lorenzo Stoakes (ARM)" Subject: mm: avoid use of VMA_SPECIAL_FLAGS in migrate_vma_setup() Date: Mon, 14 Sep 2026 15:57:56 +0100 Now we have the expressive vma_is_kernel_owned() and vma_is_fixed_mapping() predicates, use them to determine whether to proceed with migration. This drops the VMA_IO_BIT test, which is safe as only kernel-owned mappings may set it. hugetlb mappings remain excluded, as they are fixed mappings. No functional change intended. Link: https://lore.kernel.org/20260914-b4-mmap-prepare-vma-flag-sanify-v2-36-7d9781ed5361@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) Signed-off-by: Andrew Morton --- mm/migrate_device.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) --- a/mm/migrate_device.c~mm-avoid-use-of-vma_special_flags-in-migrate_vma_setup +++ a/mm/migrate_device.c @@ -739,19 +739,21 @@ static void migrate_vma_unmap(struct mig */ int migrate_vma_setup(struct migrate_vma *args) { + const struct vm_area_struct *vma = args->vma; long nr_pages = (args->end - args->start) >> PAGE_SHIFT; args->start &= PAGE_MASK; args->end &= PAGE_MASK; - if (!args->vma || vma_test_any_mask(args->vma, VMA_SPECIAL_FLAGS) || - vma_is_dax(args->vma)) + if (!vma) + return -EINVAL; + if (vma_is_kernel_owned(vma) || vma_is_fixed_mapping(vma) || + vma_is_dax(vma)) return -EINVAL; if (nr_pages <= 0) return -EINVAL; - if (args->start < args->vma->vm_start || - args->start >= args->vma->vm_end) + if (args->start < vma->vm_start || args->start >= vma->vm_end) return -EINVAL; - if (args->end <= args->vma->vm_start || args->end > args->vma->vm_end) + if (args->end <= vma->vm_start || args->end > vma->vm_end) return -EINVAL; if (!args->src || !args->dst) return -EINVAL; _ Patches currently in -mm which might be from ljs@kernel.org are mm-vmpressure-remove-window-size-todo.patch tools-testing-selftests-mm-add-missing-gitignore-entries.patch mm-move-drivers-char-memc-to-mm-char-memc.patch mm-implement-file_is_dev_zero-to-uniquely-identify-dev-zero.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-madvise-swap-in-cowd-map_private-file-mappings-on-madv_willneed.patch mm-huge_memory-zap-deposited-page-tables-after-an-rcu-grace-period.patch mm-enable-mmu_gather_rcu_table_free-for-most-2-level-architectures.patch mm-enable-mmu_gather_rcu_table_free-for-mmu-riscv.patch mm-enable-mmu_gather_rcu_table_free-for-mmu-arm.patch mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch mm-enable-mmu_gather_rcu_table_free-for-sparc64.patch mm-enable-mmu_gather_rcu_table_free-for-m68k-coldfire.patch mm-enable-mmu_gather_rcu_table_free-for-sh-x2.patch mm-enable-mmu_gather_rcu_table_free-for-m68k-motorola.patch mm-enable-mmu_gather_rcu_table_free-for-sparc32.patch mm-make-userland-page-table-freeing-rcu-safe.patch mm-change-the-contract-for-free_pgtables-update-docs.patch mm-eliminate-vm_special-vma_special_flags.patch fuse-dax-do-not-set-vm_mixedmap.patch mm-huge_memory-remove-vma_is_special_huge.patch mm-vma-introduce-and-use-vma_can_gup.patch mm-vma-const-ify-vma_assert_stabilised-and-associated-functions.patch mm-implement-and-use-vma_has_anon_rmap-silence-kcsan.patch mm-update-comments-to-refer-to-anon-rmap-rather-than-anon_vma.patch