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 A4BFA3B0585 for ; Sat, 3 Oct 2026 22:39:02 +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=1791067144; cv=none; b=F2Q4M83dJZI5HcGwgq3UTwBnGSGorzgVPFEk54MMT0F1dt28xPWOClvOpDksS46xl77kLqrIiKLTLoi6yAKRo0yt46QPAA+k4MqYYB1XjBdX8BDLY9lAO3BhyEp4SW4ASW++shuyLhAKrEcZyoX+QsYOo2SlbLPgDSFgkSMQfP4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791067144; c=relaxed/simple; bh=jwScjm3L1TkY7HD+J9KfndkQW60XUOHo9DSfXw/+kck=; h=Date:To:From:Subject:Message-Id; b=Gx4OGX90PWP2CJ6qFOWr3vsX1VnaX2nZBrGBvHouY9vqybtQEkWLn/BYDzg0O9Ic+iOByLJ5Wx2d0Xe6jOxzhYmTQHP4CWm+EIeeCuMT1R/GNGOLWIJl6jGrmIR+LpB+d7Bx5TYoLvMnYHGk7veFwIXpK23Gl4qu/YPRdQPNPCk= 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=1Xj99iDy; 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="1Xj99iDy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 838B51F0089C; Sat, 3 Oct 2026 22:39:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791067142; bh=fKp+KmJHaExut2MILxFpP1OgtRAnycafQqPu3eCa1JE=; h=Date:To:From:Subject; b=1Xj99iDyY3p04eoQ1MIURz05plO1FKpeVWGOzRxcoDkZTh3lWDmdc1JQj0/+J4Kfn GzElGlFVwDHrCcPU95KH2BF6P46joVvpaLv5coyyKBPcpy3oKE/4G4PGK33rz42ocw HSHRsFm9V/HzSM7c1A5TNwtIei+Jco51TM6GzdrI= Date: Sat, 03 Oct 2026 15:39:02 -0700 To: mm-commits@vger.kernel.org,ljs@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-drop-some-redundant-checks-around-hugetlb-vmas.patch removed from -mm tree Message-Id: <20261003223902.838B51F0089C@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: drop some redundant checks around hugetlb VMAs has been removed from the -mm tree. Its filename was mm-drop-some-redundant-checks-around-hugetlb-vmas.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: "Lorenzo Stoakes (ARM)" Subject: mm: drop some redundant checks around hugetlb VMAs Date: Thu, 17 Sep 2026 17:22:38 +0100 Adjust code which inadvertently perform redundant checks on hugetlb VMAs and clean them up: * hugetlb VMAs have VMA_DONTEXPAND_BIT set so a VMA_SPECIAL_FLAGS check suffices. (migrate_vma_setup() regains an explicit hugetlb test later in the series, once VMA_SPECIAL_FLAGS is removed.) * hugetlb VMAs unconditionally set vma->vm_ops, so they are never anonymous. * hugetlb VMAs do not set VMA_PFNMAP_BIT so checking for this is redundant. While we're here also drop a VM_BUG_ON() which the simplified check above makes unreachable, and use the new VMA flag API. No functional change intended. Link: https://lore.kernel.org/20260917-b4-mmap-prepare-vma-flag-sanify-v3-29-4583d8a23bca@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) Signed-off-by: Andrew Morton Acked-by: Marc Zyngier Reviewed-by: Zi Yan Acked-by: David Hildenbrand (Arm) Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexei Starovoitov Cc: Alistair Popple Cc: Al Viro Cc: Andreas Larsson Cc: Andrii Nakryiko Cc: "Aneesh Kumar K.V" Cc: Anup Patel Cc: Arnaldo Carvalho de Melo Cc: Arnd Bergmann Cc: Axel Rasmussen Cc: Baolin Wang Cc: Baoquan He Cc: Barry Song Cc: "Borislav Petkov (AMD)" Cc: Byungchul Park Cc: Catalin Marinas Cc: Chengming Zhou Cc: Chris Li Cc: Christian Borntraeger Cc: Christian Brauner Cc: Claudio Imbrenda Cc: Dave Airlie Cc: Dave Hansen Cc: David S. Miller Cc: Dennis Dalessandro Cc: Dev Jain Cc: Doug Gilbert Cc: Eduard Zingerman Cc: Emil Tsalapatis Cc: Gerald Schaefer Cc: Greg Kroah-Hartman Cc: Gregory Price Cc: Harry Yoo Cc: Heiko Carstens Cc: Helge Deller Cc: "Huang, Ying" Cc: Ingo Molnar Cc: James Bottomley Cc: Jan Kara Cc: Jann Horn Cc: Janosch Frank Cc: Jaroslav Kysela Cc: Jason Gunthorpe Cc: Jaya Kumar Cc: Johannes Weiner Cc: John Hubbard Cc: Jonathan Corbet Cc: Joshua Hahn Cc: Juri Lelli Cc: Kairui Song Cc: Kemeng Shi Cc: Kiryl Shutsemau Cc: Kumar Kartikeya Dwivedi Cc: Lance Yang Cc: Leon Romanovsky Cc: Liam R. Howlett Cc: Maarten Lankhorst Cc: Madhavan Srinivasan Cc: Marc Rutland Cc: "Masami Hiramatsu (Google)" Cc: Matthew Brost Cc: Matthew Wilcox (Oracle) Cc: Maxime Ripard Cc: Michal Hocko Cc: Michal Hocko Cc: Mike Rapoport Cc: Miklos Szeredi Cc: Muchun Song Cc: Namhyung kim Cc: Nhat Pham Cc: Nicholas Piggin Cc: Oleg Nesterov Cc: Oscar Salvador Cc: Palmer Dabbelt Cc: Paul Moore Cc: Pedro Falcato Cc: Peter Xu Cc: Peter Zijlstra Cc: Rakie Kim Cc: Rik van Riel Cc: Ryan Roberts Cc: Sebastian Reichel Cc: Shakeel Butt Cc: Stephen Smalley Cc: Suren Baghdasaryan Cc: Takashi Iwai (SUSE) Cc: Takashi Iwai Cc: Thomas Zimemrmann Cc: Vasily Gorbik Cc: Vincent Guittot Cc: Vlastimil Babka Cc: Wei Xu Cc: Will Deacon Cc: Yuanchu Xie --- drivers/gpu/drm/drm_gpusvm.c | 3 +-- mm/migrate_device.c | 4 ++-- 2 files changed, 3 insertions(+), 4 deletions(-) --- a/drivers/gpu/drm/drm_gpusvm.c~mm-drop-some-redundant-checks-around-hugetlb-vmas +++ a/drivers/gpu/drm/drm_gpusvm.c @@ -1141,8 +1141,7 @@ drm_gpusvm_range_find_or_insert(struct d * limitations. If/when migrate_vma_* add more support, this logic will * have to change. */ - migrate_devmem = ctx->devmem_possible && - vma_is_anonymous(vas) && !vma_is_hugetlb(vas); + migrate_devmem = ctx->devmem_possible && vma_is_anonymous(vas); chunk_size = drm_gpusvm_range_chunk_size(gpusvm, notifier, vas, fault_addr, gpuva_start, --- a/mm/migrate_device.c~mm-drop-some-redundant-checks-around-hugetlb-vmas +++ a/mm/migrate_device.c @@ -743,8 +743,8 @@ int migrate_vma_setup(struct migrate_vma args->start &= PAGE_MASK; args->end &= PAGE_MASK; - if (!args->vma || vma_is_hugetlb(args->vma) || - (args->vma->vm_flags & VM_SPECIAL) || vma_is_dax(args->vma)) + if (!args->vma || vma_test_any_mask(args->vma, VMA_SPECIAL_FLAGS) || + vma_is_dax(args->vma)) return -EINVAL; if (nr_pages <= 0) return -EINVAL; _ Patches currently in -mm which might be from ljs@kernel.org are mm-mremap-fix-locked_vm-leak-from-mremap_dontunmap-self-merge.patch mm-mremap-fix-locked_vm-leak-by-splitting-vma-for-mremap_dontunmap.patch drivers-char-mem-mmap-readonly-map_shared-dev-zero-correctly.patch 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-khugepaged-deposit-a-newly-allocated-page-table-on-collapse.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-userland-pgtable-freeing-is-rcu-safe-now-remove-leftover-bits.patch mm-change-the-contract-for-free_pgtables-update-docs.patch mm-madvise-update-is_valid_guard_vma-to-use-vma_can_merge.patch mm-vma-introduce-vma_is_persistent.patch mm-uffd-use-predicates-for-userfaultfd-checks.patch mm-madvise-use-predicates-for-madvise-madv_dofork.patch mm-eliminate-vma_special_flags-usage-when-hugetlb-explicitly-tested.patch mm-eliminate-vma_special_flags-check-in-lru_gen_look_around.patch mm-avoid-use-of-vma_special_flags-in-migrate_vma_setup.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 mm-vma-dont-remove-vma-from-rmap-if-pgoff-unchanged.patch