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 EDA79391E52 for ; Sat, 10 Oct 2026 21:40:08 +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=1791668413; cv=none; b=GpojsiJ7OIarV9kAj4izFFokqH3C4E6d+wEkCbWw0O4T9QrZ6DELI9Vz2JNzSCVLduiJNXg6YVlwhAxxaWsEkbh0eLkhxnQrEkBxpRcWmcTihCSxFL+oYehXZNf/oTzhwyByaswrKs3FMR3Aho3sWGqjSODTKrMuzrfZLpuLRZ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791668413; c=relaxed/simple; bh=hgnJbfHlJZ5xLkf2TmfagN5KsyVu+4qZTwKC37d86TQ=; h=Date:To:From:Subject:Message-Id; b=NeBVKS8F0fY62Oua0JZ5WYssfgumouUtY4oJxmM8TuvbNmM6fzaZsUKhCFqLE5DzTiWEuBhxG8E5Ed3VGCW0HKkCF8dX7VZn03GYB7LZ8aaM1eQJpTsqbnq5fZll8lODouY835DB2hBqQWZH6gBX7p7a8SxTqzbuESuZQN32+kw= 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=YJL07qOy; 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="YJL07qOy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C238D1F00898; Sat, 10 Oct 2026 21:40:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791668408; bh=TV2OxkJfQ/kPvKFVwFvVMJJvy77maX4JZTTK4dTQ/mM=; h=Date:To:From:Subject; b=YJL07qOyEcWAbg5LHT4mnwj89hiIKI1HUpqCYWYSYIttHzEOi1fg9toHUs2+vAv7e 8ExtNlLkkWQggEBIKiUjI3aCRyDLvN+qE8vj59IVeFZt+yfA6Cal+1rtXD7D36hb9D gwGxuvD7jiDR9TmXfCH8ZH70dnndKq+4Yf/wP13A= Date: Sat, 10 Oct 2026 14:40:08 -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: <20261010214008.C238D1F00898@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: Sat, 03 Oct 2026 17:33:06 +0100 Now we have the expressive vma_is_mm_managed() 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 mm-managed mappings may not set it. hugetlb mappings remain excluded, as they are fixed mappings. No functional change intended. Link: https://lore.kernel.org/20261003-b4-mmap-prepare-vma-flag-sanify-v4-35-a1f052500fd7@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) Signed-off-by: Andrew Morton Reviewed-by: Zi Yan Acked-by: David Hildenbrand (Arm) Cc: Liam R. Howlett Cc: Vlastimil Babka Cc: Jann Horn Cc: Pedro Falcato Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Michal Hocko Cc: Jonathan Corbet Cc: Greg Kroah-Hartman Cc: Dennis Dalessandro Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: Paul Moore Cc: Stephen Smalley Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: Andrii Nakryiko Cc: Eduard Zingerman Cc: Kumar Kartikeya Dwivedi Cc: Baolin Wang Cc: Nico Pache Cc: Ryan Roberts Cc: Dev Jain Cc: Barry Song Cc: Lance Yang Cc: Usama Arif Cc: Kiryl Shutsemau Cc: Doug Gilbert Cc: James Bottomley Cc: Martin K. Petersen Cc: Simona Vetter Cc: Helge Deller Cc: Sebastian Reichel Cc: John Hubbard Cc: Peter Xu Cc: Masami Hiramatsu Cc: Oleg Nesterov Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: Arnaldo Carvalho de Melo Cc: Namhyung Kim Cc: Mark Rutland Cc: Rik van Riel Cc: Harry Yoo Cc: Juri Lelli Cc: Vincent Guittot Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Thomas Zimmermann Cc: David Airlie Cc: Will Deacon Cc: Aneesh Kumar K.V Cc: Nicholas Piggin Cc: Arnd Bergmann Cc: Muchun Song Cc: Oscar Salvador Cc: Matthew Wilcox (Oracle) Cc: Jan Kara Cc: Marc Zyngier Cc: Oliver Upton Cc: Catalin Marinas Cc: Madhavan Srinivasan Cc: Anup Patel Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: Christian Borntraeger Cc: Janosch Frank Cc: Claudio Imbrenda Cc: Alexander Gordeev Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Vasily Gorbik Cc: David S. Miller Cc: Andreas Larsson Cc: Al Viro Cc: Christian Brauner Cc: Matthew Brost Cc: Joshua Hahn Cc: Rakie Kim Cc: Byungchul Park Cc: Gregory Price Cc: Ying Huang Cc: Alistair Popple Cc: Chris Li Cc: Kairui Song Cc: Kemeng Shi Cc: Nhat Pham Cc: Baoquan He Cc: Youngjun Park Cc: Johannes Weiner Cc: Qi Zheng Cc: Shakeel Butt Cc: Axel Rasmussen Cc: Yuanchu Xie Cc: Wei Xu Cc: Chengming Zhou Cc: Michal Hocko Cc: Miklos Szeredi Cc: Xu Xin --- 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_mm_managed(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-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-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