From: Andrew Morton <akpm@linux-foundation.org>
To: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
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Subject: Re: [PATCH v2 00/40] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL
Date: Mon, 14 Sep 2026 18:08:11 -0700 [thread overview]
Message-ID: <20260914180811.057cba8fcc48d6e0b53a2683@linux-foundation.org> (raw)
In-Reply-To: <20260914-b4-mmap-prepare-vma-flag-sanify-v2-0-7d9781ed5361@kernel.org>
On Mon, 14 Sep 2026 15:57:20 +0100 "Lorenzo Stoakes (ARM)" <ljs@kernel.org> wrote:
> The VM_SPECIAL / VMA_SPECIAL_FLAGS mask conflates several unrelated
> properties:
>
> ...
>
> It's all rather a mess.
>
> This series brings some order to things by both limiting what drivers can
> do with VMA flags and switching to using predicates that describe
> behaviour, not arbitrary flags.
That's a lot of patches.
Review is thin and I expect this won't improve a lot. Lots of "no
functional changes" changes.
Perhaps it would be helpful if you were to identify those patches which
you'd like to see reviewers focus on?
> 1153 insertions(+), 582 deletions(-)
It's funny how often cleanup patches do this.
All queued up, thanks.
next prev parent reply other threads:[~2026-09-15 1:08 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-14 14:57 Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 01/40] mm/vma: fix mmap_prepare file handling, remove file_doesnt_need_get Lorenzo Stoakes (ARM)
2026-09-17 9:33 ` Mike Rapoport
2026-09-17 9:57 ` Lorenzo Stoakes (ARM)
2026-09-17 11:40 ` Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 02/40] mm/vma: predicate setting mmap_prepare VMA fields on new vma alloc Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 03/40] mm/vma: introduce and use vma_[flags_]can_merge() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 04/40] mm: consistently validate VMA state after mmap[_prepare] hooks Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 05/40] mm/vma: ensure mmap_prepare doesn't set actions on a mergeable vma Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 06/40] mm: make map_kernel_pages_[prepare,complete] internal and unexported Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 07/40] mm/vma: tidy up map kernel pages enum values Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 08/40] mm: add mmap action for discontiguous kernel page mapping Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 09/40] docs: filesystems: update mmap_prepare docs for discontig kernel pgs Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 10/40] drivers/usb/mon: update to use mmap_prepare + map kernel pages Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 11/40] infiniband: update hfi1 to use remap_vmalloc_range() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 12/40] selinux: reject writable opens of policy file, drop mmap shared/write check Lorenzo Stoakes (ARM)
2026-09-14 19:57 ` Paul Moore
2026-09-14 14:57 ` [PATCH v2 13/40] ALSA: pcm: use vm_insert_page() to map PCM status page Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 14/40] bpf: arena: mark arena_map_mmap() mappings VM_MIXEDMAP Lorenzo Stoakes (ARM)
2026-09-14 23:17 ` Emil Tsalapatis
2026-09-14 14:57 ` [PATCH v2 15/40] mm/vma: add vma[_flags]_is_kernel_owned() predicates Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 16/40] mm/vma: only allow mmap to clear VMA_MAYWRITE_BIT if kernel-owned Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 17/40] mm/vma: add and use vma_[flags]_is_fixed_mapping Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 18/40] scsi: sg: convert mmap hook to mmap_prepare and rework Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 19/40] fbdev: defio: assert FBINFO_VIRTFB, drop VM_IO, add VM_MIXEDMAP Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 20/40] HSI: cmt_speech: convert mmap hook to mmap_prepare, refactor Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 21/40] mm/gup: error out early on !VMA_MAYREAD_BIT VMAs Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 22/40] uprobes: remove VM_IO, set VM_MIXEDMAP for mapped kernel pages Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 23/40] mm/mlock: clear VMA_LOCKED_MASK over mmap callback Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 24/40] mm/mlock: eliminate weird VMA_IO_BIT abuse and simplify Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 25/40] mm/vma: enforce that only kernel-owned mappings may set VMA_IO_BIT Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 26/40] mm: remove VMA_IO_BIT check in vma[_flags]_is_kernel_owned() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 27/40] mm: remove hugetlb_inline.h Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 28/40] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 29/40] mm: drop some redundant checks around hugetlb VMAs Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 30/40] mm/madvise: update is_valid_guard_vma() to use vma_can_merge() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 31/40] mm/vma: introduce vma[_flags]_is_persistent() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 32/40] mm/uffd: use predicates for userfaultfd checks Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 33/40] mm/madvise: use predicates for madvise(..., MADV_DOFORK) Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 34/40] mm: eliminate VMA_SPECIAL_FLAGS usage when hugetlb explicitly tested Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 35/40] mm: eliminate VMA_SPECIAL_FLAGS check in lru_gen_look_around() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 36/40] mm: avoid use of VMA_SPECIAL_FLAGS in migrate_vma_setup() Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 37/40] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 38/40] fuse: dax: do not set VM_MIXEDMAP Lorenzo Stoakes (ARM)
2026-09-14 14:57 ` [PATCH v2 39/40] mm/huge_memory: remove vma_is_special_huge() Lorenzo Stoakes (ARM)
2026-09-14 14:58 ` [PATCH v2 40/40] mm/vma: introduce and use vma[_flags]_can_gup() Lorenzo Stoakes (ARM)
2026-09-15 1:08 ` Andrew Morton [this message]
2026-09-15 8:35 ` [PATCH v2 00/40] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL Lorenzo Stoakes (ARM)
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