[PATCH v4 00/38] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
[PATCH v4 01/38] mm/vma: fix mmap_prepare file handling, remove file_doesnt_need_get · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 01/38] mm/vma: fix mmap_prepare file handling, remove file_doesnt_need_get · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 01/38] mm/vma: fix mmap_prepare file handling, remove file_doesnt_need_get · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 02/38] mm/vma: introduce and use vma_[flags_]can_merge() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 02/38] mm/vma: introduce and use vma_[flags_]can_merge() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 03/38] mm: consistently validate VMA state after mmap[_prepare] hooks · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 03/38] mm: consistently validate VMA state after mmap[_prepare] hooks · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 04/38] mm/vma: ensure mmap_prepare doesn't set actions on a mergeable vma · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 04/38] mm/vma: ensure mmap_prepare doesn't set actions on a mergeable vma · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 05/38] mm: make map_kernel_pages_[prepare,complete] internal and unexported · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 05/38] mm: make map_kernel_pages_[prepare,complete] internal and unexported · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 06/38] mm/vma: tidy up map kernel pages enum values · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 06/38] mm/vma: tidy up map kernel pages enum values · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 07/38] mm: add mmap action for discontiguous kernel page mapping · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 07/38] mm: add mmap action for discontiguous kernel page mapping · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 07/38] mm: add mmap action for discontiguous kernel page mapping · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
Re: [PATCH v4 07/38] mm: add mmap action for discontiguous kernel page mapping · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-09
[PATCH v4 08/38] docs: filesystems: update mmap_prepare docs for discontig kernel pgs · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 08/38] docs: filesystems: update mmap_prepare docs for discontig kernel pgs · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 08/38] docs: filesystems: update mmap_prepare docs for discontig kernel pgs · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 09/38] drivers/usb/mon: update to use mmap_prepare + map kernel pages · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 09/38] drivers/usb/mon: update to use mmap_prepare + map kernel pages · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 09/38] drivers/usb/mon: update to use mmap_prepare + map kernel pages · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 10/38] infiniband: update hfi1 to use remap_vmalloc_range() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 10/38] infiniband: update hfi1 to use remap_vmalloc_range() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 11/38] selinux: reject writable opens of policy file, drop mmap shared/write check · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 11/38] selinux: reject writable opens of policy file, drop mmap shared/write check · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 11/38] selinux: reject writable opens of policy file, drop mmap shared/write check · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 12/38] ALSA: pcm: use vm_insert_page() to map PCM status page · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 12/38] ALSA: pcm: use vm_insert_page() to map PCM status page · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 12/38] ALSA: pcm: use vm_insert_page() to map PCM status page · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 13/38] bpf: arena: mark arena_map_mmap() mappings VM_MIXEDMAP · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 13/38] bpf: arena: mark arena_map_mmap() mappings VM_MIXEDMAP · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 13/38] bpf: arena: mark arena_map_mmap() mappings VM_MIXEDMAP · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 14/38] mm/vma: add vma[_flags]_is_mm_managed() predicates · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 14/38] mm/vma: add vma[_flags]_is_mm_managed() predicates · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 14/38] mm/vma: add vma[_flags]_is_mm_managed() predicates · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 15/38] mm/vma: only allow mmap to clear VMA_MAYWRITE_BIT if not mm-managed · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 15/38] mm/vma: only allow mmap to clear VMA_MAYWRITE_BIT if not mm-managed · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 16/38] mm/vma: add and use vma_[flags]_is_fixed_mapping · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 16/38] mm/vma: add and use vma_[flags]_is_fixed_mapping · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 16/38] mm/vma: add and use vma_[flags]_is_fixed_mapping · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 17/38] scsi: sg: convert mmap hook to mmap_prepare and rework · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 17/38] scsi: sg: convert mmap hook to mmap_prepare and rework · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 17/38] scsi: sg: convert mmap hook to mmap_prepare and rework · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 18/38] fbdev: defio: assert FBINFO_VIRTFB, drop VM_IO, add VM_MIXEDMAP · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 18/38] fbdev: defio: assert FBINFO_VIRTFB, drop VM_IO, add VM_MIXEDMAP · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 18/38] fbdev: defio: assert FBINFO_VIRTFB, drop VM_IO, add VM_MIXEDMAP · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 19/38] HSI: cmt_speech: convert mmap hook to mmap_prepare, refactor · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 19/38] HSI: cmt_speech: convert mmap hook to mmap_prepare, refactor · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 19/38] HSI: cmt_speech: convert mmap hook to mmap_prepare, refactor · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 20/38] mm/gup: error out early on !VMA_MAYREAD_BIT VMAs · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 20/38] mm/gup: error out early on !VMA_MAYREAD_BIT VMAs · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 20/38] mm/gup: error out early on !VMA_MAYREAD_BIT VMAs · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 21/38] uprobes: remove VM_IO, set VM_MIXEDMAP for mapped kernel pages · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 21/38] uprobes: remove VM_IO, set VM_MIXEDMAP for mapped kernel pages · sashiko-bot@kernel.org · 2026-10-03
Re: [PATCH v4 21/38] uprobes: remove VM_IO, set VM_MIXEDMAP for mapped kernel pages · Suren Baghdasaryan <surenb@google.com> · 2026-10-04
[PATCH v4 22/38] mm/mlock: clear VMA_LOCKED_MASK over mmap callback · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 22/38] mm/mlock: clear VMA_LOCKED_MASK over mmap callback · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 23/38] mm/mlock: eliminate weird VMA_IO_BIT abuse and simplify · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 23/38] mm/mlock: eliminate weird VMA_IO_BIT abuse and simplify · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 24/38] mm/vma: enforce that mm-managed mappings may not set VMA_IO_BIT · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 24/38] mm/vma: enforce that mm-managed mappings may not set VMA_IO_BIT · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 25/38] mm: remove VMA_IO_BIT check in vma[_flags]_is_mm_managed() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 25/38] mm: remove VMA_IO_BIT check in vma[_flags]_is_mm_managed() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 26/38] mm: remove hugetlb_inline.h · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 26/38] mm: remove hugetlb_inline.h · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 27/38] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 27/38] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 28/38] mm: drop some redundant checks around hugetlb VMAs · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 28/38] mm: drop some redundant checks around hugetlb VMAs · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 29/38] mm/madvise: update is_valid_guard_vma() to use vma_can_merge() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 29/38] mm/madvise: update is_valid_guard_vma() to use vma_can_merge() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 30/38] mm/vma: introduce vma[_flags]_is_mm_backed() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 30/38] mm/vma: introduce vma[_flags]_is_mm_backed() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 31/38] mm/uffd: use predicates for userfaultfd checks · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 31/38] mm/uffd: use predicates for userfaultfd checks · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 32/38] mm/madvise: use predicates for madvise(..., MADV_DOFORK) · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 32/38] mm/madvise: use predicates for madvise(..., MADV_DOFORK) · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 33/38] mm: eliminate VMA_SPECIAL_FLAGS usage when hugetlb explicitly tested · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 33/38] mm: eliminate VMA_SPECIAL_FLAGS usage when hugetlb explicitly tested · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 34/38] mm: eliminate VMA_SPECIAL_FLAGS check in lru_gen_look_around() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 34/38] mm: eliminate VMA_SPECIAL_FLAGS check in lru_gen_look_around() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 35/38] mm: avoid use of VMA_SPECIAL_FLAGS in migrate_vma_setup() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 35/38] mm: avoid use of VMA_SPECIAL_FLAGS in migrate_vma_setup() · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 36/38] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 36/38] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 37/38] fuse: dax: do not set VM_MIXEDMAP · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 37/38] fuse: dax: do not set VM_MIXEDMAP · sashiko-bot@kernel.org · 2026-10-03
[PATCH v4 38/38] mm/huge_memory: remove vma_is_special_huge() · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-10-03
Re: [PATCH v4 38/38] mm/huge_memory: remove vma_is_special_huge() · sashiko-bot@kernel.org · 2026-10-03

Re: [PATCH v4 08/38] docs: filesystems: update mmap_prepare docs for discontig kernel pgs

From: sashiko-bot@kernel.org
Date: 2026-10-03 17:56:35
Also in: bpf, dri-devel, kvm, kvmarm, linux-perf-users, linux-rdma, linux-s390, linux-scsi, selinux

Describe the newly introduced discontiguous kernel page mapping mechanism,
detailing how to use it sensibly and how the API looks.

Explicitly detail the various discontiguous actions available and how to
use them.

Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261003-b4-mmap-prepare-vma-flag-sanify-v4-0-a1f052500fd7@kernel.org?part=8

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