linux.git/tools/testing/vma/include, branch master

mm/vma: update create_init_stack_vma() to use vma_flags_t

2026-08-07T01:57:03+00:00

Replace use of the legacy vm_flags_t flags with vma_flags_t values in
create_init_stack_vma().

As part of this change we add VMA_STACK_EARLY and VMA_STACK_INCOMPLETE
vma_flags_t defines, and slightly rework create_init_stack_vma() for
clarity.

No functional change intended.

Link: https://lore.kernel.org/20260711-b4-vma-flags-mm-v2-9-0fa2357d5431@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Zi Yan 
Reviewed-by: Lance Yang 
Reviewed-by: Vlastimil Babka (SUSE) 
Cc: Baolin Wang 
Cc: Barry Song 
Cc: Christian Brauner 
Cc: Dave Airlie 
Cc: David Hildenbrand 
Cc: Dev Jain 
Cc: Jani Nikula 
Cc: Jan Kara 
Cc: Jann Horn 
Cc: Mike Rapoport 
Cc: Muchun Song 
Cc: Nico Pache 
Cc: Oscar Salvador 
Cc: Pedro Falcato 
Cc: Suren Baghdasaryan 
Cc: Thomas Zimmermann 
Signed-off-by: Andrew Morton

mm: introduce vma_get_page_prot() and use it

2026-08-07T01:57:03+00:00

There's a large number of vm_get_page_prot(vma->vm_flags) invocations. 
Make life easier by introducing vma_get_page_prot() parameterised by the
VMA.

This also makes converting vm_get_page_prot() to vma_flags_t easier.

Also update the userland VMA tests to reflect the change.

No functional change intended.

Link: https://lore.kernel.org/20260711-b4-vma-flags-mm-v2-8-0fa2357d5431@kernel.org
Signed-off-by: Lorenzo Stoakes 
Acked-by: Zi Yan 
Acked-by: Jani Nikula  # for i915
Reviewed-by: Thomas Zimmermann 	[DRM]
Reviewed-by: Vlastimil Babka (SUSE) 
Cc: Baolin Wang 
Cc: Barry Song 
Cc: Christian Brauner 
Cc: Dave Airlie 
Cc: David Hildenbrand 
Cc: Dev Jain 
Cc: Jan Kara 
Cc: Jann Horn 
Cc: Lance Yang 
Cc: Mike Rapoport 
Cc: Muchun Song 
Cc: Nico Pache 
Cc: Oscar Salvador 
Cc: Pedro Falcato 
Cc: Suren Baghdasaryan 
Signed-off-by: Andrew Morton

mm/vma: rename vma_get_page_prot to vma_flags_to_page_prot

2026-08-07T01:57:02+00:00

Having vma_get_page_prot() refer to VMA flags and vma_set_page_prot()
refer to a VMA is confusing.

Rename vma_get_page_prot() to vma_flags_to_page_prot() to resolve this
confusion.

No functional change intended.

Link: https://lore.kernel.org/20260711-b4-vma-flags-mm-v2-7-0fa2357d5431@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Lance Yang 
Reviewed-by: Zi Yan 
Reviewed-by: Vlastimil Babka (SUSE) 
Cc: Baolin Wang 
Cc: Barry Song 
Cc: Christian Brauner 
Cc: Dave Airlie 
Cc: David Hildenbrand 
Cc: Dev Jain 
Cc: Jani Nikula 
Cc: Jan Kara 
Cc: Jann Horn 
Cc: Mike Rapoport 
Cc: Muchun Song 
Cc: Nico Pache 
Cc: Oscar Salvador 
Cc: Pedro Falcato 
Cc: Suren Baghdasaryan 
Cc: Thomas Zimmermann 
Signed-off-by: Andrew Morton

mm/vma: introduce vma_assert_can_modify()

2026-08-05T02:19:01+00:00

vma_assert_write_locked() and vma_assert_attached() are useful for their
own purposes, however VMA code absolutely does allow the modification of
non-write locked VMAs if they are at that point detached (i.e. unreachable
from anywhere).

It's therefore useful to be able to assert that a VMA is either
detached (modification doesn't matter) or write locked (you're explicitly
locked for modification).

Therefore introduce vma_assert_can_modify() for this purpose.

While we're here, make vma_is_attached() available generally - if
!CONFIG_PER_VMA_LOCK, then there's no sense in which a VMA is
detached (vma_mark_detached() is a noop), so have this default to true in
this case.

Also update VMA userland tests to reflect this change, correcting the
previously open-coded vma_assert_[attached,detached]() there.

Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-22-2a5aa403d977@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Gregory Price 
Reviewed-by: Vlastimil Babka (SUSE) 
Cc: Ackerley Tng 
Cc: David Hildenbrand (Arm) 
Cc: Kai Huang 
Cc: Marek Szyprowski 
Cc: Pedro Falcato 
Cc: SJ Park 
Cc: Thomas Zimmermann 
Cc: Liam R. Howlett (Oracle) 
Cc: Zi Yan 
Signed-off-by: Andrew Morton

mm/vma: remove duplicative vma_pgoff_offset() helper

2026-08-05T02:19:01+00:00

This is doing what linear_page_index() does, so eliminate it and replace it
with linear_page_index().

Update the VMA userland tests to reflect this change.

No functional change intended.

Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-20-2a5aa403d977@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Pedro Falcato 
Reviewed-by: Gregory Price 
Reviewed-by: Vlastimil Babka (SUSE) 
Cc: Ackerley Tng 
Cc: David Hildenbrand (Arm) 
Cc: Kai Huang 
Cc: Marek Szyprowski 
Cc: SJ Park 
Cc: Thomas Zimmermann 
Cc: Liam R. Howlett (Oracle) 
Cc: Zi Yan 
Signed-off-by: Andrew Morton

mm/rmap: rename anon_vma_interval_tree_() to anon_rmap_tree_()

2026-08-05T02:18:58+00:00

To be consistent with the newly renamed mapping_rmap_tree_*(), rename the
anon_vma_interval_tree_*() helpers to anon_rmap_tree_*().

No functional change intended.

Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-11-2a5aa403d977@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Gregory Price 
Reviewed-by: Vlastimil Babka (SUSE) 
Reviewed-by: Zi Yan 
Cc: Ackerley Tng 
Cc: David Hildenbrand (Arm) 
Cc: Kai Huang 
Cc: Marek Szyprowski 
Cc: Pedro Falcato 
Cc: SJ Park 
Cc: Thomas Zimmermann 
Cc: Liam R. Howlett (Oracle) 
Signed-off-by: Andrew Morton

mm/rmap: parameterise anon_vma_interval_tree_*() by anon_vma

2026-08-05T02:18:58+00:00

Similar to what we did with mapping_rmap_tree*(), let's declare
anon_vma_interval_tree*() in terms of anon_vma rather than rb_root_cached.

In each case the rb tree referenced is &anon_vma->rb_root, so just pass
anon_vma and the functions can figure this out themselves.

Also update the VMA userland tests to reflect the change.

No functional change intended.

Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-9-2a5aa403d977@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Pedro Falcato 
Reviewed-by: Gregory Price 
Reviewed-by: Vlastimil Babka (SUSE) 
Reviewed-by: Zi Yan 
Cc: Ackerley Tng 
Cc: David Hildenbrand (Arm) 
Cc: Kai Huang 
Cc: Marek Szyprowski 
Cc: SJ Park 
Cc: Thomas Zimmermann 
Cc: Liam R. Howlett (Oracle) 
Signed-off-by: Andrew Morton

mm/rmap: rename vma_interval_tree_() to mapping_rmap_tree_()

2026-08-05T02:18:58+00:00

The family of vma_interval_tree_() functions manipulate the
address_space (which, of course, is generally referred to as 'mapping')
reverse mapping, but are named the 'VMA' interval tree.

VMAs may be mapped by an anon_vma, an address_space, or both. Therefore
calling the mapping interval tree a 'VMA' interval tree is rather
confusing.

This is also inconsistent with the anon_vma_interval_tree_*() functions
which explicitly reference the rmap object to which they pertain.

Rename the vma_interval_tree_*() functions to mapping_rmap_tree_*() to
correct this.

We will rename the anon rmap functions similarly in a subsequent patch.

No functional change intended.

Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-8-2a5aa403d977@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Gregory Price 
Reviewed-by: Vlastimil Babka (SUSE) 
Reviewed-by: Zi Yan 
Cc: Ackerley Tng 
Cc: David Hildenbrand (Arm) 
Cc: Kai Huang 
Cc: Marek Szyprowski 
Cc: Pedro Falcato 
Cc: SJ Park 
Cc: Thomas Zimmermann 
Cc: Liam R. Howlett (Oracle) 
Signed-off-by: Andrew Morton

mm/rmap: parameterise vma_interval_tree_*() by address_space

2026-08-05T02:18:57+00:00

The file-backed mapping interval tree functions vma_interval_tree_*()
accept a raw rb_root_cached pointer to determine the tree in which they are
operating.

However, in each case, this is always associated with an address_space data
type.

So simply pass a pointer to that instead to simplify the code, and more
clearly differentiate between these operations and those concerning
anonymous mappings.

While we're here, make the generated interval tree functions static as they
do not need to be used externally (any previously existing external users
have now been removed).

We also rename VMA parameters from 'node' to 'vma' as calling this a node
is simply confusing, update the input index types to pgoff_t since they
reference page offsets and rename the parameters to pgoff_start and
pgoff_last.

No functional change intended.

Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-6-2a5aa403d977@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Pedro Falcato 
Reviewed-by: Gregory Price 
Reviewed-by: Vlastimil Babka (SUSE) 
Reviewed-by: Zi Yan 
Cc: Ackerley Tng 
Cc: David Hildenbrand (Arm) 
Cc: Kai Huang 
Cc: Marek Szyprowski 
Cc: SJ Park 
Cc: Thomas Zimmermann 
Cc: Liam R. Howlett (Oracle) 
Signed-off-by: Andrew Morton

mm: introduce and use vma_end_pgoff()

2026-08-05T02:18:56+00:00

We already have vma_last_pgoff() which retrieves the last page offset
within a VMA.

However, code often wishes to span a page offset range, which requires the
exclusive end of this range.

So provide this in vma_end_pgoff() and update vma_last_pgoff() to use this
function.

Also update the VMA userland tests to reflect the change.

No functional change intended.

Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-4-2a5aa403d977@kernel.org
Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Gregory Price 
Reviewed-by: Pedro Falcato 
Reviewed-by: Vlastimil Babka (SUSE) 
Reviewed-by: Zi Yan 
Cc: Ackerley Tng 
Cc: David Hildenbrand (Arm) 
Cc: Kai Huang 
Cc: Marek Szyprowski 
Cc: SJ Park 
Cc: Thomas Zimmermann 
Cc: Liam R. Howlett (Oracle) 
Signed-off-by: Andrew Morton

linux.git/tools/testing/vma/include, branch master

mm/vma: update create_init_stack_vma() to use vma_flags_t

mm: introduce vma_get_page_prot() and use it

mm/vma: rename vma_get_page_prot to vma_flags_to_page_prot

mm/vma: introduce vma_assert_can_modify()

mm/vma: remove duplicative vma_pgoff_offset() helper

mm/rmap: rename anon_vma_interval_tree_*() to anon_rmap_tree_*()

mm/rmap: parameterise anon_vma_interval_tree_*() by anon_vma

mm/rmap: rename vma_interval_tree_*() to mapping_rmap_tree_*()

mm/rmap: parameterise vma_interval_tree_*() by address_space

mm: introduce and use vma_end_pgoff()

mm/rmap: rename anon_vma_interval_tree_() to anon_rmap_tree_()

mm/rmap: rename vma_interval_tree_() to mapping_rmap_tree_()