[merged mm-stable] mm-vma-convert-vm_pgprot_modify-to-use-vma_flags_t-and-rename.patch removed from -mm tree

[merged mm-stable] mm-vma-convert-vm_pgprot_modify-to-use-vma_flags_t-and-rename.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/vma: convert vm_pgprot_modify() to use vma_flags_t and rename
has been removed from the -mm tree.  Its filename was
     mm-vma-convert-vm_pgprot_modify-to-use-vma_flags_t-and-rename.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Lorenzo Stoakes <ljs@kernel.org>
Subject: mm/vma: convert vm_pgprot_modify() to use vma_flags_t and rename
Date: Sat, 11 Jul 2026 19:45:03 +0100

Update vm_pgprot_modify() to use the new VMA flags type vma_flags_t
and rename to vma_pgprot_modify() accordingly.

This is part of the ongoing work to convert vm_flags_t to vma_flags_t, in
order to eliminate the arbitrary limit of the number of bits in a system
word on available VMA flags.

Update VMA userland tests accordingly, updating vma_set_page_prot() to no
longer inline vma_pgprot_modify(), rather we can simply define
vma_pgprot_modify() as a static inline function and the tests will pick it
up from vma.h.

No functional change intended.

Link: https://lore.kernel.org/20260711-b4-vma-flags-mm-v2-6-0fa2357d5431@kernel.org
Signed-off-by: Lorenzo Stoakes <ljs@kernel.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Dave Airlie <airlied@gmail.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nico Pache <npache@redhat.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/mmap.c |    8 ++++----
 mm/vma.c  |    2 +-
 mm/vma.h  |    6 ++++--
 3 files changed, 9 insertions(+), 7 deletions(-)

--- a/mm/mmap.c~mm-vma-convert-vm_pgprot_modify-to-use-vma_flags_t-and-rename
+++ a/mm/mmap.c
@@ -80,13 +80,13 @@ core_param(ignore_rlimit_data, ignore_rl
 /* Update vma->vm_page_prot to reflect vma->vm_flags. */
 void vma_set_page_prot(struct vm_area_struct *vma)
 {
-	vm_flags_t vm_flags = vma->vm_flags;
+	vma_flags_t vma_flags = vma->flags;
 	pgprot_t vm_page_prot;
 
-	vm_page_prot = vm_pgprot_modify(vma->vm_page_prot, vm_flags);
+	vm_page_prot = vma_pgprot_modify(vma->vm_page_prot, vma_flags);
 	if (vma_wants_writenotify(vma, vm_page_prot)) {
-		vm_flags &= ~VM_SHARED;
-		vm_page_prot = vm_pgprot_modify(vm_page_prot, vm_flags);
+		vma_flags_clear(&vma_flags, VMA_SHARED_BIT);
+		vm_page_prot = vma_pgprot_modify(vm_page_prot, vma_flags);
 	}
 	/* remove_protection_ptes reads vma->vm_page_prot without mmap_lock */
 	WRITE_ONCE(vma->vm_page_prot, vm_page_prot);
--- a/mm/vma.c~mm-vma-convert-vm_pgprot_modify-to-use-vma_flags_t-and-rename
+++ a/mm/vma.c
@@ -2176,7 +2176,7 @@ bool vma_wants_writenotify(struct vm_are
 	/* The open routine did something to the protections that pgprot_modify
 	 * won't preserve? */
 	if (pgprot_val(vm_page_prot) !=
-	    pgprot_val(vm_pgprot_modify(vm_page_prot, vma->vm_flags)))
+	    pgprot_val(vma_pgprot_modify(vm_page_prot, vma->flags)))
 		return false;
 
 	/*
--- a/mm/vma.h~mm-vma-convert-vm_pgprot_modify-to-use-vma_flags_t-and-rename
+++ a/mm/vma.h
@@ -541,9 +541,11 @@ static inline bool vma_wants_manual_pte_
 }
 
 #ifdef CONFIG_MMU
-static inline pgprot_t vm_pgprot_modify(pgprot_t oldprot, vm_flags_t vm_flags)
+static inline pgprot_t vma_pgprot_modify(pgprot_t oldprot, vma_flags_t vma_flags)
 {
-	return pgprot_modify(oldprot, vm_get_page_prot(vm_flags));
+	const pgprot_t prot = vma_get_page_prot(vma_flags);
+
+	return pgprot_modify(oldprot, prot);
 }
 #endif
 
_

Patches currently in -mm which might be from ljs@kernel.org are

x86-mm-pat-acquire-init_mm-write-lock-on-collapse-to-avoid-uaf.patch
x86-mm-pat-acquire-init_mm-read-lock-on-attribute-change-to-avoid-uaf.patch
x86-mm-pat-allocate-split-page-tables-as-kernel-page-tables.patch
mm-vma-introduce-vma-anon-page-offset-field-and-add-helpers.patch
mm-provide-vma_is_cow_mapping-and-remove-is_cow_mapping.patch
mm-introduce-linear_anon_page_index.patch
mm-abstract-vma_address-and-introduce-vma_anon_address.patch
mm-update-print_bad_page_map-to-show-anon-index-if-appropriate.patch
mm-introduce-and-use-vma_filebacked_address.patch
mm-vma-fix-self-merge-check-in-copy_vma.patch
tools-testing-vma-add-tests-for-copy_vma-self-merge.patch
mm-propagate-vma-anonymous-page-offset-on-map-remap-split-merge.patch
mm-rmap-track-whether-the-page-vma-mapped-pgoff-is-anonymous.patch
mm-clean-up-vma_address_end.patch
mm-huge_memory-update-remove_migration_pmd-to-accept-a-folio.patch
mm-migrate-calculate-large-folio-page-index-using-pfn.patch
mm-rmap-use-anon-pgoff-to-track-map_private-file-backed-anon-folios.patch
tools-testing-vma-expand-vma-merge-tests-to-assert-anon-pgoff.patch
tools-testing-selftests-mm-test-anonymous-page-offset-merge-behaviour.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-add-some-missing-includes-to-mm-local-headers.patch