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Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , Mike Rapoport , Suren Baghdasaryan , Kees Cook , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vineet Gupta , Russell King , Catalin Marinas , Will Deacon , Brian Cain , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , Dinh Nguyen , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , Richard Weinberger , Anton Ivanov , Johannes Berg , Alexander Viro , Christian Brauner , Jan Kara , Xu Xin , Chengming Zhou , Michal Hocko , Paul Moore , Stephen Smalley , Ondrej Mosnacek , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-fsdevel@vger.kernel.org, selinux@vger.kernel.org Subject: [PATCH v3 03/23] mm/vma: add further vma_flags_t unions Date: Wed, 18 Mar 2026 15:50:14 +0000 Message-ID: <6a2c2cfa2e0c1582647c39eb427f2aa53357e97e.1773846935.git.ljs@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 71D6480009 X-Stat-Signature: jcitw781zaduhwa8egwc5za1bkeeeqag X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1773849049-743782 X-HE-Meta: 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 1XGZV1AE NiGXQ7+3wAQOSko8E5jNdV1XfswIXe58W+vuZcN8UqrtlWmRp7XN1+XvyYy7tS7ksJ4S+uG/FY/ouUTl6zXReaAOosIcxjOnQAvqx4mwiwO71Eks4yo9Tl5I+r8DkQnvI7ahaigHDeR31kPzOFAfqIPv1BNF0CcoFRHiaGYnNR76df2xw7Ij/g4dDojsd4GIya1ELz6CVw4BQpf0ZIbq7OFcqu7U7PgK13KHM14ex1+SPjQ0txtzQLHXmo1fvZJyZMDpiGZsWTL/A3EUsuxk+EU6ikBoN+umjpV89CbsiAi1tVVbmMrza6mh17cBsepAlVh8cWWqC9tW2sS2wKXITL6Ds6S+EcR0NJwn1 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: In order to utilise the new vma_flags_t type, we currently place it in union with legacy vm_flags fields of type vm_flags_t to make the transition smoother. Add vma_flags_t union entries for mm->def_flags and vmg->vm_flags - mm->def_vma_flags and vmg->vma_flags respectively. Once the conversion is complete, these will be replaced with vma_flags_t entries alone. Also update the VMA tests to reflect the change. Acked-by: Vlastimil Babka (SUSE) Signed-off-by: Lorenzo Stoakes (Oracle) --- include/linux/mm_types.h | 6 +++++- mm/vma.h | 6 +++++- tools/testing/vma/include/dup.h | 5 ++++- 3 files changed, 14 insertions(+), 3 deletions(-) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 5584a0c7bcea..47d64057b74c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -1262,7 +1262,11 @@ struct mm_struct { unsigned long data_vm; /* VM_WRITE & ~VM_SHARED & ~VM_STACK */ unsigned long exec_vm; /* VM_EXEC & ~VM_WRITE & ~VM_STACK */ unsigned long stack_vm; /* VM_STACK */ - vm_flags_t def_flags; + union { + /* Temporary while VMA flags are being converted. */ + vm_flags_t def_flags; + vma_flags_t def_vma_flags; + }; /** * @write_protect_seq: Locked when any thread is write diff --git a/mm/vma.h b/mm/vma.h index eba388c61ef4..cf8926558bf6 100644 --- a/mm/vma.h +++ b/mm/vma.h @@ -98,7 +98,11 @@ struct vma_merge_struct { unsigned long end; pgoff_t pgoff; - vm_flags_t vm_flags; + union { + /* Temporary while VMA flags are being converted. */ + vm_flags_t vm_flags; + vma_flags_t vma_flags; + }; struct file *file; struct anon_vma *anon_vma; struct mempolicy *policy; diff --git a/tools/testing/vma/include/dup.h b/tools/testing/vma/include/dup.h index 8091a5caaeb8..58e063b1ee27 100644 --- a/tools/testing/vma/include/dup.h +++ b/tools/testing/vma/include/dup.h @@ -33,7 +33,10 @@ struct mm_struct { unsigned long exec_vm; /* VM_EXEC & ~VM_WRITE & ~VM_STACK */ unsigned long stack_vm; /* VM_STACK */ - unsigned long def_flags; + union { + vm_flags_t def_flags; + vma_flags_t def_vma_flags; + }; mm_flags_t flags; /* Must use mm_flags_* helpers to access */ }; -- 2.53.0