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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 03/20] mm/vma: add further vma_flags_t unions Date: Thu, 12 Mar 2026 19:16:01 +0000 Message-ID: X-Mailer: git-send-email 2.53.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: B57402000E X-Stat-Signature: pi4j5joz1sjocse8a7x1uzk63j5cb4a8 X-Rspam-User: X-HE-Tag: 1773343002-219708 X-HE-Meta: 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 oCL9wR1n NMj69GdSFQFp5KetxHsC0qz++XLBghOeRezXjWyVnZE1U5wUDRtk2YTefaFw1nexxfE5uFgNCUbJsiecUb2ttxcvHndzBkoq8HNchjTLN4kfF929Y3ghxrfH8v2w9lb3etKzduxIBck2HnHWNTLi8c9zFdy5xL7DjEnmugpgiDsZEDDXBNBNQGI80BxjcspUYIyJYIQ5xwat5QBBSjNcVLRqK6rFMZuGpZap26T4YwsQooNQbfWw7sYkk+F7H15wfOjAOqLLW7rUN52dfFA7y7gxIifgEOBLxivCondx+QufuNZ4ehskyPE9XCa9N/g+g2lrGySeJtAQSaJd+jDw+iJxlJhN14rO0yaLL 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. 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 ad414ff2d815..ea76821c01e3 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 2f53c27ddb21..faaf1239123d 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