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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 v2 19/23] mm/vma: introduce vma_clear_flags[_mask]() Date: Mon, 16 Mar 2026 13:08:08 +0000 Message-ID: <397c67b154a4868e19db9be1012e976148901de2.1773665966.git.ljs@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Introduce a helper function and helper macro to easily clear a VMA's flags using the new vma_flags_t vma->flags field: * vma_clear_flags_mask() - Clears all of the flags in a specified mask in the VMA's flags field. * vma_clear_flags() - Clears all of the specified individual VMA flag bits in a VMA's flags field. Also update the VMA tests to reflect the change. Signed-off-by: Lorenzo Stoakes (Oracle) --- include/linux/mm.h | 16 ++++++++++++++++ tools/testing/vma/include/dup.h | 9 +++++++++ 2 files changed, 25 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index eb1cbb60e63b..4ba1229676ad 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1368,6 +1368,22 @@ static __always_inline void vma_set_flags_mask(struct vm_area_struct *vma, #define vma_set_flags(vma, ...) \ vma_set_flags_mask(vma, mk_vma_flags(__VA_ARGS__)) +/* Helper to clear all VMA flags in a VMA. */ +static __always_inline void vma_clear_flags_mask(struct vm_area_struct *vma, + vma_flags_t flags) +{ + vma_flags_clear_mask(&vma->flags, flags); +} + +/* + * Helper macro for clearing VMA flags, e.g.: + * + * vma_clear_flags(vma, VMA_IO_BIT, VMA_PFNMAP_BIT, VMA_DONTEXPAND_BIT, + * VMA_DONTDUMP_BIT); + */ +#define vma_clear_flags(vma, ...) \ + vma_clear_flags_mask(vma, mk_vma_flags(__VA_ARGS__)) + /* * Test whether a specific VMA flag is set in a VMA descriptor, e.g.: * diff --git a/tools/testing/vma/include/dup.h b/tools/testing/vma/include/dup.h index e68d3eb78178..1c4a58f11852 100644 --- a/tools/testing/vma/include/dup.h +++ b/tools/testing/vma/include/dup.h @@ -1063,6 +1063,15 @@ static __always_inline void vma_set_flags_mask(struct vm_area_struct *vma, #define vma_set_flags(vma, ...) \ vma_set_flags_mask(vma, mk_vma_flags(__VA_ARGS__)) +static __always_inline void vma_clear_flags_mask(struct vm_area_struct *vma, + vma_flags_t flags) +{ + vma_flags_clear_mask(&vma->flags, flags); +} + +#define vma_clear_flags(vmag, ...) \ + vma_clear_flags_mask(vmag, mk_vma_flags(__VA_ARGS__)) + static __always_inline bool vma_desc_test(const struct vm_area_desc *desc, vma_flag_t bit) { -- 2.53.0