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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 11/20] mm/vma: introduce [vma_flags,legacy]_to_[legacy,vma_flags]() helpers Date: Thu, 12 Mar 2026 19:16:09 +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: rspam01 X-Rspamd-Queue-Id: 0040410000E X-Stat-Signature: rzjq47qdka3swwjhgpeateaxkrjwrear X-Rspam-User: X-HE-Tag: 1773343021-370957 X-HE-Meta: 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 NhM+jZB4 +daOa90VYJC4vl8LqfSIBVGTo4im+a0+Q4pN5O78zK6KSxpOiup+eDEl/oD63fdyXHKtFk7Me/7ex9rME3opkhv7DRUfgV6TER4Hb6bu2d5q3+zhzkNrxjFBiz2WVSEtpgFxLpI7qIf9iwoZexCesGS1Lgu+2jbphxCPCrOfULAwKAUpcT0iHGx5L5CDCr4vV7yN9ORZ+rL882LvwiclZk4i9D4hgAgYojITS3iBsFDHNvAeXUMceAdHgXsqYzDgUXOhh3/g6tXxMuEOEgnM8DK0c/sT0fblW0wafF2qwhLHpBj00C7lCBsnGfYeNIZiTMt7xB5ykVFeuS3Fd9pAa7zGsK43KHhEaBaKd Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: While we are still converting VMA flags from vma_flags_t to vm_flags_t, introduce helpers to convert between the two to allow for iterative development without having to 'change the world' in a single commit'. Also update VMA flags tests to reflect the change. Signed-off-by: Lorenzo Stoakes (Oracle) --- include/linux/mm_types.h | 26 ++++++++++++++++++++++++++ tools/testing/vma/include/dup.h | 26 ++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index ea76821c01e3..63a25f97cd1c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -1069,6 +1069,32 @@ static __always_inline void vma_flags_clear_all(vma_flags_t *flags) bitmap_zero(flags->__vma_flags, NUM_VMA_FLAG_BITS); } +/* + * Helper function which converts a vma_flags_t value to a legacy vm_flags_t + * value. This is only valid if the input flags value can be expressed in a + * system word. + * + * Will be removed once the conversion to VMA flags is complete. + */ +static __always_inline vm_flags_t vma_flags_to_legacy(vma_flags_t flags) +{ + return (vm_flags_t)flags.__vma_flags[0]; +} + +/* + * Helper function which converts a legacy vm_flags_t value to a vma_flags_t + * value. + * + * Will be removed once the conversion to VMA flags is complete. + */ +static __always_inline vma_flags_t legacy_to_vma_flags(vm_flags_t flags) +{ + vma_flags_t ret; + + ret.__vma_flags[0] = (unsigned long)flags; + return ret; +} + /* * Copy value to the first system word of VMA flags, non-atomically. * diff --git a/tools/testing/vma/include/dup.h b/tools/testing/vma/include/dup.h index fa2df96f9dee..c27fcfb50d8d 100644 --- a/tools/testing/vma/include/dup.h +++ b/tools/testing/vma/include/dup.h @@ -800,6 +800,32 @@ static __always_inline void vma_flags_clear_all(vma_flags_t *flags) bitmap_zero(ACCESS_PRIVATE(flags, __vma_flags), NUM_VMA_FLAG_BITS); } +/* + * Helper function which converts a vma_flags_t value to a legacy vm_flags_t + * value. This is only valid if the input flags value can be expressed in a + * system word. + * + * Will be removed once the conversion to VMA flags is complete. + */ +static __always_inline vm_flags_t vma_flags_to_legacy(vma_flags_t flags) +{ + return (vm_flags_t)flags.__vma_flags[0]; +} + +/* + * Helper function which converts a legacy vm_flags_t value to a vma_flags_t + * value. + * + * Will be removed once the conversion to VMA flags is complete. + */ +static __always_inline vma_flags_t legacy_to_vma_flags(vm_flags_t flags) +{ + vma_flags_t ret; + + ret.__vma_flags[0] = (unsigned long)flags; + return ret; +} + static __always_inline void vma_flags_set_flag(vma_flags_t *flags, vma_flag_t bit) { -- 2.53.0