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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 11/23] mm/vma: introduce [vma_flags,legacy]_to_[legacy,vma_flags]() helpers Date: Mon, 16 Mar 2026 13:08:00 +0000 Message-ID: <19cfb4297cb691dc16c75e9e6a24f6564743407e.1773665966.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-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: BEEB7180012 X-Stat-Signature: dby6hax9e93by7jjbfgzoicsqqyzkexe X-HE-Tag: 1773666566-541480 X-HE-Meta: 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 Bm0z6LMN A5V4+JRL4UeBkI8EmOI41QAYLRzb7qxaSze9jrawfk2zCbrSAzF4BdENW0yHLip4qAi7biTt2WAF2fznHpLgjG37GLQtn/MwqvmDHxG+lCj6sLSLqQVgmWtA7MVOBReri318iZHpf7mSR+EiI82qCRM8VGG4n/ZlFjiNPqgiMGdiOgq6pvKvvWkx18rBV0weRIyNy0B5HmdVvadncb/t71IsDWqXIXSgaNMEPWgrYx1POIrEsvV1qr11CyYtdIVRkoXe0Keta22d7ECgxFCzNg4Avrb90rJ6hB5Mk5H2QLcjGSLo4swS9/CGIM6kWx7ee/AStH8iLpayAKm9lvru96kfYvi6j1ibyzkLp 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 29a6f62b01db..7c22aeb736e6 100644 --- a/tools/testing/vma/include/dup.h +++ b/tools/testing/vma/include/dup.h @@ -803,6 +803,32 @@ 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