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Wed, 23 Apr 2025 06:54:39 -0700 (PDT) Received: from 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa ([2620:10d:c091:600::1:e2b6]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-47ae9cf9f7dsm68135461cf.74.2025.04.23.06.54.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Apr 2025 06:54:39 -0700 (PDT) From: Tamir Duberstein Subject: [PATCH v19 0/3] rust: xarray: Add a minimal abstraction for XArray Date: Wed, 23 Apr 2025 09:54:36 -0400 Message-Id: <20250423-rust-xarray-bindings-v19-0-83cdcf11c114@gmail.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIABzxCGgC/3XS224CIRAG4Fdp9roYZmAQeuV7NL3gqCS627JqN MZ3L9qD22y5nAl8/ANcujGWHMfu5enSlXjMYx76WoB5fur8xvbryHKojQ45SuDIWTmMe3aypdg zc7kPuV+PzMVEIEGiUbqrW99LTPl0d1/fap3KsGP7TYn2F+OCGxRkcLkApQ0QQ7bztrfbVV7bb bYLP+y+rRI/DjXa/gFu8rgfyvme+2hu3a+EAPr/hEfDOBMIxgdHQmlarXc2b++H3MAj8InSmrO uqoxFcui4S6RxxsCDQS5aDFSGtDUUQCyjnzM4YQBbDN4YY51xkGTAOGPElGmmEZXRigiUjAplm jFyyixbjKyMSTEJH5N3EmYM/TBUf5JqMXS/YnQUvPXWiRmjpkwzjaoMknLcJyOUCzNmOWGa36Z Oy1kS1hgwKpLQM0ZPGIQWoyvjnXWRQkhe/Hnw6/X6CaoQ6vOJAwAA X-Change-ID: 20241020-rust-xarray-bindings-bef514142968 To: Danilo Krummrich , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Matthew Wilcox , Bjorn Helgaas , Greg Kroah-Hartman , "Rafael J. Wysocki" , Tamir Duberstein , FUJITA Tomonori , "Rob Herring (Arm)" Cc: =?utf-8?q?Ma=C3=ADra_Canal?= , Asahi Lina , rust-for-linux@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org X-Mailer: b4 0.15-dev This is a reimagining relative to earlier versions[0] by Asahi Lina and Maíra Canal. It is needed to support rust-binder, though this version only provides enough machinery to support rnull. Link: https://lore.kernel.org/rust-for-linux/20240309235927.168915-2-mcanal@igalia.com/ [0] --- Changes in v19: - Rebase on v6.15-rc2. - Link to v18: https://lore.kernel.org/r/20250221-rust-xarray-bindings-v18-0-cbabe5ddfc32@gmail.com Changes in v18: - Add INVARIANT comment in `XArray::new`. (Danilo Krummrich) - Replace destructuring with field access in `impl From> for Error`. (Danilo Krummrich) - Use enumerations in SAFETY comments (3x). (Danilo Krummrich) - Link to v17: https://lore.kernel.org/r/20250218-rust-xarray-bindings-v17-0-f3a99196e538@gmail.com Changes in v17: - Drop patch "rust: remove redundant `as _` casts". (Danilo Krummrich) - Drop trailers for shared commit from configfs series[0]. (Danilo Krummrich) - Avoid shadowing expressions with .cast() calls. (Danilo Krummrich) - Link to v16: https://lore.kernel.org/r/20250207-rust-xarray-bindings-v16-0-256b0cf936bd@gmail.com Changes in v16: - Extract prequel patch for `as _` casts. (Danilo Krummrich) - Improve doc and safety comments. (Boqun Feng) - Pull trailers for shared commit from configfs series[0]. (Andreas Hindborg, Alice Ryhl, Fiona Behrens) - Link to configfs series: https://lore.kernel.org/rust-for-linux/20250131-configfs-v1-1-87947611401c@kernel.org/ - Link to v15: https://lore.kernel.org/r/20250206-rust-xarray-bindings-v15-0-a22b5dcacab3@gmail.com Changes in v15: - Rebase on v6.14-rc1. - Add MAINTAINERS entry. - Link to v14: https://lore.kernel.org/r/20241217-rust-xarray-bindings-v14-0-9fef3cefcb41@gmail.com Changes in v14: - Remove TODO made stale by Gary Guo's FFI type series. - Link: https://lore.kernel.org/all/20240913213041.395655-5-gary@garyguo.net/ - Link to v13: https://lore.kernel.org/r/20241213-rust-xarray-bindings-v13-0-8655164e624f@gmail.com Changes in v13: - Replace `bool::then` with `if`. (Miguel Ojeda) - Replace `match` with `let` + `if`. (Miguel Ojeda) - Link to v12: https://lore.kernel.org/r/20241212-rust-xarray-bindings-v12-0-59ab9b1f4d2e@gmail.com Changes in v12: - Import `core::ptr::NonNull`. (Alice Ryhl) - Introduce `StoreError` to allow `?` to be used with `Guard::store`. (Alice Ryhl) - Replace `{crate,core}::ffi::c_ulong` and clarify TODO with respect to `usize`. (Alice Ryhl) - Drop `T: Sync` bound on `impl Sync for XArray`. (Alice Ryhl) - Reword `Send` and `Sync` safety comments to match the style used in `lock.rs`. (Alice Ryhl and Andreas Hindborg) - Link to v11: https://lore.kernel.org/r/20241203-rust-xarray-bindings-v11-0-58a95d137ec2@gmail.com Changes in v11: - Consolidate imports. (Alice Ryhl) - Use literal `0` rather than `MIN`. (Alice Ryhl) - Use bulleted list in SAFETY comment. (Alice Ryhl) - Document (un)locking behavior of `Guard::store`. (Alice Ryhl) - Document Normal API behavior WRT `XA_ZERO_ENTRY`. (Alice Ryhl) - Rewrite `unsafe impl Sync` SAFETY comment. (Andreas Hindborg) - Link to v10: https://lore.kernel.org/r/20241120-rust-xarray-bindings-v10-0-a25b2b0bf582@gmail.com Changes in v10: - Guard::get takes &self instead of &mut self. (Andreas Hindborg) - Guard is !Send. (Boqun Feng) - Add Inspired-by tags. (Maíra Canal and Asahi Lina) - Rebase on linux-next, use NotThreadSafe. (Alice Ryhl) - Link to v9: https://lore.kernel.org/r/20241118-rust-xarray-bindings-v9-0-3219cdb53685@gmail.com --- Tamir Duberstein (3): rust: types: add `ForeignOwnable::PointedTo` rust: xarray: Add an abstraction for XArray MAINTAINERS: add entry for Rust XArray API MAINTAINERS | 11 ++ rust/bindings/bindings_helper.h | 6 + rust/helpers/helpers.c | 1 + rust/helpers/xarray.c | 28 ++++ rust/kernel/alloc/kbox.rs | 38 +++--- rust/kernel/lib.rs | 1 + rust/kernel/miscdevice.rs | 10 +- rust/kernel/pci.rs | 2 +- rust/kernel/platform.rs | 2 +- rust/kernel/sync/arc.rs | 21 +-- rust/kernel/types.rs | 46 ++++--- rust/kernel/xarray.rs | 275 ++++++++++++++++++++++++++++++++++++++++ 12 files changed, 392 insertions(+), 49 deletions(-) --- base-commit: 9d7a0577c9db35c4cc52db90bc415ea248446472 change-id: 20241020-rust-xarray-bindings-bef514142968 Best regards, -- Tamir Duberstein