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Thu, 20 Mar 2025 06:53:24 -0700 (PDT) Date: Thu, 20 Mar 2025 13:52:56 +0000 In-Reply-To: <20250320-vec-methods-v1-0-7dff5cf25fe8@google.com> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250320-vec-methods-v1-0-7dff5cf25fe8@google.com> X-Developer-Key: i=aliceryhl@google.com; a=openpgp; fpr=49F6C1FAA74960F43A5B86A1EE7A392FDE96209F X-Developer-Signature: v=1; a=openpgp-sha256; l=1241; i=aliceryhl@google.com; h=from:subject:message-id; bh=J0uC3aDL3oLj6YZnD9xA76IjEfmuaz3e24F5seLBKfg=; b=owEBbQKS/ZANAwAKAQRYvu5YxjlGAcsmYgBn3B3MjwY+fdJbvVjrUawAkOZzMIdMN+e8hxSVk TebQA0+IQCJAjMEAAEKAB0WIQSDkqKUTWQHCvFIvbIEWL7uWMY5RgUCZ9wdzAAKCRAEWL7uWMY5 RtSrD/4sBYp8utYA8ZOva763NUJsYY/WLMy59OqkHqFhV0FBql202y1DvBSZI0K0yBqq7zA4JlK 8OHMKL0PhAnRvPzlVRDdH0HS6B5GzJDCdnITvE/P0V2HXtut5GQWxQHm6AkUv2Kyq3aEC0CZoSK 05tBbHCsCfDtANwCjS39uuBIENsHAvFCrgyK32t/Ao4tZcQseyBAjTTkgEqE+CWIRkq0eCDm5qR TsVDL4WjDwrAXgaqZ4Cd9RzMKFgBhGnwpkNWi6V+c70++0dfzC/aos5McVCdX2F7csHRu9XzCHq 6UyCeVQPvuyOEK5ZEM2HucjVStBS0BSyNMPm0bT2GBQ5E4Y7SMEzsFl12UIYjO/VySKEug5fno0 yNi6NOkkyapNbuR3Gd8rjTOHz2qMIF0exSKcCruWVyDNj96YkI9cH8xl5KfWWxRCsRZ4g6SBrWa efVG2khzRkPEYqO6S6k/TzmVN5koopJ/guyvMLGzj+cMChhqJuKkgDAgCyO/Qf/XKBgHp+wFbPO HgVeullU+MoX8W2RG+YlKTUCZZ+ZwwlSvA+/FCHsOgl8u5PAr7F4pGMhXCHSSWgC0S2HlGdylGM fl+ePofFq3FicdePkeWL30j9Qp8OD3cuND0ffFIGLOkl97J3atWHiXrWMJkXNfMNYOEQW3q41VL iq7gfkf4AQT6jJg== X-Mailer: b4 0.14.2 Message-ID: <20250320-vec-methods-v1-1-7dff5cf25fe8@google.com> Subject: [PATCH 1/5] rust: alloc: add Vec::clear From: Alice Ryhl To: Danilo Krummrich Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Alice Ryhl Content-Type: text/plain; charset="utf-8" Our custom Vec type is missing the stdlib method `clear`, thus add it. It will be used in the miscdevice sample. Signed-off-by: Alice Ryhl --- rust/kernel/alloc/kvec.rs | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/rust/kernel/alloc/kvec.rs b/rust/kernel/alloc/kvec.rs index eb6d40a1bf8ba45126bd47f1dd4a7b7ef86112c4..95e752ed27395fce72d372976b74fb1b0e957194 100644 --- a/rust/kernel/alloc/kvec.rs +++ b/rust/kernel/alloc/kvec.rs @@ -395,6 +395,26 @@ pub fn into_raw_parts(self) -> (*mut T, usize, usize) { (ptr, len, capacity) } + /// Clears the vector, removing all values. + /// + /// Note that this method has no effect on the allocated capacity + /// of the vector. + /// + /// # Examples + /// + /// ``` + /// let mut v = kernel::kvec![1, 2, 3]?; + /// + /// v.clear(); + /// + /// assert!(v.is_empty()); + /// # Ok::<(), Error>(()) + /// ``` + #[inline] + pub fn clear(&mut self) { + self.truncate(0); + } + /// Ensures that the capacity exceeds the length by at least `additional` elements. /// /// # Examples -- 2.49.0.rc1.451.g8f38331e32-goog