From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1FDC420897E; Mon, 3 Feb 2025 15:10:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738595429; cv=none; b=ayAW7bYdCdCqqGxRxZZICMNYaLSRpxLopFXUz0r+7QFwBJtfefvuyfWs7T3b0zx4Nqe3Ud7r+eR65CHxJp33gF2mnZ04AvH7oxYXzIhtxv8PHkRfDZhYl7hrOKphjBDyeL2q3KGJgCL8BeRdhHqCka5PFQb6kb+RrWt91wDk8Jk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738595429; c=relaxed/simple; bh=J2HWkapAlDPb03vUi+fyTbxy9Aafi2wdXodrO3hGSEg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=tfiSalB/gkJLU5r2UJ9sOYcLBUaeCNjTxeRLhjWedkF7581paMB5Lkpbsosqtp3PZC8XxUdSw/C/SfrgmV101VkaWn25NYfkA0+LTOyYYn2HFQ66l6m2lkJ+RwzVsLHapEQSWVbqLknraJglU+NOlH1B0PF+e2bU530bmKUJ/vk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RfOyfWdX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RfOyfWdX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5EA19C4CED2; Mon, 3 Feb 2025 15:10:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738595428; bh=J2HWkapAlDPb03vUi+fyTbxy9Aafi2wdXodrO3hGSEg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=RfOyfWdXP68WZSbeS1/TVughysecDzQ+NBUm26QxVy5B/gRmEOZzlwSsgKy8qqdzI hWxNQtzLhWTOgq+Xzd/IgdRS/gExucdcU8rRzUo9BKV0wuXhfjKoaZLmzFJ/36n6hh ai1S21yeiMU1D5SRqAtmkO+4clVfOrMMYxGd6treW2e0zjY9jCbu9Gc5nzrrCg5bdN WBtmW2zZhHmdqVMbwQo8lWP/CXXw6W5fLimncN/uYV625xzVauQjT0IMHo0E2Y4LvC MHBRg2TsWrbd14MuxwyIOp4BPRMc03E20ZjsbvOL6xluz76lqBUcR0bn2dI1dYRxBo IVb7eSGU+xq+w== From: Andreas Hindborg Date: Mon, 03 Feb 2025 16:07:56 +0100 Subject: [PATCH v7 10/14] rust: alloc: add `Box::into_pin` Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250203-hrtimer-v3-v6-12-rc2-v7-10-189144725399@kernel.org> References: <20250203-hrtimer-v3-v6-12-rc2-v7-0-189144725399@kernel.org> In-Reply-To: <20250203-hrtimer-v3-v6-12-rc2-v7-0-189144725399@kernel.org> To: Miguel Ojeda , Anna-Maria Behnsen , Frederic Weisbecker , Thomas Gleixner , Danilo Krummrich Cc: Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Alice Ryhl , Trevor Gross , Lyude Paul , Guangbo Cui <2407018371@qq.com>, Dirk Behme , Daniel Almeida , Tamir Duberstein , rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Andreas Hindborg X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1082; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=J2HWkapAlDPb03vUi+fyTbxy9Aafi2wdXodrO3hGSEg=; b=owEBbQKS/ZANAwAIAeG4Gj55KGN3AcsmYgBnoNvXEsY5s7zwXQhuY+I3r7Qd31/OjS1dRfx6e 4uARiB3STuJAjMEAAEIAB0WIQQSwflHVr98KhXWwBLhuBo+eShjdwUCZ6Db1wAKCRDhuBo+eShj d6soD/9pY/y5DQzhpFj6Hd0wYDwa12Rw4UBMO7/xT+9XYfy36rDLKhtaqqVQJb4S/EzbiLFH23p pp8Twp2QuIBr61MZvQngUZf3ONYplWN68CwdaohOEsvmzvKNXgQ5PMkDBLPD3Cg8wvd5Ugx0y4x oVezjhOpmcyNiTYZwJqpQ6f4Q0hQ4Ff8PazBv9O9zWj02BnuTFJcbLHqMKtGu/Tm3Y4ffvpMj+S lYSuWkTimjtnTbhxelXPE4xh8cheFcJG/Oc3f9fY2XfbJcsb7dZxcSyPZTJUW/ORJSJt3adWfJX He/RLp4VlG0v8bwDs7bxSxFQddP6XiGQUcsZQQSxPQRq/6F4HMzB8I16IGxTmFH6xxSeCfWVYtp n98cEV65msdAP0H1dQpQAQPCZi+n+NiEmZ5GwKn4evaDbFjnNUrcMEDr+/tzhBmpJHcPPqt98OG sRMz5nuA6tSHRkw/Z4PGOrjlE305EVMYT1nCpCAjDF5qsyOUGAk71BoeDnEhMIWyCUDGyo4mWYa kLcz13iMESbckId3moTSBbnA+Rod2taSH5Efr0418AmdomN/tqKzCYvoxQYQTty0O5PdGkvkiIQ C93m6OPAjxRX5x/ho12AwTmfd3BVLHHXKTBEQKQ3fKVD3hSfBS81RJtuw/lRbOrUOhZW92V74AO vj5YsihPSrxr5Yg== X-Developer-Key: i=a.hindborg@kernel.org; a=openpgp; fpr=3108C10F46872E248D1FB221376EB100563EF7A7 Add an associated function to convert a `Box` into a `Pin>`. Acked-by: Danilo Krummrich Signed-off-by: Andreas Hindborg --- rust/kernel/alloc/kbox.rs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/rust/kernel/alloc/kbox.rs b/rust/kernel/alloc/kbox.rs index cb4ebea3b07422ca0f402512b7c66d66fd212042..9da4a32e60bc3fdfe88e595a38ecb9e3454e083f 100644 --- a/rust/kernel/alloc/kbox.rs +++ b/rust/kernel/alloc/kbox.rs @@ -245,6 +245,12 @@ pub fn pin(x: T, flags: Flags) -> Result>, AllocError> Ok(Self::new(x, flags)?.into()) } + /// Convert a [`Box`] to a [`Pin>`]. If `T` does not implement + /// [`Unpin`], then `x` will be pinned in memory and can't be moved. + pub fn into_pin(this: Self) -> Pin { + this.into() + } + /// Forgets the contents (does not run the destructor), but keeps the allocation. fn forget_contents(this: Self) -> Box, A> { let ptr = Self::into_raw(this); -- 2.47.0