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 7861A270EB2; Tue, 18 Feb 2025 13:29:18 +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=1739885358; cv=none; b=hEJceVpDQRGwJMNfcIFcFCqlaJeMI1sJfSMdr8y1ngoazPueQwXIoZAUxSY6/cte5NdfE1FiJjTwFTZhSOB+LKTp+Z1wiUvzUWXKIybIyIj4F+CRHorpzJ2Mk5mJq7DMVzZd9Z0GEKKoENqYCGm8/xylg4rVUteQKbZUebGXzTY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739885358; c=relaxed/simple; bh=nwZNyOuiuprl7SMNik85pXwE5CG7wJ0i0TbeV7CGEdQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OUJd5sNAnWUiBw/X5LcsznBzl8q03p9+N467pRKPYpNNd5cUb1sI4rTBFJnnE5xeB9RV8XOk2RzsdfsW/wm/btbF2+nJ6JkKUO3ZeTD9SUh1CiufrviBnI1MmPRnBJqeWzb+LwGKz9HyrLgD8aJBCWCeP6oVdwgxFomvYRSCQRE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JoXYkXxP; 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="JoXYkXxP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A8431C4CEE8; Tue, 18 Feb 2025 13:29:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739885357; bh=nwZNyOuiuprl7SMNik85pXwE5CG7wJ0i0TbeV7CGEdQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=JoXYkXxPyMu3iy5hwEg66jQ6u0cvQTiSiJLVOaO+PIA14hlaiVxbc6p/EX9hiJoQo ZjG6fOEGbRfKdaBR4hf0l6+gQWmAomsMdwvUc5TB9t1W8KmYmJqjjC6gvIC8Q0mIyv CmJNTvZ7qyRsRoeIhg3gNNWoLFyBu2AJh3XAWeTi2rK+MFaIavzeet/uTdiE8X9Cap T1yx5pW7cZq/XffY+a/8ItjRkmDlU8mxYeDnSZvQYebe+wClJz1+Of5Nb8BLULHyTO /oOBiTQ9xIZbZdd3nD5qsXsG5SOZ2Iro8YMfnbZ2huOpq76hMQtUCH18eoqJr+I079 W+CCrTjrlks/Q== From: Andreas Hindborg Date: Tue, 18 Feb 2025 14:27:15 +0100 Subject: [PATCH v8 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: <20250218-hrtimer-v3-v6-12-rc2-v8-10-48dedb015eb3@kernel.org> References: <20250218-hrtimer-v3-v6-12-rc2-v8-0-48dedb015eb3@kernel.org> In-Reply-To: <20250218-hrtimer-v3-v6-12-rc2-v8-0-48dedb015eb3@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=1028; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=nwZNyOuiuprl7SMNik85pXwE5CG7wJ0i0TbeV7CGEdQ=; b=owEBbQKS/ZANAwAIAeG4Gj55KGN3AcsmYgBntIq4n7RTCoXhS7u6DlebG7p92eiZABT4YHP5x 7oX1G8mO2OJAjMEAAEIAB0WIQQSwflHVr98KhXWwBLhuBo+eShjdwUCZ7SKuAAKCRDhuBo+eShj d4DVEACCRkXBowHgAhVf9vblwxpFJ08MKHX/n5XuydtczVTxeVxJy0PzSJc6vzvHwmlLa16KeIi IST+3WPFNSsMi9IlgjelLF7w7qBS94ohS9uiQgX9B5HZmUUEvYaQzqfkiNcLhu3A/bw9RlSY4il TD+OErdZnCd3t8oZ4PcfpIhVozWT7HCYHvkk5hOVaS7fKCfA1AVxcXWOcYq+Y7+U1k59qGybvyj Zy2Xta4gNKKzXoezfFipFcoUDbI1J/1WXOgV/uVPzO3EqRxzeHuVAgdiA2fbhHUbbMncPft/XYD yYWZfElKrlfZ4n52aLGp3AqaD/QB8g2+15f1Bac8LSvL5mrFXJJCpIvndzhrhuTutHxfjvTAokd 3108VGr4YHqYXD7Q4P2yZko0z7AC6zPDgg27u+9HxGiIQsk07ogbRnYHNUQJwBX3K9CfxXVl3P9 jCW2DPFzlNGKynpyyvM8eGyatjyfPEldA4MvJnlZGbRhfTv0RO5/2gsC20Ls/+ZYxE0Uij3MSbB t2IA4RyIWw87+EORCGNtRX6WZujuWxuus022vM9qaOS79zB3S/9WGo/3S9AFMjWbCcFGmuEosfd j5RRCDdHXVmFbiMsLFZMiJRFo702xNyHGNXePui3Z30rqLRlGmqdte3kSEL+iQRYnMtNcz4mEzq s67gzzN+BwyDzKg== 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 cb4ebea3b0742..9da4a32e60bc3 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