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 5715520E32B; Fri, 7 Mar 2025 10:17:56 +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=1741342676; cv=none; b=FRkrfYdrJvOE49jRaMmeCsrekMWAOxXBT4N6PYKIOAVNyVb7+rU1ta1BloP5/kQuBxclWjIpX0uZutzyspIpITPOkf2/Umou3cIcPacKDhiHl0JXAnriJUZe7QRY5NAiYbosvNYrH5CU1OvF1hY1k9ZAnc75E3F9HtCRj4jcGGs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741342676; c=relaxed/simple; bh=Wo/kUAupEBOIsOdnruISz8EyJEcYwqNCGfSTf35FejE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=UHnNEElvCpVGv4N0zDGfjscO2tpZUK6kI2xNtNIWOUU4pY7qiw4dbAWjkfyi6DzKcwCu6vBH85Is3qW+TuBF4YykdjjHQamn/AFV77L1XNcm/l2rrJC6dv3/d3IrycchgJcFrfrV/6NYgn5lyJYYdCVAXYVnkLYrAWBBRM9TXTI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bvxRUljL; 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="bvxRUljL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A317AC4CEE5; Fri, 7 Mar 2025 10:17:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741342676; bh=Wo/kUAupEBOIsOdnruISz8EyJEcYwqNCGfSTf35FejE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=bvxRUljLuTdFdA96RJHJ6c8A2PwUkuOMQcFX7Ujd87y03mySuPUPH3tu2c2DVavhg lDqdR70HD3B7j30QJbM+kOZlu3jK9cNfqjLHQbcVQzZkifaJIiOW6uplmv5fOs4+IH lYQD2yHeI9nuQCnR2/G+iBn6TiCyZY78qigbwRheJlFY56I8Zf4Yo9kq5xfUQVI2a3 yzEnilFHe4tlGCPyR+hcmKdcBhAUkKPvdAxz+C1dtd0pFytIsd8NjrmpcRiISzK2AL Xym+BqxREi9LQFSi/2Fe8HiGwYlmiz6B2SDAYEUZnbbFvX0ycrYZ4GjJ22s7iJ1r1Y vSoPp76E7cUDA== From: Andreas Hindborg Date: Fri, 07 Mar 2025 11:11:54 +0100 Subject: [PATCH v10 09/13] rust: alloc: add `Box::into_pin` Precedence: bulk X-Mailing-List: linux-kernel@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: <20250307-hrtimer-v3-v6-12-rc2-v10-9-0cf7e9491da4@kernel.org> References: <20250307-hrtimer-v3-v6-12-rc2-v10-0-0cf7e9491da4@kernel.org> In-Reply-To: <20250307-hrtimer-v3-v6-12-rc2-v10-0-0cf7e9491da4@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 , Markus Elfring , 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=1122; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=Wo/kUAupEBOIsOdnruISz8EyJEcYwqNCGfSTf35FejE=; b=owEBbQKS/ZANAwAIAeG4Gj55KGN3AcsmYgBnysZ+zINI/2+NRgYaa3ReFo1WGs8Q9MM2IHhWZ 95z9nBsZWqJAjMEAAEIAB0WIQQSwflHVr98KhXWwBLhuBo+eShjdwUCZ8rGfgAKCRDhuBo+eShj d8tYD/9fPL+XND+jwp2KwS97M30WKcN7VpZfCHs5WCHeI/xqW4mV3gZSdduxpOWEVxuDX0lbnAd 4A1NkKNVEQhWhjVtM++wVptgu3hoWxFASLH7V80TVCQHArZstWqof2K3i93CZyt9oTCQy4MHsXh uHdn8f1gPrt7aVg09/SlVyhRK+szxwAR2WNlitMAf7cHWvQZtCNIw3p5dgzcAXGYLn2b0S2qkxB MqJ1DgD86JHpfk+DnfHY+8LO9kGJvsW0SVKzxqJi+0hJYMD6XkpNe0oguaUkgaykfhopeXrqoqH bGpOuQHiEXiY1qPKa5HRjya6a4giwa2HNYWDtvU84dlwn9v2/4lPTihXzax8mcsoiDblnkwCGW6 LjJiQsoRBaDtHvYPcei6C9Q1TzuIhp2t7kkdeW/um1GySJ0dM7sNsVVJ9R+Jcm5viv6+jfuaDeC uOMLfnV20dLvzurce2f0/Po7wvvH8FTUQxqH6q027LYkcJltwsjTHa7QvrKHv4VBfs15QiMkmwK 9YmIcjRA5Pr8g6MTkxYUuqDA+A80X25elmdoXlJtcCgVLrsZk2IB8wrcsK+CstzLsczjbm46MCm b4hxQVKgJcvnrXhkjZTN7nvYKsTvBxwpr6kMENSB59tX9HYQ59rrCQ9mmIX9gG3IuRb00szJS45 HTpUhbQEN7rA51g== 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 Reviewed-by: Benno Lossin Reviewed-by: Lyude Paul 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 cb4ebea3b074..9da4a32e60bc 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