From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ACF53E9B24E for ; Tue, 24 Feb 2026 11:20:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1346610E565; Tue, 24 Feb 2026 11:20:46 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="FnD6iV9K"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6904510E567 for ; Tue, 24 Feb 2026 11:20:44 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id DA3306132D; Tue, 24 Feb 2026 11:20:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A8595C2BC86; Tue, 24 Feb 2026 11:20:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771932043; bh=jLcwJmCU6NuD58W2dvDRqr7xKpNKXDGKLW9pDqZ3mBg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=FnD6iV9K9NZ7mJJSAL00XOjIPTg6UsieDGlm3jaXgSc4Rc9rMU8mCbbe0Ub0QU04s j+XA7mBrzuVEuqRfQI92KsNlua/cpKJgCXIE8vr6AZo0jhnoNhVLUoWlWaAfplH4CX T5sAiTOh3WoLzwRvaEg5Hlr+AzFOgVnxNtBg8DyOwJeF38TDShZKCUIt4HUXRybDpW R/l7zwbU3DLkv6fDnzGUcBYSBRH3Eu5wt2beNLcG/kisJ4dWaJfnvuLRpJeRdFTgfv ylStit7gCo0yNJCiejtjQZi34htmpdrmCKcOiapJ3ywb88WPPGD50uHtZIJnTb+Acb HTH87pF60sZqQ== From: Andreas Hindborg Date: Tue, 24 Feb 2026 12:17:56 +0100 Subject: [PATCH v16 01/10] rust: alloc: add `KBox::into_nonnull` MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260224-unique-ref-v16-1-c21afcb118d3@kernel.org> References: <20260224-unique-ref-v16-0-c21afcb118d3@kernel.org> In-Reply-To: <20260224-unique-ref-v16-0-c21afcb118d3@kernel.org> To: Miguel Ojeda , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Alice Ryhl , Trevor Gross , Danilo Krummrich , Greg Kroah-Hartman , Dave Ertman , Ira Weiny , Leon Romanovsky , Paul Moore , Serge Hallyn , "Rafael J. Wysocki" , David Airlie , Simona Vetter , Alexander Viro , Christian Brauner , Jan Kara , Igor Korotin , Daniel Almeida , Lorenzo Stoakes , "Liam R. Howlett" , Viresh Kumar , Nishanth Menon , Stephen Boyd , Bjorn Helgaas , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Boqun Feng , Vlastimil Babka , Uladzislau Rezki , Boqun Feng Cc: linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-block@vger.kernel.org, linux-security-module@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-pm@vger.kernel.org, linux-pci@vger.kernel.org, Andreas Hindborg X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1062; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=jLcwJmCU6NuD58W2dvDRqr7xKpNKXDGKLW9pDqZ3mBg=; b=owEBbQKS/ZANAwAKAeG4Gj55KGN3AcsmYgBpnYj0TV4DAv2lVFJSr3recsWpK7mpdMvf0fOO4 GsqOYqcl7SJAjMEAAEKAB0WIQQSwflHVr98KhXWwBLhuBo+eShjdwUCaZ2I9AAKCRDhuBo+eShj dxXvD/4uTFSqjCY3iWHRTIEAh2NylxI+XqsaQVjNHfa55ZJJLgTNfYUvcse4RyQozv7pvyVWd9X RTV+xLwmBnbBtZhV/uwmF8F2kvjU113KJpO3sMatO2yNc358Ve7JZhap3nzmvf689b+moR9KW8U 8ifp9shwqd9GxSnUqYmJQww4ytW7n6vmrS9fdCG0VpncaoHbclEqKrb8kHlDpPWubp6c+Qu+ywV ZSm0AOEF5voLr6yFpDRkglqwU7L54LiXgfITkIb6UbNJrDRXOO57QGjUnybgV9oIPGKKkwQwRZQ uZX42y2zKXJNwE7e0PtSQh/G9iJSeO6OlIl3XlsH9/nwxhmAe99bikE2XWCyvXsybp6xdn8BHKc r54RW+VeOtJ8HA3/xoWs07B2k0WCCDEs5APzVEAOAAzVtB0PabBsu+U6ama860OueMRxHOILlcZ +Xf+pOsN30kSX9dsaxnpoC6hcm2hPWPJL/HaytSlHURknmIo6ZknstZlgrOJ6sPfuOgZPJ9KatI nzNP0Z3U5LkY0BatvObNNaHXd8Ke66SruMP3igQJaaJm0DeDpUNWuOdkv9+3giycXGQXpdPIHCt lQVZzP3lDsyullj2okwbZRVi01SEBePzKduMTuRLyTs6JjpW7tCsxzzCAC0M5H7le096T5lOwCQ cYxZVgcHcuck6nQ== X-Developer-Key: i=a.hindborg@kernel.org; a=openpgp; fpr=3108C10F46872E248D1FB221376EB100563EF7A7 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a method to consume a `Box` and return a `NonNull`. This is a convenience wrapper around `Self::into_raw` for callers that need a `NonNull` pointer rather than a raw pointer. Signed-off-by: Andreas Hindborg --- rust/kernel/alloc/kbox.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/rust/kernel/alloc/kbox.rs b/rust/kernel/alloc/kbox.rs index 622b3529edfcb..e6efdd572aeea 100644 --- a/rust/kernel/alloc/kbox.rs +++ b/rust/kernel/alloc/kbox.rs @@ -213,6 +213,14 @@ pub fn leak<'a>(b: Self) -> &'a mut T { // which points to an initialized instance of `T`. unsafe { &mut *Box::into_raw(b) } } + + /// Consumes the `Box` and returns a `NonNull`. + /// + /// Like [`Self::into_raw`], but returns a `NonNull`. + pub fn into_nonnull(b: Self) -> NonNull { + // SAFETY: `KBox::into_raw` returns a valid pointer. + unsafe { NonNull::new_unchecked(Self::into_raw(b)) } + } } impl Box, A> -- 2.51.2