From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 23F0C480DE3; Tue, 4 Aug 2026 19:53:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785873211; cv=none; b=Ilic3qHwxyn8cN54rmgV44yH0P3fVEXfPfnTHg4ILcA+VD2KRncALnMl0pxfTuPY/3C6rScs/jQ5wZKMS6zoNS9cCs2OcqVQodcS6ZsIitdwhIBoRE6KHxwnuqsN0tBwRxSTDlzjEi25hajisLfgqI3WmRKLr6nxhXB3csGyekE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785873211; c=relaxed/simple; bh=5qdEy4oeUki2TjVPtO3bSRNatCoADKMiiRcmvTyP4yI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jQgN1proQ+vh3jR+l+gMJfZfSDP4fc1lHAI4QqpHpHphqL7dLDf52iyrnQLaMK/nh2C6QpAoRLrpztHlLKNeXzgicZghSWWOvc0UZq4CYMdt1MFddtR/kQpGSJ5A3qbKUS7o/Tk4XwzczVs6HQQ+9xPZDW3TiPmsZhxjoLB39SM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=H/GATj/v; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="H/GATj/v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 42DF21F000E9; Tue, 4 Aug 2026 19:53:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785873210; bh=eZTPnA8T6m5jKR5YQ2rmt0TwzN+zuyiegoiKGxGEFqA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=H/GATj/vv394ubKViF/uvksnWOlo3ITmq7C6UgLeYGyOGiMjdClDOsUviFt23GL6t AjPMxezUMNaiBQplQn77PEQRekzPPbT4ZW6S6nDTveZOq1z3nZdVdFpl2L9hJK7WcN MPt5TiWIu7HZLFvjiEpeSnDZlKtaSiBYEtGGtyiTKCpFcy0y3MzBl6WxZ99ucw1tIS LF+bExfJl+ZVWEZQ9O0a0mcYLedBbjn3MGYsqmigstQ/k1VRfflVy6R0Cs6F2jAqXo zd1U5+RqTBuDac7GBNBdvI1/0+UMjUFFGnokIYmO5QuHy58KXleHqn7ZCVqdqp5VAV XysIv1/MpnokA== From: Danilo Krummrich To: tj@kernel.org, jiangshanlai@gmail.com, aliceryhl@google.com, ojeda@kernel.org, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, daniel.almeida@collabora.com, tamird@kernel.org, acourbot@nvidia.com, work@onurozkan.dev, jhubbard@nvidia.com Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, driver-core@lists.linux.dev, Danilo Krummrich Subject: [PATCH 6/7] rust: workqueue: add Work::cancel_work_sync() Date: Tue, 4 Aug 2026 21:52:08 +0200 Message-ID: <20260804195248.665636-7-dakr@kernel.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260804195248.665636-1-dakr@kernel.org> References: <20260804195248.665636-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a method to cancel a work item and wait for it to finish if it is currently running. This will also be used by ScopedWork's destructor to synchronously cancel work before dropping borrowed data. Signed-off-by: Danilo Krummrich --- rust/kernel/workqueue/mod.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/rust/kernel/workqueue/mod.rs b/rust/kernel/workqueue/mod.rs index 5de88c59b2e5..2b87f935712a 100644 --- a/rust/kernel/workqueue/mod.rs +++ b/rust/kernel/workqueue/mod.rs @@ -585,6 +585,14 @@ pub unsafe fn raw_get(ptr: *const Self) -> *mut bindings::work_struct { // the compiler does not complain that the `work` field is unused. unsafe { Opaque::cast_into(core::ptr::addr_of!((*ptr).work)) } } + + /// Cancels the work item and waits for it to finish if it is running. + /// + /// Returns `true` if the work was pending, `false` otherwise. + pub fn cancel_work_sync(&self) -> bool { + // SAFETY: We have a reference to a valid, initialized Work, so the pointer is valid. + unsafe { bindings::cancel_work_sync(Self::raw_get(self)) } + } } /// Declares that a type contains a [`Work`]. -- 2.55.0