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 CE9104D8DAE; Tue, 9 Jun 2026 19:12:37 +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=1781032358; cv=none; b=sackz7LJtb1vhnyEjKAiTuyqG3gODJelBMA5Dw6hUc+8kGNMXP8m4VNfFyz74R5tlf50IqVutnpggL7YOoDK02JSoth260dTqDwW2M2v5Zms9xkIN45JqA5Vhbhds4U/XUurGt/Vk3Z+bnMsosgUTy/5HpMcr7fjOdLh5aGjuAo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781032358; c=relaxed/simple; bh=OGr4o32gLgytplFNTefSvmBphLU6/cXTR/X1CTCtpbs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=NtR0KHwcfmNHMRTdlvWWuoLD/r1/6YtI0MmE+8G4CfX/jhDL/ymxlwLq5qPXOmIrfrmRHWOZsIH1rTbLQ24QtIpBQ/ljdQ98q9nXu8SVNnAa34g+/SpHcb9NbqIU3h6LNqK3BbWD22BtU/YiXMp2g6D8mc6wlG4BV44eyWsZsQI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hSLqirSm; 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="hSLqirSm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6DC361F00893; Tue, 9 Jun 2026 19:12:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781032357; bh=SHThiWRFl6eX+o7HfToI0BveZqoyq24Iln96WP9m9/Q=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=hSLqirSmMdfe7JHeDMJEbaGk2xH+r8zJCJzvpqX2KhAAr9i8+gTGMZyAN1O1wjZFC 87zQtjSJAnw4CigqubVw8wKx94QKtNmMrfN5c7at91IeS592SC+4RIGtymDHm1YwCa YLJUWRbTanGImSCTPh9eGyzpeIrCOd2UbjnURp/RndyphhSh+uuhENiu2XosWeNgGW CdVJAtOFqRqSx44VleaAHHBq96ylbwR33okKwYWrDDhCCpyXGW8l/aCJ10fBnnoNeF gDyNOm1J8ES8pByB/3zTYzR5n0qqCLrmYO2IeqK/tGMJ6+8bvXHby5oTUt8Hb2HC8z /PO7x6UNlMlnw== From: Andreas Hindborg Date: Tue, 09 Jun 2026 21:08:31 +0200 Subject: [PATCH v2 52/83] block: rust: add `TagSet::flags` 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: <20260609-rnull-v6-19-rc5-send-v2-52-82c7404542e2@kernel.org> References: <20260609-rnull-v6-19-rc5-send-v2-0-82c7404542e2@kernel.org> In-Reply-To: <20260609-rnull-v6-19-rc5-send-v2-0-82c7404542e2@kernel.org> To: "Liam R. Howlett" , Alice Ryhl , Anna-Maria Behnsen , Benno Lossin , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Boqun Feng , Danilo Krummrich , FUJITA Tomonori , Frederic Weisbecker , Gary Guo , Jens Axboe , John Stultz , Lorenzo Stoakes , Lyude Paul , Miguel Ojeda , Stephen Boyd , Thomas Gleixner , Trevor Gross , "Liam R. Howlett" , Boqun Feng , Lorenzo Stoakes Cc: Andreas Hindborg , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rust-for-linux@vger.kernel.org X-Mailer: b4 0.16-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1127; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=OGr4o32gLgytplFNTefSvmBphLU6/cXTR/X1CTCtpbs=; b=owEBbQKS/ZANAwAKAfpQKQiqxb3QAcsmYgBqKGTjD/SsS15S2X0k9iUPabdH4odGbYwDe1N6N 6f6Z6npMbGJAjMEAAEKAB0WIQRXitnI2WZ2JirAaob6UCkIqsW90AUCaihk4wAKCRD6UCkIqsW9 0BqjEACmNfk+sSeVLWEKg7qqrjEhETKAJdKa0iscz0fFFu5BCZYtskqN1Pe+gzH4+dxsr0nPBZp wFoG2ahBVLl1ZFM6xUD5wlUwnvbCqawttYwP9tRmHVlVHeDArVaWUnXcapkxPDUNo+RWr3nsPSQ TM3hKexhjGLQDNoOtZwP6z4n4J58mZ0FeHYSZgx6TOD3SOMpR0vOLZ8+opSfcFQDXnoo9T9xkHk EqbddpiRIe17zJHcW1XA6kUthmI2JZab72b+IjuBR/NQqr+cg5oRSFafIj0EjDD/IdeVQ+DRqNd 8vUgnW+2fAyuIbgxeq+/bnuy+Yp0MsopvmFj9siA3Kpr1l8LgSJ6Qw6D9AbQ0CnL1Hrg3DgGDVH fF4DCvpOb7/bEaKGo6OQ5hsY8kPb13y1q0p4XM94MvgobrunqFlJNuWulMDtz6cBJewScWUyKoc 9c4dGEBHCEJokswtZYoAvoQJDhfOQGzI/5k1jUwapW44qpjVhWS4OlRZD8qPJKoa0iI8dm+m5Vl S3+RawjqCptgUdxVWG0VUXAaEpWzQ+ddyLGHOK4WV1kP77VB6GlWEprAoNoj4fhj7s1SciGYsa3 cv85EOjJFomaU8MELbJfwoihhJgdcgv8QPmNTICa+Zinnxx9Zir+POqXejgqcP07lZVrtdQPIi9 vu2Y6Bmvw6jKhQQ== X-Developer-Key: i=a.hindborg@kernel.org; a=openpgp; fpr=3108C10F46872E248D1FB221376EB100563EF7A7 Add a way for block device drivers to query the flags that a `TagSet` was configured with. This is needed so drivers can inspect properties such as whether the tag set uses blocking queues. Signed-off-by: Andreas Hindborg --- rust/kernel/block/mq/tag_set.rs | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/rust/kernel/block/mq/tag_set.rs b/rust/kernel/block/mq/tag_set.rs index 5359e60fb5a5..157c47f64334 100644 --- a/rust/kernel/block/mq/tag_set.rs +++ b/rust/kernel/block/mq/tag_set.rs @@ -107,6 +107,15 @@ pub fn new( pub(crate) fn raw_tag_set(&self) -> *mut bindings::blk_mq_tag_set { self.inner.get() } + + /// Return the [`Flags`] that this tag set was configured with. + pub fn flags(&self) -> Flags { + let this = self.raw_tag_set(); + // SAFETY: By type invariant, `this` points to a valid and initialized + // `blk_mq_tag_set`. + let flags_raw = unsafe { (*this).flags }; + Flags::try_from(flags_raw).expect("Expected valid flags from C struct") + } } #[pinned_drop] -- 2.51.2