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 5F20A2F6927; Fri, 20 Feb 2026 08:06:42 +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=1771574802; cv=none; b=Qsxx2adPhvGyVZYqPb3z7GqXN31VoK8UcVrsJvGK+BV0MRx2q2kiecdD8pa8auv/lzeZfMh1dlaK4NFJwe3XbEepGAWHlS+EvMPJKFImpY1kOcwwvPvNy9VBaQT75CAhD7lX4O4cR5g0FHTJWHmdTb9cGjF8rHDnJqFYpLt/Mu8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771574802; c=relaxed/simple; bh=oh7ovVTPXi3INDBhW35BsZCibXB0g/u1OgpzR9VgEXY=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=jNUFHq2lx2mEwPxRVtgyI7JDEwzUu0uBHcXHlmMvtBg7r7EifCsiYy/APzW923YA0Ev2ZqtFe8wTHcSGEfhNGm+7DRraNBu3ox1VROPFnaN9me9n2v59rLmGXuS/UkudbeOmpupwAA/iAurljvWp59JHUXomDNscME3bFR55kcg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZycM0s64; 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="ZycM0s64" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2E92FC116C6; Fri, 20 Feb 2026 08:06:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771574802; bh=oh7ovVTPXi3INDBhW35BsZCibXB0g/u1OgpzR9VgEXY=; h=From:Subject:Date:To:Cc:From; b=ZycM0s64PegXW4ntR4QwRyLf1Cua9f3tnCFzmtv0XmAzv1QEgdJmtI+aa4n9A+eZd s2dAYl3zNGG06z5RfnmEM87jhsYRxDhfieOFqcutC2HjHHZmI6EvEdCRWk1CD6QMZx KiqxjpJ413aE93uTpktk7eu7ThpEjYT8p+wNYeCV6BoZ6SHCoq+b3Yi3TeTlZ5nEoK a/ikTjKiRbRXMBYC4bITcETT1eCz52ZOsPNAq/eWiXWY3By/7fScHdrZKVBOswXWSR tg1/dNocmEhZTZNhvo9zHlK+QfReGjV/Rnyl1tP/J88PSsbrsnVxr7C7eiY7QNmw/4 gGGaZzL1H7ZkA== From: Andreas Hindborg Subject: [PATCH v3 0/3] rust: atomic: add `fetch_sub` and update docs Date: Fri, 20 Feb 2026 09:06:19 +0100 Message-Id: <20260220-atomic-sub-v3-0-e63cbed1d2aa@kernel.org> 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 X-B4-Tracking: v=1; b=H4sIAPsVmGkC/22MSwrCMBQAryJv7ZPkibFx5T3ERb5tUBtJalBK7 27ajRRczsDMCNml4DKcNiMkV0IOsa+w327AdKpvHQZbGYiRYJwaVEN8BIP5pZG85wcpyHpOUIN ncj68l9nlWrkLeYjps7wLn+3fTeHI0TdGKG20ZuJ4vrnUu/suphbmT6FfS1yuWkKGjbZSGmU9C btqp2n6AodhKtThAAAA X-Change-ID: 20260128-atomic-sub-2ff15962df12 To: Will Deacon , Peter Zijlstra , Boqun Feng , Mark Rutland , Gary Guo , Miguel Ojeda , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Alice Ryhl , Trevor Gross , Danilo Krummrich Cc: linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, Andreas Hindborg X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1140; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=oh7ovVTPXi3INDBhW35BsZCibXB0g/u1OgpzR9VgEXY=; b=owEBbQKS/ZANAwAKAeG4Gj55KGN3AcsmYgBpmBX93KiPJhPiw/vaSeYXethKoU6bfx9piMDMf KRfeo6zzEuJAjMEAAEKAB0WIQQSwflHVr98KhXWwBLhuBo+eShjdwUCaZgV/QAKCRDhuBo+eShj d/uJD/9c7ARgX7m/l+q1AYKSMf1DCRcXtVWySSsQQU0op85D4E5gy4xQ5T13AQlC3BLcyC7hIsp e8GjnclSx3h/i0BVVau0/lr8McGxxzTOuJ4zypKfNVC15f5f4knfjFmPxMZuPYRZEh58tNkgPyn BubmynwCUc15OKzkxelyfOOTCKtSN/0IQDKe8Xk1Fs0cgMx2HOHyLGL9NIxa/xOEg9LU+R+KG8O 6J2iTNxZoLL+hDZgQ2iWCDgGjTmxe/FKe96AMHqNBKnjXZbi7HMgPZhrsGblrB/pX7ZqYHeTgAa nKYmuOMxs8c5LpZXR38IIm6oQQgqUbtxl2EUDwNuM5quQrNG+uaexcmZOIW3x1EUuPPUbGoi+om gnZktPIMNbjwxOr7SvFKPrbiVRi2AaVxKUXn4+7KsKJHQrPlwtuMnCBofVLKqXMlYemAShSgxOu kNzuuZkLo+np6a/Lncqq6Tz38EfJUTvfwKnk8mdbr/Do+hwd0MSxneelMKSdNz0ojGkIWHYxVYh sPnhIfZpfw1RzNKRjq4okq0IteQ/akNAQqGweq3nmj70ubl3fu+GFTVyFZTWm/z7ypfAvr3UxZ3 ekOw4J9n2TtIqrb5KCdtsytvBGZsOmNQbTNVG8RhMhPaRO/90vBUSVhW0R7Jfe+oAxFuifUj7kv nbA+r9Hv8AAouaw== X-Developer-Key: i=a.hindborg@kernel.org; a=openpgp; fpr=3108C10F46872E248D1FB221376EB100563EF7A7 Add `fetch_sub` and improve documentation and safety comments of of `fetch_add`. Signed-off-by: Andreas Hindborg --- Changes in v3: - Remove a spurious line feed. - Add a patch to update a safety comment for `fetch_add`. - Update safety comment in `fetch_sub` implementation. - Link to v2: https://msgid.link/20260219-atomic-sub-v2-0-8bd99cadf26d@kernel.org Changes in v2: - Update example to be more clear. - Add a patch that updates documentation for `fetch_add`. - Link to v1: https://lore.kernel.org/r/20260128-atomic-sub-v1-1-f8c6abcbb067@kernel.org --- Andreas Hindborg (3): rust: atomic: add fetch_sub rust: atomic: update documentation for `fetch_add` rust: atomic: update a safety comment in impl of `fetch_add` rust/kernel/sync/atomic.rs | 53 ++++++++++++++++++++++++++++++++----- rust/kernel/sync/atomic/internal.rs | 7 ++++- 2 files changed, 53 insertions(+), 7 deletions(-) --- base-commit: 63804fed149a6750ffd28610c5c1c98cce6bd377 change-id: 20260128-atomic-sub-2ff15962df12 Best regards, -- Andreas Hindborg