From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f181.google.com (mail-pg1-f181.google.com [209.85.215.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E9C5881E for ; Thu, 31 Oct 2024 01:46:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730339197; cv=none; b=hjlJfVF7jhIJG+G6n/qHvpqbO+PPKGT08sSNDB4N4wTdtrRWaHmL4zL4xmoY8NhHboYa+QFbv+2J4qed3apGHFxEP9E6XkKUyI9r+qOkXm4u+6YR4sPmiDbAQNn5uym84Pmw1fBwhV5GbL8bm1ujxRdsfp0V63cTKFtaD1mr4Cw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730339197; c=relaxed/simple; bh=NIDfLk3n2ciLPYcmWx8Iv7uT3cDkcYZ+tvJbgPEKdv4=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=RH19dT8VQ8H2SV3K+fiQbeGM/zXFjHhNo8sYXh4DiiiwXUPogTvVNTt1sdeQDEch00TQx2Ez1KxBtWPCOOsG6S4BMyjtkdGW3yVuC7T3Psr3hulzEKgXwaecmvEo66UHP5a7KY7uZ1EPJD6uYttXeVFkqYbQsbV7adTEaQyuugE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=wymQWMoa; arc=none smtp.client-ip=209.85.215.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="wymQWMoa" Received: by mail-pg1-f181.google.com with SMTP id 41be03b00d2f7-7ea8de14848so382241a12.2 for ; Wed, 30 Oct 2024 18:46:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1730339193; x=1730943993; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:from:to:cc:subject:date:message-id:reply-to; bh=GvLh6kDI/KsyHvPVz8PuDIOcZby3LXYSyltQ68Sbue8=; b=wymQWMoau75okM16as0KVm1QrxRI0Gz1oYnzMJMSOQmufSChGXV1YxVZCCWLily1Ml 3y9L9v2TfgAGoRCBYrQJ1YfeTvlrGKSFytfQhRVoCuNBrcsSdeWBOZgIkjOAn5rkkw7I H/Oi/gYcVWHv9Fwf1kM2Q+z29a8QeJKOR0zvy2kjXA38pRNVG/GKibfr8ePfMiLXmdbp 5kRUm+YasKd1NC9J9t3owSi8+P4Z94JbElsmtGDFwdwQwbgqIFJ3fASfR7CIZ7CgNiIb oxl4Vvgxv9lET6Ay+5NnsLMa2oie03O9xvn/moLl3m5G/kR/7aWT0NS7U3+wH5E1H6tD Rzgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730339193; x=1730943993; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=GvLh6kDI/KsyHvPVz8PuDIOcZby3LXYSyltQ68Sbue8=; b=wNMG0dVwPm6RSXeJfDd1Xi5XvqGc+7Tqj9ETKxDnm7zcE81axFcVe6e6A67gHUyivq CihVWwTYF0D3uZOCxjQN7+cbLgIwWIufw7VWQrwW411dGcDv2+zYr9yTPzhoLv6oPUMQ pcWUKTcTDzlGZWeFA7SC5glgvJsoQOxfm7GqZL49qXjH3XnsjTJglGCUKQHVT7LqI0bx 1yZICKLv+323KR6qOuE0xD70pLP7wnSzZtl8GoWBvU0JYiJp0sy+0YD6u3NetP6ybmUY BBFFaxPRH+nVBUTMieuPWDpcGyh+9lCBPEFp+ddEYRyr4XSKgWV1K79JTAPl7P2fzpa3 Z+/A== X-Gm-Message-State: AOJu0YzGWLHyek9uMsjN3f8URVy6znto0pU1YoyOfLlNWuxlKjCePn+N C6CXRwowVytXEk6g4Jtv7qhHWAw0oKpjiSS0abHyZQyCboThbGQRR999R8hq7kEufF7T3WhE5st VKYY= X-Google-Smtp-Source: AGHT+IE9fcvEiOABAygiWc4L/UaPOQUoqUDGC3PCD1wD1DyF8hOA/CNon+/a8HYQ9W6ZpIolM5V4Mw== X-Received: by 2002:a05:6a20:d488:b0:1d5:10c1:4939 with SMTP id adf61e73a8af0-1db91d4402cmr1634266637.8.1730339193174; Wed, 30 Oct 2024 18:46:33 -0700 (PDT) Received: from localhost.localdomain ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-720bc315aafsm285872b3a.197.2024.10.30.18.46.32 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Oct 2024 18:46:32 -0700 (PDT) From: Jens Axboe To: io-uring@vger.kernel.org Subject: [PATCHSET v2 0/2] Add support for cloning partial buffer sets Date: Wed, 30 Oct 2024 19:44:54 -0600 Message-ID: <20241031014629.206573-1-axboe@kernel.dk> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi, 6.12 added buffer cloning support, but it's an all-or-nothing kind of thing - if there's an existing buffer table in the destination ring, then nothing can be cloned to it. This adds support for cloning partial buffer sets, specifying a source/dest offset and the number of buffers to clone. And it allows cloning to replace existing nodes as well, specified with a separate flag. Changes since v1: - Rebase on current tree (no rsrc_empty_node) - Rewrite the replacement code to be much simpler - Write more test cases -- Jens Axboe