From patchwork Wed Aug 14 10:45:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13763326 Received: from mail-ej1-f53.google.com (mail-ej1-f53.google.com [209.85.218.53]) (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 4E7941448D4; Wed, 14 Aug 2024 10:45:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.53 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723632324; cv=none; b=ESeSkRqqKMEzRlYGsr8MdWcpkeYkPIIO+SXi+zDRyu1MHIMuF5lG8BeVX77k8QJ+RWryTK7mEM4lVjHqZqkWx9R/K/ETBb5llgGLXkD/Egx8H/bHZSgX2PMlN+xtgbVJCHU35SiL5a+cdXLtHcL4m8n06ipPQmTVNd0gJSybjIY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723632324; c=relaxed/simple; bh=amKBBMp4xnYToJbWRRBiegoHTTx4884X3E3KKI2L3U0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=dZaGfetvKG4o9JkCiHJWgA8k4JyTS1q0ROv6Cm1hRdKZSJe7tLl1uX58fo05+0+I7dXzowErWjywNtE4RTlZmCgSqe+JbTxmAoGmaJnu/PUIdqJaerfb9jowH3gZG8FNKB9L3t0KuWpYiMrnYfPnd5gg4o9vNnk8XWWBbIiRTks= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=PTgIS5Kd; arc=none smtp.client-ip=209.85.218.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PTgIS5Kd" Received: by mail-ej1-f53.google.com with SMTP id a640c23a62f3a-a7a8e73b29cso608392166b.3; Wed, 14 Aug 2024 03:45:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1723632321; x=1724237121; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=qM/+H+q/dNtHslpBIUYQjOqvFIMBvCtYMIlLtex0MfE=; b=PTgIS5KdCQn03owMb5Przr7r+b41KsENJbZNx3IsK8krmUhKgzKwLOo/DpAQTgbaYm XyJabAVq6UGk5Fypeq/Fwlgulj+a616ZFXtM+wQi3smERe4r59j0nxc1AdeHVMFN+/XW jpbtDbjqe51TNx6JoGKd1D5pXlfNaUmGfZXxR0GQfpGJG+gnXrdzYFjiRFrQIWRt1Cga VGGTN6OYn9N0ZhzjsQIkEXl7WJlrlO0fShAHWxdHVeuq5B/w24sGYigOGdY/45aHpiuk 7EuHj3VQjFl/DjRHfJqiPlg5cQT0MyKtTqUDmdioGzV+4OsDMGF+inx4FUb27OTZmq44 AYaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723632321; x=1724237121; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=qM/+H+q/dNtHslpBIUYQjOqvFIMBvCtYMIlLtex0MfE=; b=aSIakwBpk9WTqgR+cuG7C2FPDTFUBxcXJYHtALS+vXoXwEcAn7HBpaDuUquKLTpy1a wb0r7xR92E0DNBwB+o1vO5c01cYwrRa/Sk2xW/rLWVcq2myT0J765MkixRvjBYKi69WJ nxTbS85K/vTvpEJXqy7KPbvxIgMXTkPCuOfrqVQRwn2iYN1dbetP75rVOLH1ONXVb/qM FpzkbYGssvxjxFssCpckYuj7rDHh5X4ufAblRKAVJSKcjZk5Iu0iT1GNqd6L1/C0ALM9 kXZW52WLUXudF8LoGaiOKT/zPjOz5RCtrf6PGast/ss9UBzJGqw2nIbvva9A8A0r4Yj5 moYg== X-Forwarded-Encrypted: i=1; AJvYcCV4gDCQHg1ISCd9gsauVINVS75JZv54/d3K++Eej4jMBWncomLT/+IPTsRr63vHmNXvJQYjkgTJTSxAtDtHRvYbwxdzxvicSlqRIj4= X-Gm-Message-State: AOJu0YyaYpInmz1QfSGhsFyWZQfSFadkhRISR9jVAEv304upGKL3QdD+ AW51FElUQf4YkpmiD7Nz5EGgUk8xngrvZ5HtDJVnLMoIlI0r3qhy0MsXOLC5 X-Google-Smtp-Source: AGHT+IHdFQH/XhI3MmWWusGKBBhP3P128eD6d5du59qhURe8iVDeuvNJeHFRQkMLrrS+UEfann4zlA== X-Received: by 2002:a17:907:e6cb:b0:a7a:83f8:cfd5 with SMTP id a640c23a62f3a-a8366c31b00mr153852066b.18.1723632321090; Wed, 14 Aug 2024 03:45:21 -0700 (PDT) Received: from 127.0.0.1localhost ([148.252.132.251]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a80f418692asm157212766b.224.2024.08.14.03.45.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Aug 2024 03:45:20 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com, Conrad Meyer , linux-block@vger.kernel.org, linux-mm@kvack.org Subject: [RFC 0/5] implement asynchronous BLKDISCARD via io_uring Date: Wed, 14 Aug 2024 11:45:49 +0100 Message-ID: X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There is an interest in having asynchronous block operations like discard. The patch set implements that as io_uring commands, which is an io_uring request type allowing to implement custom file specific operations. First 4 patches are simple preps, and the main part is in Patch 5. Not tested with a real drive yet, hence sending as an RFC. I'm also going to add BLKDISCARDZEROES and BLKSECDISCARD, which should reuse structures and helpers from Patch 5. liburing tests for reference: https://github.com/isilence/liburing.git discard-cmd-test Pavel Begunkov (5): io_uring/cmd: expose iowq to cmds io_uring/cmd: give inline space in request to cmds filemap: introduce filemap_invalidate_pages block: introduce blk_validate_discard() block: implement io_uring discard cmd block/blk.h | 1 + block/fops.c | 2 + block/ioctl.c | 139 ++++++++++++++++++++++++++++++----- include/linux/io_uring/cmd.h | 15 ++++ include/linux/pagemap.h | 2 + include/uapi/linux/fs.h | 2 + io_uring/io_uring.c | 11 +++ io_uring/io_uring.h | 1 + io_uring/uring_cmd.c | 7 ++ mm/filemap.c | 18 +++-- 10 files changed, 176 insertions(+), 22 deletions(-)