From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (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 6BA9654489B for ; Tue, 13 Oct 2026 20:13:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.44 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791922401; cv=none; b=FB6tvGqWw8F0luV3pGOO+mUwcIk14Bf7AQO9owNal9OzikJ1z+3vtL7MxzkaMK0zvnUDFBzyOQug7lOdp4NrFu4v/J5WSQldQh9a9yY7U7l1/ugx75vjn3ONZZmNd2crLZX5q5q0C4L3uYjpT1AI8uJUoZ4rcH6P8DRHTHKwUM4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791922401; c=relaxed/simple; bh=jhbx9laNPy92AqwKrICB3iCZDPZ5wNo0jYJGltxXPiA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=lOUzj3W/9C1XTk0B24ZwUmlgqpZv6F26oXJjx+4kaLGKBcOeIIZGC3q1ULwtYYYcbDuYtiBmxcHbTNKUN4PuDU8N5QgTafkzdKFyLp3tgONbBmHPxYws2jHHiVAsyfPKD6r88k13+1jx0dLGHD9GlRtju7TE6IoTafJLdjBOMaI= 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=ld3gp7MK; arc=none smtp.client-ip=209.85.128.44 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="ld3gp7MK" Received: by mail-wm1-f44.google.com with SMTP id 5b1f17b1804b1-4a16aaf2067so3542825e9.0 for ; Tue, 13 Oct 2026 13:13:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1791922397; x=1792527197; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=Z2hIuYUY9dxFL1uM5B7+C8H4OaVqNBpDv98EiuOQjRo=; b=ld3gp7MK5FcPklAwnoAExZfcQ0nj4/hfGddimZr3xS6GP0gYcjwgPTZDcP12Ee/g5o YO474N/HuWU8J+zgOHBgDO5fU/OXrLAv0wx1SNXyUayt3524LMDm01VvpeRDkkPTjwKb 1BnUO6jONh/m02aBdswYTy46X8oyBXHiuLr6Ol6RI/rDWMfS2hfXlHNixSwsRvYg3sa2 ZVvgJNEOZA3rpauEkqTIFOaeJscyA8JJj8/MQ2Ll9WFGWmuvc14ROSKKPNBOJ5iHjl/a 6RlolqFpDWJX6FnIqK5R4k//PNcMKCrWFuMyRoqajPFt5NiFTscqn5N8zWmWhCk1LBA2 50HA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791922397; x=1792527197; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=Z2hIuYUY9dxFL1uM5B7+C8H4OaVqNBpDv98EiuOQjRo=; b=E8RGqSzWrmqRzeHi/mGeRFVkul5FcrW4HghhbPiHOt4lILzYtv3Vvv855ZbDsjfbUP /Uz/6qPh/nx7c9rJwI6ramWZo67SIlIoAwtuU1S6Xf7zdAmu4gR5GbSsgG7k5yU4yLR4 RlgNiSIhyTVKSGL30h7XTys9x7SBahk3orS9mH1mWYegDEn0dYVB5VzO3gs3uHoFG3xd NVarDV7+Kn2Zx2GlDYtBqm5hbrf+GBhpUsZEv67o6RF4nqSj+WYgeilk2Bzmh5xDnjlZ bV/Z5RaqigkAYKL6hymXLVybhvLgkmsWHjGlGUFEEKYKsqD/eWdgglA5T9ctPJEauqLJ /2zw== X-Forwarded-Encrypted: i=1; AKwUvBxXFJyQfDuCPuDIe4he1/+FkOWtPTZ47DIRjHpFS/YuErY9+jphEPvjj9KFVL9SHmZ/6l2Skm8GCNM8cg==@vger.kernel.org X-Gm-Message-State: AFq9FYKws1fL8/6VyfnFnpNwuLeWaDgTZnZn1QosC3ktmDpOqX1BktJQ 6EqE68orWdTPx/RDslcLmA01Oe1KJsTUZXzYiaS4qrZMECt0ZB7AuwlJ X-Gm-Gg: AYBFou1XarCW5QvjZfSJE0mxlxlka82jVb99OZyI+F62H9gXTVaPTR4SCn5rDgMcFi7 d7yynqZErU9V6/tRg9NJAGY0wG5eOnDuh4d0PcVe+IGtf0EqpH9+rmAZP6bM/vFST1m04gmRdZM 3YxKgAJJ90eIw84LvLH9RZuiPRsLwcrTVxRWXBZTmfGUnLjNK/jfVqsKIJDCQ68g45hXPyy7Tlm +pi+HP3H70sZmPq7ydhu3QBNFDuE3mvzJPO5TqGdrbCszqjED1ER0O3zB9FrvbR44xi6U8CAkL3 jK/svsktaRLAiKxwP1UQ+Ez5tDEXIBk0IOzl5dm2TZxXnQLISEX0pvTp5k89838CNKX0ZjuSTxq l+wQw9UVW8pMT92QpgBqiwHZQ5kCIgP7gmuLA0hWO2TpRUqkbXnyhRU8m1w1wKy5Qn5wVVW30uT /knkAq3zGjbGR+wWFFHI/90QcjVnEiXgDhZq+hGY8/8OoxQerRqzXsUBXZUm2ZLPmNs2teJSjkF MTJvt1A0Nqco9uR9YgAddBvGX13snXWUcVd+YW+DN+3cwfpiWEgN5M1O4stF8ucfjUO6FxAC/FT IiAfnvtJFwqdf4aSWuYawfVgL6Neo3n6BjO+FiUBl51XPL6e X-Received: by 2002:a05:600c:4f42:b0:4a0:b6:4619 with SMTP id 5b1f17b1804b1-4a18e3ecfc8mr324117205e9.0.1791922397398; Tue, 13 Oct 2026 13:13:17 -0700 (PDT) Received: from ?IPV6:2a01:4b00:bd21:4f00:7cc6:d3ca:494:116c? ([2a01:4b00:bd21:4f00:7cc6:d3ca:494:116c]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a18be97d1esm608335675e9.8.2026.10.13.13.13.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Oct 2026 13:13:16 -0700 (PDT) Message-ID: <736950e0-c890-441e-bfa0-ef5d2b7b7d4a@gmail.com> Date: Tue, 13 Oct 2026 21:13:09 +0100 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 05/13] block: add dma-buf support for raw bdev To: Anuj Gupta/Anuj Gupta , linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, Christoph Hellwig , Sumit Semwal , =?UTF-8?Q?Christian_K=C3=B6nig?= , Keith Busch , Sagi Grimberg , Alexander Viro , Christian Brauner , Jan Kara , Andrew Morton , Jens Axboe , Nitesh Shetty , Kanchan Joshi , Mike Snitzer , Mikulas Patocka , Benjamin Marzinski , dm-devel@lists.linux.dev References: Content-Language: en-US From: Pavel Begunkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/8/26 13:27, Anuj Gupta/Anuj Gupta wrote: > On 10/7/2026 7:12 AM, Pavel Begunkov wrote: >> +static int blkdev_init_dma_buf_io_ctx(struct file *file, >> + struct dma_buf_io_ctx *ctx) >> +{ >> + struct block_device *bdev = file_bdev(file); >> + struct gendisk *disk = bdev->bd_disk; >> + >> + if (!(file->f_flags & O_DIRECT)) >> + return -EINVAL; >> + if (!disk->fops->init_dma_buf_io_ctx) >> + return -EOPNOTSUPP; > > dma-buf doesn't work with PI: bi_dmabuf_map aliases bi_io_vec, and > blk_integrity_iterate() walks it as bvecs to generate/verify the > checksum. rw-dmabuf liburing test hangs on a PI enabled NVMe. Something > like below is needed: Thanks, I already took it into v10! There is some some confusion with the branches, but will get incorporated in either case. -- Pavel Begunkov