From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f42.google.com (mail-ej1-f42.google.com [209.85.218.42]) (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 B19F73FFAA1 for ; Wed, 29 Jul 2026 10:37:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785321453; cv=none; b=h4T69Z3mVjoV6STm/uH/nxrmMqZK7TvPPWGq54TM9ZL0fLaehA3il2Qff5Z0bC1cZ8YTBKJ+v5lFGsVbQToVbjJJgl4u1rfK4VLUmZ3SbPmQxvijNDDc9X14YzJFdhxKXnSM4gzu73mBFrag6gX/0JvMLRelP+rCCo8H/PwmDD4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785321453; c=relaxed/simple; bh=KMDBHWwtyZpTu40an4MnGq08B+PKsj/C5jew5swtPtE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=jPtbFwG5JU6T3GwBqC2GKGuS7by4zZVu7QB5+HnhcRqrpDI2Ss/Hl+N7vaBMousDHpfOXvhXGvJzZ2Dt18nNst4IhkDT77sNjaDsVzVf3sKEt/N1CW8SDEhNkFkvqq6cyBQ9ZUHZ/zHg2hcvv29+kyIi8Df6/G/j9z80rsMDfoo= 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=lZQ+kMJe; arc=none smtp.client-ip=209.85.218.42 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="lZQ+kMJe" Received: by mail-ej1-f42.google.com with SMTP id a640c23a62f3a-c1712a04ddaso131902566b.2 for ; Wed, 29 Jul 2026 03:37:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1785321450; x=1785926250; darn=lists.linux.dev; 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=p8KbmJYcU1SAlCdU+OP1hBT5okmuW3fRl/0GYAxB+Rg=; b=lZQ+kMJeAg6CY46h4VnSr+KJe26e5ll+Y1i9V8CrkY/iq+/LgogBT8JEK0kMQyRqln P+i3jxFYmxQ8mlT+gUOkuAYoHltIZg/Ri/AFS8nTAGN84HbQZcfpsYQ8hZWuNKWmj4iZ +aUtG+1FYlMKkEPTT5vIuDs3TDkIqOSg8bRDQA5fCgps++VzgZOL7tqial3hYwgQMzQ+ Q+Fr89hPCPs7Uwv6KMXNIfdK8merzMM70JSCEahtUy85O8NAO4Jdi9BPn5zS5ttrnbUJ 6zPzaWxtPVb/ERuBlDPiQmO5f9VMQ4GmqIDJm6fEFs2IhgyC7CFRlwkYziIzfJQCa+sQ /gsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785321450; x=1785926250; 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=p8KbmJYcU1SAlCdU+OP1hBT5okmuW3fRl/0GYAxB+Rg=; b=PJXE89gglE99oqgOwrgurZccI6Zo7SWIQwcZevM78mm9aSPM7OYOkhuzKCFHrAILBA lQ9qN9Gxk/9xk77O0p9exVRfq8L+H13BHHOo+7uxX/Y+PyP6yHXoOqLoB4hAVyFHkIQn DthcNBl4XvknEcanusDZ//yOn+FTS/OlV3yBrjUKYYtknuKd9sxtG/7GKSL0fvypII0+ ic4RuKotVO5bZO0C+eKN+1784l8tK84qOtSHZuRqvYuOAot4Es5n2SpYGjAhanrWp5ue f6V1lH1MHs+/sZMaCIkegLM4WzL2xgfiyeNOprbfvlxPOy9O4BWgqtNOSVJoEC8N5qBf jH3g== X-Forwarded-Encrypted: i=1; AHgh+Rp1wMAVNLhjD4mbyAneRIFRIWZtyLIKDfnOFaNHetSRm1kLxSz0DEm513PddgsuP2405ekQPWA=@lists.linux.dev X-Gm-Message-State: AOJu0Yy3frY6c1mN8yfvIm9upDDIi9bUPgLRjxW+LX/C6vmIsj3P6Kdu 17Om++lAjhr49Eh/mGqGDvLd07lOfClvT63iQ+i+LOszSWdhxy6xUdTB X-Gm-Gg: AR+sD102HYezhcMYuEGc6nFoLeMbQOymrlNRCUffsujPocyKkNgf7Ay22MDuiToFBci ckX+xOwNGUFmagO/wBpQLITxE8VH6qxDFvtWbE09a3UncD4sL6+9+4/k9XCsPIq4nAZypbNykVt cdiyFlYn9mDp4b6mj5BiWQqY0ayO2EKBWN0Sutt9tGsTcjP+li4FLG21yrtM+3LqYV2MNVKv+i6 tdpFiP0rZQF2hvsS1c+q+JREegparNyZQA4shkWlpu+c7bYFen79MPb8pFxEDH7Cyd5P6DgNzds t20yxcq36GaPJamtR6CBewxa5a17lCoR0VUAGpleCWLtew2gnaXDHgdB94xRjC50uBT/xhPc8Q/ l/AJYzfFClS58B7uTyeKw9cPpWel4u7jTiFJNi6u/UX2LhBXbD9mMmO8RtQKXRxtL/46ExIeyw0 N2bx0FFPdXIdK1vo0hwjRSDXCERppOw/6+9bXMhd59klWg9GlXWe9GRE/UmZb1OrwXDhQRKokzS zrG9aIWtul0NEHcEHe75p4XRr5ax0f3mr+dxTSSSS/cMjAMk18lkN+BM/t49/i62ghR7cR8tiJe OBbqeoXi0JpUltErv94= X-Received: by 2002:a17:907:9617:b0:c1c:62b4:1ebf with SMTP id a640c23a62f3a-c1f721913ddmr365145166b.60.1785321449861; Wed, 29 Jul 2026 03:37:29 -0700 (PDT) Received: from ?IPV6:2620:10d:c096:325:77fd:1068:74c8:af87? ([2620:10d:c092:600::1:640]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c1f84026c47sm93918766b.63.2026.07.29.03.37.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 29 Jul 2026 03:37:28 -0700 (PDT) Message-ID: <340dd033-2a45-49e7-afd6-95dbbbf624da@gmail.com> Date: Wed, 29 Jul 2026 11:37:19 +0100 Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 01/14] dma-buf: introduce initial file I/O infrastructure To: Christoph Hellwig Cc: Jens Axboe , Keith Busch , Sagi Grimberg , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Alexander Viro , Christian Brauner , Andrew Morton , Sumit Semwal , =?UTF-8?Q?Christian_K=C3=B6nig?= , Nitesh Shetty , Kanchan Joshi , Anuj Gupta , Tushar Gohad , William Power , Phil Cayton , Jason Gunthorpe , Damien Le Moal , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Benjamin Marzinski , Vishal Verma , David Sterba , Ilya Dryomov , dm-devel@lists.linux.dev, nvdimm@lists.linux.dev, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org References: <20260729065927.GA9534@lst.de> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <20260729065927.GA9534@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 7/29/26 07:59, Christoph Hellwig wrote: > The method name feels a bit convoluted, but given all the > previous discussions I don't care too strongly. I'll leave > the dma-buf side review to those who understand it. I assume you mean this: + int (*init_dma_buf_io_ctx)(struct file *, struct dma_buf_io_ctx *); I agree, and all dma_buf_io_[ctx,map] look clunky, but I don't see what I can drop out of the name. Suggestions? Maybe I at least should make the fs op sth like "register_dma_buf". -- Pavel Begunkov