From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B4B95C38142 for ; Fri, 27 Jan 2023 22:07:20 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.485978.753442 (Exim 4.92) (envelope-from ) id 1pLWry-0002Fk-6M; Fri, 27 Jan 2023 22:06:50 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 485978.753442; Fri, 27 Jan 2023 22:06:50 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pLWry-0002Fb-3n; Fri, 27 Jan 2023 22:06:50 +0000 Received: by outflank-mailman (input) for mailman id 485978; Fri, 27 Jan 2023 22:06:48 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pLWrv-0002FV-Qk for xen-devel@lists.xenproject.org; Fri, 27 Jan 2023 22:06:48 +0000 Received: from wout2-smtp.messagingengine.com (wout2-smtp.messagingengine.com [64.147.123.25]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id df26c746-9e8e-11ed-a5d9-ddcf98b90cbd; Fri, 27 Jan 2023 23:06:45 +0100 (CET) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id E23A732009BC; Fri, 27 Jan 2023 17:06:36 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute5.internal (MEProxy); Fri, 27 Jan 2023 17:06:37 -0500 Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 27 Jan 2023 17:06:35 -0500 (EST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: df26c746-9e8e-11ed-a5d9-ddcf98b90cbd DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= invisiblethingslab.com; h=cc:cc:content-type:date:date:from:from :in-reply-to:message-id:mime-version:reply-to:sender:subject :subject:to:to; s=fm3; t=1674857196; x=1674943596; bh=TPBEW+uosa jbirowMp+jxKXraQdttyikIIaXjbTbDB4=; b=vKA95+vD+TZtLXUoXaU9BBrozP 4dCxrxxKxnN7h88FlBZpiC/SIfFMg39I3jkG75FgjsLjSGIUOl0NBwxfV26J9ieI je6jNQf7G80WtS3Fsnaki4lrXpKHDB3GNaibgMxCfJDe/k/SqMEshYrcn/1akesj g3IibY5pM5qtlLK2K5QpVy8MGjGY7Vs2/ukZvVHc0jM22faNk/cgWP9ipu/m2swx 42aXf1CefxttCSOQncVXGua08O3/2+Xz187Aw9Qrkhck68z3FLzqCqOzgqV80J9Y f8JQkP7SkDmlE3tm1Fq92kd+3B5Gs4idA+Px5wFCXlNAp/RpSzP8SbbCZ/xg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:date:date:feedback-id :feedback-id:from:from:in-reply-to:message-id:mime-version :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t=1674857196; x= 1674943596; bh=TPBEW+uosajbirowMp+jxKXraQdttyikIIaXjbTbDB4=; b=p CiQBL4Vu7YaQHF1aDsbMqLYdl83dzb9YW8yfBilrgHK7hcPBgLg//yjY0L0ilSt7 KKeCA0AXBO69bsIzyrCXAiG0OtyvmdzzIts1Ud15ccqf/R9ZMRRQZECpJFT46Oyf q2kzvJKbxoszPhSunHShb4e4HAZ9rJ8+0ECvYz5oBJmZC/JdoF3IxpxZ7afreLe+ o+2/E7qCOfMmmENohkPe9bcKhCHddrqpemLyM1tpZzMtp8XTbIqDGt8RGAMiLLkD VJf84rPX3EL7FhLlvEZOR882TtMn1N316/VXxCIqOQKVTQxdfA12vkwPYZrYBLdS zYLQ38/6YIMHEZ7tQPWig== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedruddviedgudehiecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpeffhffvvefukfggtggusehgtderredttddvnecuhfhrohhmpeffvghmihcu ofgrrhhivgcuqfgsvghnohhurhcuoeguvghmihesihhnvhhishhisghlvghthhhinhhgsh hlrggsrdgtohhmqeenucggtffrrghtthgvrhhnpeeiiedvfeevvddtgfduvdekieekieeg heelkeetffefjeekfedvgffgtdejveeljeenucevlhhushhtvghrufhiiigvpedtnecurf grrhgrmhepmhgrihhlfhhrohhmpeguvghmihesihhnvhhishhisghlvghthhhinhhgshhl rggsrdgtohhm X-ME-Proxy: Feedback-ID: iac594737:Fastmail Date: Fri, 27 Jan 2023 17:06:29 -0500 From: Demi Marie Obenour To: Xen developer discussion Cc: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= Subject: Regular file support in Linux blkback? Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="JgBqpPnRKPLzKWek" Content-Disposition: inline --JgBqpPnRKPLzKWek Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Fri, 27 Jan 2023 17:06:29 -0500 From: Demi Marie Obenour To: Xen developer discussion Cc: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= Subject: Regular file support in Linux blkback? What would be involved in supporting regular files in Linux blkback? Is it just a matter of using the call_{read,write}_iter functions for read and write, and punting the work that cannot be done asynchronously to a thread pool? Or is it more complex than that? --=20 Sincerely, Demi Marie Obenour (she/her/hers) Invisible Things Lab --JgBqpPnRKPLzKWek Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEdodNnxM2uiJZBxxxsoi1X/+cIsEFAmPUSukACgkQsoi1X/+c IsEQIhAAj84mXFmQ8iojEvwh+xC9AfAEgY0m87RnVfj4sFqiOWPZ4QK9uMApgp/R pTVf4sjcSqtPgNMygAwLdWtJA56U2bhnJDyWYYLTBGuwgsD6P+lKEKpOulF7qebM Tl85A6LYLVjoOr+QkprMHQC52TdIjtOiygTaD/VoaYe+FdzsPJaHRei3a8K4YmCv ooxcyJLNbYhpZi6bJNMyZG3CunEqK/QY/A57Rl7rYxEyils9o1uZhVF5fg+T9K6T weC5AJoPjLM4BRDsEugxPPJAhViusyF7Nbaa5r5ePDUIDgDJzD0aBAyj188SK3B3 moAIhrJbOAhphBpWSu/7d3Kz9YyuUt6mhDiUGpBblxR/OapSJeF89vrXAefqkBci TMTUN1v6qGwfdMVl/kJNxSPq8nGOp410DsH9fGkUboMzo3awLnOOQCm2yKOLq9oU uyTyOzprQGzOujrF67rqEBEmHHojgcmSUug7Ndk8YsBuTSvs1FoM36Fwp7GN7IN0 U9Jxtdz+HTxTJLqey4DE9Cj8xvet11eFSKfVRkJx31x1CSpKc1img0bN3sF/xijj U/ZLa44VHZzsK+Jk8PAoYbHF14DWiY0AfHMd5MXd8nmiUcFhAbfaXy5avyySEXtB kxjmFXZ0WTt9lJeJO+a9iY4fzOlWqf4h9Vo3TJ0kcO2f7fh5+7s= =XMPn -----END PGP SIGNATURE----- --JgBqpPnRKPLzKWek--