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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5073C43334 for ; Mon, 11 Jul 2022 17:18:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229645AbiGKRSs (ORCPT ); Mon, 11 Jul 2022 13:18:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229515AbiGKRSr (ORCPT ); Mon, 11 Jul 2022 13:18:47 -0400 Received: from mail-io1-xd2b.google.com (mail-io1-xd2b.google.com [IPv6:2607:f8b0:4864:20::d2b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56219A445 for ; Mon, 11 Jul 2022 10:18:45 -0700 (PDT) Received: by mail-io1-xd2b.google.com with SMTP id y3so5548319iof.4 for ; Mon, 11 Jul 2022 10:18:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=0tFRdeac06SJMsCOq/f2cgz2EY5sDCDg1mZk+43QRV0=; b=ka65AOIn5LxDbde2si8bwDbYBSN5qbpoeB2GLKlYUZKseQ/isw0mnUoMaMQUQa7JWz eQ8LecRXq7XZ+7i8GGZOOW3pdQ31Jh2bO47iYCh85DaiZeXFik9p0R8CheRULUcbX49x L6alNSRp/Hg56lhOQQK7CACBpdtw+TKsSaBEvWiVe4SJv8y7jILgKd78IRjzsjEqbnAB BzOLdUib9++niIUMMWWMMdSkeq2OlvNYWcPo3Mdrf4aefcSiWhNA9K9UkKICcpPYVMLJ Nr8H+/bNrI2wLcvqVpm551r3J8B5TZMnfW94RMEXkWMP32wjl/ABNhyQ/lMCuq2hh5LR lMog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=0tFRdeac06SJMsCOq/f2cgz2EY5sDCDg1mZk+43QRV0=; b=Zlk0CujnjexOFU6zv2X37/0rMaVMOXyXcLDzssNkmbac3riRK76B3EFgz6GN4bGvzC 8qY1hvSq75Hrgq0VXguoKi6OCot0gRqac4JVJx2jCqP70tyzXFrOCERBV/6Gltr/rkKi 6H7lvpVD4m6yI7iirV++xRaCPyHIKAGxO49dFM8fY0E3Ws/gwV2qSluj+KnBDP8WmNx7 AolRQxItt9Gv1pcE/M+RaGFXQiXgZhvQMPJQFPxz6krOkgdnRD6XYkfgwuTIf1B3nBxs GrCCDS4lsGLgy+3nIv6rB3+T+WSYlQuGTyuS3degR6L/ACOXRcgBQZHyx75dJiQAvk/e k7jg== X-Gm-Message-State: AJIora8LsZr7ASoFcEZyX3hf85JZgQpFs3MGUpVCHH/1/av1u7i8PQ55 heJz8IyQTl/guMSmUvTTvRflxg== X-Google-Smtp-Source: AGRyM1tZ/tuzzEuYjxyhBIk6pqAW/CgmVerMDOF3aoAdK7DDenHSvDRfSrbmPmIdIqisEtD/k7IrLg== X-Received: by 2002:a05:6638:328d:b0:33d:5615:a95a with SMTP id f13-20020a056638328d00b0033d5615a95amr11039045jav.96.1657559924743; Mon, 11 Jul 2022 10:18:44 -0700 (PDT) Received: from [192.168.1.172] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id q17-20020a920511000000b002dc2a5abf44sm2856494ile.62.2022.07.11.10.18.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Jul 2022 10:18:44 -0700 (PDT) Message-ID: <2b644543-9a54-c6c4-fd94-f2a64d0701fa@kernel.dk> Date: Mon, 11 Jul 2022 11:18:42 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH for-next 3/4] io_uring: grow a field in struct io_uring_cmd Content-Language: en-US To: Kanchan Joshi , hch@lst.de, sagi@grimberg.me, kbusch@kernel.org Cc: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, asml.silence@gmail.com, joshiiitr@gmail.com, anuj20.g@samsung.com, gost.dev@samsung.com References: <20220711110155.649153-1-joshi.k@samsung.com> <20220711110155.649153-4-joshi.k@samsung.com> From: Jens Axboe In-Reply-To: <20220711110155.649153-4-joshi.k@samsung.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 7/11/22 5:01 AM, Kanchan Joshi wrote: > Use the leftover space to carve 'next' field that enables linking of > io_uring_cmd structs. Also introduce a list head and few helpers. > > This is in preparation to support nvme-mulitpath, allowing multiple > uring passthrough commands to be queued. It's not clear to me why we need linking at that level? -- Jens Axboe