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 4A359C433EF for ; Mon, 11 Jul 2022 17:18:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229638AbiGKRSs (ORCPT ); Mon, 11 Jul 2022 13:18:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229602AbiGKRSr (ORCPT ); Mon, 11 Jul 2022 13:18:47 -0400 Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56FEFCE37 for ; Mon, 11 Jul 2022 10:18:45 -0700 (PDT) Received: by mail-io1-xd31.google.com with SMTP id u20so5528006iob.8 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=Si9yU6ZBz3TDluoZdt7JcR4RdQOdC3JSJmQ7tWp+SW7vjlh1b1bEHGnYzv9R7zxtjT svHpWRkKfLuKZTjj0gugCAlDPZERa5jjWu95ZqSudgwjuraQdO7eyAP6YHXy8uzIDQGE MBrI/Jt42bIwVsJ6N2YMBvHCjeJpsJpEwhDbBLwuLhE86rXv/eteaWTcqUIDp4I79KN9 4gRiczby4RAU4N06j+iTf8ex6eshnN6vG1pmoRTfQOO0CSU+NehLdnkXO/U0mg7xTVvP pyDUMia2Q20jmN9KK40jAmiaJcK5S6D/azWOgkgXIAYF+GbGayFIHER06Hy6x6n6PKsd VaPg== X-Gm-Message-State: AJIora+J1g2vStB2GesRRNB+wa0v9hl9fjyh1wXOsB2rNufKr1jAXeED M7/UmP0Di4QJy3Mb5pcZ8OmaKnGAGEX69g== 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: linux-block@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