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 1B734C433EF for ; Sun, 1 May 2022 14:25:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234055AbiEAO2h (ORCPT ); Sun, 1 May 2022 10:28:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230014AbiEAO2g (ORCPT ); Sun, 1 May 2022 10:28:36 -0400 Received: from mail-pj1-x1032.google.com (mail-pj1-x1032.google.com [IPv6:2607:f8b0:4864:20::1032]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6CC531FCE2 for ; Sun, 1 May 2022 07:25:09 -0700 (PDT) Received: by mail-pj1-x1032.google.com with SMTP id z5-20020a17090a468500b001d2bc2743c4so10975969pjf.0 for ; Sun, 01 May 2022 07:25:09 -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 :references:from:in-reply-to:content-transfer-encoding; bh=FWzgMnjjhuCZxyPLDBZY/wj6xABgV0dD7l6DqPXLJ68=; b=GiZI+2mjTA9j8mZ6/IlGJmoJzRh/zxCbaotbzjYT7qm0bcp4MCHzy6IsyxCdfTxZ7b mLWQlCdJXYgG7vEptEl1kVYQHyL/NMXYeVGzUcAhecYGJpW6CY2yJk6xxFWdfR0rqW0c P5zX19Vx+PXkivgeYh4Zg5AHCG6T37QD6nIxXGyD0HyOpezpwr7jt5k9W1anO2PbwxP4 XKzlPyy/KORPFJTN6NpmeOToe0uTaYqNY0Jo6IxIUjS+jKVPUK/cJE+7TshJuDSbpWpL pym0kLZEpx2VWeHqxkdfTanb2EQNuaW6u+xnOcsVy3s9x076PBtT/QlK/hQdvuUf3f5w RU1Q== 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:references:from:in-reply-to :content-transfer-encoding; bh=FWzgMnjjhuCZxyPLDBZY/wj6xABgV0dD7l6DqPXLJ68=; b=Yx5iOtMq5h6wZ8p10n4HjJKVyxiMXy5gNkcpdZf+CZuKWOOEwnofxfPtPOZDWkd5S8 BkTQn70Ef5VMgUPtcQS+YOUTDb4ZK0WwjtY/IvKscEQvFY2GCpZjV0etydy4gmx3UJ+j J9ZEgeveMXf/qUA4YCc09j3gWKRZpHbCZgm381/NBspmBHgUx3CDDPu112H2ExBJ3ds7 LjgF1Uk+ajkYOAE+fNZDO5PInszQdIHAHITcPDQke3gFU7/lHoZq6+cAQhHcPqY8IFWt 2RQFIlsjVXEpMM1dBKd4QOY64IPiQQKxiIYjwQswyDytfZN1xPwqSBAhoTZnRkFILtVj e6hA== X-Gm-Message-State: AOAM5330H/H7blP12RfgqjpqkOKx0z4wYYyrssqHMSogiSLQnmYF9pCO UDsnDJkYAwpp8aNH5YeQ2tWTyXnxrYwSZeEp X-Google-Smtp-Source: ABdhPJyTZcgbKF+xzrsNTAWJMUynmu6NlCBsfjAIbBJU9SDMxTMQRgKzhEWK++kQ7RerNXDcHWRyXA== X-Received: by 2002:a17:90a:ce13:b0:1d9:acbe:7ede with SMTP id f19-20020a17090ace1300b001d9acbe7edemr13589707pju.16.1651415108875; Sun, 01 May 2022 07:25:08 -0700 (PDT) Received: from [192.168.1.100] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id p11-20020a1709028a8b00b0015e8d4eb297sm2958043plo.225.2022.05.01.07.25.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 01 May 2022 07:25:08 -0700 (PDT) Message-ID: Date: Sun, 1 May 2022 08:25:07 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: [PATCHSET v2 RFC 0/11] Add support for ring mapped provided buffers Content-Language: en-US To: Pavel Begunkov , io-uring@vger.kernel.org References: <20220429175635.230192-1-axboe@kernel.dk> <69fc3830-8b2e-7b40-ad68-394c7c9fbf60@gmail.com> <170e4200-fb7b-9496-4fcf-48d64212702e@gmail.com> From: Jens Axboe In-Reply-To: <170e4200-fb7b-9496-4fcf-48d64212702e@gmail.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 5/1/22 7:39 AM, Pavel Begunkov wrote: > I'd suggest for mapped pbuffers to have an old plain array with > sequential indexing, just how we do it for fixed buffers. Do normal > and mapped pbuffers share something that would prevent it? Ah yes, we could do that. Registering it returns the group ID instead of providing it up front. -- Jens Axboe