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 X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA42AC5517A for ; Tue, 3 Nov 2020 14:30:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 51DBF22370 for ; Tue, 3 Nov 2020 14:30:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=toxicpanda-com.20150623.gappssmtp.com header.i=@toxicpanda-com.20150623.gappssmtp.com header.b="1Z5fUf3i" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729714AbgKCOae (ORCPT ); Tue, 3 Nov 2020 09:30:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729571AbgKCO3B (ORCPT ); Tue, 3 Nov 2020 09:29:01 -0500 Received: from mail-qk1-x742.google.com (mail-qk1-x742.google.com [IPv6:2607:f8b0:4864:20::742]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67580C0613D1 for ; Tue, 3 Nov 2020 06:29:01 -0800 (PST) Received: by mail-qk1-x742.google.com with SMTP id b18so14745699qkc.9 for ; Tue, 03 Nov 2020 06:29:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toxicpanda-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=TOlkltDeMWiHpxhxjB+NtRek+OXrY4CzXqQq5l2DQf0=; b=1Z5fUf3igTnFYyRdWghFPecYmRHSJCNe0LOOOUafIhr4V8EhBrx/DsBP+MrhsS9l8x DWp61nw+MQa0yR3bkyKY5bfYj/7q6q1vZEEGUOxRfo6S5uI8qGlvAiOjMjdrQ09qylv2 et0O0ApQ7/x3abLZrxVlpe72Qs/jad3HvF7AjHD8ePryqvF99SNLTfu5eJy5MfBuUmaC d5VkMbi2JnRLXWhwBPEsoyPqzxSN8l0Gsue7LfCWU5og+J8/FWEcIULMqCjhtaNo/+Ip V9N5hwe4WPMMkYSDkeQ7eZ0NbLBYtKZjfOL0HQc0uJBGYHGafGTKoP1Fi01N62U44dPA SPGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=TOlkltDeMWiHpxhxjB+NtRek+OXrY4CzXqQq5l2DQf0=; b=m5KMrr5axVX3wdqh7GlwFje3DsKQEtG9ohOetEsEThcDt3x7Z23we85ulWn4FjOMp0 aEHiN9bIF7k3NjRJ5fj4yumBYP1bw8DW3ujwM89KrrA4MUyzv6lvC0CIR3ioftsBUOC2 eDvkHhfo5nq8ZYezc5WF81YhTBNjFL1EcynNnOLyMLrzSd/SI0q0ZigpIkezKK8q35Qp 8gc+MGdvTW4nWZ+QOdael0wQz/0cDKnkSNPuXPApEcRAaJmtXbD51pXLVlE5lvLNATvi AbNV7F/nXiaiTZbDTI7KG2hOhPxSBBKSqX6H1E/hErfjW8xVgVp2/Dt4KvrfDvVjifyC RsIA== X-Gm-Message-State: AOAM531FV/BZIb264D0oOH6r09hU1IP+YK1TMA8BXZL/RJdpmvBgH32K OJrFnboFOkqCeVhBnyZGKzGu3p7hlm1WU1uP X-Google-Smtp-Source: ABdhPJy7k3BKKR8Ex+ucPR35FrMI7hP23NIWikLnLZEgLna+MOMwW6fMlPz248Vz2LqfNFMELjjtyQ== X-Received: by 2002:a37:bdc5:: with SMTP id n188mr19684610qkf.95.1604413740147; Tue, 03 Nov 2020 06:29:00 -0800 (PST) Received: from [192.168.1.45] (cpe-174-109-172-136.nc.res.rr.com. [174.109.172.136]) by smtp.gmail.com with ESMTPSA id m2sm5705682qtu.62.2020.11.03.06.28.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Nov 2020 06:28:59 -0800 (PST) Subject: Re: [PATCH v9 17/41] btrfs: do sequential extent allocation in ZONED mode To: Naohiro Aota , linux-btrfs@vger.kernel.org, dsterba@suse.com Cc: hare@suse.com, linux-fsdevel@vger.kernel.org References: <0b0775b15f3fd97b04b3b3f1650701330e9392b5.1604065695.git.naohiro.aota@wdc.com> From: Josef Bacik Message-ID: Date: Tue, 3 Nov 2020 09:28:58 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <0b0775b15f3fd97b04b3b3f1650701330e9392b5.1604065695.git.naohiro.aota@wdc.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 10/30/20 9:51 AM, Naohiro Aota wrote: > This commit implements a sequential extent allocator for the ZONED mode. > This allocator just needs to check if there is enough space in the block > group. Therefor the allocator never manages bitmaps or clusters. Also add > ASSERTs to the corresponding functions. > > Actually, with zone append writing, it is unnecessary to track the > allocation offset. It only needs to check space availability. But, by > tracking the offset and returning the offset as an allocated region, we can > skip modification of ordered extents and checksum information when there is > no IO reordering. > > Signed-off-by: Naohiro Aota Reviewed-by: Josef Bacik Thanks, Josef