From patchwork Mon Sep 21 14:30:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alberto Garcia X-Patchwork-Id: 11790055 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B5A0516BC for ; Mon, 21 Sep 2020 14:35:36 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 331B720735 for ; Mon, 21 Sep 2020 14:35:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="fycE8xRF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 331B720735 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=igalia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:42244 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kKMul-0007EK-9y for patchwork-qemu-devel@patchwork.kernel.org; Mon, 21 Sep 2020 10:35:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47840) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kKMqb-0003jR-Ho; Mon, 21 Sep 2020 10:31:17 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:47073) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kKMqV-000489-Po; Mon, 21 Sep 2020 10:31:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:Message-Id:Date:Subject:Cc:To:From; bh=v4gKZaqKz1G+sKMjhNDHmeGnrnmkuq3yo8FI13XopGw=; b=fycE8xRFlW204ERnaYgctSRQD7P6MmH1BOI39smnolN/QBcskMzGEZLkLrl09ovInsf5eWnlfEsr1soE/Jl0cTezpNPLz9Hh3EQcQ6kOJ0qb63UmMX+ZAuTDQLVsc8CKTEfmBT3yFvXpSLKPT1tPx1WGPXZsa6Zl/+4tWbEIG/CVm8HKUL5JhWuF560O2vnrveI1dpDFx32q/f+HTug/IHNrAdtGNWqytzKOxlETeaIhmZAsAAj8DkGWSsKJWjIDRWBFKZLq0E96fRdRAX0KSwAD5hx1P7mr7OvR+NLVSOM9gHH1NO3WFdfC5S4SK2Xs8h/j9S/0VBRgO9FdIdkRlA==; Received: from [81.0.34.134] (helo=perseus.local) by fanzine.igalia.com with esmtpsa (Cipher TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim) id 1kKMqQ-0000Wd-Bd; Mon, 21 Sep 2020 16:31:06 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1kKMqD-0005yT-2a; Mon, 21 Sep 2020 16:30:53 +0200 From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [PATCH v4 0/2] Skip copy-on-write when allocating a zero cluster Date: Mon, 21 Sep 2020 16:30:48 +0200 Message-Id: X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Received-SPF: pass client-ip=178.60.130.6; envelope-from=berto@igalia.com; helo=fanzine.igalia.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/21 10:31:07 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Vladimir Sementsov-Ogievskiy , Alberto Garcia , qemu-block@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" I had to rebase the series due to conflicting changes on master. There are no other differences. Berto v4: - Fix rebase conflicts after cb8503159a v3: https://lists.gnu.org/archive/html/qemu-block/2020-09/msg00912.html - Add a new patch to improve the reporting of BDRV_BLOCK_ZERO [Vladimir] - Rename function to bdrv_co_is_zero_fast() [Vladimir, Kevin] - Don't call bdrv_common_block_status_above() if bytes == 0 v2: https://lists.gnu.org/archive/html/qemu-block/2020-08/msg01165.html - Add new, simpler API: bdrv_is_unallocated_or_zero_above() v1: https://lists.gnu.org/archive/html/qemu-block/2020-08/msg00403.html Alberto Garcia (2): qcow2: Report BDRV_BLOCK_ZERO more accurately in bdrv_co_block_status() qcow2: Skip copy-on-write when allocating a zero cluster include/block/block.h | 2 ++ block/io.c | 35 +++++++++++++++++++++++++++++++---- block/qcow2.c | 35 +++++++++++++++++++---------------- 3 files changed, 52 insertions(+), 20 deletions(-)