From patchwork Mon May 25 18:08:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alberto Garcia X-Patchwork-Id: 281926 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 11BB0C433E1 for ; Mon, 25 May 2020 18:22:52 +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 DAB6D20776 for ; Mon, 25 May 2020 18:22:51 +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="DUF/FPNl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DAB6D20776 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+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:34976 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jdHkR-00005o-0t for qemu-devel@archiver.kernel.org; Mon, 25 May 2020 14:22:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45246) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jdHXv-000453-OE; Mon, 25 May 2020 14:09:55 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:51070) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jdHXq-0007pv-6t; Mon, 25 May 2020 14:09:55 -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:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=jdA6WaY7hKoW016heKIZFDBwkSoL0B2SxxYO4r5/VA8=; b=DUF/FPNlx6eBU/3dijc5Np5n7wOOOxVftxKaaDqrhhRJr7NnVIwbUVnkN3vEQICQKgjc34NB7UN0AY8bjS50q01PHKiKlaKawMyzO9deWgq8zwaorCVUmTTzdBJNamQYbN6FI3CE6Jt/qMn2o6le3991JBRLJBSZ9GGamSQEojhY+S2Qvfz/8Uk/mudwgQxYiWCE5zVyqQThEQwE6gSjgexsBMwDy9jO3YoilqK0h3eQDgVm+gq33k0vzGggbR4WBOPu05yClk7bY917u+LMnw7vp0G25Xy9uhAZM0YBW49MyQxFDE2w4wSc/tI5WwNeOONpjb3Z1EB/ywWZlLQXDw==; Received: from [81.0.38.199] (helo=perseus.local) by fanzine.igalia.com with esmtpsa (Cipher TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim) id 1jdHXP-00088Z-J9; Mon, 25 May 2020 20:09:23 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1jdHXA-0002Nb-AM; Mon, 25 May 2020 20:09:08 +0200 From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [PATCH v7 26/32] qcow2: Clear the L2 bitmap when allocating a compressed cluster Date: Mon, 25 May 2020 20:08:51 +0200 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: 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 = 2020/05/25 14:09:23 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_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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, Derek Su , Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Compressed clusters always have the bitmap part of the extended L2 entry set to 0. Signed-off-by: Alberto Garcia Reviewed-by: Max Reitz --- block/qcow2-cluster.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index 2276cee6d6..deff838fe8 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -861,6 +861,9 @@ int qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs, BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE_COMPRESSED); qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_slice); set_l2_entry(s, l2_slice, l2_index, cluster_offset); + if (has_subclusters(s)) { + set_l2_bitmap(s, l2_slice, l2_index, 0); + } qcow2_cache_put(s->l2_table_cache, (void **) &l2_slice); *host_offset = cluster_offset & s->cluster_offset_mask;