From nobody Mon Feb 9 01:51:35 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1593792455; cv=none; d=zohomail.com; s=zohoarc; b=N1GpQac2ik6ecFf6/+suDI6jxLlNa2KD0Co6mmerrnLsZb7dTacmFSybIRTCh58b7CIxN2tUkipfs6SuH0ghLXESqx00UKoN2m9P+Gptj9JO+XKHe3hTm0of0WqAqh2I3Z77iJnW5Lh1Zn1zdrX6s/xqadPwwvOXlLF38cyLonE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593792455; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=OWKv8itI14gMinFfoeWuhSr8+zShFcCCdZ5FAMbstjA=; b=DOILVmBKOPrvkQvL0+6bvYMtv3HQYLRIrI7lMjA5C7SwQ9UDlMBatho1YgNRliWEvO2zrPZcPNk5N6A/MyDdDnWrzVRY72xILlibGHq8RiZOSQnEdfvbtJV9VQf5j6uvMi6Anwd3n0Lp5PKBXzb5fmNAzUf41GNSW9hpV8Y7XhM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1593792455095248.42802888463848; Fri, 3 Jul 2020 09:07:35 -0700 (PDT) Received: from localhost ([::1]:47154 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jrODt-0001r5-Tl for importer@patchew.org; Fri, 03 Jul 2020 12:07:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59140) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jrO5o-0003VO-AE; Fri, 03 Jul 2020 11:59:12 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:41735) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jrO5k-0007Rw-Cb; Fri, 03 Jul 2020 11:59:11 -0400 Received: from [81.0.49.0] (helo=perseus.local) by fanzine.igalia.com with esmtpsa (Cipher TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim) id 1jrO5L-0001Qi-J3; Fri, 03 Jul 2020 17:58:43 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1jrO52-0007QN-BC; Fri, 03 Jul 2020 17:58:24 +0200 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=OWKv8itI14gMinFfoeWuhSr8+zShFcCCdZ5FAMbstjA=; b=RNg0KU3f+rXVRA0p7xn9Jb/n6XuaJVtJeVd05ZJ/jii7qTOg37OVSdpSYDTMhChCNAKxEgdVe3BGl2/LZnXOa2i5f7ZXh9K5T90OnkSH0IHbGSEsPR0j50zjmxPmRRyQmrO1ZxnGL/f/b3Yg1oD1c64Pqkt00yDHExRIwD3BA0y8t4VHhiN8PQaOwA3ZkLd/OwDK4+hXSHvcXITxYAAJ0pQ4TuG9CvD8GXoRL4+aX8gWb207HuRJHE/lIqWJmWU8iH44ff4syvS8eMMn0NbDfgEuvmKqvipY1JIBHOV/gptqzMSDPfxS9Sc+d4guxoz8jo8cdk3iUBOsAn70GNSgEg==; From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [PATCH v10 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster Date: Fri, 3 Jul 2020 17:58:12 +0200 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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 = 2020/07/03 11:21:00 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, 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" 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 5bdbb65e7b..6b5d0698d0 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -862,6 +862,9 @@ int qcow2_alloc_compressed_cluster_offset(BlockDriverSt= ate *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); =20 *host_offset =3D cluster_offset & s->cluster_offset_mask; --=20 2.20.1