From nobody Tue Feb 10 10:04:19 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=virtuozzo.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1529433726079727.7345625254806; Tue, 19 Jun 2018 11:42:06 -0700 (PDT) Received: from localhost ([::1]:44422 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fVLZt-0004ia-CW for importer@patchew.org; Tue, 19 Jun 2018 14:42:05 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47510) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fVLTB-0007iO-NF for qemu-devel@nongnu.org; Tue, 19 Jun 2018 14:35:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fVLTA-0005Yj-9D for qemu-devel@nongnu.org; Tue, 19 Jun 2018 14:35:09 -0400 Received: from relay.sw.ru ([185.231.240.75]:38924) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fVLT4-0005JI-Jw; Tue, 19 Jun 2018 14:35:02 -0400 Received: from msk-vpn.virtuozzo.com ([195.214.232.6] helo=kvm.sw.ru) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1fVLT1-0004dh-6o; Tue, 19 Jun 2018 21:34:59 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Tue, 19 Jun 2018 21:34:53 +0300 Message-Id: <20180619183457.371081-4-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20180619183457.371081-1-vsementsov@virtuozzo.com> References: <20180619183457.371081-1-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH 3/7] block/qcow2-refcount: check_refcounts_l2: refactor compressed case X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, mreitz@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Separate offset and size of compressed cluster. Signed-off-by: Vladimir Sementsov-Ogievskiy --- block/qcow2-refcount.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index 28d21bedc3..42167b7040 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -1564,7 +1564,7 @@ static int check_refcounts_l2(BlockDriverState *bs, B= drvCheckResult *res, BDRVQcow2State *s =3D bs->opaque; uint64_t *l2_table, l2_entry; uint64_t next_contiguous_offset =3D 0; - int i, l2_size, nb_csectors, ret; + int i, l2_size, ret; =20 /* Read L2 table from disk */ l2_size =3D s->l2_size * sizeof(uint64_t); @@ -1583,6 +1583,9 @@ static int check_refcounts_l2(BlockDriverState *bs, B= drvCheckResult *res, =20 switch (qcow2_get_cluster_type(l2_entry)) { case QCOW2_CLUSTER_COMPRESSED: + { + int64_t csize, coffset; + /* Compressed clusters don't have QCOW_OFLAG_COPIED */ if (l2_entry & QCOW_OFLAG_COPIED) { fprintf(stderr, "ERROR: coffset=3D0x%" PRIx64 ": " @@ -1593,12 +1596,13 @@ static int check_refcounts_l2(BlockDriverState *bs,= BdrvCheckResult *res, } =20 /* Mark cluster as used */ - nb_csectors =3D ((l2_entry >> s->csize_shift) & - s->csize_mask) + 1; - l2_entry &=3D s->cluster_offset_mask; + csize =3D (((l2_entry >> s->csize_shift) & s->csize_mask) + 1)= * + BDRV_SECTOR_SIZE; + coffset =3D l2_entry & s->cluster_offset_mask & + ~(BDRV_SECTOR_SIZE - 1); ret =3D qcow2_inc_refcounts_imrt(bs, res, refcount_table, refcount_table_= size, - l2_entry & ~511, nb_csectors * = 512); + coffset, csize); if (ret < 0) { goto fail; } @@ -1615,6 +1619,7 @@ static int check_refcounts_l2(BlockDriverState *bs, B= drvCheckResult *res, res->bfi.fragmented_clusters++; } break; + } =20 case QCOW2_CLUSTER_ZERO_ALLOC: case QCOW2_CLUSTER_NORMAL: --=20 2.11.1