From nobody Mon Feb 9 12:27:19 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=1591801890; cv=none; d=zohomail.com; s=zohoarc; b=HD12Z+H1ynp7lewPSHNX9BYO/pAKq0pzxvsEC5LwxZIAenw36DM4ehCfEKW3l8WKKdHaFVRfUTPZcTnDnVeZLO+/riPLYbUbqA9gMctZLAaPaYZhKp6deB0EX1ep7aL6nFOEU7WH2Kq5rZjsIgIJWUV5G5uo8z0tqX0ZVn4u9+Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1591801890; 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=DWFzz4T+AhoA6h3Vs/ROK38xw63e6XfJbmyzdTE6EKY=; b=KbZc7Aj1Kwm8B83UuHTUvyD0mh9GbMo5kE1hkchxud0MJaeZqsIOAxi2pn5D2GR/htC0syI/BuT26GjSbKH4yTwQufIxI1m5gEIQYhLIffwXKWDG9mQpoQ9Wlog/gbxu8HxbN5leWXCak+rSXMGceFKY+W6/iIj7oggRJg8CHOE= 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 1591801890571120.0799984014767; Wed, 10 Jun 2020 08:11:30 -0700 (PDT) Received: from localhost ([::1]:42494 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jj2O0-0003tA-TY for importer@patchew.org; Wed, 10 Jun 2020 11:11:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36062) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jj2Gs-0002dt-U0; Wed, 10 Jun 2020 11:04:07 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:58019) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jj2Gr-0006vr-5Z; Wed, 10 Jun 2020 11:04:06 -0400 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 1jj2GR-0007go-5G; Wed, 10 Jun 2020 17:03:39 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1jj2GB-0007Mp-Uz; Wed, 10 Jun 2020 17:03:23 +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=DWFzz4T+AhoA6h3Vs/ROK38xw63e6XfJbmyzdTE6EKY=; b=O0zQyyawnXvo1D8s5tpWg27zkTDAuctzABLps5Dis7WRMH1Fahq5VMilW9sJbjA435BtBls6v5EY2h5WcpTlCshNhtdrrVeRy18CYu1LtRePG6lLsjaoqy+3rjPYOQA9lDT/BmA84rOgXgJJXBLNoMsQ6ofj/jd2qmyfsRmvt8AwKdnff/pKhN/CAVG0wGXx0oaz6hV8eWiJ421gn5JTgdj7NimAy1QCdPkfTbK6I44Dov8YRKw4zWcwn3+u6HA6SBEObdc5TWWXBrxCf8xIPf2zjAgrRm3jiuFKk9BmPK4sWgx0BxuZE4qF/avCbcC5RAnJTEp1WmKEm1YuWHfzaw==; From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [PATCH v8 10/34] qcow2: Add offset_to_sc_index() Date: Wed, 10 Jun 2020 17:02:48 +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 = 2020/06/10 11:03:39 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=_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" For a given offset, return the subcluster number within its cluster (i.e. with 32 subclusters per cluster it returns a number between 0 and 31). Signed-off-by: Alberto Garcia Reviewed-by: Max Reitz Reviewed-by: Vladimir Sementsov-Ogievskiy --- block/qcow2.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/block/qcow2.h b/block/qcow2.h index eee4c8de9c..2503374677 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -581,6 +581,11 @@ static inline int offset_to_l2_slice_index(BDRVQcow2St= ate *s, int64_t offset) return (offset >> s->cluster_bits) & (s->l2_slice_size - 1); } =20 +static inline int offset_to_sc_index(BDRVQcow2State *s, int64_t offset) +{ + return (offset >> s->subcluster_bits) & (s->subclusters_per_cluster - = 1); +} + static inline int64_t qcow2_vm_state_offset(BDRVQcow2State *s) { return (int64_t)s->l1_vm_state_index << (s->cluster_bits + s->l2_bits); --=20 2.20.1