From nobody Mon Feb 9 04:31:38 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=1593342308; cv=none; d=zohomail.com; s=zohoarc; b=U4Y/YOqTZj+AAAfpbHBE+ksf9flx4kaQJCMskW6adqXrpIV9FQRqkyNjEpujMLMXgLa+wOaB39HynpIonZTCv6jrYfqCyIJ0QLPQRZ7+lHjzBCHVH7xioD8Vmahtd87kAUnfuJsuRxFftxZJhCNNRgop/AlsSYmmhG+LDzRonbk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593342308; 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=ZWlri76rYhfJSPuAj5NARikXscYghdN6m0arnnUf7Pg+vOGx/HOR4GOuWK1M9NGrT8+ADFgJpvnCD2CEFEljmWDcYwyKsJwRV9FwqNgwWPgCr7FjWUrKUJizfyeZCCathuGgYgbGZ76Hee0fNDkX+y10jc8ELt7NURdArr2YI8Y= 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 1593342308461799.1073402804361; Sun, 28 Jun 2020 04:05:08 -0700 (PDT) Received: from localhost ([::1]:45000 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jpV7S-0000YM-UF for importer@patchew.org; Sun, 28 Jun 2020 07:05:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47730) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jpV62-0006uR-3r; Sun, 28 Jun 2020 07:03:38 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:42235) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jpV5y-0000WX-17; Sun, 28 Jun 2020 07:03:37 -0400 Received: from 26.red-79-158-236.dynamicip.rima-tde.net ([79.158.236.26] helo=perseus.local) by fanzine.igalia.com with esmtpsa (Cipher TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim) id 1jpV5X-0002gW-Gs; Sun, 28 Jun 2020 13:03:07 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1jpV5H-00038R-Ok; Sun, 28 Jun 2020 13:02:51 +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=bKi/OLMUwjmPG5wbTuFYXmLc9dv0t71DKUeNPHUOkDu5Rh4BMvU3Larr55ocbd8ZxVVhWTTQOJN6oinHEcqUP5FPzG7BuLJy5bMhSNaMB1zSBdGqTQlM/531wk1WCenpNSTiid1YilFk5i0dUXjH5egiJh6qB8t1lmhB1F2vqoQV8Ws3R9ds41ZJzPH9wFTr2x93eWLolLlX9b/Eg42+zdfo66y4JT6FMoama8ZuxmdyD5Noo8ROjqI2WkNpJuxwfgOhN2bx6FgnOD31oF2uXY1m1126yAZ3iQ/stCN5+6sqYRVH9bEqBAQmzpVNJFwDjhBHHG/kU9EUCGRaPx5yXQ==; From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [PATCH v9 10/34] qcow2: Add offset_to_sc_index() Date: Sun, 28 Jun 2020 13:02:19 +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 = 2020/06/28 07:03:08 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" 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