From patchwork Tue May 5 17:38:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alberto Garcia X-Patchwork-Id: 11529705 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5B5B981 for ; Tue, 5 May 2020 17:40:54 +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 30F6D20752 for ; Tue, 5 May 2020 17:40:54 +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="ZvFzBl/P" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 30F6D20752 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:38908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jW1Yr-0000Jp-CX for patchwork-qemu-devel@patchwork.kernel.org; Tue, 05 May 2020 13:40:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43994) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jW1XL-0006G3-HJ; Tue, 05 May 2020 13:39:19 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:38882) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jW1XJ-00089l-7W; Tue, 05 May 2020 13:39:19 -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=feJ5CefdIcoTetCGy9SxYuJA2zat3t1QrUrRsjHIdhY=; b=ZvFzBl/PEdsaNfANTIuZI6tc6LkkJPb+znxnopP+vfGmOt70a3t6WJviI03ODdbt9bgi7w7v86b5nFvSBhFK9L13VmXzMXEQ7EgqqPHzRWCdab8Etecm25D8DTCy5VgOGBXKkZfcxUJpSv1uDVWMDJqcxY3n2CJUe49vj2dMkOaysk+Uc2HeDswvKKykE+sLLgxxV5BJfVhHTASjStZ1PqqjmHrR3zgC7ow0b9AYLegCS39jWtG9rJADIVk2UjAM/pY/HcB955Ml/pBZvfwKu0WMvDih062ZDPoU45E6GzzLEZjG/FX4KpflSZvJglxHED5x1MqH1EhVU1Jsetzxeg==; Received: from static.160.43.0.81.ibercom.com ([81.0.43.160] helo=perseus.local) by fanzine.igalia.com with esmtpsa (Cipher TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim) id 1jW1Ws-00025C-D0; Tue, 05 May 2020 19:38:50 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1jW1Wc-00043n-ML; Tue, 05 May 2020 19:38:34 +0200 From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [PATCH v5 08/31] qcow2: Add dummy has_subclusters() function Date: Tue, 5 May 2020 19:38:08 +0200 Message-Id: <47c3829a10028930a36d471ca5b4b9fd342df470.1588699789.git.berto@igalia.com> 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 = 2020/05/05 13:38:50 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, Max Reitz Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This function will be used by the qcow2 code to check if an image has subclusters or not. At the moment this simply returns false. Once all patches needed for subcluster support are ready then QEMU will be able to create and read images with subclusters and this function will return the actual value. Signed-off-by: Alberto Garcia Reviewed-by: Eric Blake Reviewed-by: Max Reitz Reviewed-by: Vladimir Sementsov-Ogievskiy --- block/qcow2.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/block/qcow2.h b/block/qcow2.h index 97fbaba574..5e8036c3dd 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -492,6 +492,12 @@ typedef enum QCow2MetadataOverlap { #define INV_OFFSET (-1ULL) +static inline bool has_subclusters(BDRVQcow2State *s) +{ + /* FIXME: Return false until this feature is complete */ + return false; +} + static inline uint64_t get_l2_entry(BDRVQcow2State *s, uint64_t *l2_slice, int idx) {