From patchwork Sat Oct 26 21:25:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alberto Garcia X-Patchwork-Id: 11213871 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 BD646112B for ; Sat, 26 Oct 2019 21:33:30 +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 9175A20863 for ; Sat, 26 Oct 2019 21:33:30 +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="OU3u8Avr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9175A20863 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]:42524 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iOTgf-0001we-1V for patchwork-qemu-devel@patchwork.kernel.org; Sat, 26 Oct 2019 17:33:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60031) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iOTZj-00004s-EM for qemu-devel@nongnu.org; Sat, 26 Oct 2019 17:26:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iOTZi-0005Lk-Ca for qemu-devel@nongnu.org; Sat, 26 Oct 2019 17:26:19 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:42487) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iOTZg-0005Et-8Y; Sat, 26 Oct 2019 17:26:16 -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=ne3oe81fqJGBRCtc4R9D7qJYrDbbBX1uoz/3g2YvNFw=; b=OU3u8AvrwrXEQnJZEvHfeGJnqoaTxsF0RCcEecH4Tt8ngQb8vTvobNmZl8pByabg0d7ufg53Nk9OXCL+gpasj2Au696NW35pz9dI3tnNWg/RonOxnC8HQiDJyQbnxJUpO9zij6WcpD3oUXS7xtNEbJ3j+dtRFX+b6E/LHcaoZZlrGKWSnTVveXB0PDGFf77dHUXL51X6XkGSf91wqIXRBN6tKKoIGTsA0tDWAAtOfFnZaRgIZXgsO4VfOKM5BuQ7VjRf+Ae/hCt3W8OLrrWyTBfzOT9aEkqLyR+5bOXetNVb720yD5PRzbUe97oGH8F/l4jNAyI7mBdvgBIgk4zA1Q==; Received: from 87-100-137-117.bb.dnainternet.fi ([87.100.137.117] helo=perseus.local) by fanzine.igalia.com with esmtpsa (Cipher TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim) id 1iOTZJ-000468-6e; Sat, 26 Oct 2019 23:25:53 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1iOTZ0-0001Ph-W7; Sun, 27 Oct 2019 00:25:35 +0300 From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [RFC PATCH v2 21/26] qcow2: Clear the L2 bitmap when allocating a compressed cluster Date: Sun, 27 Oct 2019 00:25:23 +0300 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy] X-Received-From: 178.60.130.6 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 , Anton Nefedov , Alberto Garcia , qemu-block@nongnu.org, Max Reitz , Vladimir Sementsov-Ogievskiy , "Denis V . Lunev" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Compressed clusters always have the bitmap part of the extended L2 entry set to 0. Signed-off-by: Alberto Garcia --- block/qcow2-cluster.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index acb7226e03..3ba8a98073 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -783,6 +783,7 @@ int qcow2_alloc_compressed_cluster_offset(BlockDriverState *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); + set_l2_bitmap(s, l2_slice, l2_index, 0); qcow2_cache_put(s->l2_table_cache, (void **) &l2_slice); *host_offset = cluster_offset & s->cluster_offset_mask;