Message ID | 755edeae312aee4b1f06563484db1365272b430d.1572125022.git.berto@igalia.com |
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State | New |
Headers | show
Return-Path: <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=<UNKNOWN>) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=igalia.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=igalia.com header.i=@igalia.com header.b="M3Xp2CXF"; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 470wjv2lnxz9sPL for <incoming@patchwork.ozlabs.org>; Sun, 27 Oct 2019 09:33:22 +1100 (AEDT) Received: from localhost ([::1]:43238 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>) id 1iOUca-00061z-GA for incoming@patchwork.ozlabs.org; Sat, 26 Oct 2019 18:33:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60299) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <berto@igalia.com>) id 1iOTZw-0000Wj-JO for qemu-devel@nongnu.org; Sat, 26 Oct 2019 17:26:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <berto@igalia.com>) id 1iOTZv-0005RL-Ew for qemu-devel@nongnu.org; Sat, 26 Oct 2019 17:26:32 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:42518) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from <berto@igalia.com>) id 1iOTZu-0005F9-UX; Sat, 26 Oct 2019 17:26:31 -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=gM1HDHFjmOmPSS37VcAha72pwhGVFgdram6nRVFEymM=; b=M3Xp2CXF+zmM75f7HHVsdPR+O0040gh5v4EjBeNvy3xz3qcpZF4YqHkHj3qn0hB2olR4sp2YwvOtRFAz4v02sOMpXFkYgppjqIQr7PXiEtOa9visE4UVKV83bIniR1GgC10miTOXpGZlQlbVvE7yeGFEf1wxTaqpbzhepZE2b96ZCdsOtnphvtNgMkxLFl1Ih7kT2+Jg1VAGPIFR+hQiZ3Cp6dKDSRT6rRrgUG0sTy/5/GAPVjZ+m6isuny4yeI1KEGY3DcSe9Id+03sNGCrsSp8Iqd/BHfEvFX8xJN1lvRD6WSDFST3ejGM7GBRYfCaN0Gkng6R1Wb2MzqYUqXdQg==; 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-00046B-9J; Sat, 26 Oct 2019 23:25:53 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from <berto@igalia.com>) id 1iOTZ1-0001Pl-2h; Sun, 27 Oct 2019 00:25:35 +0300 From: Alberto Garcia <berto@igalia.com> To: qemu-devel@nongnu.org Subject: [RFC PATCH v2 23/26] qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters only Date: Sun, 27 Oct 2019 00:25:25 +0300 Message-Id: <755edeae312aee4b1f06563484db1365272b430d.1572125022.git.berto@igalia.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <cover.1572125022.git.berto@igalia.com> References: <cover.1572125022.git.berto@igalia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: Kevin Wolf <kwolf@redhat.com>, Anton Nefedov <anton.nefedov@virtuozzo.com>, Alberto Garcia <berto@igalia.com>, qemu-block@nongnu.org, Max Reitz <mreitz@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>, "Denis V . Lunev" <den@openvz.org> Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> |
Series |
Add subcluster allocation to qcow2
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expand
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diff --git a/block/qcow2.c b/block/qcow2.c index 01322ca449..537569ce88 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -3704,6 +3704,12 @@ static coroutine_fn int qcow2_co_pwrite_zeroes(BlockDriverState *bs, bytes = s->cluster_size; nr = s->cluster_size; ret = qcow2_get_cluster_offset(bs, offset, &nr, &off); + /* TODO: allow zeroing separate subclusters, we only allow + * zeroing full clusters at the moment. */ + if (nr != bytes) { + qemu_co_mutex_unlock(&s->lock); + return -ENOTSUP; + } if (ret != QCOW2_CLUSTER_UNALLOCATED && ret != QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER && ret != QCOW2_CLUSTER_ZERO_PLAIN &&
Ideally it should be possible to zero individual subclusters using this function, but this is currently not implemented. Signed-off-by: Alberto Garcia <berto@igalia.com> --- block/qcow2.c | 6 ++++++ 1 file changed, 6 insertions(+)