From patchwork Sat Oct 26 21:25:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alberto Garcia X-Patchwork-Id: 11213929 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 94B34112C for ; Sat, 26 Oct 2019 22:30:27 +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 67FB120863 for ; Sat, 26 Oct 2019 22:30:27 +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="sImEZbbk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 67FB120863 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]:43210 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iOUZm-00008Y-Hh for patchwork-qemu-devel@patchwork.kernel.org; Sat, 26 Oct 2019 18:30:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60303) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iOTZw-0000XU-NX 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 ) id 1iOTZv-0005RY-Fh for qemu-devel@nongnu.org; Sat, 26 Oct 2019 17:26:32 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:42500) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iOTZu-0005F0-V9; 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=+xwWu6J6i01LK6MbAXCYF+RWfBl8802Gr2qymDso1KI=; b=sImEZbbkG53YVA24MupgydUL/6GJXz+Ca4xJ6MscYNtSKHSXAL3pxMmJn8//EKvgNAxKOaoskeSu4xzKrGgfc6IOZHtqHBEIYW7UXlkrPudASGMZPeVeoW13Di7inx8i2pKEDiWm8XkjS++AALBdxN0ft4oiIoY+2+WhYq8IA9E8N4DJAFeyRYJ9+FPUcZDDNHcwngsNL5UBjKpv8a2pXR4zLqUwCzlcDQgwy9eaErpe5zcwyi+qFy0NL8AjAsegqdMts32MYo8nq+BTI6jdYWNYPvOU5TGOEqZUdRn5XZuJ2ZTGvRq33qSDtzmPVkqmOjqlPq50z5smdIR6TfXp+g==; 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 1iOTZI-00045y-OF; Sat, 26 Oct 2019 23:25:52 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1iOTZ0-0001PP-IW; Sun, 27 Oct 2019 00:25:34 +0300 From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [RFC PATCH v2 12/26] qcow2: Handle QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER Date: Sun, 27 Oct 2019 00:25:14 +0300 Message-Id: <2a6b34635cac78e76150a72c69669b3d9ec0fb8c.1572125022.git.berto@igalia.com> 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" In the previous patch we added a new QCow2ClusterType named QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER. There is a couple of places where this new value needs to be handled, and that is what this patch does. Signed-off-by: Alberto Garcia --- block/qcow2.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index ab40ae36ea..0261e87709 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1938,8 +1938,8 @@ static int coroutine_fn qcow2_co_block_status(BlockDriverState *bs, *pnum = bytes; - if ((ret == QCOW2_CLUSTER_NORMAL || ret == QCOW2_CLUSTER_ZERO_ALLOC) && - !s->crypto) { + if ((ret == QCOW2_CLUSTER_NORMAL || ret == QCOW2_CLUSTER_ZERO_ALLOC || + ret == QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER) && !s->crypto) { index_in_cluster = offset & (s->cluster_size - 1); *map = cluster_offset | index_in_cluster; *file = s->data_file->bs; @@ -1947,7 +1947,8 @@ static int coroutine_fn qcow2_co_block_status(BlockDriverState *bs, } if (ret == QCOW2_CLUSTER_ZERO_PLAIN || ret == QCOW2_CLUSTER_ZERO_ALLOC) { status |= BDRV_BLOCK_ZERO; - } else if (ret != QCOW2_CLUSTER_UNALLOCATED) { + } else if (ret != QCOW2_CLUSTER_UNALLOCATED && + ret != QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER) { status |= BDRV_BLOCK_DATA; } if (s->metadata_preallocation && (status & BDRV_BLOCK_DATA) && @@ -2117,6 +2118,7 @@ static coroutine_fn int qcow2_co_preadv_task(BlockDriverState *bs, g_assert_not_reached(); case QCOW2_CLUSTER_UNALLOCATED: + case QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER: assert(bs->backing); /* otherwise handled in qcow2_co_preadv_part */ BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO); @@ -2187,7 +2189,8 @@ static coroutine_fn int qcow2_co_preadv_part(BlockDriverState *bs, if (ret == QCOW2_CLUSTER_ZERO_PLAIN || ret == QCOW2_CLUSTER_ZERO_ALLOC || - (ret == QCOW2_CLUSTER_UNALLOCATED && !bs->backing)) + (ret == QCOW2_CLUSTER_UNALLOCATED && !bs->backing) || + (ret == QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER && !bs->backing)) { qemu_iovec_memset(qiov, qiov_offset, 0, cur_bytes); } else { @@ -3701,6 +3704,7 @@ static coroutine_fn int qcow2_co_pwrite_zeroes(BlockDriverState *bs, nr = s->cluster_size; ret = qcow2_get_cluster_offset(bs, offset, &nr, &off); if (ret != QCOW2_CLUSTER_UNALLOCATED && + ret != QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER && ret != QCOW2_CLUSTER_ZERO_PLAIN && ret != QCOW2_CLUSTER_ZERO_ALLOC) { qemu_co_mutex_unlock(&s->lock); @@ -3771,6 +3775,7 @@ qcow2_co_copy_range_from(BlockDriverState *bs, switch (ret) { case QCOW2_CLUSTER_UNALLOCATED: + case QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER: if (bs->backing && bs->backing->bs) { int64_t backing_length = bdrv_getlength(bs->backing->bs); if (src_offset >= backing_length) {