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[PULL 26/34] qcow2: Clear the L2 bitmap when allocating a compressed clu
From: |
Max Reitz |
Subject: |
[PULL 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster |
Date: |
Tue, 25 Aug 2020 10:33:03 +0200 |
From: Alberto Garcia <berto@igalia.com>
Compressed clusters always have the bitmap part of the extended L2
entry set to 0.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id:
<04455b3de5dfeb9d1cfe1fc7b02d7060a6e09710.1594396418.git.berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2-cluster.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 816ddc7639..1e84bd8e2e 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -862,6 +862,9 @@ 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);
+ if (has_subclusters(s)) {
+ 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;
--
2.26.2
- [PULL 25/34] qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2(), (continued)
- [PULL 25/34] qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2(), Max Reitz, 2020/08/25
- [PULL 24/34] qcow2: Add subcluster support to check_refcounts_l2(), Max Reitz, 2020/08/25
- [PULL 28/34] qcow2: Add subcluster support to qcow2_co_pwrite_zeroes(), Max Reitz, 2020/08/25
- [PULL 29/34] qcow2: Add subcluster support to qcow2_measure(), Max Reitz, 2020/08/25
- [PULL 30/34] qcow2: Add prealloc field to QCowL2Meta, Max Reitz, 2020/08/25
- [PULL 32/34] qcow2: Allow preallocation and backing files if extended_l2 is set, Max Reitz, 2020/08/25
- [PULL 31/34] qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit, Max Reitz, 2020/08/25
- [PULL 33/34] qcow2: Assert that expand_zero_clusters_in_l1() does not support subclusters, Max Reitz, 2020/08/25
- [PULL 17/34] qcow2: Add cluster type parameter to qcow2_get_host_offset(), Max Reitz, 2020/08/25
- [PULL 34/34] iotests: Add tests for qcow2 images with extended L2 entries, Max Reitz, 2020/08/25
- [PULL 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster,
Max Reitz <=
- Re: [PULL 00/34] Block patches, Peter Maydell, 2020/08/25