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[PATCH v11 26/34] qcow2: Clear the L2 bitmap when allocating a compresse
From: |
Alberto Garcia |
Subject: |
[PATCH v11 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster |
Date: |
Fri, 10 Jul 2020 18:13:08 +0200 |
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>
---
block/qcow2-cluster.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 5bdbb65e7b..6b5d0698d0 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;
--
2.20.1
- [PATCH v11 09/34] qcow2: Add subcluster-related fields to BDRVQcow2State, (continued)
- [PATCH v11 09/34] qcow2: Add subcluster-related fields to BDRVQcow2State, Alberto Garcia, 2020/07/10
- [PATCH v11 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters(), Alberto Garcia, 2020/07/10
- [PATCH v11 10/34] qcow2: Add offset_to_sc_index(), Alberto Garcia, 2020/07/10
- [PATCH v11 14/34] qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type(), Alberto Garcia, 2020/07/10
- [PATCH v11 32/34] qcow2: Allow preallocation and backing files if extended_l2 is set, Alberto Garcia, 2020/07/10
- [PATCH v11 22/34] qcow2: Add subcluster support to zero_in_l2_slice(), Alberto Garcia, 2020/07/10
- [PATCH v11 24/34] qcow2: Add subcluster support to check_refcounts_l2(), Alberto Garcia, 2020/07/10
- [PATCH v11 25/34] qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2(), Alberto Garcia, 2020/07/10
- [PATCH v11 17/34] qcow2: Add cluster type parameter to qcow2_get_host_offset(), Alberto Garcia, 2020/07/10
- [PATCH v11 12/34] qcow2: Add l2_entry_size(), Alberto Garcia, 2020/07/10
- [PATCH v11 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster,
Alberto Garcia <=
- [PATCH v11 28/34] qcow2: Add subcluster support to qcow2_co_pwrite_zeroes(), Alberto Garcia, 2020/07/10
- [PATCH v11 21/34] qcow2: Add subcluster support to qcow2_get_host_offset(), Alberto Garcia, 2020/07/10
- [PATCH v11 29/34] qcow2: Add subcluster support to qcow2_measure(), Alberto Garcia, 2020/07/10
- [PATCH v11 34/34] iotests: Add tests for qcow2 images with extended L2 entries, Alberto Garcia, 2020/07/10
- [PATCH v11 23/34] qcow2: Add subcluster support to discard_in_l2_slice(), Alberto Garcia, 2020/07/10
- [PATCH v11 16/34] qcow2: Add qcow2_cluster_is_allocated(), Alberto Garcia, 2020/07/10
- [PATCH v11 33/34] qcow2: Assert that expand_zero_clusters_in_l1() does not support subclusters, Alberto Garcia, 2020/07/10
- [PATCH v11 30/34] qcow2: Add prealloc field to QCowL2Meta, Alberto Garcia, 2020/07/10
- [PATCH v11 27/34] qcow2: Add subcluster support to handle_alloc_space(), Alberto Garcia, 2020/07/10
- [PATCH v11 31/34] qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit, Alberto Garcia, 2020/07/10