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[PATCH v9 26/34] qcow2: Clear the L2 bitmap when allocating a compressed
From: |
Alberto Garcia |
Subject: |
[PATCH v9 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster |
Date: |
Sun, 28 Jun 2020 13:02:35 +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 2276cee6d6..deff838fe8 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -861,6 +861,9 @@ 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 v9 00/34] Add subcluster allocation to qcow2, Alberto Garcia, 2020/06/28
- [PATCH v9 10/34] qcow2: Add offset_to_sc_index(), Alberto Garcia, 2020/06/28
- [PATCH v9 07/34] qcow2: Document the Extended L2 Entries feature, Alberto Garcia, 2020/06/28
- [PATCH v9 08/34] qcow2: Add dummy has_subclusters() function, Alberto Garcia, 2020/06/28
- [PATCH v9 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster,
Alberto Garcia <=
- [PATCH v9 03/34] qcow2: Add calculate_l2_meta(), Alberto Garcia, 2020/06/28
- [PATCH v9 06/34] qcow2: Add get_l2_entry() and set_l2_entry(), Alberto Garcia, 2020/06/28
- [PATCH v9 02/34] qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset(), Alberto Garcia, 2020/06/28
- [PATCH v9 05/34] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied(), Alberto Garcia, 2020/06/28
- [PATCH v9 04/34] qcow2: Split cluster_needs_cow() out of count_cow_clusters(), Alberto Garcia, 2020/06/28
- [PATCH v9 13/34] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), Alberto Garcia, 2020/06/28
- [PATCH v9 24/34] qcow2: Add subcluster support to check_refcounts_l2(), Alberto Garcia, 2020/06/28