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[PATCH v5 25/31] qcow2: Clear the L2 bitmap when allocating a compressed
From: |
Alberto Garcia |
Subject: |
[PATCH v5 25/31] qcow2: Clear the L2 bitmap when allocating a compressed cluster |
Date: |
Tue, 5 May 2020 19:38:25 +0200 |
Compressed clusters always have the bitmap part of the extended L2
entry set to 0.
Signed-off-by: Alberto Garcia <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
---
block/qcow2-cluster.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 4544a40aa0..0a295076a3 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -800,6 +800,9 @@ 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
- Re: [PATCH v5 15/31] qcow2: Add qcow2_cluster_is_allocated(), (continued)
- [PATCH v5 04/31] qcow2: Split cluster_needs_cow() out of count_cow_clusters(), Alberto Garcia, 2020/05/05
- [PATCH v5 23/31] qcow2: Add subcluster support to check_refcounts_l2(), Alberto Garcia, 2020/05/05
- [PATCH v5 25/31] qcow2: Clear the L2 bitmap when allocating a compressed cluster,
Alberto Garcia <=
- [PATCH v5 28/31] qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit, Alberto Garcia, 2020/05/05
- [PATCH v5 05/31] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied(), Alberto Garcia, 2020/05/05
- [PATCH v5 26/31] qcow2: Add subcluster support to handle_alloc_space(), Alberto Garcia, 2020/05/05
- [PATCH v5 20/31] qcow2: Add subcluster support to qcow2_get_host_offset(), Alberto Garcia, 2020/05/05
- [PATCH v5 13/31] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), Alberto Garcia, 2020/05/05