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[RFC PATCH v3 22/27] qcow2: Clear the L2 bitmap when allocating a compre
From: |
Alberto Garcia |
Subject: |
[RFC PATCH v3 22/27] qcow2: Clear the L2 bitmap when allocating a compressed cluster |
Date: |
Sun, 22 Dec 2019 12:37:03 +0100 |
Compressed clusters always have the bitmap part of the extended L2
entry set to 0.
Signed-off-by: Alberto Garcia <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 ed291a4042..af0f01621c 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -789,6 +789,9 @@ 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
- [RFC PATCH v3 16/27] qcow2: Add subcluster support to zero_in_l2_slice(), (continued)
- [RFC PATCH v3 16/27] qcow2: Add subcluster support to zero_in_l2_slice(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 01/27] qcow2: Add calculate_l2_meta(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 24/27] qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters only, Alberto Garcia, 2019/12/22
- [RFC PATCH v3 11/27] qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 07/27] qcow2: Add subcluster-related fields to BDRVQcow2State, Alberto Garcia, 2019/12/22
- [RFC PATCH v3 18/27] qcow2: Add subcluster support to check_refcounts_l2(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 27/27] iotests: Add tests for qcow2 images with extended L2 entries, Alberto Garcia, 2019/12/22
- [RFC PATCH v3 17/27] qcow2: Add subcluster support to discard_in_l2_slice(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 10/27] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 03/27] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 22/27] qcow2: Clear the L2 bitmap when allocating a compressed cluster,
Alberto Garcia <=
- [RFC PATCH v3 08/27] qcow2: Add offset_to_sc_index(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 19/27] qcow2: Add subcluster support to expand_zero_clusters_in_l1(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 21/27] qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 06/27] qcow2: Add dummy has_subclusters() function, Alberto Garcia, 2019/12/22
- [RFC PATCH v3 02/27] qcow2: Split cluster_needs_cow() out of count_cow_clusters(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 13/27] qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC, Alberto Garcia, 2019/12/22
- [RFC PATCH v3 15/27] qcow2: Add subcluster support to qcow2_get_cluster_offset(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 20/27] qcow2: Fix offset calculation in handle_dependencies(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 23/27] qcow2: Add subcluster support to handle_alloc_space(), Alberto Garcia, 2019/12/22
- [RFC PATCH v3 05/27] qcow2: Document the Extended L2 Entries feature, Alberto Garcia, 2019/12/22