diff options
| author | Alberto Garcia <berto@igalia.com> | 2020-09-08 16:08:28 +0200 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2020-09-15 11:05:13 +0200 |
| commit | 3fec237fca3bfdd4b6cc4749a9fa737062fb6611 (patch) | |
| tree | 3a62c694d7c05e68242dbf1780a02c857a25974f /block/qcow2-refcount.c | |
| parent | 1a52b73dbad8f0b72ba1df30a817926983037565 (diff) | |
qcow2: Make qcow2_free_any_clusters() free only one cluster
This function takes an L2 entry and a number of clusters to free.
Although in principle it can free any type of cluster (using the L2
entry to determine its type) in practice the API is broken because
compressed clusters have a variable size and there is no way to free
more than one without having the L2 entry of each one of them.
The good news all callers are passing nb_clusters=1 so we can simply
get rid of that parameter.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-Id: <77cea0f4616f921d37e971b3c5b18a2faa24b173.1599573989.git.berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/qcow2-refcount.c')
| -rw-r--r-- | block/qcow2-refcount.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index 51e9778ed8..8e649b008e 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -1157,8 +1157,8 @@ void qcow2_free_clusters(BlockDriverState *bs, * Free a cluster using its L2 entry (handles clusters of all types, e.g. * normal cluster, compressed cluster, etc.) */ -void qcow2_free_any_clusters(BlockDriverState *bs, uint64_t l2_entry, - int nb_clusters, enum qcow2_discard_type type) +void qcow2_free_any_cluster(BlockDriverState *bs, uint64_t l2_entry, + enum qcow2_discard_type type) { BDRVQcow2State *s = bs->opaque; QCow2ClusterType ctype = qcow2_get_cluster_type(bs, l2_entry); @@ -1169,7 +1169,7 @@ void qcow2_free_any_clusters(BlockDriverState *bs, uint64_t l2_entry, ctype == QCOW2_CLUSTER_ZERO_ALLOC)) { bdrv_pdiscard(s->data_file, l2_entry & L2E_OFFSET_MASK, - nb_clusters << s->cluster_bits); + s->cluster_size); } return; } @@ -1192,7 +1192,7 @@ void qcow2_free_any_clusters(BlockDriverState *bs, uint64_t l2_entry, l2_entry & L2E_OFFSET_MASK); } else { qcow2_free_clusters(bs, l2_entry & L2E_OFFSET_MASK, - nb_clusters << s->cluster_bits, type); + s->cluster_size, type); } break; case QCOW2_CLUSTER_ZERO_PLAIN: |