Signed-off-by: Benoit Canet <ben...@irqsave.net>
---
block/qcow2-refcount.c | 17 ++++++++++-------
block/qcow2.h | 3 +++
2 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index b32738f..3bd8f37 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -520,9 +520,9 @@ fail:
* If the return value is non-negative, it is the new refcount of the cluster.
* If it is negative, it is -errno and indicates an error.
*/
-static int update_cluster_refcount(BlockDriverState *bs,
- int64_t cluster_index,
- int addend)
+int qcow2_update_cluster_refcount(BlockDriverState *bs,
+ int64_t cluster_index,
+ int addend)
{
BDRVQcowState *s = bs->opaque;
int ret;
@@ -649,7 +649,7 @@ int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size)
if (free_in_cluster == 0)
s->free_byte_offset = 0;
if ((offset & (s->cluster_size - 1)) != 0)
- update_cluster_refcount(bs, offset >> s->cluster_bits, 1);
+ qcow2_update_cluster_refcount(bs, offset >> s->cluster_bits, 1);
} else {
offset = qcow2_alloc_clusters(bs, s->cluster_size);
if (offset < 0) {
@@ -659,7 +659,7 @@ int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size)
if ((cluster_offset + s->cluster_size) == offset) {
/* we are lucky: contiguous data */
offset = s->free_byte_offset;
- update_cluster_refcount(bs, offset >> s->cluster_bits, 1);
+ qcow2_update_cluster_refcount(bs, offset >> s->cluster_bits, 1);
s->free_byte_offset += size;
} else {
s->free_byte_offset = offset;
@@ -795,7 +795,9 @@ int qcow2_update_snapshot_refcount(BlockDriverState *bs,
} else {
uint64_t cluster_index = (offset & L2E_OFFSET_MASK) >>
s->cluster_bits;
if (addend != 0) {
- refcount = update_cluster_refcount(bs,
cluster_index, addend);
+ refcount = qcow2_update_cluster_refcount(bs,
+ cluster_index,
+ addend);
} else {
refcount = get_refcount(bs, cluster_index);
}
@@ -827,7 +829,8 @@ int qcow2_update_snapshot_refcount(BlockDriverState *bs,
if (addend != 0) {
- refcount = update_cluster_refcount(bs, l2_offset >>
s->cluster_bits, addend);
+ refcount = qcow2_update_cluster_refcount(bs,
+ l2_offset >> s->cluster_bits, addend);
} else {
refcount = get_refcount(bs, l2_offset >> s->cluster_bits);
}
diff --git a/block/qcow2.h b/block/qcow2.h
index 7754065..3238083 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -568,6 +568,9 @@ int qcow2_update_snapshot_refcount(BlockDriverState *bs,
int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix);
+int qcow2_update_cluster_refcount(BlockDriverState *bs,
+ int64_t cluster_index,
+ int addend);
/* qcow2-cluster.c functions */
int qcow2_grow_l1_table(BlockDriverState *bs, int min_size, bool exact_size);
--
1.7.10.4
