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qcow2: Remove useless count_contiguous_clusters() parameter

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All callers pass start = 0, and it's doubtful if any other value would
actually do what you expect. Remove the parameter.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
This commit is contained in:
Kevin Wolf 2013-09-27 13:36:11 +02:00
parent 22f0dd29af
commit 61653008ad
1 changed files with 6 additions and 6 deletions
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12
block/qcow2-cluster.c
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@ -281,7 +281,7 @@ fail:
* cluster which may require a different handling)
*/
static int count_contiguous_clusters(uint64_t nb_clusters, int cluster_size,
uint64_t *l2_table, uint64_t start, uint64_t stop_flags)
uint64_t *l2_table, uint64_t stop_flags)
{
int i;
uint64_t mask = stop_flags | L2E_OFFSET_MASK | QCOW2_CLUSTER_COMPRESSED;
@ -293,14 +293,14 @@ static int count_contiguous_clusters(uint64_t nb_clusters, int cluster_size,
assert(qcow2_get_cluster_type(first_entry) != QCOW2_CLUSTER_COMPRESSED);
for (i = start; i < start + nb_clusters; i++) {
for (i = 0; i < nb_clusters; i++) {
uint64_t l2_entry = be64_to_cpu(l2_table[i]) & mask;
if (offset + (uint64_t) i * cluster_size != l2_entry) {
break;
}
}
return (i - start);
return i;
}
static int count_contiguous_free_clusters(uint64_t nb_clusters, uint64_t *l2_table)
@ -493,7 +493,7 @@ int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset,
return -EIO;
}
c = count_contiguous_clusters(nb_clusters, s->cluster_size,
&l2_table[l2_index], 0, QCOW_OFLAG_ZERO);
&l2_table[l2_index], QCOW_OFLAG_ZERO);
*cluster_offset = 0;
break;
case QCOW2_CLUSTER_UNALLOCATED:
@ -504,7 +504,7 @@ int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset,
case QCOW2_CLUSTER_NORMAL:
/* how many allocated clusters ? */
c = count_contiguous_clusters(nb_clusters, s->cluster_size,
&l2_table[l2_index], 0, QCOW_OFLAG_ZERO);
&l2_table[l2_index], QCOW_OFLAG_ZERO);
*cluster_offset &= L2E_OFFSET_MASK;
break;
default:
@ -934,7 +934,7 @@ static int handle_copied(BlockDriverState *bs, uint64_t guest_offset,
/* We keep all QCOW_OFLAG_COPIED clusters */
keep_clusters =
count_contiguous_clusters(nb_clusters, s->cluster_size,
&l2_table[l2_index], 0,
&l2_table[l2_index],
QCOW_OFLAG_COPIED | QCOW_OFLAG_ZERO);
assert(keep_clusters <= nb_clusters);