diff options
Diffstat (limited to 'block-qcow2.c')
| -rw-r--r-- | block-qcow2.c | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/block-qcow2.c b/block-qcow2.c index 0a1ddeb6e2..afbf7feb56 100644 --- a/block-qcow2.c +++ b/block-qcow2.c @@ -143,9 +143,6 @@ typedef struct BDRVQcowState { uint32_t crypt_method_header; AES_KEY aes_encrypt_key; AES_KEY aes_decrypt_key; - - int64_t highest_alloc; /* highest cluester allocated (in clusters) */ - uint64_t snapshots_offset; int snapshots_size; int nb_snapshots; @@ -173,8 +170,6 @@ static void free_clusters(BlockDriverState *bs, #ifdef DEBUG_ALLOC static void check_refcounts(BlockDriverState *bs); #endif -static void scan_refcount(BlockDriverState *bs, int64_t *high); - static int qcow_probe(const uint8_t *buf, int buf_size, const char *filename) { @@ -275,8 +270,6 @@ static int qcow_open(BlockDriverState *bs, const char *filename, int flags) if (refcount_init(bs) < 0) goto fail; - scan_refcount(bs, &s->highest_alloc); - /* read the backing file name */ if (header.backing_file_offset != 0) { len = header.backing_file_size; @@ -2163,29 +2156,6 @@ static int load_refcount_block(BlockDriverState *bs, return 0; } -static void scan_refcount(BlockDriverState *bs, int64_t *high) -{ - BDRVQcowState *s = bs->opaque; - int64_t refcnt_index, cluster_index, cluster_end, h = 0; - - for (refcnt_index=0; refcnt_index < s->refcount_table_size; refcnt_index++){ - if (s->refcount_table[refcnt_index] == 0) { - continue; - } - cluster_index = refcnt_index << (s->cluster_bits - REFCOUNT_SHIFT); - cluster_end = (refcnt_index + 1) << (s->cluster_bits - REFCOUNT_SHIFT); - for ( ; cluster_index < cluster_end; cluster_index++) { - if (get_refcount(bs, cluster_index) == 0) - /* do nothing -- reserved for free counting */; - else - h = cluster_index; - } - } - - if (high) - *high = (h+1); -} - static int get_refcount(BlockDriverState *bs, int64_t cluster_index) { BDRVQcowState *s = bs->opaque; @@ -2226,10 +2196,6 @@ retry: size, (s->free_cluster_index - nb_clusters) << s->cluster_bits); #endif - - if (s->highest_alloc < s->free_cluster_index) - s->highest_alloc = s->free_cluster_index; - return (s->free_cluster_index - nb_clusters) << s->cluster_bits; } |