diff options
Diffstat (limited to 'block/qcow2-refcount.c')
| -rw-r--r-- | block/qcow2-refcount.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index 168fc32e7b..8c17c0e3aa 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -861,8 +861,24 @@ static int QEMU_WARN_UNUSED_RESULT update_refcount(BlockDriverState *bs, } s->set_refcount(refcount_block, block_index, refcount); - if (refcount == 0 && s->discard_passthrough[type]) { - update_refcount_discard(bs, cluster_offset, s->cluster_size); + if (refcount == 0) { + void *table; + + table = qcow2_cache_is_table_offset(bs, s->refcount_block_cache, + offset); + if (table != NULL) { + qcow2_cache_put(bs, s->refcount_block_cache, &refcount_block); + qcow2_cache_discard(bs, s->refcount_block_cache, table); + } + + table = qcow2_cache_is_table_offset(bs, s->l2_table_cache, offset); + if (table != NULL) { + qcow2_cache_discard(bs, s->l2_table_cache, table); + } + + if (s->discard_passthrough[type]) { + update_refcount_discard(bs, cluster_offset, s->cluster_size); + } } } |