diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2013-06-19 13:44:18 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-06-24 10:25:17 +0200 |
| commit | 6cfcb9b8b91d303ab51b78623f2299b5288d2d51 (patch) | |
| tree | d546c5428126fffa019295e4c1fb05a56100d12a /block/qcow2-snapshot.c | |
| parent | 492fdc6fbe17b2d45878e813e980f782ac260c30 (diff) | |
| download | qemu-6cfcb9b8b91d303ab51b78623f2299b5288d2d51.tar.gz | |
qcow2: Add refcount update reason to all callers
This adds a refcount update reason to all callers of update_refcounts(),
so that a follow-up patch can use this information to decide whether
clusters that reach a refcount of 0 should be discarded in the image
file.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/qcow2-snapshot.c')
| -rw-r--r-- | block/qcow2-snapshot.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index 992a5c865c..0caac9055f 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -262,7 +262,8 @@ static int qcow2_write_snapshots(BlockDriverState *bs) } /* free the old snapshot table */ - qcow2_free_clusters(bs, s->snapshots_offset, s->snapshots_size); + qcow2_free_clusters(bs, s->snapshots_offset, s->snapshots_size, + QCOW2_DISCARD_SNAPSHOT); s->snapshots_offset = snapshots_offset; s->snapshots_size = snapshots_size; return 0; @@ -569,7 +570,8 @@ int qcow2_snapshot_delete(BlockDriverState *bs, const char *snapshot_id) if (ret < 0) { return ret; } - qcow2_free_clusters(bs, sn.l1_table_offset, sn.l1_size * sizeof(uint64_t)); + qcow2_free_clusters(bs, sn.l1_table_offset, sn.l1_size * sizeof(uint64_t), + QCOW2_DISCARD_SNAPSHOT); /* must update the copied flag on the current cluster offsets */ ret = qcow2_update_snapshot_refcount(bs, s->l1_table_offset, s->l1_size, 0); |