diff options
Diffstat (limited to 'block/snapshot.c')
| -rw-r--r-- | block/snapshot.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/snapshot.c b/block/snapshot.c index e22ac3eac6..b86b5b24ad 100644 --- a/block/snapshot.c +++ b/block/snapshot.c @@ -281,7 +281,9 @@ int bdrv_snapshot_goto(BlockDriverState *bs, } /* .bdrv_open() will re-attach it */ + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, fallback); + bdrv_graph_wrunlock(); ret = bdrv_snapshot_goto(fallback_bs, snapshot_id, errp); open_ret = drv->bdrv_open(bs, options, bs->open_flags, &local_err); |