The function bdrv_all_delete_snapshot() calls bdrv_drain_all_begin(),
which must be called with the graph unlocked.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
 include/block/snapshot.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/block/snapshot.h b/include/block/snapshot.h
index 304cc6ea61..2316a43e26 100644
--- a/include/block/snapshot.h
+++ b/include/block/snapshot.h
@@ -90,9 +90,9 @@ int bdrv_snapshot_load_tmp_by_id_or_name(BlockDriverState *bs,
 
 bool bdrv_all_can_snapshot(bool has_devices, strList *devices,
                            Error **errp);
-int bdrv_all_delete_snapshot(const char *name,
-                             bool has_devices, strList *devices,
-                             Error **errp);
+int GRAPH_UNLOCKED
+bdrv_all_delete_snapshot(const char *name, bool has_devices, strList *devices,
+                         Error **errp);
 int bdrv_all_goto_snapshot(const char *name,
                            bool has_devices, strList *devices,
                            Error **errp);
-- 
2.39.5