160     BdrvChild *fallback = bdrv_primary_child(bs);  in bdrv_snapshot_fallback_child()  local
166     /* We allow fallback only to primary child */  in bdrv_snapshot_fallback_child()
167     if (!fallback) {  in bdrv_snapshot_fallback_child()
174      * fallback.  in bdrv_snapshot_fallback_child()
179             child != fallback)  in bdrv_snapshot_fallback_child()
185     return fallback;  in bdrv_snapshot_fallback_child()
241     BdrvChild *fallback;  in bdrv_snapshot_goto()  local
265     fallback = bdrv_snapshot_fallback_child(bs);  in bdrv_snapshot_goto()
268     if (fallback) {  in bdrv_snapshot_goto()
272         BlockDriverState *fallback_bs = fallback->bs;  in bdrv_snapshot_goto()
273         char *subqdict_prefix = g_strdup_printf("%s.", fallback->name);  in bdrv_snapshot_goto()
284         /* Force .bdrv_open() below to re-attach fallback_bs on fallback */  in bdrv_snapshot_goto()
285         qdict_put_str(options, fallback->name,  in bdrv_snapshot_goto()
295         bdrv_unref_child(bs, fallback);  in bdrv_snapshot_goto()
311          * fallback was a primary child. It was closed above and set to NULL,  in bdrv_snapshot_goto()