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Diffstat (limited to 'tests/unit/test-bdrv-graph-mod.c')
-rw-r--r--tests/unit/test-bdrv-graph-mod.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/unit/test-bdrv-graph-mod.c b/tests/unit/test-bdrv-graph-mod.c
index b077f0e3e3..567db99e4f 100644
--- a/tests/unit/test-bdrv-graph-mod.c
+++ b/tests/unit/test-bdrv-graph-mod.c
@@ -202,9 +202,9 @@ static void test_should_update_child(void)
 
     blk_insert_bs(root, bs, &error_abort);
 
+    bdrv_graph_wrlock_drained();
     bdrv_set_backing_hd(target, bs, &error_abort);
 
-    bdrv_graph_wrlock_drained();
     g_assert(target->backing->bs == bs);
     bdrv_attach_child(filter, target, "target", &child_of_bds,
                       BDRV_CHILD_DATA, &error_abort);