block: Mark bdrv_first_blk() and bdrv_is_root_node() GRAPH_RDLOCK

[mirror_qemu.git] / block / io.c

diff --git a/block/io.c b/block/io.c
index 9e170929a7e460bb4ed4063d32de38458b7cfe88..5821a4d1f525f72700e260bd65757739982781c1 100644 (file)
--- a/block/io.c
+++ b/block/io.c
@@ -2330,6 +2330,7 @@ int bdrv_flush_all(void)
     int result = 0;
 
     GLOBAL_STATE_CODE();
+    GRAPH_RDLOCK_GUARD_MAINLOOP();
 
     /*
      * bdrv queue is managed by record/replay,