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-rw-r--r--block/vhdx.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/block/vhdx.c b/block/vhdx.c
index 00777da91a..b20b1edf11 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1506,8 +1506,9 @@ exit:
  * There are 2 headers, and the highest sequence number will represent
  * the active header
  */
-static int vhdx_create_new_headers(BlockBackend *blk, uint64_t image_size,
-                                   uint32_t log_size)
+static int coroutine_fn GRAPH_RDLOCK
+vhdx_create_new_headers(BlockBackend *blk, uint64_t image_size,
+                        uint32_t log_size)
 {
     BlockDriverState *bs = blk_bs(blk);
     BdrvChild *child;
@@ -1897,8 +1898,8 @@ exit:
  *    .---- ~ ----------- ~ ------------ ~ ---------------- ~ -----------.
  *   1MB
  */
-static int coroutine_fn vhdx_co_create(BlockdevCreateOptions *opts,
-                                       Error **errp)
+static int coroutine_fn GRAPH_RDLOCK
+vhdx_co_create(BlockdevCreateOptions *opts, Error **errp)
 {
     BlockdevCreateOptionsVhdx *vhdx_opts;
     BlockBackend *blk = NULL;