The only callers are other callback functions that already run with the graph
rdlock taken.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
 block.c                          | 1 +
 include/block/block_int-common.h | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/block.c b/block.c
index e54ed300d7..1a6ae08879 100644
--- a/block.c
+++ b/block.c
@@ -747,6 +747,7 @@ int coroutine_fn bdrv_co_delete_file(BlockDriverState *bs, Error **errp)
 
     IO_CODE();
     assert(bs != NULL);
+    assert_bdrv_graph_readable();
 
     if (!bs->drv) {
         error_setg(errp, "Block node '%s' is not opened", bs->filename);
diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h
index 03bd28e3c9..20308376c6 100644
--- a/include/block/block_int-common.h
+++ b/include/block/block_int-common.h
@@ -681,7 +681,7 @@ struct BlockDriver {
      */
     int coroutine_fn (*bdrv_co_flush)(BlockDriverState *bs);
 
-    /* Delete a created file. */
+    /* Delete a created file. Called with graph rdlock taken. */
     int coroutine_fn (*bdrv_co_delete_file)(BlockDriverState *bs,
                                             Error **errp);
 
-- 
2.31.1