block: mark bdrv_set_backing_hd() as GRAPH_UNLOCKED

The function bdrv_set_backing_hd() calls bdrv_drain_all_begin(), which
must be called with the graph unlocked.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Message-ID: <20250530151125.955508-29-f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/include/block/block-global-state.h b/include/block/block-global-state.h
index 84a2a4ecd5c4370eeba8cd13f9e0d416032c0205..009b9ac94655f3b19d414874f48d045cfacfeab4 100644 (file)
--- a/include/block/block-global-state.h
+++ b/include/block/block-global-state.h
@@ -100,8 +100,9 @@ bdrv_open_blockdev_ref(BlockdevRef *ref, Error **errp);
 BlockDriverState * coroutine_fn no_co_wrapper
 bdrv_co_open_blockdev_ref(BlockdevRef *ref, Error **errp);
 
-int bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd,
-                        Error **errp);
+int GRAPH_UNLOCKED
+bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd,
+                    Error **errp);
 int GRAPH_WRLOCK
 bdrv_set_backing_hd_drained(BlockDriverState *bs, BlockDriverState *backing_hd,
                             Error **errp);