block: Make bdrv_parent_drained_begin/end public

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/block/block.h b/include/block/block.h
index 3e09222f5f..488a07ed67 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -573,6 +573,22 @@ void bdrv_io_plug(BlockDriverState *bs);
 void bdrv_io_unplug(BlockDriverState *bs);
 
 /**
+ * bdrv_parent_drained_begin:
+ *
+ * Begin a quiesced section of all users of @bs. This is part of
+ * bdrv_drained_begin.
+ */
+void bdrv_parent_drained_begin(BlockDriverState *bs);
+
+/**
+ * bdrv_parent_drained_end:
+ *
+ * End a quiesced section of all users of @bs. This is part of
+ * bdrv_drained_end.
+ */
+void bdrv_parent_drained_end(BlockDriverState *bs);
+
+/**
  * bdrv_drained_begin:
  *
  * Begin a quiesced section for exclusive access to the BDS, by disabling