Change qmp_blockdev_backup() to create and start a transaction instead
of calling do_blockdev_backup() directly.

Signed-off-by: Sergio Lopez <slp@redhat.com>
---
 blockdev.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index f94aaa98f0..152a0f7454 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -3689,13 +3689,13 @@ XDbgBlockGraph *qmp_x_debug_query_block_graph(Error **errp)
     return bdrv_get_xdbg_block_graph(errp);
 }
 
-void qmp_blockdev_backup(BlockdevBackup *arg, Error **errp)
+void qmp_blockdev_backup(BlockdevBackup *backup, Error **errp)
 {
-    BlockJob *job;
-    job = do_blockdev_backup(arg, NULL, errp);
-    if (job) {
-        job_start(&job->job);
-    }
+    TransactionAction action = {
+        .type = TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP,
+        .u.blockdev_backup.data = backup,
+    };
+    blockdev_do_action(&action, errp);
 }
 
 /* Parameter check and block job starting for drive mirroring.
-- 
2.23.0