block: Split bdrv_new_root() off bdrv_new()

Creating an anonymous BDS can't fail.  Make that obvious.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/qemu-io.c b/qemu-io.c
index 66cf3ef4be..d131dc5baa 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -58,7 +58,7 @@ static int openfile(char *name, int flags, int growable, QDict *opts)
         return 1;
     }
 
-    qemuio_bs = bdrv_new("hda", &error_abort);
+    qemuio_bs = bdrv_new_root("hda", &error_abort);
 
     if (growable) {
         flags |= BDRV_O_PROTOCOL;