block: Add BdrvChildRole to BdrvChild

For now, it is always set to 0.  Later patches in this series will
ensure that all callers pass an appropriate combination of flags.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-6-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2020-05-13 13:05:15 +02:00 committed by Kevin Wolf
parent 3284bcf430
commit 258b776515
31 changed files with 62 additions and 49 deletions

View file

@ -3183,7 +3183,7 @@ static int enable_write_target(BlockDriverState *bs, Error **errp)
options = qdict_new();
qdict_put_str(options, "write-target.driver", "qcow");
s->qcow = bdrv_open_child(s->qcow_filename, options, "write-target", bs,
&child_vvfat_qcow, false, errp);
&child_vvfat_qcow, 0, false, errp);
qobject_unref(options);
if (!s->qcow) {
ret = -EINVAL;