[PATCH for-5.0 30/31] block: Pass BdrvChildRole in remaining cases

[Max Reitz <mreitz@redhat.com>]

These calls have no real use for the child role yet, but it will not
harm to give one.

Notably, the bdrv_root_attach_child() call in blockjob.c is left
unmodified because there is not much the generic BlockJob object wants
from its children.

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 block/block-backend.c | 11 +++++++----
 block/vvfat.c         |  2 +-
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/block/block-backend.c b/block/block-backend.c
index 98f3167fa6..988633178a 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -401,8 +401,9 @@ BlockBackend *blk_new_open(const char *filename, const char *reference,
         return NULL;
     }
 
-    blk->root = bdrv_root_attach_child(bs, "root", &child_root, 0, blk->ctx,
-                                       perm, BLK_PERM_ALL, blk, errp);
+    blk->root = bdrv_root_attach_child(bs, "root", &child_root,
+                                       BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
+                                       blk->ctx, perm, BLK_PERM_ALL, blk, errp);
     if (!blk->root) {
         blk_unref(blk);
         return NULL;
@@ -812,8 +813,10 @@ int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp)
 {
     ThrottleGroupMember *tgm = &blk->public.throttle_group_member;
     bdrv_ref(bs);
-    blk->root = bdrv_root_attach_child(bs, "root", &child_root, 0, blk->ctx,
-                                       blk->perm, blk->shared_perm, blk, errp);
+    blk->root = bdrv_root_attach_child(bs, "root", &child_root,
+                                       BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
+                                       blk->ctx, blk->perm, blk->shared_perm,
+                                       blk, errp);
     if (blk->root == NULL) {
         return -EPERM;
     }
diff --git a/block/vvfat.c b/block/vvfat.c
index b8096763d5..8fa8ddff98 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -3193,7 +3193,7 @@ 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, 0, false, errp);
+                              &child_vvfat_qcow, BDRV_CHILD_DATA, false, errp);
     qobject_unref(options);
     if (!s->qcow) {
         ret = -EINVAL;
-- 
2.23.0