[PULL,45/51] block: Pass BdrvChildRole in remaining cases

Commit Message

Kevin Wolf May 15, 2020, 12:45 p.m. UTC

From: Max Reitz <[e-mail]>

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 <[e-mail]>
Message-Id: <[e-mail]>
Reviewed-by: Eric Blake <[e-mail]>
Signed-off-by: Kevin Wolf <[e-mail]>
---
 block/block-backend.c | 11 +++++++----
 block/vvfat.c         |  4 +++-
 2 files changed, 10 insertions(+), 5 deletions(-)

Patch

diff --git a/block/block-backend.c b/block/block-backend.c
index f2e81af27d..6936b25c83 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -424,8 +424,9 @@  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;
@@ -835,8 +836,10 @@  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 e8848a0497..089abe1e29 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -3184,7 +3184,9 @@  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 | BDRV_CHILD_METADATA,
+                              false, errp);
     qobject_unref(options);
     if (!s->qcow) {
         ret = -EINVAL;