BlockBackends use it to get a back pointer from BdrvChild to
BlockBackend in any BdrvChildRole callbacks.
Signed-off-by: Kevin Wolf <kw...@redhat.com>
---
block/block-backend.c | 2 ++
include/block/block_int.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/block/block-backend.c b/block/block-backend.c
index 7d49d99..b72a73d 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -133,6 +133,7 @@ BlockBackend *blk_new_with_bs(Error **errp)
bs = bdrv_new_root();
blk->root = bdrv_root_attach_child(bs, "root", &child_root);
+ blk->root->opaque = blk;
bs->blk = blk;
return blk;
}
@@ -458,6 +459,7 @@ void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs)
assert(!blk->root && !bs->blk);
bdrv_ref(bs);
blk->root = bdrv_root_attach_child(bs, "root", &child_root);
+ blk->root->opaque = blk;
bs->blk = blk;
notifier_list_notify(&blk->insert_bs_notifiers, blk);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 8f37279..ddadb7f 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -370,6 +370,7 @@ struct BdrvChild {
BlockDriverState *bs;
char *name;
const BdrvChildRole *role;
+ void *opaque;
QLIST_ENTRY(BdrvChild) next;
QLIST_ENTRY(BdrvChild) next_parent;
};
--
1.8.3.1
