From: Wen Congyang <we...@cn.fujitsu.com>
We need to access the parent BDS to get the root BDS.
Signed-off-by: Wen Congyang <we...@cn.fujitsu.com>
Signed-off-by: Changlong Xie <xiecl.f...@cn.fujitsu.com>
---
block.c | 1 +
include/block/block_int.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/block.c b/block.c
index 1589c0d..c9c913e 100644
--- a/block.c
+++ b/block.c
@@ -1204,6 +1204,7 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs,
BdrvChild *child = g_new(BdrvChild, 1);
*child = (BdrvChild) {
.bs = child_bs,
+ .parent = parent_bs,
.name = g_strdup(child_name),
.role = child_role,
};
diff --git a/include/block/block_int.h b/include/block/block_int.h
index ebe8b1e..19c02b6 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -361,6 +361,7 @@ extern const BdrvChildRole child_format;
struct BdrvChild {
BlockDriverState *bs;
+ BlockDriverState *parent;
char *name;
const BdrvChildRole *role;
QLIST_ENTRY(BdrvChild) next;
--
1.9.3
