[Qemu-block] [PATCH v6 06/42] qcow2: Implement .bdrv_storage_child()

[Max Reitz]

Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
 block/qcow2.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/block/qcow2.c b/block/qcow2.c
index 039bdc2f7e..f8570d6210 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -5086,6 +5086,13 @@ void qcow2_signal_corruption(BlockDriverState *bs, bool 
fatal, int64_t offset,
     s->signaled_corruption = true;
 }
 
+static BdrvChild *qcow2_storage_child(BlockDriverState *bs)
+{
+    BDRVQcow2State *s = bs->opaque;
+
+    return s->data_file;
+}
+
 static QemuOptsList qcow2_create_opts = {
     .name = "qcow2-create-opts",
     .head = QTAILQ_HEAD_INITIALIZER(qcow2_create_opts.head),
@@ -5232,6 +5239,8 @@ BlockDriver bdrv_qcow2 = {
     .bdrv_reopen_bitmaps_rw = qcow2_reopen_bitmaps_rw,
     .bdrv_can_store_new_dirty_bitmap = qcow2_can_store_new_dirty_bitmap,
     .bdrv_remove_persistent_dirty_bitmap = 
qcow2_remove_persistent_dirty_bitmap,
+
+    .bdrv_storage_child = qcow2_storage_child,
 };
 
 static void bdrv_qcow2_init(void)
-- 
2.21.0