trace: [tcg] Include event definitions in "trace.h"

[qemu.git] / block / qcow.c

diff --git a/block/qcow.c b/block/qcow.c
index 1f2bac8a5ff92c1f6c132fb44fb84d65eec01af7..a874056cf33e5a0f7e6ee2f51fd50bc85e8dff7d 100644 (file)
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -941,6 +941,7 @@ static BlockDriver bdrv_qcow = {
     .bdrv_reopen_prepare    = qcow_reopen_prepare,
     .bdrv_create            = qcow_create,
     .bdrv_has_zero_init     = bdrv_has_zero_init_1,
+    .supports_backing       = true,
 
     .bdrv_co_readv          = qcow_co_readv,
     .bdrv_co_writev         = qcow_co_writev,