Make blk_root_get_parent_desc return different descriptions for
different blk's in worst case.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
 block/block-backend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/block-backend.c b/block/block-backend.c
index fa120630be..e5707a0f8c 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -141,7 +141,7 @@ static char *blk_root_get_parent_desc(BdrvChild *child)
     } else {
         /* TODO Callback into the BB owner for something more detailed */
         g_free(dev_id);
-        return g_strdup("a block device");
+        return g_strdup_printf("a block device %p", blk);
     }
 }
 
-- 
2.11.1


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