[Qemu-block] [PATCH v3 06/38] block: Make bdrv_is_inserted() recursive

[Max Reitz]

If bdrv_is_inserted() is called on the top level BDS, it should make
sure all nodes in the BDS tree are actually inserted.

Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
---
 block.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/block.c b/block.c
index fdb5612..d6479e6 100644
--- a/block.c
+++ b/block.c
@@ -2997,10 +2997,9 @@ bool bdrv_is_inserted(BlockDriverState *bs)
     if (!drv) {
         return false;
     }
-    if (!drv->bdrv_is_inserted) {
-        return true;
-    }
-    return drv->bdrv_is_inserted(bs);
+    return (!drv->bdrv_is_inserted || drv->bdrv_is_inserted(bs)) &&
+           (!bs->file              || bdrv_is_inserted(bs->file)) &&
+           (!bs->backing_hd        || bdrv_is_inserted(bs->backing_hd));
 }
 
 /**
-- 
2.4.1