From 28d7a78996ae73e681d0e061a4be446ed2240c97 Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Mon, 19 Oct 2015 17:53:13 +0200
Subject: [PATCH] block: Make bdrv_is_inserted() recursive

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 <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/block.c b/block.c
index bdd33383e8..bb8c067328 100644
--- a/block.c
+++ b/block.c
@@ -3143,14 +3143,20 @@ void bdrv_invalidate_cache_all(Error **errp)
 bool bdrv_is_inserted(BlockDriverState *bs)
 {
     BlockDriver *drv = bs->drv;
+    BdrvChild *child;
 
     if (!drv) {
         return false;
     }
-    if (!drv->bdrv_is_inserted) {
-        return true;
+    if (drv->bdrv_is_inserted) {
+        return drv->bdrv_is_inserted(bs);
     }
-    return drv->bdrv_is_inserted(bs);
+    QLIST_FOREACH(child, &bs->children, next) {
+        if (!bdrv_is_inserted(child->bs)) {
+            return false;
+        }
+    }
+    return true;
 }
 
 /**