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-rw-r--r--include/block/block_int.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h
index d6415b53c1..50902531b7 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -885,6 +885,9 @@ struct BlockDriverState {
 
     /* Only read/written by whoever has set active_flush_req to true.  */
     unsigned int flushed_gen;             /* Flushed write generation */
+
+    /* BdrvChild links to this node may never be frozen */
+    bool never_freeze;
 };
 
 struct BlockBackendRootState {