1 files changed, 3 insertions, 1 deletions
diff --git a/block.c b/block.c
index 0ac5b163d2..10346b5011 100644
--- a/block.c
+++ b/block.c
@@ -103,6 +103,8 @@ static int bdrv_reopen_prepare(BDRVReopenState *reopen_state,
 static void bdrv_reopen_commit(BDRVReopenState *reopen_state);
 static void bdrv_reopen_abort(BDRVReopenState *reopen_state);
 
+static bool bdrv_backing_overridden(BlockDriverState *bs);
+
 /* If non-zero, use only whitelisted block drivers */
 static int use_bdrv_whitelist;
 
@@ -7475,7 +7477,7 @@ static bool append_strong_runtime_options(QDict *d, BlockDriverState *bs)
 /* Note: This function may return false positives; it may return true
  * even if opening the backing file specified by bs's image header
  * would result in exactly bs->backing. */
-bool bdrv_backing_overridden(BlockDriverState *bs)
+static bool bdrv_backing_overridden(BlockDriverState *bs)
 {
     if (bs->backing) {
         return strcmp(bs->auto_backing_file,