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-rw-r--r--block/commit.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/commit.c b/block/commit.c
index ba60fb7955..b0a8a793cd 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -240,6 +240,8 @@ static BlockDriver bdrv_commit_top = {
     .bdrv_co_block_status       = bdrv_co_block_status_from_backing,
     .bdrv_refresh_filename      = bdrv_commit_top_refresh_filename,
     .bdrv_child_perm            = bdrv_commit_top_child_perm,
+
+    .is_filter                  = true,
 };
 
 void commit_start(const char *job_id, BlockDriverState *bs,