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-rw-r--r--block/block-backend.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block/block-backend.c b/block/block-backend.c
index aa4adf06ae..ae42474891 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2551,10 +2551,10 @@ void blk_register_buf(BlockBackend *blk, void *host, size_t size)
     bdrv_register_buf(blk_bs(blk), host, size);
 }
 
-void blk_unregister_buf(BlockBackend *blk, void *host)
+void blk_unregister_buf(BlockBackend *blk, void *host, size_t size)
 {
     GLOBAL_STATE_CODE();
-    bdrv_unregister_buf(blk_bs(blk), host);
+    bdrv_unregister_buf(blk_bs(blk), host, size);
 }
 
 int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in,