diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 3a65c10dce3358b57f7b4b50b37ac1951e452d89..87dba8517935d2516ee0745b4215a1bd16a32e5c 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2462,7 +2462,8 @@ int extent_write_cache_pages(struct extent_io_tree *tree,
 			}
 
 			if (wbc->sync_mode != WB_SYNC_NONE) {
-				flush_fn(data);
+				if (PageWriteback(page))
+					flush_fn(data);
 				wait_on_page_writeback(page);
 			}