diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 43792d5a792c..42914c9785e5 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1810,10 +1810,11 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 	free_extent_buffer(ctx.scratch_eb);
 	ASSERT(list_empty(&ctx.list));
 	ASSERT(list_empty(&ctx.conflict_inodes));
+	ASSERT(ret <= 0, "ret=%d", ret);
 	err = file_check_and_advance_wb_err(file);
 	if (!ret)
 		ret = err;
-	return ret > 0 ? -EIO : ret;
+	return ret;
 
 out_release_extents:
 	btrfs_release_log_ctx_extents(&ctx);