diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 5d158d3..863c34d 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -690,6 +690,7 @@
 		return -ENOMEM;
 
 	sector_sum = sums->sums;
+	trans->adding_csums = 1;
 again:
 	next_offset = (u64)-1;
 	found_next = 0;
@@ -853,6 +854,7 @@
 		goto again;
 	}
 out:
+	trans->adding_csums = 0;
 	btrfs_free_path(path);
 	return ret;