diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index a9cf11f2e8c7..033e411dd811 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1075,7 +1075,6 @@ struct btrfs_root {
 
 	u64 highest_objectid;
 
-	u64 defrag_trans_start;
 	struct btrfs_key defrag_progress;
 	struct btrfs_key defrag_max;
 
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index b5b7055b7953..dbf90cd49513 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1141,10 +1141,6 @@ static void __setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info,
 	memset(&root->root_key, 0, sizeof(root->root_key));
 	memset(&root->root_item, 0, sizeof(root->root_item));
 	memset(&root->defrag_progress, 0, sizeof(root->defrag_progress));
-	if (!dummy)
-		root->defrag_trans_start = fs_info->generation;
-	else
-		root->defrag_trans_start = 0;
 	root->root_key.objectid = objectid;
 	root->anon_dev = 0;
 
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 16c3a6d2586d..d3f28b8f4ff9 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -133,10 +133,9 @@ out:
 		ret = 0;
 	}
 done:
-	if (ret != -EAGAIN) {
+	if (ret != -EAGAIN)
 		memset(&root->defrag_progress, 0,
 		       sizeof(root->defrag_progress));
-		root->defrag_trans_start = trans->transid;
-	}
+
 	return ret;
 }