1 files changed, 22 insertions, 0 deletions
diff --git a/split-index.c b/split-index.c
index 615f4cac05..f519e60f87 100644
--- a/split-index.c
+++ b/split-index.c
@@ -317,3 +317,25 @@ void replace_index_entry_in_base(struct index_state *istate,
 		istate->split_index->base->cache[new->index - 1] = new;
 	}
 }
+
+void add_split_index(struct index_state *istate)
+{
+	if (!istate->split_index) {
+		init_split_index(istate);
+		istate->cache_changed |= SPLIT_INDEX_ORDERED;
+	}
+}
+
+void remove_split_index(struct index_state *istate)
+{
+	if (istate->split_index) {
+		/*
+		 * can't discard_split_index(&the_index); because that
+		 * will destroy split_index->base->cache[], which may
+		 * be shared with the_index.cache[]. So yeah we're
+		 * leaking a bit here.
+		 */
+		istate->split_index = NULL;
+		istate->cache_changed |= SOMETHING_CHANGED;
+	}
+}