Re: [GSOC Patch v2 2/4] commit: move members graph_pos, generation to a slab

diff --git a/commit-graph.c b/commit-graph.c
index 7d887a6a2c..f7cca4def4 100644
--- a/commit-graph.c
+++ b/commit-graph.c

@@ -1302,8 +1302,8 @@ static void compute_generation_numbers(struct write_commit_graph_context *ctx)
 					ctx->commits.nr);
 	for (i = 0; i < ctx->commits.nr; i++) {
 		display_progress(ctx->progress, i + 1);
-		if (ctx->commits.list[i]->generation != GENERATION_NUMBER_INFINITY &&
-		    ctx->commits.list[i]->generation != GENERATION_NUMBER_ZERO)
+		if (commit_graph_generation(ctx->commits.list[i]) != GENERATION_NUMBER_INFINITY &&
+		    commit_graph_generation(ctx->commits.list[i]) != GENERATION_NUMBER_ZERO)
 			continue;
 
 		commit_list_insert(ctx->commits.list[i], &list);

@@ -1314,22 +1314,22 @@ static void compute_generation_numbers(struct write_commit_graph_context *ctx)
 			uint32_t max_generation = 0;
 
 			for (parent = current->parents; parent; parent = parent->next) {
-				if (parent->item->generation == GENERATION_NUMBER_INFINITY ||
-				    parent->item->generation == GENERATION_NUMBER_ZERO) {
+				if (commit_graph_generation(parent->item) == GENERATION_NUMBER_INFINITY ||
+				    commit_graph_generation(parent->item) == GENERATION_NUMBER_ZERO) {
 					all_parents_computed = 0;
 					commit_list_insert(parent->item, &list);
 					break;
-				} else if (parent->item->generation > max_generation) {
-					max_generation = parent->item->generation;
+				} else if (commit_graph_generation(parent->item) > max_generation) {
+					max_generation = commit_graph_generation(parent->item);
 				}
 			}
 
 			if (all_parents_computed) {
-				current->generation = max_generation + 1;
+				commit_graph_data_at(current)->generation = max_generation + 1;
 				pop_commit(&list);
 
-				if (current->generation > GENERATION_NUMBER_MAX)
-					current->generation = GENERATION_NUMBER_MAX;
+				if (commit_graph_generation(current) > GENERATION_NUMBER_MAX)
+					commit_graph_data_at(current)->generation = GENERATION_NUMBER_MAX;
 			}
 		}
 	}