diff --git a/builtin/multi-pack-index.c b/builtin/multi-pack-index.c
index b1ea1a6aa1..e86b8cd17d 100644
--- a/builtin/multi-pack-index.c
+++ b/builtin/multi-pack-index.c
@@ -47,16 +47,16 @@ int cmd_multi_pack_index(int argc, const char **argv,
 	trace2_cmd_mode(argv[0]);
 
 	if (!strcmp(argv[0], "repack"))
-		return midx_repack(the_repository, opts.object_dir, (size_t)opts.batch_size);
+		return midx_repack(the_repository, opts.object_dir, (size_t)opts.batch_size, 0);
 	if (opts.batch_size)
 		die(_("--batch-size option is only for 'repack' subcommand"));
 
 	if (!strcmp(argv[0], "write"))
-		return write_midx_file(opts.object_dir);
+		return write_midx_file(opts.object_dir, 0);
 	if (!strcmp(argv[0], "verify"))
-		return verify_midx_file(the_repository, opts.object_dir);
+		return verify_midx_file(the_repository, opts.object_dir, 0);
 	if (!strcmp(argv[0], "expire"))
-		return expire_midx_packs(the_repository, opts.object_dir);
+		return expire_midx_packs(the_repository, opts.object_dir, 0);
 
 	die(_("unrecognized subcommand: %s"), argv[0]);
 }
diff --git a/builtin/repack.c b/builtin/repack.c
index 094c2f8ea4..397081d568 100644
--- a/builtin/repack.c
+++ b/builtin/repack.c
@@ -562,7 +562,7 @@ int cmd_repack(int argc, const char **argv, const char *prefix)
 	remove_temporary_files();
 
 	if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX, 0))
-		write_midx_file(get_object_directory());
+		write_midx_file(get_object_directory(), 0);
 
 	string_list_clear(&names, 0);
 	string_list_clear(&rollback, 0);
diff --git a/midx.c b/midx.c
index f29afc0d2d..f169a681dd 100644
--- a/midx.c
+++ b/midx.c
@@ -1016,7 +1016,7 @@ static int write_midx_internal(const char *object_dir, struct multi_pack_index *
 	return result;
 }
 
-int write_midx_file(const char *object_dir)
+int write_midx_file(const char *object_dir, unsigned flags)
 {
 	return write_midx_internal(object_dir, NULL, NULL);
 }
@@ -1076,7 +1076,7 @@ static int compare_pair_pos_vs_id(const void *_a, const void *_b)
 			display_progress(progress, _n); \
 	} while (0)
 
-int verify_midx_file(struct repository *r, const char *object_dir)
+int verify_midx_file(struct repository *r, const char *object_dir, unsigned flags)
 {
 	struct pair_pos_vs_id *pairs = NULL;
 	uint32_t i;
@@ -1183,7 +1183,7 @@ int verify_midx_file(struct repository *r, const char *object_dir)
 	return verify_midx_error;
 }
 
-int expire_midx_packs(struct repository *r, const char *object_dir)
+int expire_midx_packs(struct repository *r, const char *object_dir, unsigned flags)
 {
 	uint32_t i, *count, result = 0;
 	struct string_list packs_to_drop = STRING_LIST_INIT_DUP;
@@ -1315,7 +1315,7 @@ static int fill_included_packs_batch(struct repository *r,
 	return 0;
 }
 
-int midx_repack(struct repository *r, const char *object_dir, size_t batch_size)
+int midx_repack(struct repository *r, const char *object_dir, size_t batch_size, unsigned flags)
 {
 	int result = 0;
 	uint32_t i;
diff --git a/midx.h b/midx.h
index f0ae656b5d..e6fa356b5c 100644
--- a/midx.h
+++ b/midx.h
@@ -37,6 +37,8 @@ struct multi_pack_index {
 	char object_dir[FLEX_ARRAY];
 };
 
+#define MIDX_PROGRESS     (1 << 0)
+
 struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local);
 int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id);
 int bsearch_midx(const struct object_id *oid, struct multi_pack_index *m, uint32_t *result);
@@ -47,11 +49,11 @@ int fill_midx_entry(struct repository *r, const struct object_id *oid, struct pa
 int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name);
 int prepare_multi_pack_index_one(struct repository *r, const char *object_dir, int local);
 
-int write_midx_file(const char *object_dir);
+int write_midx_file(const char *object_dir, unsigned flags);
 void clear_midx_file(struct repository *r);
-int verify_midx_file(struct repository *r, const char *object_dir);
-int expire_midx_packs(struct repository *r, const char *object_dir);
-int midx_repack(struct repository *r, const char *object_dir, size_t batch_size);
+int verify_midx_file(struct repository *r, const char *object_dir, unsigned flags);
+int expire_midx_packs(struct repository *r, const char *object_dir, unsigned flags);
+int midx_repack(struct repository *r, const char *object_dir, size_t batch_size, unsigned flags);
 
 void close_midx(struct multi_pack_index *m);
 
