commit: don't rewrite shared index unnecessarily

diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 48fa4724aa01b67fd53682e8db51c8013c5bc5fe..f07bc66ed6679cac715491f0b212aca0b8bcd625 100644 (file)
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -1227,7 +1227,7 @@ static void resolve_deltas(void)
  * - append objects to convert thin pack to full pack if required
  * - write the final 20-byte SHA-1
  */
-static void fix_unresolved_deltas(struct sha1file *f, int nr_unresolved);
+static void fix_unresolved_deltas(struct sha1file *f);
 static void conclude_pack(int fix_thin_pack, const char *curr_pack, unsigned char *pack_sha1)
 {
        if (nr_ref_deltas + nr_ofs_deltas == nr_resolved_deltas) {
@@ -1249,7 +1249,7 @@ static void conclude_pack(int fix_thin_pack, const char *curr_pack, unsigned cha
                memset(objects + nr_objects + 1, 0,
                       nr_unresolved * sizeof(*objects));
                f = sha1fd(output_fd, curr_pack);
-               fix_unresolved_deltas(f, nr_unresolved);
+               fix_unresolved_deltas(f);
                strbuf_addf(&msg, _("completed with %d local objects"),
                            nr_objects - nr_objects_initial);
                stop_progress_msg(&progress, msg.buf);
@@ -1331,10 +1331,10 @@ static int delta_pos_compare(const void *_a, const void *_b)
        return a->obj_no - b->obj_no;
 }
 
-static void fix_unresolved_deltas(struct sha1file *f, int nr_unresolved)
+static void fix_unresolved_deltas(struct sha1file *f)
 {
        struct ref_delta_entry **sorted_by_pos;
-       int i, n = 0;
+       int i;
 
        /*
         * Since many unresolved deltas may well be themselves base objects
@@ -1346,12 +1346,12 @@ static void fix_unresolved_deltas(struct sha1file *f, int nr_unresolved)
         * before deltas depending on them, a good heuristic is to start
         * resolving deltas in the same order as their position in the pack.
         */
-       sorted_by_pos = xmalloc(nr_unresolved * sizeof(*sorted_by_pos));
+       sorted_by_pos = xmalloc(nr_ref_deltas * sizeof(*sorted_by_pos));
        for (i = 0; i < nr_ref_deltas; i++)
-               sorted_by_pos[n++] = &ref_deltas[i];
-       qsort(sorted_by_pos, n, sizeof(*sorted_by_pos), delta_pos_compare);
+               sorted_by_pos[i] = &ref_deltas[i];
+       qsort(sorted_by_pos, nr_ref_deltas, sizeof(*sorted_by_pos), delta_pos_compare);
 
-       for (i = 0; i < n; i++) {
+       for (i = 0; i < nr_ref_deltas; i++) {
                struct ref_delta_entry *d = sorted_by_pos[i];
                enum object_type type;
                struct base_data *base_obj = alloc_base_data();