[06/13] pack-bitmap.c: support bitmap pack-reuse with incremental MIDXs

Commit Message

Taylor Blau Aug. 15, 2024, 9:01 p.m. UTC

Signed-off-by: Taylor Blau <[e-mail]>
---
 pack-bitmap.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

Patch

diff --git a/pack-bitmap.c b/pack-bitmap.c
index f91ab1b572..2b3c53d882 100644
--- a/pack-bitmap.c
+++ b/pack-bitmap.c
@@ -2320,7 +2320,8 @@  void reuse_partial_packfile_from_bitmap(struct bitmap_index *bitmap_git,
 		multi_pack_reuse = 0;
 
 	if (multi_pack_reuse) {
-		for (i = 0; i < bitmap_git->midx->num_packs; i++) {
+		struct multi_pack_index *m = bitmap_git->midx;
+		for (i = 0; i < m->num_packs + m->num_packs_in_base; i++) {
 			struct bitmapped_pack pack;
 			if (nth_bitmapped_pack(r, bitmap_git->midx, &pack, i) < 0) {
 				warning(_("unable to load pack: '%s', disabling pack-reuse"),
@@ -2344,14 +2345,18 @@  void reuse_partial_packfile_from_bitmap(struct bitmap_index *bitmap_git,
 		uint32_t pack_int_id;
 
 		if (bitmap_is_midx(bitmap_git)) {
+			struct multi_pack_index *m = bitmap_git->midx;
 			uint32_t preferred_pack_pos;
 
-			if (midx_preferred_pack(bitmap_git->midx, &preferred_pack_pos) < 0) {
+			while (m->base_midx)
+				m = m->base_midx;
+
+			if (midx_preferred_pack(m, &preferred_pack_pos) < 0) {
 				warning(_("unable to compute preferred pack, disabling pack-reuse"));
 				return;
 			}
 
-			pack = bitmap_git->midx->packs[preferred_pack_pos];
+			pack = nth_midxed_pack(m, preferred_pack_pos);
 			pack_int_id = preferred_pack_pos;
 		} else {
 			pack = bitmap_git->pack;