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-rw-r--r--commit-graph.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/commit-graph.c b/commit-graph.c
index 6f7961d071..f2163e109f 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -1213,7 +1213,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
uint64_t chunk_offsets[5];
const unsigned hashsz = the_hash_algo->rawsz;
struct strbuf progress_title = STRBUF_INIT;
- int num_chunks = ctx->num_extra_edges ? 4 : 3;
+ int num_chunks = 3;
ctx->graph_name = get_commit_graph_filename(ctx->obj_dir);
if (safe_create_leading_directories(ctx->graph_name)) {
@@ -1226,27 +1226,34 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
hold_lock_file_for_update(&lk, ctx->graph_name, LOCK_DIE_ON_ERROR);
f = hashfd(lk.tempfile->fd, lk.tempfile->filename.buf);
- hashwrite_be32(f, GRAPH_SIGNATURE);
-
- hashwrite_u8(f, GRAPH_VERSION);
- hashwrite_u8(f, oid_version());
- hashwrite_u8(f, num_chunks);
- hashwrite_u8(f, 0); /* unused padding byte */
-
chunk_ids[0] = GRAPH_CHUNKID_OIDFANOUT;
chunk_ids[1] = GRAPH_CHUNKID_OIDLOOKUP;
chunk_ids[2] = GRAPH_CHUNKID_DATA;
- if (ctx->num_extra_edges)
- chunk_ids[3] = GRAPH_CHUNKID_EXTRAEDGES;
- else
- chunk_ids[3] = 0;
- chunk_ids[4] = 0;
+ if (ctx->num_extra_edges) {
+ chunk_ids[num_chunks] = GRAPH_CHUNKID_EXTRAEDGES;
+ num_chunks++;
+ }
+
+ chunk_ids[num_chunks] = 0;
chunk_offsets[0] = 8 + (num_chunks + 1) * GRAPH_CHUNKLOOKUP_WIDTH;
chunk_offsets[1] = chunk_offsets[0] + GRAPH_FANOUT_SIZE;
chunk_offsets[2] = chunk_offsets[1] + hashsz * ctx->commits.nr;
chunk_offsets[3] = chunk_offsets[2] + (hashsz + 16) * ctx->commits.nr;
- chunk_offsets[4] = chunk_offsets[3] + 4 * ctx->num_extra_edges;
+
+ num_chunks = 3;
+ if (ctx->num_extra_edges) {
+ chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] +
+ 4 * ctx->num_extra_edges;
+ num_chunks++;
+ }
+
+ hashwrite_be32(f, GRAPH_SIGNATURE);
+
+ hashwrite_u8(f, GRAPH_VERSION);
+ hashwrite_u8(f, oid_version());
+ hashwrite_u8(f, num_chunks);
+ hashwrite_u8(f, 0);
for (i = 0; i <= num_chunks; i++) {
uint32_t chunk_write[3];