1 file changed, 11 insertions, 1 deletion
diff --git a/source/parsing.c b/source/parsing.c
index f684241..909a288 100644
--- a/source/parsing.c
+++ b/source/parsing.c
@@ -24,11 +24,21 @@ static int mailmap_read;
 
 struct string_list *cgit_mailmap(void)
 {
+	struct object_id oid;
+	size_t size;
+
 	if (!ctx.repo || !ctx.repo->enable_mailmap)
 		return NULL;
 	if (!mailmap_read) {
 		mailmap_read = 1;
-		read_mailmap_blob(the_repository, &mailmap, "HEAD:.mailmap");
+		// git reads the blob whole, so it is held to the same bound as
+		// every other blob a page inflates.
+		if (
+			!repo_get_oid(the_repository, "HEAD:.mailmap", &oid)                   &&
+			odb_read_object_info(the_repository->objects, &oid, &size) == OBJ_BLOB &&
+			!cgit_blob_too_large(size)
+		)
+			read_mailmap_blob(the_repository, &mailmap, "HEAD:.mailmap");
 	}
 	return mailmap.nr ? &mailmap : NULL;
 }