remap_cache_file_ch
static struct cachekey_header *remap_cache_file_ch(struct cachekey_header *ch,
if ((ch = remap_cache_file_ch(ch, MAXRECS(ch))) == 0) {
if (((*ch) = remap_cache_file_ch(*ch, NUMRECS(*ch)+CHUNK_NUMREC)) == 0)