BKW_MMAP_DATA_PENDING
if (overwrite && evlist->bkw_mmap_state != BKW_MMAP_DATA_PENDING)
evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_DATA_PENDING);
evlist__toggle_bkw_mmap(evlist, BKW_MMAP_DATA_PENDING);
if (state != BKW_MMAP_DATA_PENDING)
case BKW_MMAP_DATA_PENDING: {