bch_update_bucket_in_use
bch_update_bucket_in_use(ca->set, &ca->set->gc_stats);
bch_update_bucket_in_use(ca->set, &ca->set->gc_stats);
bch_update_bucket_in_use(c, &stats);
void bch_update_bucket_in_use(struct cache_set *c, struct gc_stat *stats);