+ percpu_up_read(&c->mark_lock);
+
+#define eval_state(_a, expr) ({ const struct bch_alloc_v4 *a = _a; expr; })
+#define statechange(expr) !eval_state(old_a, expr) && eval_state(new_a, expr)
+#define bucket_flushed(a) (!a->journal_seq || a->journal_seq <= c->journal.flushed_seq_ondisk)