+ if (!__bch2_bucket_nocow_trylock(l, dev_bucket, flags)) {
+ struct bch_fs *c = container_of(t, struct bch_fs, nocow_locks);
+ u64 start_time = local_clock();
+
+ __closure_wait_event(&l->wait, __bch2_bucket_nocow_trylock(l, dev_bucket, flags));
+ bch2_time_stats_update(&c->times[BCH_TIME_nocow_lock_contended], start_time);
+ }
+}
+
+void bch2_nocow_locks_to_text(struct printbuf *out, struct bucket_nocow_lock_table *t)
+
+{
+ unsigned i, nr_zero = 0;
+ struct nocow_lock_bucket *l;
+
+ for (l = t->l; l < t->l + ARRAY_SIZE(t->l); l++) {
+ unsigned v = 0;
+
+ for (i = 0; i < ARRAY_SIZE(l->l); i++)
+ v |= atomic_read(&l->l[i]);
+
+ if (!v) {
+ nr_zero++;
+ continue;
+ }
+
+ if (nr_zero)
+ prt_printf(out, "(%u empty entries)\n", nr_zero);
+ nr_zero = 0;
+
+ for (i = 0; i < ARRAY_SIZE(l->l); i++) {
+ int v = atomic_read(&l->l[i]);
+ if (v) {
+ bch2_bpos_to_text(out, u64_to_bucket(l->b[i]));
+ prt_printf(out, ": %s %u ", v < 0 ? "copy" : "update", abs(v));
+ }
+ }
+ prt_newline(out);
+ }
+
+ if (nr_zero)
+ prt_printf(out, "(%u empty entries)\n", nr_zero);
+}
+
+void bch2_fs_nocow_locking_exit(struct bch_fs *c)
+{
+ struct bucket_nocow_lock_table *t = &c->nocow_locks;
+
+ for (struct nocow_lock_bucket *l = t->l; l < t->l + ARRAY_SIZE(t->l); l++)
+ for (unsigned j = 0; j < ARRAY_SIZE(l->l); j++)
+ BUG_ON(atomic_read(&l->l[j]));
+}
+
+int bch2_fs_nocow_locking_init(struct bch_fs *c)
+{
+ struct bucket_nocow_lock_table *t = &c->nocow_locks;
+
+ for (struct nocow_lock_bucket *l = t->l; l < t->l + ARRAY_SIZE(t->l); l++)
+ spin_lock_init(&l->lock);