- union journal_preres_state old, new;
- u64 v = atomic64_read(&j->prereserved.counter);
-
- do {
- old.v = new.v = v;
- new.remaining = u64s_remaining;
- } while ((v = atomic64_cmpxchg(&j->prereserved.counter,
- old.v, new.v)) != old.v);
+ struct bch_fs *c = container_of(j, struct bch_fs, journal);
+ bool low_on_space = j->space[journal_space_clean].total * 4 <=
+ j->space[journal_space_total].total;
+ bool low_on_pin = fifo_free(&j->pin) < j->pin.size / 4;
+ bool low_on_wb = bch2_btree_write_buffer_must_wait(c);
+ unsigned watermark = low_on_space || low_on_pin || low_on_wb
+ ? BCH_WATERMARK_reclaim
+ : BCH_WATERMARK_stripe;
+
+ if (track_event_change(&c->times[BCH_TIME_blocked_journal_low_on_space],
+ &j->low_on_space_start, low_on_space) ||
+ track_event_change(&c->times[BCH_TIME_blocked_journal_low_on_pin],
+ &j->low_on_pin_start, low_on_pin) ||
+ track_event_change(&c->times[BCH_TIME_blocked_write_buffer_full],
+ &j->write_buffer_full_start, low_on_wb))
+ trace_and_count(c, journal_full, c);
+
+ swap(watermark, j->watermark);
+ if (watermark > j->watermark)
+ journal_wake(j);