move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / c_src / libbcachefs / journal_reclaim.h

diff --git a/c_src/libbcachefs/journal_reclaim.h b/c_src/libbcachefs/journal_reclaim.h
new file mode 100644 (file)
index 0000000..ec84c33
--- /dev/null
+++ b/c_src/libbcachefs/journal_reclaim.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_JOURNAL_RECLAIM_H
+#define _BCACHEFS_JOURNAL_RECLAIM_H
+
+#define JOURNAL_PIN    (32 * 1024)
+
+static inline void journal_reclaim_kick(struct journal *j)
+{
+       struct task_struct *p = READ_ONCE(j->reclaim_thread);
+
+       j->reclaim_kicked = true;
+       if (p)
+               wake_up_process(p);
+}
+
+unsigned bch2_journal_dev_buckets_available(struct journal *,
+                                           struct journal_device *,
+                                           enum journal_space_from);
+void bch2_journal_set_watermark(struct journal *);
+void bch2_journal_space_available(struct journal *);
+
+static inline bool journal_pin_active(struct journal_entry_pin *pin)
+{
+       return pin->seq != 0;
+}
+
+static inline struct journal_entry_pin_list *
+journal_seq_pin(struct journal *j, u64 seq)
+{
+       EBUG_ON(seq < j->pin.front || seq >= j->pin.back);
+
+       return &j->pin.data[seq & j->pin.mask];
+}
+
+void bch2_journal_reclaim_fast(struct journal *);
+bool __bch2_journal_pin_put(struct journal *, u64);
+void bch2_journal_pin_put(struct journal *, u64);
+void bch2_journal_pin_drop(struct journal *, struct journal_entry_pin *);
+
+void bch2_journal_pin_set(struct journal *, u64, struct journal_entry_pin *,
+                         journal_pin_flush_fn);
+
+static inline void bch2_journal_pin_add(struct journal *j, u64 seq,
+                                       struct journal_entry_pin *pin,
+                                       journal_pin_flush_fn flush_fn)
+{
+       if (unlikely(!journal_pin_active(pin) || pin->seq > seq))
+               bch2_journal_pin_set(j, seq, pin, flush_fn);
+}
+
+void bch2_journal_pin_copy(struct journal *,
+                          struct journal_entry_pin *,
+                          struct journal_entry_pin *,
+                          journal_pin_flush_fn);
+
+static inline void bch2_journal_pin_update(struct journal *j, u64 seq,
+                                          struct journal_entry_pin *pin,
+                                          journal_pin_flush_fn flush_fn)
+{
+       if (unlikely(!journal_pin_active(pin) || pin->seq < seq))
+               bch2_journal_pin_set(j, seq, pin, flush_fn);
+}
+
+void bch2_journal_pin_flush(struct journal *, struct journal_entry_pin *);
+
+void bch2_journal_do_discards(struct journal *);
+int bch2_journal_reclaim(struct journal *);
+
+void bch2_journal_reclaim_stop(struct journal *);
+int bch2_journal_reclaim_start(struct journal *);
+
+bool bch2_journal_flush_pins(struct journal *, u64);
+
+static inline bool bch2_journal_flush_all_pins(struct journal *j)
+{
+       return bch2_journal_flush_pins(j, U64_MAX);
+}
+
+int bch2_journal_flush_device_pins(struct journal *, int);
+
+#endif /* _BCACHEFS_JOURNAL_RECLAIM_H */