X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libbcachefs%2Fjournal_reclaim.h;h=0fd1af120db551746fc5cac54000c8616914a4f3;hb=6e897639569207885257ac744019b7e5c340fb74;hp=1d688d6fa2cce091603c882d1684a027c0c6d596;hpb=70bb5ab7a863ccff57ceb2a195d7cfa0fdf39218;p=bcachefs-tools-debian

diff --git a/libbcachefs/journal_reclaim.h b/libbcachefs/journal_reclaim.h
index 1d688d6..0fd1af1 100644
--- a/libbcachefs/journal_reclaim.h
+++ b/libbcachefs/journal_reclaim.h
@@ -1,10 +1,21 @@
+/* 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 *);
+					    struct journal_device *,
+					    enum journal_space_from);
 void bch2_journal_space_available(struct journal *);
 
 static inline bool journal_pin_active(struct journal_entry_pin *pin)
@@ -20,26 +31,54 @@ journal_seq_pin(struct journal *j, u64 seq)
 	return &j->pin.data[seq & j->pin.mask];
 }
 
+void __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_add(struct journal *, u64, struct journal_entry_pin *,
+void bch2_journal_pin_set(struct journal *, u64, struct journal_entry_pin *,
 			  journal_pin_flush_fn);
-void bch2_journal_pin_update(struct journal *, u64, struct journal_entry_pin *,
-			     journal_pin_flush_fn);
-void bch2_journal_pin_drop(struct journal *, struct journal_entry_pin *);
-void bch2_journal_pin_add_if_older(struct journal *,
-				  struct journal_entry_pin *,
-				  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);
+}
+
+static inline void bch2_journal_pin_copy(struct journal *j,
+					 struct journal_entry_pin *dst,
+					 struct journal_entry_pin *src,
+					 journal_pin_flush_fn flush_fn)
+{
+	/* Guard against racing with journal_pin_drop(src): */
+	u64 seq = READ_ONCE(src->seq);
+
+	if (seq)
+		bch2_journal_pin_add(j, seq, dst, 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_reclaim_work(struct work_struct *);
+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 *);
 
-void bch2_journal_flush_pins(struct journal *, u64);
+bool bch2_journal_flush_pins(struct journal *, u64);
 
-static inline void bch2_journal_flush_all_pins(struct journal *j)
+static inline bool bch2_journal_flush_all_pins(struct journal *j)
 {
-	bch2_journal_flush_pins(j, U64_MAX);
+	return bch2_journal_flush_pins(j, U64_MAX);
 }
 
 int bch2_journal_flush_device_pins(struct journal *, int);