1 files changed, 96 insertions, 0 deletions
diff --git a/fs/bcachefs/move.h b/fs/bcachefs/move.h
new file mode 100644
index 000000000000..cbdd58db8782
--- /dev/null
+++ b/fs/bcachefs/move.h
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_MOVE_H
+#define _BCACHEFS_MOVE_H
+
+#include "bcachefs_ioctl.h"
+#include "btree_iter.h"
+#include "buckets.h"
+#include "data_update.h"
+#include "move_types.h"
+
+struct bch_read_bio;
+
+struct moving_context {
+	struct bch_fs		*c;
+	struct list_head	list;
+	void			*fn;
+
+	struct bch_ratelimit	*rate;
+	struct bch_move_stats	*stats;
+	struct write_point_specifier wp;
+	bool			wait_on_copygc;
+	bool			write_error;
+
+	/* For waiting on outstanding reads and writes: */
+	struct closure		cl;
+
+	struct mutex		lock;
+	struct list_head	reads;
+	struct list_head	ios;
+
+	/* in flight sectors: */
+	atomic_t		read_sectors;
+	atomic_t		write_sectors;
+	atomic_t		read_ios;
+	atomic_t		write_ios;
+
+	wait_queue_head_t	wait;
+};
+
+#define move_ctxt_wait_event(_ctxt, _trans, _cond)			\
+do {									\
+	bool cond_finished = false;					\
+	bch2_moving_ctxt_do_pending_writes(_ctxt, _trans);		\
+									\
+	if (_cond)							\
+		break;							\
+	__wait_event((_ctxt)->wait,					\
+		     bch2_moving_ctxt_next_pending_write(_ctxt) ||	\
+		     (cond_finished = (_cond)));			\
+	if (cond_finished)						\
+		break;							\
+} while (1)
+
+typedef bool (*move_pred_fn)(struct bch_fs *, void *, struct bkey_s_c,
+			     struct bch_io_opts *, struct data_update_opts *);
+
+void bch2_moving_ctxt_exit(struct moving_context *);
+void bch2_moving_ctxt_init(struct moving_context *, struct bch_fs *,
+			   struct bch_ratelimit *, struct bch_move_stats *,
+			   struct write_point_specifier, bool);
+struct moving_io *bch2_moving_ctxt_next_pending_write(struct moving_context *);
+void bch2_moving_ctxt_do_pending_writes(struct moving_context *,
+					struct btree_trans *);
+
+int bch2_scan_old_btree_nodes(struct bch_fs *, struct bch_move_stats *);
+
+int bch2_move_data(struct bch_fs *,
+		   enum btree_id, struct bpos,
+		   enum btree_id, struct bpos,
+		   struct bch_ratelimit *,
+		   struct bch_move_stats *,
+		   struct write_point_specifier,
+		   bool,
+		   move_pred_fn, void *);
+
+int __bch2_evacuate_bucket(struct btree_trans *,
+			   struct moving_context *,
+			   struct move_bucket_in_flight *,
+			   struct bpos, int,
+			   struct data_update_opts);
+int bch2_evacuate_bucket(struct bch_fs *, struct bpos, int,
+			 struct data_update_opts,
+			 struct bch_ratelimit *,
+			 struct bch_move_stats *,
+			 struct write_point_specifier,
+			 bool);
+int bch2_data_job(struct bch_fs *,
+		  struct bch_move_stats *,
+		  struct bch_ioctl_data);
+
+void bch2_move_stats_init(struct bch_move_stats *stats, char *name);
+void bch2_fs_moving_ctxts_to_text(struct printbuf *, struct bch_fs *);
+
+void bch2_fs_move_init(struct bch_fs *);
+
+#endif /* _BCACHEFS_MOVE_H */