1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_MOVE_H
3 #define _BCACHEFS_MOVE_H
6 #include "bcachefs_ioctl.h"
7 #include "btree_iter.h"
9 #include "data_update.h"
10 #include "move_types.h"
14 struct moving_context {
15 struct btree_trans *trans;
16 struct list_head list;
19 struct bch_ratelimit *rate;
20 struct bch_move_stats *stats;
21 struct write_point_specifier wp;
25 /* For waiting on outstanding reads and writes: */
29 struct list_head reads;
32 /* in flight sectors: */
33 atomic_t read_sectors;
34 atomic_t write_sectors;
38 wait_queue_head_t wait;
41 #define move_ctxt_wait_event(_ctxt, _cond) \
43 bool cond_finished = false; \
44 bch2_moving_ctxt_do_pending_writes(_ctxt); \
48 __wait_event((_ctxt)->wait, \
49 bch2_moving_ctxt_next_pending_write(_ctxt) || \
50 (cond_finished = (_cond))); \
55 typedef bool (*move_pred_fn)(struct bch_fs *, void *, struct bkey_s_c,
56 struct bch_io_opts *, struct data_update_opts *);
58 void bch2_moving_ctxt_exit(struct moving_context *);
59 void bch2_moving_ctxt_init(struct moving_context *, struct bch_fs *,
60 struct bch_ratelimit *, struct bch_move_stats *,
61 struct write_point_specifier, bool);
62 struct moving_io *bch2_moving_ctxt_next_pending_write(struct moving_context *);
63 void bch2_moving_ctxt_do_pending_writes(struct moving_context *);
64 void bch2_move_ctxt_wait_for_io(struct moving_context *);
65 int bch2_move_ratelimit(struct moving_context *);
67 /* Inodes in different snapshots may have different IO options: */
68 struct snapshot_io_opts_entry {
70 struct bch_io_opts io_opts;
73 struct per_snapshot_io_opts {
75 struct bch_io_opts fs_io_opts;
76 DARRAY(struct snapshot_io_opts_entry) d;
79 static inline void per_snapshot_io_opts_init(struct per_snapshot_io_opts *io_opts, struct bch_fs *c)
81 memset(io_opts, 0, sizeof(*io_opts));
82 io_opts->fs_io_opts = bch2_opts_to_inode_opts(c->opts);
85 static inline void per_snapshot_io_opts_exit(struct per_snapshot_io_opts *io_opts)
87 darray_exit(&io_opts->d);
90 struct bch_io_opts *bch2_move_get_io_opts(struct btree_trans *,
91 struct per_snapshot_io_opts *, struct bkey_s_c);
92 int bch2_move_get_io_opts_one(struct btree_trans *, struct bch_io_opts *, struct bkey_s_c);
94 int bch2_scan_old_btree_nodes(struct bch_fs *, struct bch_move_stats *);
96 int bch2_move_extent(struct moving_context *,
97 struct move_bucket_in_flight *,
101 struct data_update_opts);
103 int __bch2_move_data(struct moving_context *,
106 move_pred_fn, void *);
107 int bch2_move_data(struct bch_fs *,
110 struct bch_ratelimit *,
111 struct bch_move_stats *,
112 struct write_point_specifier,
114 move_pred_fn, void *);
116 int __bch2_evacuate_bucket(struct moving_context *,
117 struct move_bucket_in_flight *,
119 struct data_update_opts);
120 int bch2_evacuate_bucket(struct bch_fs *, struct bpos, int,
121 struct data_update_opts,
122 struct bch_ratelimit *,
123 struct bch_move_stats *,
124 struct write_point_specifier,
126 int bch2_data_job(struct bch_fs *,
127 struct bch_move_stats *,
128 struct bch_ioctl_data);
130 void bch2_move_stats_to_text(struct printbuf *, struct bch_move_stats *);
131 void bch2_move_stats_exit(struct bch_move_stats *, struct bch_fs *);
132 void bch2_move_stats_init(struct bch_move_stats *, char *);
134 void bch2_fs_moving_ctxts_to_text(struct printbuf *, struct bch_fs *);
136 void bch2_fs_move_init(struct bch_fs *);
138 #endif /* _BCACHEFS_MOVE_H */