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 bch2_trans_unlock_long((_ctxt)->trans); \
49 __wait_event((_ctxt)->wait, \
50 bch2_moving_ctxt_next_pending_write(_ctxt) || \
51 (cond_finished = (_cond))); \
56 typedef bool (*move_pred_fn)(struct bch_fs *, void *, struct bkey_s_c,
57 struct bch_io_opts *, struct data_update_opts *);
59 void bch2_moving_ctxt_exit(struct moving_context *);
60 void bch2_moving_ctxt_init(struct moving_context *, struct bch_fs *,
61 struct bch_ratelimit *, struct bch_move_stats *,
62 struct write_point_specifier, bool);
63 struct moving_io *bch2_moving_ctxt_next_pending_write(struct moving_context *);
64 void bch2_moving_ctxt_do_pending_writes(struct moving_context *);
65 void bch2_move_ctxt_wait_for_io(struct moving_context *);
66 int bch2_move_ratelimit(struct moving_context *);
68 /* Inodes in different snapshots may have different IO options: */
69 struct snapshot_io_opts_entry {
71 struct bch_io_opts io_opts;
74 struct per_snapshot_io_opts {
76 struct bch_io_opts fs_io_opts;
77 DARRAY(struct snapshot_io_opts_entry) d;
80 static inline void per_snapshot_io_opts_init(struct per_snapshot_io_opts *io_opts, struct bch_fs *c)
82 memset(io_opts, 0, sizeof(*io_opts));
83 io_opts->fs_io_opts = bch2_opts_to_inode_opts(c->opts);
86 static inline void per_snapshot_io_opts_exit(struct per_snapshot_io_opts *io_opts)
88 darray_exit(&io_opts->d);
91 struct bch_io_opts *bch2_move_get_io_opts(struct btree_trans *,
92 struct per_snapshot_io_opts *, struct bkey_s_c);
93 int bch2_move_get_io_opts_one(struct btree_trans *, struct bch_io_opts *, struct bkey_s_c);
95 int bch2_scan_old_btree_nodes(struct bch_fs *, struct bch_move_stats *);
97 int bch2_move_extent(struct moving_context *,
98 struct move_bucket_in_flight *,
102 struct data_update_opts);
104 int __bch2_move_data(struct moving_context *,
107 move_pred_fn, void *);
108 int bch2_move_data(struct bch_fs *,
111 struct bch_ratelimit *,
112 struct bch_move_stats *,
113 struct write_point_specifier,
115 move_pred_fn, void *);
117 int __bch2_evacuate_bucket(struct moving_context *,
118 struct move_bucket_in_flight *,
120 struct data_update_opts);
121 int bch2_evacuate_bucket(struct bch_fs *, struct bpos, int,
122 struct data_update_opts,
123 struct bch_ratelimit *,
124 struct bch_move_stats *,
125 struct write_point_specifier,
127 int bch2_data_job(struct bch_fs *,
128 struct bch_move_stats *,
129 struct bch_ioctl_data);
131 void bch2_move_stats_to_text(struct printbuf *, struct bch_move_stats *);
132 void bch2_move_stats_exit(struct bch_move_stats *, struct bch_fs *);
133 void bch2_move_stats_init(struct bch_move_stats *, char *);
135 void bch2_fs_moving_ctxts_to_text(struct printbuf *, struct bch_fs *);
137 void bch2_fs_move_init(struct bch_fs *);
139 #endif /* _BCACHEFS_MOVE_H */