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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_MOVE_H
#define _BCACHEFS_MOVE_H
#include "bbpos.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 btree_trans *trans;
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_timeout(_ctxt, _cond, _timeout) \
({ \
int _ret = 0; \
while (true) { \
bool cond_finished = false; \
bch2_moving_ctxt_do_pending_writes(_ctxt); \
\
if (_cond) \
break; \
bch2_trans_unlock_long((_ctxt)->trans); \
_ret = __wait_event_timeout((_ctxt)->wait, \
bch2_moving_ctxt_next_pending_write(_ctxt) || \
(cond_finished = (_cond)), _timeout); \
if (_ret || ( cond_finished)) \
break; \
} \
_ret; \
})
#define move_ctxt_wait_event(_ctxt, _cond) \
do { \
bool cond_finished = false; \
bch2_moving_ctxt_do_pending_writes(_ctxt); \
\
if (_cond) \
break; \
bch2_trans_unlock_long((_ctxt)->trans); \
__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 *);
void bch2_move_ctxt_wait_for_io(struct moving_context *);
int bch2_move_ratelimit(struct moving_context *);
/* Inodes in different snapshots may have different IO options: */
struct snapshot_io_opts_entry {
u32 snapshot;
struct bch_io_opts io_opts;
};
struct per_snapshot_io_opts {
u64 cur_inum;
struct bch_io_opts fs_io_opts;
DARRAY(struct snapshot_io_opts_entry) d;
};
static inline void per_snapshot_io_opts_init(struct per_snapshot_io_opts *io_opts, struct bch_fs *c)
{
memset(io_opts, 0, sizeof(*io_opts));
io_opts->fs_io_opts = bch2_opts_to_inode_opts(c->opts);
}
static inline void per_snapshot_io_opts_exit(struct per_snapshot_io_opts *io_opts)
{
darray_exit(&io_opts->d);
}
struct bch_io_opts *bch2_move_get_io_opts(struct btree_trans *,
struct per_snapshot_io_opts *, struct bkey_s_c);
int bch2_move_get_io_opts_one(struct btree_trans *, struct bch_io_opts *, struct bkey_s_c);
int bch2_scan_old_btree_nodes(struct bch_fs *, struct bch_move_stats *);
int bch2_move_extent(struct moving_context *,
struct move_bucket_in_flight *,
struct btree_iter *,
struct bkey_s_c,
struct bch_io_opts,
struct data_update_opts);
int __bch2_move_data(struct moving_context *,
struct bbpos,
struct bbpos,
move_pred_fn, void *);
int bch2_move_data(struct bch_fs *,
struct bbpos start,
struct bbpos end,
struct bch_ratelimit *,
struct bch_move_stats *,
struct write_point_specifier,
bool,
move_pred_fn, void *);
int __bch2_evacuate_bucket(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_to_text(struct printbuf *, struct bch_move_stats *);
void bch2_move_stats_exit(struct bch_move_stats *, struct bch_fs *);
void bch2_move_stats_init(struct bch_move_stats *, char *);
void bch2_fs_moving_ctxts_to_text(struct printbuf *, struct bch_fs *);
void bch2_fs_move_init(struct bch_fs *);
#endif /* _BCACHEFS_MOVE_H */
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