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#ifndef _BCACHE_MOVE_H
#define _BCACHE_MOVE_H
#include "buckets.h"
#include "io_types.h"
#include "move_types.h"
enum moving_flag_bitnos {
MOVING_FLAG_BITNO_READ = 0,
MOVING_FLAG_BITNO_WRITE,
};
#define MOVING_FLAG_READ (1U << MOVING_FLAG_BITNO_READ)
#define MOVING_FLAG_WRITE (1U << MOVING_FLAG_BITNO_WRITE)
struct migrate_write {
BKEY_PADDED(key);
bool promote;
bool move;
struct bch_extent_ptr move_ptr;
struct bch_write_op op;
struct bch_write_bio wbio;
};
void bch2_migrate_write_init(struct bch_fs *,
struct migrate_write *,
struct write_point *,
struct bkey_s_c,
const struct bch_extent_ptr *,
unsigned);
#define SECTORS_IN_FLIGHT_PER_DEVICE 2048
struct moving_context {
/* Closure for waiting on all reads and writes to complete */
struct closure cl;
/* Number and types of errors reported */
atomic_t error_count;
atomic_t error_flags;
/* Key and sector moves issued, updated from submission context */
u64 keys_moved;
u64 sectors_moved;
/* Rate-limiter counting submitted reads */
struct bch_ratelimit *rate;
/* Try to avoid reading the following device */
struct bch_dev *avoid;
struct list_head reads;
/* Configuration */
unsigned max_sectors_in_flight;
atomic_t sectors_in_flight;
wait_queue_head_t wait;
};
struct moving_io {
struct list_head list;
struct rb_node node;
struct closure cl;
struct moving_context *ctxt;
struct migrate_write write;
bool read_completed;
struct bch_read_bio rbio;
/* Must be last since it is variable size */
struct bio_vec bi_inline_vecs[0];
};
int bch2_data_move(struct bch_fs *,
struct moving_context *,
struct write_point *,
struct bkey_s_c,
const struct bch_extent_ptr *);
int bch2_move_ctxt_wait(struct moving_context *);
void bch2_move_ctxt_wait_for_io(struct moving_context *);
void bch2_move_ctxt_exit(struct moving_context *);
void bch2_move_ctxt_init(struct moving_context *, struct bch_ratelimit *,
unsigned);
#endif /* _BCACHE_MOVE_H */
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