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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_EC_H
#define _BCACHEFS_EC_H
#include "ec_types.h"
#include "keylist_types.h"
const char *bch2_ec_key_invalid(const struct bch_fs *, struct bkey_s_c);
void bch2_ec_key_to_text(struct printbuf *, struct bch_fs *,
struct bkey_s_c);
#define bch2_bkey_ec_ops (struct bkey_ops) { \
.key_invalid = bch2_ec_key_invalid, \
.val_to_text = bch2_ec_key_to_text, \
}
struct bch_read_bio;
struct ec_stripe_buf {
/* might not be buffering the entire stripe: */
unsigned offset;
unsigned size;
unsigned long valid[BITS_TO_LONGS(EC_STRIPE_MAX)];
void *data[EC_STRIPE_MAX];
union {
struct bkey_i_stripe key;
u64 pad[255];
};
};
struct ec_stripe_head;
struct ec_stripe_new {
struct bch_fs *c;
struct ec_stripe_head *h;
struct mutex lock;
struct list_head list;
/* counts in flight writes, stripe is created when pin == 0 */
atomic_t pin;
int err;
unsigned long blocks_allocated[BITS_TO_LONGS(EC_STRIPE_MAX)];
struct open_buckets blocks;
struct open_buckets parity;
struct keylist keys;
u64 inline_keys[BKEY_U64s * 8];
struct ec_stripe_buf stripe;
};
struct ec_stripe_head {
struct list_head list;
struct mutex lock;
struct list_head stripes;
unsigned target;
unsigned algo;
unsigned redundancy;
struct bch_devs_mask devs;
unsigned nr_active_devs;
unsigned blocksize;
struct dev_stripe_state block_stripe;
struct dev_stripe_state parity_stripe;
struct open_buckets blocks;
struct open_buckets parity;
struct ec_stripe_new *s;
};
int bch2_ec_read_extent(struct bch_fs *, struct bch_read_bio *);
void *bch2_writepoint_ec_buf(struct bch_fs *, struct write_point *);
void bch2_ec_add_backpointer(struct bch_fs *, struct write_point *,
struct bpos, unsigned);
void bch2_ec_bucket_written(struct bch_fs *, struct open_bucket *);
void bch2_ec_bucket_cancel(struct bch_fs *, struct open_bucket *);
int bch2_ec_stripe_new_alloc(struct bch_fs *, struct ec_stripe_head *);
void bch2_ec_stripe_head_put(struct ec_stripe_head *);
struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *, unsigned,
unsigned, unsigned);
void bch2_stripes_heap_update(struct bch_fs *, struct ec_stripe *, size_t);
void bch2_stripes_heap_del(struct bch_fs *, struct ec_stripe *, size_t);
void bch2_stripes_heap_insert(struct bch_fs *, struct ec_stripe *, size_t);
void bch2_ec_stop_dev(struct bch_fs *, struct bch_dev *);
void bch2_ec_flush_new_stripes(struct bch_fs *);
int bch2_fs_ec_start(struct bch_fs *);
void bch2_fs_ec_exit(struct bch_fs *);
int bch2_fs_ec_init(struct bch_fs *);
#endif /* _BCACHEFS_EC_H */
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