84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_REPLICAS_H
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#define _BCACHEFS_REPLICAS_H
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#include "eytzinger.h"
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#include "replicas_types.h"
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void bch2_replicas_entry_to_text(struct printbuf *,
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struct bch_replicas_entry *);
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void bch2_cpu_replicas_to_text(struct printbuf *, struct bch_replicas_cpu *);
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static inline struct bch_replicas_entry *
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cpu_replicas_entry(struct bch_replicas_cpu *r, unsigned i)
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{
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return (void *) r->entries + r->entry_size * i;
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}
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int bch2_replicas_entry_idx(struct bch_fs *,
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struct bch_replicas_entry *);
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void bch2_devlist_to_replicas(struct bch_replicas_entry *,
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enum bch_data_type,
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struct bch_devs_list);
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bool bch2_replicas_marked(struct bch_fs *,
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struct bch_replicas_entry *, bool);
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int bch2_mark_replicas(struct bch_fs *,
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struct bch_replicas_entry *);
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bool bch2_bkey_replicas_marked(struct bch_fs *,
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struct bkey_s_c, bool);
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int bch2_mark_bkey_replicas(struct bch_fs *, struct bkey_s_c);
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static inline void bch2_replicas_entry_cached(struct bch_replicas_entry *e,
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unsigned dev)
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{
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e->data_type = BCH_DATA_CACHED;
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e->nr_devs = 1;
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e->nr_required = 1;
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e->devs[0] = dev;
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}
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struct replicas_status {
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struct {
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int redundancy;
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unsigned nr_offline;
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} replicas[BCH_DATA_NR];
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};
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struct replicas_status __bch2_replicas_status(struct bch_fs *,
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struct bch_devs_mask);
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struct replicas_status bch2_replicas_status(struct bch_fs *);
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bool bch2_have_enough_devs(struct replicas_status, unsigned);
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int bch2_replicas_online(struct bch_fs *, bool);
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unsigned bch2_dev_has_data(struct bch_fs *, struct bch_dev *);
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int bch2_replicas_gc_end(struct bch_fs *, int);
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int bch2_replicas_gc_start(struct bch_fs *, unsigned);
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/* iterate over superblock replicas - used by userspace tools: */
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#define replicas_entry_bytes(_i) \
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(offsetof(typeof(*(_i)), devs) + (_i)->nr_devs)
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#define replicas_entry_next(_i) \
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((typeof(_i)) ((void *) (_i) + replicas_entry_bytes(_i)))
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#define for_each_replicas_entry(_r, _i) \
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for (_i = (_r)->entries; \
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(void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
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(_i) = replicas_entry_next(_i))
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#define for_each_replicas_entry_v0(_r, _i) \
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for (_i = (_r)->entries; \
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(void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
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(_i) = replicas_entry_next(_i))
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int bch2_sb_replicas_to_cpu_replicas(struct bch_fs *);
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extern const struct bch_sb_field_ops bch_sb_field_ops_replicas;
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extern const struct bch_sb_field_ops bch_sb_field_ops_replicas_v0;
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#endif /* _BCACHEFS_REPLICAS_H */
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