fs/bcachefs/replicas.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BCACHEFS_REPLICAS_H
   3 #define _BCACHEFS_REPLICAS_H
   4
   5 #include "bkey.h"
   6 #include "eytzinger.h"
   7 #include "replicas_types.h"
   8
   9 void bch2_replicas_entry_sort(struct bch_replicas_entry_v1 *);
  10 void bch2_replicas_entry_to_text(struct printbuf *,
  11                                  struct bch_replicas_entry_v1 *);
  12 int bch2_replicas_entry_validate(struct bch_replicas_entry_v1 *,
  13                                  struct bch_fs *, struct printbuf *);
  14 void bch2_cpu_replicas_to_text(struct printbuf *, struct bch_replicas_cpu *);
  15
  16 static inline struct bch_replicas_entry_v1 *
  17 cpu_replicas_entry(struct bch_replicas_cpu *r, unsigned i)
  18 {
  19         return (void *) r->entries + r->entry_size * i;
  20 }
  21
  22 int bch2_replicas_entry_idx(struct bch_fs *,
  23                             struct bch_replicas_entry_v1 *);
  24
  25 void bch2_devlist_to_replicas(struct bch_replicas_entry_v1 *,
  26                               enum bch_data_type,
  27                               struct bch_devs_list);
  28
  29 bool bch2_replicas_marked_locked(struct bch_fs *,
  30                           struct bch_replicas_entry_v1 *);
  31 bool bch2_replicas_marked(struct bch_fs *, struct bch_replicas_entry_v1 *);
  32 int bch2_mark_replicas(struct bch_fs *,
  33                        struct bch_replicas_entry_v1 *);
  34
  35 void bch2_bkey_to_replicas(struct bch_replicas_entry_v1 *, struct bkey_s_c);
  36
  37 static inline void bch2_replicas_entry_cached(struct bch_replicas_entry_v1 *e,
  38                                               unsigned dev)
  39 {
  40         e->data_type    = BCH_DATA_cached;
  41         e->nr_devs      = 1;
  42         e->nr_required  = 1;
  43         e->devs[0]      = dev;
  44 }
  45
  46 bool bch2_have_enough_devs(struct bch_fs *, struct bch_devs_mask,
  47                            unsigned, bool);
  48
  49 unsigned bch2_sb_dev_has_data(struct bch_sb *, unsigned);
  50 unsigned bch2_dev_has_data(struct bch_fs *, struct bch_dev *);
  51
  52 int bch2_replicas_gc_end(struct bch_fs *, int);
  53 int bch2_replicas_gc_start(struct bch_fs *, unsigned);
  54 int bch2_replicas_gc2(struct bch_fs *);
  55
  56 #define for_each_cpu_replicas_entry(_r, _i)                             \
  57         for (_i = (_r)->entries;                                        \
  58              (void *) (_i) < (void *) (_r)->entries + (_r)->nr * (_r)->entry_size;\
  59              _i = (void *) (_i) + (_r)->entry_size)
  60
  61 /* iterate over superblock replicas - used by userspace tools: */
  62
  63 #define replicas_entry_next(_i)                                         \
  64         ((typeof(_i)) ((void *) (_i) + replicas_entry_bytes(_i)))
  65
  66 #define for_each_replicas_entry(_r, _i)                                 \
  67         for (_i = (_r)->entries;                                        \
  68              (void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
  69              (_i) = replicas_entry_next(_i))
  70
  71 #define for_each_replicas_entry_v0(_r, _i)                              \
  72         for (_i = (_r)->entries;                                        \
  73              (void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
  74              (_i) = replicas_entry_next(_i))
  75
  76 int bch2_sb_replicas_to_cpu_replicas(struct bch_fs *);
  77
  78 extern const struct bch_sb_field_ops bch_sb_field_ops_replicas;
  79 extern const struct bch_sb_field_ops bch_sb_field_ops_replicas_v0;
  80
  81 void bch2_fs_replicas_exit(struct bch_fs *);
  82
  83 #endif /* _BCACHEFS_REPLICAS_H */