git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/buckets_types.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BUCKETS_TYPES_H
   3 #define _BUCKETS_TYPES_H
   4
   5 #include "bcachefs_format.h"
   6 #include "util.h"
   7
   8 #define BUCKET_JOURNAL_SEQ_BITS         16
   9
  10 struct bucket {
  11         u8                      lock;
  12         u8                      gen_valid:1;
  13         u8                      data_type:7;
  14         u8                      gen;
  15         u8                      stripe_redundancy;
  16         u32                     stripe;
  17         u32                     dirty_sectors;
  18         u32                     cached_sectors;
  19 };
  20
  21 struct bucket_array {
  22         struct rcu_head         rcu;
  23         u16                     first_bucket;
  24         size_t                  nbuckets;
  25         struct bucket           b[];
  26 };
  27
  28 struct bucket_gens {
  29         struct rcu_head         rcu;
  30         u16                     first_bucket;
  31         size_t                  nbuckets;
  32         u8                      b[];
  33 };
  34
  35 struct bch_dev_usage {
  36         struct {
  37                 u64             buckets;
  38                 u64             sectors; /* _compressed_ sectors: */
  39                 /*
  40                  * XXX
  41                  * Why do we have this? Isn't it just buckets * bucket_size -
  42                  * sectors?
  43                  */
  44                 u64             fragmented;
  45         }                       d[BCH_DATA_NR];
  46 };
  47
  48 struct bch_fs_usage_base {
  49         u64                     hidden;
  50         u64                     btree;
  51         u64                     data;
  52         u64                     cached;
  53         u64                     reserved;
  54         u64                     nr_inodes;
  55 };
  56
  57 struct bch_fs_usage {
  58         /* all fields are in units of 512 byte sectors: */
  59         struct bch_fs_usage_base b;
  60         u64                     persistent_reserved[BCH_REPLICAS_MAX];
  61         u64                     replicas[];
  62 };
  63
  64 struct bch_fs_usage_online {
  65         u64                     online_reserved;
  66         struct bch_fs_usage     u;
  67 };
  68
  69 struct bch_fs_usage_short {
  70         u64                     capacity;
  71         u64                     used;
  72         u64                     free;
  73         u64                     nr_inodes;
  74 };
  75
  76 /*
  77  * A reservation for space on disk:
  78  */
  79 struct disk_reservation {
  80         u64                     sectors;
  81         u32                     gen;
  82         unsigned                nr_replicas;
  83 };
  84
  85 #endif /* _BUCKETS_TYPES_H */