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_mark {
  11         union {
  12         atomic64_t      v;
  13
  14         struct {
  15         u8              gen;
  16         u8              data_type:3,
  17                         owned_by_allocator:1,
  18                         stripe:1;
  19         u16             dirty_sectors;
  20         u16             cached_sectors;
  21         };
  22         };
  23 };
  24
  25 struct bucket {
  26         union {
  27                 struct bucket_mark      _mark;
  28                 const struct bucket_mark mark;
  29         };
  30
  31         u64                             io_time[2];
  32         u8                              oldest_gen;
  33         unsigned                        gen_valid:1;
  34         u8                              stripe_redundancy;
  35         u32                             stripe;
  36 };
  37
  38 struct bucket_array {
  39         struct rcu_head         rcu;
  40         u16                     first_bucket;
  41         size_t                  nbuckets;
  42         struct bucket           b[];
  43 };
  44
  45 struct bucket_gens {
  46         struct rcu_head         rcu;
  47         u16                     first_bucket;
  48         size_t                  nbuckets;
  49         u8                      b[];
  50 };
  51
  52 struct bch_dev_usage {
  53         u64                     buckets_ec;
  54         u64                     buckets_unavailable;
  55
  56         struct {
  57                 u64             buckets;
  58                 u64             sectors; /* _compressed_ sectors: */
  59                 /*
  60                  * XXX
  61                  * Why do we have this? Isn't it just buckets * bucket_size -
  62                  * sectors?
  63                  */
  64                 u64             fragmented;
  65         }                       d[BCH_DATA_NR];
  66 };
  67
  68 struct bch_fs_usage {
  69         /* all fields are in units of 512 byte sectors: */
  70         u64                     hidden;
  71         u64                     btree;
  72         u64                     data;
  73         u64                     cached;
  74         u64                     reserved;
  75         u64                     nr_inodes;
  76
  77         /* XXX: add stats for compression ratio */
  78 #if 0
  79         u64                     uncompressed;
  80         u64                     compressed;
  81 #endif
  82
  83         /* broken out: */
  84
  85         u64                     persistent_reserved[BCH_REPLICAS_MAX];
  86         u64                     replicas[];
  87 };
  88
  89 struct bch_fs_usage_online {
  90         u64                     online_reserved;
  91         struct bch_fs_usage     u;
  92 };
  93
  94 struct bch_fs_usage_short {
  95         u64                     capacity;
  96         u64                     used;
  97         u64                     free;
  98         u64                     nr_inodes;
  99 };
 100
 101 /*
 102  * A reservation for space on disk:
 103  */
 104 struct disk_reservation {
 105         u64                     sectors;
 106         u32                     gen;
 107         unsigned                nr_replicas;
 108 };
 109
 110 struct copygc_heap_entry {
 111         u8                      dev;
 112         u8                      gen;
 113         u8                      replicas;
 114         u16                     fragmentation;
 115         u32                     sectors;
 116         u64                     offset;
 117 };
 118
 119 typedef HEAP(struct copygc_heap_entry) copygc_heap;
 120
 121 #endif /* _BUCKETS_TYPES_H */