fs/bcachefs/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         u32                     stripe_sectors;
  20 } __aligned(sizeof(long));
  21
  22 struct bucket_gens {
  23         struct rcu_head         rcu;
  24         u16                     first_bucket;
  25         size_t                  nbuckets;
  26         size_t                  nbuckets_minus_first;
  27         u8                      b[] __counted_by(nbuckets);
  28 };
  29
  30 struct bch_dev_usage {
  31         struct bch_dev_usage_type {
  32                 u64             buckets;
  33                 u64             sectors; /* _compressed_ sectors: */
  34                 /*
  35                  * XXX
  36                  * Why do we have this? Isn't it just buckets * bucket_size -
  37                  * sectors?
  38                  */
  39                 u64             fragmented;
  40         }                       d[BCH_DATA_NR];
  41 };
  42
  43 struct bch_fs_usage_base {
  44         u64                     hidden;
  45         u64                     btree;
  46         u64                     data;
  47         u64                     cached;
  48         u64                     reserved;
  49         u64                     nr_inodes;
  50 };
  51
  52 struct bch_fs_usage_short {
  53         u64                     capacity;
  54         u64                     used;
  55         u64                     free;
  56         u64                     nr_inodes;
  57 };
  58
  59 /*
  60  * A reservation for space on disk:
  61  */
  62 struct disk_reservation {
  63         u64                     sectors;
  64         u32                     gen;
  65         unsigned                nr_replicas;
  66 };
  67
  68 #endif /* _BUCKETS_TYPES_H */