fs/bcachefs/journal_io.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BCACHEFS_JOURNAL_IO_H
   3 #define _BCACHEFS_JOURNAL_IO_H
   4
   5 /*
   6  * Only used for holding the journal entries we read in btree_journal_read()
   7  * during cache_registration
   8  */
   9 struct journal_replay {
  10         struct journal_ptr {
  11                 bool            csum_good;
  12                 u8              dev;
  13                 u32             bucket;
  14                 u32             bucket_offset;
  15                 u64             sector;
  16         }                       ptrs[BCH_REPLICAS_MAX];
  17         unsigned                nr_ptrs;
  18
  19         bool                    csum_good;
  20         bool                    ignore;
  21         /* must be last: */
  22         struct jset             j;
  23 };
  24
  25 static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
  26                                         struct jset_entry *entry, unsigned type)
  27 {
  28         while (entry < vstruct_last(jset)) {
  29                 if (entry->type == type)
  30                         return entry;
  31
  32                 entry = vstruct_next(entry);
  33         }
  34
  35         return NULL;
  36 }
  37
  38 #define for_each_jset_entry_type(entry, jset, type)                     \
  39         for (entry = (jset)->start;                                     \
  40              (entry = __jset_entry_type_next(jset, entry, type));       \
  41              entry = vstruct_next(entry))
  42
  43 #define jset_entry_for_each_key(_e, _k)                                 \
  44         for (_k = (_e)->start;                                          \
  45              _k < vstruct_last(_e);                                     \
  46              _k = bkey_next(_k))
  47
  48 #define for_each_jset_key(k, entry, jset)                               \
  49         for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)\
  50                 jset_entry_for_each_key(entry, k)
  51
  52 int bch2_journal_entry_validate(struct bch_fs *, struct jset *,
  53                                 struct jset_entry *, unsigned, int,
  54                                 enum bkey_invalid_flags);
  55 void bch2_journal_entry_to_text(struct printbuf *, struct bch_fs *,
  56                                 struct jset_entry *);
  57
  58 void bch2_journal_ptrs_to_text(struct printbuf *, struct bch_fs *,
  59                                struct journal_replay *);
  60
  61 int bch2_journal_read(struct bch_fs *, u64 *, u64 *, u64 *);
  62
  63 void bch2_journal_write(struct closure *);
  64
  65 #endif /* _BCACHEFS_JOURNAL_IO_H */