git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/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 list_head        list;
  11         struct bch_extent_ptr   ptrs[BCH_REPLICAS_MAX];
  12         unsigned                nr_ptrs;
  13
  14         /* checksum error, but we may want to try using it anyways: */
  15         bool                    bad;
  16         bool                    ignore;
  17         /* must be last: */
  18         struct jset             j;
  19 };
  20
  21 static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
  22                                         struct jset_entry *entry, unsigned type)
  23 {
  24         while (entry < vstruct_last(jset)) {
  25                 if (entry->type == type)
  26                         return entry;
  27
  28                 entry = vstruct_next(entry);
  29         }
  30
  31         return NULL;
  32 }
  33
  34 #define for_each_jset_entry_type(entry, jset, type)                     \
  35         for (entry = (jset)->start;                                     \
  36              (entry = __jset_entry_type_next(jset, entry, type));       \
  37              entry = vstruct_next(entry))
  38
  39 #define for_each_jset_key(k, _n, entry, jset)                           \
  40         for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)        \
  41                 vstruct_for_each_safe(entry, k, _n)
  42
  43 int bch2_journal_entry_validate(struct bch_fs *, const char *,
  44                                 struct jset_entry *, unsigned, int, int);
  45 void bch2_journal_entry_to_text(struct printbuf *, struct bch_fs *,
  46                                 struct jset_entry *);
  47
  48 int bch2_journal_read(struct bch_fs *, struct list_head *, u64 *, u64 *);
  49
  50 void bch2_journal_write(struct closure *);
  51
  52 #endif /* _BCACHEFS_JOURNAL_IO_H */