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_devs_list    devs;
  12         /* checksum error, but we may want to try using it anyways: */
  13         bool                    bad;
  14         /* must be last: */
  15         struct jset             j;
  16 };
  17
  18 static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
  19                                         struct jset_entry *entry, unsigned type)
  20 {
  21         while (entry < vstruct_last(jset)) {
  22                 if (entry->type == type)
  23                         return entry;
  24
  25                 entry = vstruct_next(entry);
  26         }
  27
  28         return NULL;
  29 }
  30
  31 #define for_each_jset_entry_type(entry, jset, type)                     \
  32         for (entry = (jset)->start;                                     \
  33              (entry = __jset_entry_type_next(jset, entry, type));       \
  34              entry = vstruct_next(entry))
  35
  36 #define for_each_jset_key(k, _n, entry, jset)                           \
  37         for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)        \
  38                 vstruct_for_each_safe(entry, k, _n)
  39
  40 int bch2_journal_read(struct bch_fs *, struct list_head *);
  41
  42 void bch2_journal_write(struct closure *);
  43
  44 #endif /* _BCACHEFS_JOURNAL_IO_H */