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         bool                    ignore;
  15         /* must be last: */
  16         struct jset             j;
  17 };
  18
  19 static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
  20                                         struct jset_entry *entry, unsigned type)
  21 {
  22         while (entry < vstruct_last(jset)) {
  23                 if (entry->type == type)
  24                         return entry;
  25
  26                 entry = vstruct_next(entry);
  27         }
  28
  29         return NULL;
  30 }
  31
  32 #define for_each_jset_entry_type(entry, jset, type)                     \
  33         for (entry = (jset)->start;                                     \
  34              (entry = __jset_entry_type_next(jset, entry, type));       \
  35              entry = vstruct_next(entry))
  36
  37 #define for_each_jset_key(k, _n, entry, jset)                           \
  38         for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)        \
  39                 vstruct_for_each_safe(entry, k, _n)
  40
  41 int bch2_journal_read(struct bch_fs *, struct list_head *, u64 *, u64 *);
  42
  43 void bch2_journal_write(struct closure *);
  44
  45 #endif /* _BCACHEFS_JOURNAL_IO_H */