1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _BCACHEFS_JOURNAL_IO_H 3 #define _BCACHEFS_JOURNAL_IO_H 4 5 #include "darray.h" 6 7 void bch2_journal_pos_from_member_info_set(struct bch_fs *); 8 void bch2_journal_pos_from_member_info_resume(struct bch_fs *); 9 10 struct journal_ptr { 11 bool csum_good; 12 u8 dev; 13 u32 bucket; 14 u32 bucket_offset; 15 u64 sector; 16 }; 17 18 /* 19 * Only used for holding the journal entries we read in btree_journal_read() 20 * during cache_registration 21 */ 22 struct journal_replay { 23 DARRAY_PREALLOCATED(struct journal_ptr, 8) ptrs; 24 25 bool csum_good; 26 bool ignore_blacklisted; 27 bool ignore_not_dirty; 28 /* must be last: */ 29 struct jset j; 30 }; 31 32 static inline bool journal_replay_ignore(struct journal_replay *i) 33 { 34 return !i || i->ignore_blacklisted || i->ignore_not_dirty; 35 } 36 37 static inline struct jset_entry *__jset_entry_type_next(struct jset *jset, 38 struct jset_entry *entry, unsigned type) 39 { 40 while (entry < vstruct_last(jset)) { 41 if (entry->type == type) 42 return entry; 43 44 entry = vstruct_next(entry); 45 } 46 47 return NULL; 48 } 49 50 #define for_each_jset_entry_type(entry, jset, type) \ 51 for (struct jset_entry *entry = (jset)->start; \ 52 (entry = __jset_entry_type_next(jset, entry, type)); \ 53 entry = vstruct_next(entry)) 54 55 #define jset_entry_for_each_key(_e, _k) \ 56 for (struct bkey_i *_k = (_e)->start; \ 57 _k < vstruct_last(_e); \ 58 _k = bkey_next(_k)) 59 60 #define for_each_jset_key(k, entry, jset) \ 61 for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)\ 62 jset_entry_for_each_key(entry, k) 63 64 int bch2_journal_entry_validate(struct bch_fs *, struct jset *, 65 struct jset_entry *, unsigned, int, 66 enum bch_validate_flags); 67 void bch2_journal_entry_to_text(struct printbuf *, struct bch_fs *, 68 struct jset_entry *); 69 70 void bch2_journal_ptrs_to_text(struct printbuf *, struct bch_fs *, 71 struct journal_replay *); 72 73 int bch2_journal_read(struct bch_fs *, u64 *, u64 *, u64 *); 74 75 CLOSURE_CALLBACK(bch2_journal_write); 76 77 static inline struct jset_entry *jset_entry_init(struct jset_entry **end, size_t size) 78 { 79 struct jset_entry *entry = *end; 80 unsigned u64s = DIV_ROUND_UP(size, sizeof(u64)); 81 82 memset(entry, 0, u64s * sizeof(u64)); 83 /* 84 * The u64s field counts from the start of data, ignoring the shared 85 * fields. 86 */ 87 entry->u64s = cpu_to_le16(u64s - 1); 88 89 *end = vstruct_next(*end); 90 return entry; 91 } 92 93 #endif /* _BCACHEFS_JOURNAL_IO_H */ 94