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