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-rw-r--r--fs/bcachefs/journal_io.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/fs/bcachefs/journal_io.h b/fs/bcachefs/journal_io.h
new file mode 100644
index 0000000000..c035e7c108
--- /dev/null
+++ b/fs/bcachefs/journal_io.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_JOURNAL_IO_H
+#define _BCACHEFS_JOURNAL_IO_H
+
+/*
+ * Only used for holding the journal entries we read in btree_journal_read()
+ * during cache_registration
+ */
+struct journal_replay {
+ struct journal_ptr {
+ bool csum_good;
+ u8 dev;
+ u32 bucket;
+ u32 bucket_offset;
+ u64 sector;
+ } ptrs[BCH_REPLICAS_MAX];
+ unsigned nr_ptrs;
+
+ bool csum_good;
+ bool ignore;
+ /* must be last: */
+ struct jset j;
+};
+
+static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
+ struct jset_entry *entry, unsigned type)
+{
+ while (entry < vstruct_last(jset)) {
+ if (entry->type == type)
+ return entry;
+
+ entry = vstruct_next(entry);
+ }
+
+ return NULL;
+}
+
+#define for_each_jset_entry_type(entry, jset, type) \
+ for (entry = (jset)->start; \
+ (entry = __jset_entry_type_next(jset, entry, type)); \
+ entry = vstruct_next(entry))
+
+#define jset_entry_for_each_key(_e, _k) \
+ for (_k = (_e)->start; \
+ _k < vstruct_last(_e); \
+ _k = bkey_next(_k))
+
+#define for_each_jset_key(k, entry, jset) \
+ for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)\
+ jset_entry_for_each_key(entry, k)
+
+int bch2_journal_entry_validate(struct bch_fs *, struct jset *,
+ struct jset_entry *, unsigned, int,
+ enum bkey_invalid_flags);
+void bch2_journal_entry_to_text(struct printbuf *, struct bch_fs *,
+ struct jset_entry *);
+
+void bch2_journal_ptrs_to_text(struct printbuf *, struct bch_fs *,
+ struct journal_replay *);
+
+int bch2_journal_read(struct bch_fs *, u64 *, u64 *, u64 *);
+
+CLOSURE_CALLBACK(bch2_journal_write);
+
+#endif /* _BCACHEFS_JOURNAL_IO_H */