1dd7f9d98d
Now, we store blacklisted journal sequence numbers in the superblock, not the journal: this helps to greatly simplify the code, and more importantly it's now implemented in a way that doesn't require all btree nodes to be visited before starting the journal - instead, we unconditionally blacklist the next 4 journal sequence numbers after an unclean shutdown. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_JOURNAL_IO_H
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#define _BCACHEFS_JOURNAL_IO_H
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/*
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* Only used for holding the journal entries we read in btree_journal_read()
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* during cache_registration
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*/
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struct journal_replay {
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struct list_head list;
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struct bch_devs_list devs;
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/* must be last: */
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struct jset j;
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};
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static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
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struct jset_entry *entry, unsigned type)
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{
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while (entry < vstruct_last(jset)) {
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if (entry->type == type)
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return entry;
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entry = vstruct_next(entry);
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}
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return NULL;
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}
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#define for_each_jset_entry_type(entry, jset, type) \
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for (entry = (jset)->start; \
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(entry = __jset_entry_type_next(jset, entry, type)); \
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entry = vstruct_next(entry))
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#define for_each_jset_key(k, _n, entry, jset) \
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for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys) \
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vstruct_for_each_safe(entry, k, _n)
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int bch2_journal_read(struct bch_fs *, struct list_head *);
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void bch2_journal_entries_free(struct list_head *);
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int bch2_journal_replay(struct bch_fs *, struct list_head *);
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void bch2_journal_write(struct closure *);
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#endif /* _BCACHEFS_JOURNAL_IO_H */
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