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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_JOURNAL_IO_H
#define _BCACHEFS_JOURNAL_IO_H
#include "darray.h"
struct journal_ptr {
bool csum_good;
u8 dev;
u32 bucket;
u32 bucket_offset;
u64 sector;
};
/*
* Only used for holding the journal entries we read in btree_journal_read()
* during cache_registration
*/
struct journal_replay {
DARRAY_PREALLOCATED(struct journal_ptr, 8) 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);
static inline struct jset_entry *jset_entry_init(struct jset_entry **end, size_t size)
{
struct jset_entry *entry = *end;
unsigned u64s = DIV_ROUND_UP(size, sizeof(u64));
memset(entry, 0, u64s * sizeof(u64));
/*
* The u64s field counts from the start of data, ignoring the shared
* fields.
*/
entry->u64s = cpu_to_le16(u64s - 1);
*end = vstruct_next(*end);
return entry;
}
#endif /* _BCACHEFS_JOURNAL_IO_H */
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