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linux/fs/bcachefs/journal_sb.h
Kent Overstreet 25be2e5d4a bcachefs: bch_sb_field_journal_v2
Add a new superblock field which represents journal buckets as ranges:
also move code for the superblock journal fields to journal_sb.c.

This also reworks the code for resizing the journal to write the new
superblock before using the new journal buckets, and thus be a bit
safer.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-22 17:09:29 -04:00

25 lines
639 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#include "super-io.h"
#include "vstructs.h"
static inline unsigned bch2_nr_journal_buckets(struct bch_sb_field_journal *j)
{
return j
? (__le64 *) vstruct_end(&j->field) - j->buckets
: 0;
}
static inline unsigned bch2_sb_field_journal_v2_nr_entries(struct bch_sb_field_journal_v2 *j)
{
if (!j)
return 0;
return (struct bch_sb_field_journal_v2_entry *) vstruct_end(&j->field) - &j->d[0];
}
extern const struct bch_sb_field_ops bch_sb_field_ops_journal;
extern const struct bch_sb_field_ops bch_sb_field_ops_journal_v2;
int bch2_journal_buckets_to_sb(struct bch_fs *, struct bch_dev *);