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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2022-03-11 00:43:52 +0300 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-23 00:09:29 +0300 |
| commit | 25be2e5d4a051ff2408c7ab007394e96798cf559 (patch) | |
| tree | 2bf05701315558ea320da6c2b9a00403d8dd1343 /fs/bcachefs/journal_sb.h | |
| parent | b17d3cec14b487924df709dbeffb900f124a2607 (diff) | |
| download | linux-25be2e5d4a051ff2408c7ab007394e96798cf559.tar.xz | |
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>
Diffstat (limited to 'fs/bcachefs/journal_sb.h')
| -rw-r--r-- | fs/bcachefs/journal_sb.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/bcachefs/journal_sb.h b/fs/bcachefs/journal_sb.h new file mode 100644 index 000000000000..a39192e9f6f4 --- /dev/null +++ b/fs/bcachefs/journal_sb.h @@ -0,0 +1,24 @@ +/* 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 *); |