diff options
Diffstat (limited to 'fs/bcachefs/replicas_format.h')
| -rw-r--r-- | fs/bcachefs/replicas_format.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/fs/bcachefs/replicas_format.h b/fs/bcachefs/replicas_format.h new file mode 100644 index 000000000000..b7eff904acdb --- /dev/null +++ b/fs/bcachefs/replicas_format.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_REPLICAS_FORMAT_H +#define _BCACHEFS_REPLICAS_FORMAT_H + +struct bch_replicas_entry_v0 { + __u8 data_type; + __u8 nr_devs; + __u8 devs[] __counted_by(nr_devs); +} __packed; + +struct bch_sb_field_replicas_v0 { + struct bch_sb_field field; + struct bch_replicas_entry_v0 entries[]; +} __packed __aligned(8); + +struct bch_replicas_entry_v1 { + __u8 data_type; + __u8 nr_devs; + __u8 nr_required; + __u8 devs[] __counted_by(nr_devs); +} __packed; + +struct bch_sb_field_replicas { + struct bch_sb_field field; + struct bch_replicas_entry_v1 entries[]; +} __packed __aligned(8); + +#define replicas_entry_bytes(_i) \ + (offsetof(typeof(*(_i)), devs) + (_i)->nr_devs) + +#define replicas_entry_add_dev(e, d) ({ \ + (e)->nr_devs++; \ + (e)->devs[(e)->nr_devs - 1] = (d); \ +}) + +#endif /* _BCACHEFS_REPLICAS_FORMAT_H */ |