mirror of
https://github.com/torvalds/linux.git
synced 2024-11-26 22:21:42 +00:00
150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _BCACHEFS_SUPER_IO_H
|
|
#define _BCACHEFS_SUPER_IO_H
|
|
|
|
#include "extents.h"
|
|
#include "eytzinger.h"
|
|
#include "super_types.h"
|
|
#include "super.h"
|
|
|
|
#include <asm/byteorder.h>
|
|
|
|
struct bch_sb_field *bch2_sb_field_get(struct bch_sb *, enum bch_sb_field_type);
|
|
struct bch_sb_field *bch2_sb_field_resize(struct bch_sb_handle *,
|
|
enum bch_sb_field_type, unsigned);
|
|
void bch2_sb_field_delete(struct bch_sb_handle *, enum bch_sb_field_type);
|
|
|
|
#define field_to_type(_f, _name) \
|
|
container_of_or_null(_f, struct bch_sb_field_##_name, field)
|
|
|
|
#define x(_name, _nr) \
|
|
static inline struct bch_sb_field_##_name * \
|
|
bch2_sb_get_##_name(struct bch_sb *sb) \
|
|
{ \
|
|
return field_to_type(bch2_sb_field_get(sb, \
|
|
BCH_SB_FIELD_##_name), _name); \
|
|
} \
|
|
\
|
|
static inline struct bch_sb_field_##_name * \
|
|
bch2_sb_resize_##_name(struct bch_sb_handle *sb, unsigned u64s) \
|
|
{ \
|
|
return field_to_type(bch2_sb_field_resize(sb, \
|
|
BCH_SB_FIELD_##_name, u64s), _name); \
|
|
}
|
|
|
|
BCH_SB_FIELDS()
|
|
#undef x
|
|
|
|
extern const char * const bch2_sb_fields[];
|
|
|
|
struct bch_sb_field_ops {
|
|
const char * (*validate)(struct bch_sb *, struct bch_sb_field *);
|
|
void (*to_text)(struct printbuf *, struct bch_sb *,
|
|
struct bch_sb_field *);
|
|
};
|
|
|
|
static inline bool bch2_sb_test_feature(struct bch_sb *sb,
|
|
enum bch_sb_features f)
|
|
{
|
|
unsigned w = f / 64;
|
|
unsigned b = f % 64;
|
|
|
|
return le64_to_cpu(sb->features[w]) & (1ULL << b);
|
|
}
|
|
|
|
static inline void bch2_sb_set_feature(struct bch_sb *sb,
|
|
enum bch_sb_features f)
|
|
{
|
|
if (!bch2_sb_test_feature(sb, f)) {
|
|
unsigned w = f / 64;
|
|
unsigned b = f % 64;
|
|
|
|
le64_add_cpu(&sb->features[w], 1ULL << b);
|
|
}
|
|
}
|
|
|
|
static inline __le64 bch2_sb_magic(struct bch_fs *c)
|
|
{
|
|
__le64 ret;
|
|
memcpy(&ret, &c->sb.uuid, sizeof(ret));
|
|
return ret;
|
|
}
|
|
|
|
static inline __u64 jset_magic(struct bch_fs *c)
|
|
{
|
|
return __le64_to_cpu(bch2_sb_magic(c) ^ JSET_MAGIC);
|
|
}
|
|
|
|
static inline __u64 bset_magic(struct bch_fs *c)
|
|
{
|
|
return __le64_to_cpu(bch2_sb_magic(c) ^ BSET_MAGIC);
|
|
}
|
|
|
|
int bch2_sb_to_fs(struct bch_fs *, struct bch_sb *);
|
|
int bch2_sb_from_fs(struct bch_fs *, struct bch_dev *);
|
|
|
|
void bch2_free_super(struct bch_sb_handle *);
|
|
int bch2_sb_realloc(struct bch_sb_handle *, unsigned);
|
|
|
|
const char *bch2_sb_validate(struct bch_sb_handle *);
|
|
|
|
int bch2_read_super(const char *, struct bch_opts *, struct bch_sb_handle *);
|
|
void bch2_write_super(struct bch_fs *);
|
|
|
|
/* BCH_SB_FIELD_journal: */
|
|
|
|
static inline unsigned bch2_nr_journal_buckets(struct bch_sb_field_journal *j)
|
|
{
|
|
return j
|
|
? (__le64 *) vstruct_end(&j->field) - j->buckets
|
|
: 0;
|
|
}
|
|
|
|
/* BCH_SB_FIELD_members: */
|
|
|
|
static inline bool bch2_member_exists(struct bch_member *m)
|
|
{
|
|
return !bch2_is_zero(&m->uuid, sizeof(m->uuid));
|
|
}
|
|
|
|
static inline bool bch2_dev_exists(struct bch_sb *sb,
|
|
struct bch_sb_field_members *mi,
|
|
unsigned dev)
|
|
{
|
|
return dev < sb->nr_devices &&
|
|
bch2_member_exists(&mi->members[dev]);
|
|
}
|
|
|
|
static inline struct bch_member_cpu bch2_mi_to_cpu(struct bch_member *mi)
|
|
{
|
|
return (struct bch_member_cpu) {
|
|
.nbuckets = le64_to_cpu(mi->nbuckets),
|
|
.first_bucket = le16_to_cpu(mi->first_bucket),
|
|
.bucket_size = le16_to_cpu(mi->bucket_size),
|
|
.group = BCH_MEMBER_GROUP(mi),
|
|
.state = BCH_MEMBER_STATE(mi),
|
|
.replacement = BCH_MEMBER_REPLACEMENT(mi),
|
|
.discard = BCH_MEMBER_DISCARD(mi),
|
|
.data_allowed = BCH_MEMBER_DATA_ALLOWED(mi),
|
|
.durability = BCH_MEMBER_DURABILITY(mi)
|
|
? BCH_MEMBER_DURABILITY(mi) - 1
|
|
: 1,
|
|
.valid = bch2_member_exists(mi),
|
|
};
|
|
}
|
|
|
|
/* BCH_SB_FIELD_clean: */
|
|
|
|
struct jset_entry *
|
|
bch2_journal_super_entries_add_common(struct bch_fs *,
|
|
struct jset_entry *, u64);
|
|
|
|
void bch2_sb_clean_renumber(struct bch_sb_field_clean *, int);
|
|
|
|
void bch2_fs_mark_clean(struct bch_fs *, bool);
|
|
|
|
void bch2_sb_field_to_text(struct printbuf *, struct bch_sb *,
|
|
struct bch_sb_field *);
|
|
|
|
#endif /* _BCACHEFS_SUPER_IO_H */
|