-#ifndef _BCACHE_SUPER_IO_H
-#define _BCACHE_SUPER_IO_H
+/* 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 "sb-members.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 bcache_superblock *,
- enum bch_sb_field_type, unsigned);
-struct bch_sb_field *bch2_fs_sb_field_resize(struct bch_fs *,
- enum bch_sb_field_type, unsigned);
+static inline bool bch2_version_compatible(u16 version)
+{
+ return BCH_VERSION_MAJOR(version) <= BCH_VERSION_MAJOR(bcachefs_metadata_version_current) &&
+ version >= bcachefs_metadata_version_min;
+}
+
+void bch2_version_to_text(struct printbuf *, unsigned);
+unsigned bch2_latest_compatible_version(unsigned);
+
+static inline size_t bch2_sb_field_bytes(struct bch_sb_field *f)
+{
+ return le32_to_cpu(f->u64s) * sizeof(u64);
+}
#define field_to_type(_f, _name) \
container_of_or_null(_f, struct bch_sb_field_##_name, field)
-#define BCH_SB_FIELD_TYPE(_name) \
-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 bcache_superblock *sb, unsigned u64s) \
-{ \
- return field_to_type(bch2_sb_field_resize(sb, \
- BCH_SB_FIELD_##_name, u64s), _name); \
-} \
- \
-static inline struct bch_sb_field_##_name * \
-bch2_fs_sb_resize_##_name(struct bch_fs *c, unsigned u64s) \
-{ \
- return field_to_type(bch2_fs_sb_field_resize(c, \
- BCH_SB_FIELD_##_name, u64s), _name); \
-}
+struct bch_sb_field *bch2_sb_field_get_id(struct bch_sb *, enum bch_sb_field_type);
+#define bch2_sb_field_get(_sb, _name) \
+ field_to_type(bch2_sb_field_get_id(_sb, BCH_SB_FIELD_##_name), _name)
-BCH_SB_FIELD_TYPE(journal);
-BCH_SB_FIELD_TYPE(members);
-BCH_SB_FIELD_TYPE(crypt);
+struct bch_sb_field *bch2_sb_field_resize_id(struct bch_sb_handle *,
+ enum bch_sb_field_type, unsigned);
+#define bch2_sb_field_resize(_sb, _name, _u64s) \
+ field_to_type(bch2_sb_field_resize_id(_sb, BCH_SB_FIELD_##_name, _u64s), _name)
-static inline bool bch2_sb_test_feature(struct bch_sb *sb,
- enum bch_sb_features f)
-{
- unsigned w = f / 64;
- unsigned b = f % 64;
+struct bch_sb_field *bch2_sb_field_get_minsize_id(struct bch_sb_handle *,
+ enum bch_sb_field_type, unsigned);
+#define bch2_sb_field_get_minsize(_sb, _name, _u64s) \
+ field_to_type(bch2_sb_field_get_minsize_id(_sb, BCH_SB_FIELD_##_name, _u64s), _name)
- return le64_to_cpu(sb->features[w]) & (1ULL << b);
-}
+#define bch2_sb_field_nr_entries(_f) \
+ (_f ? ((bch2_sb_field_bytes(&_f->field) - sizeof(*_f)) / \
+ sizeof(_f->entries[0])) \
+ : 0)
-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;
+void bch2_sb_field_delete(struct bch_sb_handle *, enum bch_sb_field_type);
- le64_add_cpu(&sb->features[w], 1ULL << b);
- }
-}
+extern const char * const bch2_sb_fields[];
+
+struct bch_sb_field_ops {
+ int (*validate)(struct bch_sb *, struct bch_sb_field *, struct printbuf *);
+ void (*to_text)(struct printbuf *, struct bch_sb *, struct bch_sb_field *);
+};
static inline __le64 bch2_sb_magic(struct bch_fs *c)
{
__le64 ret;
+
memcpy(&ret, &c->sb.uuid, sizeof(ret));
return ret;
}
return __le64_to_cpu(bch2_sb_magic(c) ^ JSET_MAGIC);
}
-static inline __u64 pset_magic(struct bch_fs *c)
-{
- return __le64_to_cpu(bch2_sb_magic(c) ^ PSET_MAGIC);
-}
-
static inline __u64 bset_magic(struct bch_fs *c)
{
return __le64_to_cpu(bch2_sb_magic(c) ^ BSET_MAGIC);
}
-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),
- .state = BCH_MEMBER_STATE(mi),
- .tier = BCH_MEMBER_TIER(mi),
- .has_metadata = BCH_MEMBER_HAS_METADATA(mi),
- .has_data = BCH_MEMBER_HAS_DATA(mi),
- .replacement = BCH_MEMBER_REPLACEMENT(mi),
- .discard = BCH_MEMBER_DISCARD(mi),
- .valid = !bch2_is_zero(mi->uuid.b, sizeof(uuid_le)),
- };
-}
-
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 bcache_superblock *);
-int bch2_super_realloc(struct bcache_superblock *, unsigned);
+void bch2_free_super(struct bch_sb_handle *);
+int bch2_sb_realloc(struct bch_sb_handle *, unsigned);
-const char *bch2_validate_journal_layout(struct bch_sb *,
- struct bch_member_cpu);
-const char *bch2_validate_cache_super(struct bcache_superblock *);
+int bch2_read_super(const char *, struct bch_opts *, struct bch_sb_handle *);
+int bch2_read_super_silent(const char *, struct bch_opts *, struct bch_sb_handle *);
+int bch2_write_super(struct bch_fs *);
+void __bch2_check_set_feature(struct bch_fs *, unsigned);
-const char *bch2_read_super(struct bcache_superblock *,
- struct bch_opts, const char *);
-void bch2_write_super(struct bch_fs *);
-
-void bch2_check_mark_super_slowpath(struct bch_fs *,
- const struct bkey_i *, bool);
-
-static inline bool bch2_check_super_marked(struct bch_fs *c,
- const struct bkey_i *k, bool meta)
+static inline void bch2_check_set_feature(struct bch_fs *c, unsigned feat)
{
- struct bkey_s_c_extent e = bkey_i_to_s_c_extent(k);
- const struct bch_extent_ptr *ptr;
- unsigned nr_replicas = 0;
- bool ret = true;
-
- extent_for_each_ptr(e, ptr) {
- struct bch_dev *ca = c->devs[ptr->dev];
-
- if (ptr->cached)
- continue;
-
- if (!(meta
- ? ca->mi.has_metadata
- : ca->mi.has_data)) {
- ret = false;
- break;
- }
-
- nr_replicas++;
- }
-
- if (nr_replicas <
- (meta ? c->sb.meta_replicas_have : c->sb.data_replicas_have))
- ret = false;
-
- return ret;
+ if (!(c->sb.features & (1ULL << feat)))
+ __bch2_check_set_feature(c, feat);
}
-static inline void bch2_check_mark_super(struct bch_fs *c,
- const struct bkey_i *k, bool meta)
-{
- if (bch2_check_super_marked(c, k, meta))
- return;
+bool bch2_check_version_downgrade(struct bch_fs *);
+void bch2_sb_upgrade(struct bch_fs *, unsigned);
- bch2_check_mark_super_slowpath(c, k, meta);
-}
+void __bch2_sb_field_to_text(struct printbuf *, struct bch_sb *,
+ struct bch_sb_field *);
+void bch2_sb_field_to_text(struct printbuf *, struct bch_sb *,
+ struct bch_sb_field *);
+void bch2_sb_layout_to_text(struct printbuf *, struct bch_sb_layout *);
+void bch2_sb_to_text(struct printbuf *, struct bch_sb *, bool, unsigned);
-#endif /* _BCACHE_SUPER_IO_H */
+#endif /* _BCACHEFS_SUPER_IO_H */