diff options
Diffstat (limited to 'fs/bcachefs/btree_io.h')
| -rw-r--r-- | fs/bcachefs/btree_io.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/fs/bcachefs/btree_io.h b/fs/bcachefs/btree_io.h index a02e261c2eb2..fa996fdc5474 100644 --- a/fs/bcachefs/btree_io.h +++ b/fs/bcachefs/btree_io.h @@ -2,6 +2,7 @@ #ifndef _BCACHEFS_BTREE_IO_H #define _BCACHEFS_BTREE_IO_H +#include "bkey_methods.h" #include "bset.h" #include "btree_locking.h" #include "extents.h" @@ -140,4 +141,50 @@ void bch2_btree_flush_all_writes(struct bch_fs *); void bch2_btree_verify_flushed(struct bch_fs *); ssize_t bch2_dirty_btree_nodes_print(struct bch_fs *, char *); +static inline void compat_bformat(unsigned level, enum btree_id btree_id, + unsigned version, unsigned big_endian, + int write, struct bkey_format *f) +{ + if (version < bcachefs_metadata_version_inode_btree_change && + btree_id == BTREE_ID_INODES) { + swap(f->bits_per_field[BKEY_FIELD_INODE], + f->bits_per_field[BKEY_FIELD_OFFSET]); + swap(f->field_offset[BKEY_FIELD_INODE], + f->field_offset[BKEY_FIELD_OFFSET]); + } +} + +static inline void compat_bpos(unsigned level, enum btree_id btree_id, + unsigned version, unsigned big_endian, + int write, struct bpos *p) +{ + if (big_endian != CPU_BIG_ENDIAN) + bch2_bpos_swab(p); + + if (version < bcachefs_metadata_version_inode_btree_change && + btree_id == BTREE_ID_INODES) + swap(p->inode, p->offset); +} + +static inline void compat_btree_node(unsigned level, enum btree_id btree_id, + unsigned version, unsigned big_endian, + int write, + struct btree_node *bn) +{ + if (version < bcachefs_metadata_version_inode_btree_change && + btree_node_type_is_extents(btree_id) && + bkey_cmp(bn->min_key, POS_MIN) && + write) + bn->min_key = bkey_predecessor(bn->min_key); + + compat_bpos(level, btree_id, version, big_endian, write, &bn->min_key); + compat_bpos(level, btree_id, version, big_endian, write, &bn->max_key); + + if (version < bcachefs_metadata_version_inode_btree_change && + btree_node_type_is_extents(btree_id) && + bkey_cmp(bn->min_key, POS_MIN) && + !write) + bn->min_key = bkey_successor(bn->min_key); +} + #endif /* _BCACHEFS_BTREE_IO_H */ |