diff options
Diffstat (limited to 'fs/nilfs2/bmap.h')
| -rw-r--r-- | fs/nilfs2/bmap.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h index a20569b1992..b89e68076ad 100644 --- a/fs/nilfs2/bmap.h +++ b/fs/nilfs2/bmap.h @@ -135,6 +135,19 @@ struct nilfs_bmap { /* state */ #define NILFS_BMAP_DIRTY 0x00000001 +/** + * struct nilfs_bmap_store - shadow copy of bmap state + * @data: cached raw block mapping of on-disk inode + * @last_allocated_key: cached value of last allocated key for data block + * @last_allocated_ptr: cached value of last allocated ptr for data block + * @state: cached value of state field of bmap structure + */ +struct nilfs_bmap_store { + __le64 data[NILFS_BMAP_SIZE / sizeof(__le64)]; + __u64 last_allocated_key; + __u64 last_allocated_ptr; + int state; +}; int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *); int nilfs_bmap_read(struct nilfs_bmap *, struct nilfs_inode *); @@ -153,9 +166,9 @@ int nilfs_bmap_lookup_at_level(struct nilfs_bmap *, __u64, int, __u64 *); int nilfs_bmap_mark(struct nilfs_bmap *, __u64, int); void nilfs_bmap_init_gc(struct nilfs_bmap *); -void nilfs_bmap_init_gcdat(struct nilfs_bmap *, struct nilfs_bmap *); -void nilfs_bmap_commit_gcdat(struct nilfs_bmap *, struct nilfs_bmap *); +void nilfs_bmap_save(const struct nilfs_bmap *, struct nilfs_bmap_store *); +void nilfs_bmap_restore(struct nilfs_bmap *, const struct nilfs_bmap_store *); static inline int nilfs_bmap_lookup(struct nilfs_bmap *bmap, __u64 key, __u64 *ptr) @@ -234,9 +247,6 @@ __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *, __u64 nilfs_bmap_find_target_seq(const struct nilfs_bmap *, __u64); __u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *); -void nilfs_bmap_add_blocks(const struct nilfs_bmap *, int); -void nilfs_bmap_sub_blocks(const struct nilfs_bmap *, int); - /* Assume that bmap semaphore is locked. */ static inline int nilfs_bmap_dirty(const struct nilfs_bmap *bmap) |