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-rw-r--r--fs/nilfs2/bmap.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h
index a20569b1992..5f3339e3eac 100644
--- a/fs/nilfs2/bmap.h
+++ b/fs/nilfs2/bmap.h
@@ -135,6 +135,12 @@ struct nilfs_bmap {
/* state */
#define NILFS_BMAP_DIRTY 0x00000001
+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 *);
@@ -156,6 +162,8 @@ 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)