u64 mod_len;
u64 orig_start;
u64 orig_block_len;
+ u64 ram_bytes;
u64 block_start;
u64 block_len;
u64 generation;
struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,
u64 start, u64 len);
int add_extent_mapping(struct extent_map_tree *tree,
- struct extent_map *em);
+ struct extent_map *em, int modified);
int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em);
struct extent_map *alloc_extent_map(void);