37 	errcode_t (*put)(ext2_brel brel, blk64_t old,
43 	errcode_t (*get)(ext2_brel brel, blk64_t old,
49 	errcode_t (*start_iter)(ext2_brel brel);
55 	errcode_t (*next)(ext2_brel brel, blk64_t *old,
62 	errcode_t (*move)(ext2_brel brel, blk64_t old, blk_t new);
67 	errcode_t (*delete)(ext2_brel brel, blk64_t old);
73 	errcode_t (*free)(ext2_brel brel);
77 				    ext2_brel *brel);
79 #define ext2fs_brel_put(brel, old, ent) ((brel)->put((brel), old, ent))  argument
80 #define ext2fs_brel_get(brel, old, ent) ((brel)->get((brel), old, ent))  argument
81 #define ext2fs_brel_start_iter(brel) ((brel)->start_iter((brel)))  argument
82 #define ext2fs_brel_next(brel, old, ent) ((brel)->next((brel), old, ent))  argument
83 #define ext2fs_brel_move(brel, old, new) ((brel)->move((brel), old, new))  argument
84 #define ext2fs_brel_delete(brel, old) ((brel)->delete((brel), old))  argument
85 #define ext2fs_brel_free(brel) ((brel)->free((brel)))  argument