__u32 enqflags, enum cl_lock_mode mode,
loff_t start, loff_t end);
void ccc_io_end(const struct lu_env *env, const struct cl_io_slice *ios);
+void ccc_io_advance(const struct lu_env *env, const struct cl_io_slice *ios,
+ size_t nob);
+void ccc_io_update_iov(const struct lu_env *env, struct ccc_io *cio,
+ struct cl_io *io);
int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
struct cl_io *io, loff_t start, size_t count, int vfslock,
int *exceed);