On 2020-04-13 22:15, Mike Christie wrote: > struct se_session *target_setup_session(struct se_portal_group *, > unsigned int, unsigned int, enum target_prot_op prot_op, > - const char *, void *, > - int (*callback)(struct se_portal_group *, > - struct se_session *, void *)); > + const char *, struct attribute_group *, void *, > + int (*setup_cb)(struct se_portal_group *, > + struct se_session *, void *), > + void (*free_cb)(struct se_session *)); The argument list of target_setup_session() is getting really long. How about moving the attribute_group, setup_cb and free_cb arguments into struct target_core_fabric_ops? Would that make it easier to extend session sysfs attribute support in the future? Thanks, Bart.