On Tue, May 12, 2015 at 09:25:33AM +0000, Nicholas A. Bellinger wrote: > From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> > > This patch converts the fixed size se_portal_group->tpg_lun_list[] > to use modern RCU with hlist_head in order to support an arbitary > number of se_lun ports per target endpoint. > > It includes dropping core_tpg_alloc_lun() from core_dev_add_lun(), > and calling it directly from target_fabric_make_lun() to allocate > a new se_lun. > > Also add a new target_fabric_port_release() configfs item callback > to invoke call_rcu() to release memory during se_lun->lun_group > shutdown. > > Also now that se_node_acl->lun_entry_hlist is using RCU, convert > existing tpg_lun_lock to struct mutex so core_tpg_add_node_to_devs() > can perform RCU updater logic without releasing ->tpg_lun_mutex. FYI, you can also kill ->lun_status with this as only allocated se_lun structures will ever be on the list. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
