Nicholas Bellinger 4cc987eaff target: Drop lun_sep_lock for se_lun->lun_se_dev RCU usage ... With se_port and t10_alua_tg_pt_gp_member being absored into se_lun, there is no need for an extra lock to protect se_lun->lun_se_dev assignment. This patch also converts backend drivers to use call_rcu() release to allow any se_device readers to complete. The call_rcu() instead of kfree_rcu() is required here because se_device is embedded into the backend driver specific structure. Also, convert se_lun->lun_stats to use atomic_long_t within the target_complete_ok_work() completion callback, and add FIXME for transport_lookup_tmr_lun() with se_lun->lun_ref. Finally, update sbp_update_unit_directory() special case usage with proper rcu_dereference_raw() and configfs symlink comment. Reported-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Chris Boot <bootc@bootc.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>		2015-06-01 00:27:38 -07:00
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Kconfig	sbp-target: remove depends on CONFIG_EXPERIMENTAL	2012-11-07 20:12:09 -08:00
Makefile	sbp-target: Initial merge of firewire/ieee-1394 target mode support	2012-05-09 15:25:17 -07:00
sbp_target.c	target: Drop lun_sep_lock for se_lun->lun_se_dev RCU usage	2015-06-01 00:27:38 -07:00
sbp_target.h	target: Convert se_portal_group->tpg_lun_list[] to RCU hlist	2015-06-01 00:24:33 -07:00