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authorNicholas Bellinger <nab@linux-iscsi.org>2016-01-07 22:15:06 -0800
committerNicholas Bellinger <nab@linux-iscsi.org>2016-01-20 01:34:14 -0800
commitd36ad77f702356afb1009d2987b0ab55da4c7d57 (patch)
tree54b5d1a821c215439380dbb09a581a5d67c93706 /crypto/api.c
parent26a99c19f810b2593410899a5b304b21b47428a6 (diff)
downloadlinux-d36ad77f702356afb1009d2987b0ab55da4c7d57.tar.bz2
target: Convert ACL change queue_depth se_session reference usage
This patch converts core_tpg_set_initiator_node_queue_depth() to use struct se_node_acl->acl_sess_list when performing explicit se_tpg_tfo->shutdown_session() for active sessions, in order for new se_node_acl->queue_depth to take effect. This follows how core_tpg_del_initiator_node_acl() currently works when invoking se_tpg_tfo->shutdown-session(), and ahead of the next patch to take se_node_acl->acl_kref during lookup, the extra get_initiator_node_acl() can go away. In order to achieve this, go ahead and change target_get_session() to use kref_get_unless_zero() and propigate up the return value to know when a session is already being released. This is because se_node_acl->acl_group is already protecting se_node_acl->acl_group reference via configfs, and shutdown within core_tpg_del_initiator_node_acl() won't occur until sys_write() to core_tpg_set_initiator_node_queue_depth() attribute returns back to user-space. Also, drop the left-over iscsi-target hack, and obtain se_portal_group->session_lock in lio_tpg_shutdown_session() internally. Remove iscsi-target wrapper and unused se_tpg + force parameters and associated code. Reported-by: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Andy Grover <agrover@redhat.com> Cc: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'crypto/api.c')
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