diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-02-26 22:22:10 -0800 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-03-10 14:41:53 -0800 |
| commit | 41ac82b668177876d5965d5f60956fb0fbcdb514 (patch) | |
| tree | 229c299330fa9c3cb4cb5a1903e0559e3e7a5d5b /drivers/target | |
| parent | 140854cb72525246745b67300d35101ad2875a39 (diff) | |
target: Add se_sess->sess_kref + get/put helpers
This patch adds basic se_session->sess_kref and get/put helpers for fabric
session reference counting. It sets the initial kref in transport_init_session()
and adds a target_release_session() callback to invoke TFO->close_session()
for final session shutdown.
Cc: Roland Dreier <roland@purestorage.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Joern Engel <joern@logfs.org>
Cc: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_transport.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index d931edf11c2..7badc87e4bb 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -246,6 +246,7 @@ struct se_session *transport_init_session(void) INIT_LIST_HEAD(&se_sess->sess_cmd_list); INIT_LIST_HEAD(&se_sess->sess_wait_list); spin_lock_init(&se_sess->sess_cmd_lock); + kref_init(&se_sess->sess_kref); return se_sess; } @@ -313,6 +314,27 @@ void transport_register_session( } EXPORT_SYMBOL(transport_register_session); +static void target_release_session(struct kref *kref) +{ + struct se_session *se_sess = container_of(kref, + struct se_session, sess_kref); + struct se_portal_group *se_tpg = se_sess->se_tpg; + + se_tpg->se_tpg_tfo->close_session(se_sess); +} + +void target_get_session(struct se_session *se_sess) +{ + kref_get(&se_sess->sess_kref); +} +EXPORT_SYMBOL(target_get_session); + +int target_put_session(struct se_session *se_sess) +{ + return kref_put(&se_sess->sess_kref, target_release_session); +} +EXPORT_SYMBOL(target_put_session); + void transport_deregister_session_configfs(struct se_session *se_sess) { struct se_node_acl *se_nacl; |