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authorJoern Engel <joern@logfs.org>2012-05-18 13:58:23 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2012-06-12 19:37:47 -0700
commitaaf68b753313f1e67fd2e8996e32ab2813f441fa (patch)
tree6cf09eb22c16e668f976a2a885271395d6b1923a /drivers
parent4149268e7816d719b0fde8e89aaa6db8c168fc43 (diff)
tcm_qla2xxx: Convert to TFO->put_session() usage
This patch converts tcm_qla2xxx code to use an internal kref_put() for se_session->sess_kref in order to ensure that qla_hw_data->hardware_lock can be held while calling qlt_unreg_sess() for the final put. Signed-off-by: Joern Engel <joern@logfs.org> Cc: Roland Dreier <roland@purestorage.com> Cc: Arun Easi <arun.easi@qlogic.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 436598f5740..3cee5b67d65 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -844,9 +844,28 @@ static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
se_nacl, nacl->nport_wwnn, nacl->nport_id);
}
+static void tcm_qla2xxx_release_session(struct kref *kref)
+{
+ struct se_session *se_sess = container_of(kref,
+ struct se_session, sess_kref);
+
+ qlt_unreg_sess(se_sess->fabric_sess_ptr);
+}
+
+static void tcm_qla2xxx_put_session(struct se_session *se_sess)
+{
+ struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+ struct qla_hw_data *ha = sess->vha->hw;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
{
- target_put_session(sess->se_sess);
+ tcm_qla2xxx_put_session(sess->se_sess);
}
static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
@@ -1731,6 +1750,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = {
.new_cmd_map = NULL,
.check_stop_free = tcm_qla2xxx_check_stop_free,
.release_cmd = tcm_qla2xxx_release_cmd,
+ .put_session = tcm_qla2xxx_put_session,
.shutdown_session = tcm_qla2xxx_shutdown_session,
.close_session = tcm_qla2xxx_close_session,
.sess_get_index = tcm_qla2xxx_sess_get_index,
@@ -1779,6 +1799,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
.tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
.tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
.release_cmd = tcm_qla2xxx_release_cmd,
+ .put_session = tcm_qla2xxx_put_session,
.shutdown_session = tcm_qla2xxx_shutdown_session,
.close_session = tcm_qla2xxx_close_session,
.sess_get_index = tcm_qla2xxx_sess_get_index,