summaryrefslogtreecommitdiff
path: root/drivers/target
diff options
context:
space:
mode:
authorHannes Reinecke <hare@suse.de>2015-06-11 11:01:24 +0300
committerNicholas Bellinger <nab@linux-iscsi.org>2015-06-16 10:38:27 +0300
commitee8c07d0c32622b6fa44108b0141434575e43188 (patch)
tree444e57178c7910a7f43c5808a5fcd6617d4353e8 /drivers/target
parent0fb1f14e88f6f814fc578d0b8b3de666d1c9327e (diff)
downloadlinux-ee8c07d0c32622b6fa44108b0141434575e43188.tar.xz
target_core_alua: Correct UA handling when switching states
When switching target port group ALUA states we need to send one UA when setting the ALUA state to 'transitioning', and another one once the final state has been set. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_alua.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index 2318e6e5ce52..228a3c7925e5 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -941,16 +941,11 @@ static int core_alua_update_tpg_primary_metadata(
return rc;
}
-static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
+static void core_alua_queue_state_change_ua(struct t10_alua_tg_pt_gp *tg_pt_gp)
{
- struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(work,
- struct t10_alua_tg_pt_gp, tg_pt_gp_transition_work.work);
- struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
struct se_dev_entry *se_deve;
struct se_lun *lun;
struct se_lun_acl *lacl;
- bool explicit = (tg_pt_gp->tg_pt_gp_alua_access_status ==
- ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG);
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list,
@@ -1002,6 +997,16 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
percpu_ref_put(&lun->lun_ref);
}
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
+}
+
+static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
+{
+ struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(work,
+ struct t10_alua_tg_pt_gp, tg_pt_gp_transition_work.work);
+ struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
+ bool explicit = (tg_pt_gp->tg_pt_gp_alua_access_status ==
+ ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG);
+
/*
* Update the ALUA metadata buf that has been allocated in
* core_alua_do_port_transition(), this metadata will be written
@@ -1031,6 +1036,9 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work)
tg_pt_gp->tg_pt_gp_id,
core_alua_dump_state(tg_pt_gp->tg_pt_gp_alua_previous_state),
core_alua_dump_state(tg_pt_gp->tg_pt_gp_alua_pending_state));
+
+ core_alua_queue_state_change_ua(tg_pt_gp);
+
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
@@ -1083,6 +1091,8 @@ static int core_alua_do_transition_tg_pt(
ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG :
ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA;
+ core_alua_queue_state_change_ua(tg_pt_gp);
+
/*
* Check for the optional ALUA primary state transition delay
*/