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revert commit a8e5a2d593 ("[SCSI] scsi_dh_alua: ALUA handler attach should succeed while TPG is transitioning") 

This reverts commit a8e5a2d593

Obsoleted by the next patch.

Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2016-02-19 09:17:07 +01:00 committed by Martin K. Petersen
parent a4253fde53
commit 28261402dd
1 changed files with 12 additions and 19 deletions
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31
drivers/scsi/device_handler/scsi_dh_alua.c
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@ -92,7 +92,7 @@ struct alua_dh_data {
#define ALUA_POLICY_SWITCH_CURRENT 0
#define ALUA_POLICY_SWITCH_ALL 1
static int alua_rtpg(struct scsi_device *, struct alua_port_group *, int);
static int alua_rtpg(struct scsi_device *, struct alua_port_group *);
static char print_alua_state(int);
static void release_port_group(struct kref *kref)
@ -326,7 +326,7 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h,
ALUA_DH_NAME, h->pg->device_id_str,
h->group_id, h->rel_port);
return alua_rtpg(sdev, h->pg, 0);
return alua_rtpg(sdev, h->pg);
}
static char print_alua_state(int state)
@ -409,13 +409,12 @@ static int alua_check_sense(struct scsi_device *sdev,
/*
* alua_rtpg - Evaluate REPORT TARGET GROUP STATES
* @sdev: the device to be evaluated.
* @wait_for_transition: if nonzero, wait ALUA_FAILOVER_TIMEOUT seconds for device to exit transitioning state
*
* Evaluate the Target Port Group State.
* Returns SCSI_DH_DEV_OFFLINED if the path is
* found to be unusable.
*/
static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg, int wait_for_transition)
static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg)
{
struct scsi_sense_hdr sense_hdr;
int len, k, off, valid_states = 0, bufflen = ALUA_RTPG_SIZE;
@ -506,8 +505,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg, int w
else
pg->transition_tmo = ALUA_FAILOVER_TIMEOUT;
if (wait_for_transition &&
(orig_transition_tmo != pg->transition_tmo)) {
if (orig_transition_tmo != pg->transition_tmo) {
sdev_printk(KERN_INFO, sdev,
"%s: transition timeout set to %d seconds\n",
ALUA_DH_NAME, pg->transition_tmo);
@ -545,19 +543,14 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg, int w
switch (pg->state) {
case TPGS_STATE_TRANSITIONING:
if (wait_for_transition) {
if (time_before(jiffies, expiry)) {
/* State transition, retry */
interval += 2000;
msleep(interval);
goto retry;
}
err = SCSI_DH_RETRY;
} else {
err = SCSI_DH_OK;
if (time_before(jiffies, expiry)) {
/* State transition, retry */
interval += 2000;
msleep(interval);
goto retry;
}
/* Transitioning time exceeded, set port to standby */
err = SCSI_DH_RETRY;
pg->state = TPGS_STATE_STANDBY;
break;
case TPGS_STATE_OFFLINE:
@ -713,14 +706,14 @@ static int alua_activate(struct scsi_device *sdev,
if (optimize_stpg)
h->pg->flags |= ALUA_OPTIMIZE_STPG;
err = alua_rtpg(sdev, h->pg, 1);
err = alua_rtpg(sdev, h->pg);
if (err != SCSI_DH_OK) {
kref_put(&h->pg->kref, release_port_group);
goto out;
}
err = alua_stpg(sdev, h->pg);
if (err == SCSI_DH_RETRY)
err = alua_rtpg(sdev, h->pg, 1);
err = alua_rtpg(sdev, h->pg);
kref_put(&h->pg->kref, release_port_group);
out:
if (fn)