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scsi_dh_alua: Add new blacklist flag 'BLIST_SYNC_ALUA'

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Add a new blacklist flag BLIST_SYNC_ALUA to instruct the
alua device handler to use synchronous command submission
for ALUA commands.

Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke
2016-02-19 09:17:12 +01:00
committed by Martin K. Petersen
parent 00642a1bff
commit 851cde9909
5 changed files with 9 additions and 0 deletions
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2
drivers/scsi/device_handler/scsi_dh_alua.c
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@@ -366,6 +366,8 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h,
/* port group has changed. Update to new port group */
rcu_assign_pointer(h->pg, pg);
}
if (sdev->synchronous_alua)
pg->flags |= ALUA_SYNC_STPG;
alua_rtpg_queue(h->pg, sdev, NULL);
spin_unlock(&h->pg_lock);