[BLOCK] update SCSI to use new blk_ordered for barriers

All ordered request related stuff delegated to HLD.  Midlayer
now doens't deal with ordered setting or prepare_flush
callback.  sd.c updated to deal with blk_queue_ordered
setting.  Currently, ordered tag isn't used as SCSI midlayer
cannot guarantee request ordering.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>

1 files changed, 0 insertions, 9 deletions

diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 5b9c2c5a7f0e..66783c860a19 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -347,17 +347,8 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
         shost->cmd_per_lun = sht->cmd_per_lun;
         shost->unchecked_isa_dma = sht->unchecked_isa_dma;
         shost->use_clustering = sht->use_clustering;
-        shost->ordered_flush = sht->ordered_flush;
         shost->ordered_tag = sht->ordered_tag;
 
-        /*
-         * hosts/devices that do queueing must support ordered tags
-         */
-        if (shost->can_queue > 1 && shost->ordered_flush) {
-                printk(KERN_ERR "scsi: ordered flushes don't support queueing\n");
-                shost->ordered_flush = 0;
-        }
-
         if (sht->max_host_blocked)
                 shost->max_host_blocked = sht->max_host_blocked;
         else