diff options
| -rw-r--r-- | drivers/scsi/hosts.c | 1 | ||||
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 2 | ||||
| -rw-r--r-- | include/scsi/scsi_host.h | 9 |
3 files changed, 11 insertions, 1 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 37d1c5565d90..2f162603876f 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -421,6 +421,7 @@ 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->no_write_same = sht->no_write_same; + shost->host_tagset = sht->host_tagset; if (shost_eh_deadline == -1 || !sht->eh_host_reset_handler) shost->eh_deadline = -1; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 7affaaf8b98e..a89478a0c588 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1891,6 +1891,8 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost) tag_set->flags |= BLK_ALLOC_POLICY_TO_MQ_FLAG(shost->hostt->tag_alloc_policy); tag_set->driver_data = shost; + if (shost->host_tagset) + tag_set->flags |= BLK_MQ_F_TAG_HCTX_SHARED; return blk_mq_alloc_tag_set(tag_set); } diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 46ef8cccc982..701f178b20ae 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -436,6 +436,9 @@ struct scsi_host_template { /* True if the controller does not support WRITE SAME */ unsigned no_write_same:1; + /* True if the host uses host-wide tagspace */ + unsigned host_tagset:1; + /* * Countdown for host blocking with no commands outstanding. */ @@ -603,7 +606,8 @@ struct Scsi_Host { * * Note: it is assumed that each hardware queue has a queue depth of * can_queue. In other words, the total queue depth per host - * is nr_hw_queues * can_queue. + * is nr_hw_queues * can_queue. However, for when host_tagset is set, + * the total queue depth is can_queue. */ unsigned nr_hw_queues; unsigned active_mode:2; @@ -634,6 +638,9 @@ struct Scsi_Host { /* The controller does not support WRITE SAME */ unsigned no_write_same:1; + /* True if the host uses host-wide tagspace */ + unsigned host_tagset:1; + /* Host responded with short (<36 bytes) INQUIRY result */ unsigned short_inquiry:1; |