scsi: allow LLDDs to expose the queue mapping to blk-mq
Just hand through the blk-mq map_queues method in the host template.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 2cca9cf..f23ec24 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1990,6 +1990,15 @@
kfree(cmd->sense_buffer);
}
+static int scsi_map_queues(struct blk_mq_tag_set *set)
+{
+ struct Scsi_Host *shost = container_of(set, struct Scsi_Host, tag_set);
+
+ if (shost->hostt->map_queues)
+ return shost->hostt->map_queues(shost);
+ return blk_mq_map_queues(set);
+}
+
static u64 scsi_calculate_bounce_limit(struct Scsi_Host *shost)
{
struct device *host_dev;
@@ -2082,6 +2091,7 @@
.timeout = scsi_timeout,
.init_request = scsi_init_request,
.exit_request = scsi_exit_request,
+ .map_queues = scsi_map_queues,
};
struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev)