From ee1b6f7aff94019c09e73837054979063f722046 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Thu, 15 Jan 2015 17:32:25 -0800 Subject: block: support different tag allocation policy The libata tag allocation is using a round-robin policy. Next patch will make libata use block generic tag allocation, so let's add a policy to tag allocation. Currently two policies: FIFO (default) and round-robin. Cc: Jens Axboe Cc: Tejun Heo Cc: Christoph Hellwig Signed-off-by: Shaohua Li Signed-off-by: Jens Axboe --- drivers/scsi/scsi_scan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/scsi_scan.c') diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 983aed10ff2f..921a8c897eb2 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -290,7 +290,8 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, if (!shost_use_blk_mq(sdev->host) && (shost->bqt || shost->hostt->use_blk_tags)) { blk_queue_init_tags(sdev->request_queue, - sdev->host->cmd_per_lun, shost->bqt); + sdev->host->cmd_per_lun, shost->bqt, + shost->hostt->tag_alloc_policy); } scsi_change_queue_depth(sdev, sdev->host->cmd_per_lun); -- cgit