From bb7d1283e6280acdfe0faf10e8b6ebd1f5970fed Mon Sep 17 00:00:00 2001 From: John Garry Date: Thu, 14 Jul 2022 19:15:26 +0800 Subject: scsi: core: cap shost max_sectors according to DMA limits only once The shost->max_sectors is repeatedly capped according to the host DMA mapping limit for each sdev in __scsi_init_queue(). This is unnecessary, so set only once when adding the host. Signed-off-by: John Garry Reviewed-by: Damien Le Moal Acked-by: Martin K. Petersen Signed-off-by: Christoph Hellwig --- drivers/scsi/hosts.c | 5 +++++ drivers/scsi/scsi_lib.c | 4 ---- 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 8352f90d997d..d04bd2c7c9f1 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -236,6 +236,11 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev, shost->dma_dev = dma_dev; + if (dma_dev->dma_mask) { + shost->max_sectors = min_t(unsigned int, shost->max_sectors, + dma_max_mapping_size(dma_dev) >> SECTOR_SHIFT); + } + error = scsi_mq_setup_tags(shost); if (error) goto fail; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 6ffc9e4258a8..6ce8acea322a 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1884,10 +1884,6 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q) blk_queue_max_integrity_segments(q, shost->sg_prot_tablesize); } - if (dev->dma_mask) { - shost->max_sectors = min_t(unsigned int, shost->max_sectors, - dma_max_mapping_size(dev) >> SECTOR_SHIFT); - } blk_queue_max_hw_sectors(q, shost->max_sectors); blk_queue_segment_boundary(q, shost->dma_boundary); dma_set_seg_boundary(dev, shost->dma_boundary); -- cgit v1.2.3