If we only set the max_segment_size on the queue an IOMMU merge might create bigger segments again, so limit the IOMMU merges as well. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- drivers/block/mtip32xx/mtip32xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index bacfdac7161c..a14b09ab3a41 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3676,6 +3676,7 @@ static int mtip_block_initialize(struct driver_data *dd) blk_queue_physical_block_size(dd->queue, 4096); blk_queue_max_hw_sectors(dd->queue, 0xffff); blk_queue_max_segment_size(dd->queue, 0x400000); + dma_set_max_seg_size(&dd->pdev->dev, 0x400000); blk_queue_io_min(dd->queue, 4096); /* Set the capacity of the device in 512 byte sectors. */ -- 2.20.1
