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iommu sg merging: call blk_queue_segment_boundary in __scsi_alloc_queue
request_queue and device struct must have the same value of a segment size limit. This patch adds blk_queue_segment_boundary in __scsi_alloc_queue so LLDs don't need to call both blk_queue_segment_boundary and set_dma_max_seg_size. A LLD can change the default value (64KB) can call device_dma_parameters accessors like pci_set_dma_max_seg_size when allocating scsi_host. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1569,6 +1569,7 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost,
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request_fn_proc *request_fn)
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{
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struct request_queue *q;
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struct device *dev = shost->shost_gendev.parent;
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q = blk_init_queue(request_fn, NULL);
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if (!q)
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@ -1584,6 +1585,8 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost,
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blk_queue_bounce_limit(q, scsi_calculate_bounce_limit(shost));
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blk_queue_segment_boundary(q, shost->dma_boundary);
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blk_queue_max_segment_size(q, dma_get_max_seg_size(dev));
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if (!shost->use_clustering)
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clear_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
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