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@@ -638,7 +638,7 @@ void blk_queue_bounce_limit(request_queue_t *q, u64 dma_addr)
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/* Assume anything <= 4GB can be handled by IOMMU.
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Actually some IOMMUs can handle everything, but I don't
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know of a way to test this here. */
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- if (bounce_pfn < (0xffffffff>>PAGE_SHIFT))
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+ if (bounce_pfn < (min_t(u64,0xffffffff,BLK_BOUNCE_HIGH) >> PAGE_SHIFT))
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dma = 1;
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q->bounce_pfn = max_low_pfn;
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#else
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