Commit 260a67a9 authored by Jens Axboe's avatar Jens Axboe
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block: revert bad fix for memory hotplug causing bounces 



Revert "block: set the bounce_pfn to the actual DMA limit rather than to max memory"

This reverts commit c49825fa.

Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
parent e4ecda1b

block/blk-settings.c

+3 −1
Original line number Diff line number Diff line
@@ -214,14 +214,16 @@ void blk_queue_bounce_limit(struct request_queue *q, u64 dma_mask) 
	 */

	if (b_pfn < (min_t(u64, 0xffffffffUL, BLK_BOUNCE_HIGH) >> PAGE_SHIFT))

		dma = 1;

	q->limits.bounce_pfn = max_low_pfn;

#else

	if (b_pfn < blk_max_low_pfn)

		dma = 1;

#endif

	q->limits.bounce_pfn = b_pfn;

#endif

	if (dma) {

		init_emergency_isa_pool();

		q->bounce_gfp = GFP_NOIO | GFP_DMA;

		q->limits.bounce_pfn = b_pfn;

	}

}

EXPORT_SYMBOL(blk_queue_bounce_limit);