Commit 260a67a9 authored by Jens Axboe's avatar Jens Axboe

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
......@@ -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);
......
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