From 260a67a9e534f0c7d49ddd6451833d54ba39ac81 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 1 Oct 2010 14:42:43 +0200 Subject: [PATCH] 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 c49825facfd4969585224a896a5e717f88450cad. Signed-off-by: Jens Axboe --- block/blk-settings.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/block/blk-settings.c b/block/blk-settings.c index f47af5031eaa..f8f2ddf20613 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -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); -- 2.30.2