[dm-devel] [PATCH 01/10] pktcdvd: remove the call to blk_queue_bounce

Christoph Hellwig hch at lst.de
Mon Jun 19 15:00:22 UTC 2017


On Mon, Jun 19, 2017 at 10:34:36PM +0800, Ming Lei wrote:
> blk_queue_make_request() sets bounce for any highmem page for long time,
> and in theory this patch might cause regression on 32bit arch, when
> the controller can't handle higmem page really(especially in case of PAE), so
> we may need to be careful about this change, especially on some old hardware.

Which controller?




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