Re: [PATCH 03/20] NVMe: switch to using blk_queue_write_cache()

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On 04/12/2016 03:21 PM, Christoph Hellwig wrote:
On Tue, Apr 12, 2016 at 12:35:58PM -0600, Jens Axboe wrote:
-	if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
-		blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
  	blk_queue_virt_boundary(q, ctrl->page_size - 1);
+	blk_queue_write_cache(q, ctrl->vwc & NVME_CTRL_VWC_PRESENT, true);

fua without the write cache doesn't make sense, I think this should
better use the NVME_CTRL_VWC_PRESENT check for both.

It doesn't really matter, but it doesn't really hurt either. But I'll just make them both dependent on VWC, that way it's clearer.

--
Jens Axboe

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