NVMe: switch to using blk_queue_write_cache()

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 6631f38..4eb5759 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -999,6 +999,8 @@ EXPORT_SYMBOL_GPL(nvme_shutdown_ctrl);
 static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
                struct request_queue *q)
 {
 static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
                struct request_queue *q)
 {

+       bool vwc = false;
+

        if (ctrl->max_hw_sectors) {
                u32 max_segments =
                        (ctrl->max_hw_sectors / (ctrl->page_size >> 9)) + 1;
        if (ctrl->max_hw_sectors) {
                u32 max_segments =
                        (ctrl->max_hw_sectors / (ctrl->page_size >> 9)) + 1;


@@ -1008,9 +1010,10 @@ static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
        }
        if (ctrl->stripe_size)
                blk_queue_chunk_sectors(q, ctrl->stripe_size >> 9);
        }
        if (ctrl->stripe_size)
                blk_queue_chunk_sectors(q, ctrl->stripe_size >> 9);

-       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_virt_boundary(q, ctrl->page_size - 1);

+       if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
+               vwc = true;
+       blk_queue_write_cache(q, vwc, vwc);

 }
 
 /*
 }
 
 /*