[PATCH 15/15] nvme: use bvec_virt

[Keith Busch]

On Wed, Aug 04, 2021 at 11:56:34AM +0200, Christoph Hellwig wrote:
> Use bvec_virt instead of open coding it.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> ---
>  drivers/nvme/host/core.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dfd9dec0c1f6..02ce94b2906b 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -968,12 +968,11 @@ void nvme_cleanup_cmd(struct request *req)
>  {
>  	if (req->rq_flags & RQF_SPECIAL_PAYLOAD) {
>  		struct nvme_ctrl *ctrl = nvme_req(req)->ctrl;
> -		struct page *page = req->special_vec.bv_page;
>  
> -		if (page == ctrl->discard_page)
> +		if (req->special_vec.bv_page == ctrl->discard_page)
>  			clear_bit_unlock(0, &ctrl->discard_page_busy);
>  		else
> -			kfree(page_address(page) + req->special_vec.bv_offset);
> +			kfree(bvec_virt(&req->special_vec));
>  	}
>  }
>  EXPORT_SYMBOL_GPL(nvme_cleanup_cmd);

Looks good.

Reviewed-by: Keith Busch <kbusch at kernel.org>