virtio_blk: use bvec_virt

Use bvec_virt instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Link: https://lore.kernel.org/r/20210804095634.460779-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 4b49df2dfd23f5af748286248daeb121722230f5..767b4f72a54d653ddaa62dda6fa069d1db506b77 100644 (file)
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -166,11 +166,8 @@ static inline void virtblk_request_done(struct request *req)
 {
        struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
 
-       if (req->rq_flags & RQF_SPECIAL_PAYLOAD) {
-               kfree(page_address(req->special_vec.bv_page) +
-                     req->special_vec.bv_offset);
-       }
-
+       if (req->rq_flags & RQF_SPECIAL_PAYLOAD)
+               kfree(bvec_virt(&req->special_vec));
        blk_mq_end_request(req, virtblk_result(vbr));
 }