dcssblk: use bvec_virt

Use bvec_virt instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210804095634.460779-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 29180bd..5be3d1c 100644 (file)
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -892,8 +892,7 @@ dcssblk_submit_bio(struct bio *bio)
 
        index = (bio->bi_iter.bi_sector >> 3);
        bio_for_each_segment(bvec, bio, iter) {
-               page_addr = (unsigned long)
-                       page_address(bvec.bv_page) + bvec.bv_offset;
+               page_addr = (unsigned long)bvec_virt(&bvec);
                source_addr = dev_info->start + (index<<12) + bytes_done;
                if (unlikely((page_addr & 4095) != 0) || (bvec.bv_len & 4095) != 0)
                        // More paranoia.