raid1: use bio_copy_data()

This doesn't really delete any code _yet_, but once immutable bvecs are
done we can just delete the rest of the code in that loop.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: NeilBrown <neilb@suse.de>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index b36231866336..0a3988a25aab 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1906,10 +1906,9 @@ static int process_checks(struct r1bio *r1_bio)
                         else
                                 bi->bv_len = size;
                         size -= PAGE_SIZE;
-                        memcpy(page_address(bi->bv_page),
-                               page_address(pbio->bi_io_vec[j].bv_page),
-                               PAGE_SIZE);
                 }
+
+                bio_copy_data(sbio, pbio);
         }
         return 0;
 }