md/raid5: remove unusual use of bio_iovec_idx()

In the bio_for_each_segment loop, bvl always points current
bio_vec, so the same as bio_iovec_idx(, i). Let's get rid of
it.

Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index b7dcc67..b72edf3 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -585,7 +585,7 @@ async_copy_data(int frombio, struct bio *bio, struct page *page,
        init_async_submit(&submit, flags, tx, NULL, NULL, NULL);
 
        bio_for_each_segment(bvl, bio, i) {
-               int len = bio_iovec_idx(bio, i)->bv_len;
+               int len = bvl->bv_len;
                int clen;
                int b_offset = 0;
 
@@ -601,8 +601,8 @@ async_copy_data(int frombio, struct bio *bio, struct page *page,
                        clen = len;
 
                if (clen > 0) {
-                       b_offset += bio_iovec_idx(bio, i)->bv_offset;
-                       bio_page = bio_iovec_idx(bio, i)->bv_page;
+                       b_offset += bvl->bv_offset;
+                       bio_page = bvl->bv_page;
                        if (frombio)
                                tx = async_memcpy(page, bio_page, page_offset,
                                                  b_offset, clen, &submit);