aoe: use bio->bi_idx

Instead of starting with bio->bi_io_vec, use the offset in bio->bi_idx.

Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index a7dbe6f53c14..196ae7a37643 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -142,7 +142,8 @@ aoeblk_make_request(request_queue_t *q, struct bio *bio)
         buf->bio = bio;
         buf->resid = bio->bi_size;
         buf->sector = bio->bi_sector;
-        buf->bv = buf->bio->bi_io_vec;
+        buf->bv = &bio->bi_io_vec[bio->bi_idx];
+        WARN_ON(buf->bv->bv_len == 0);
         buf->bv_resid = buf->bv->bv_len;
         buf->bufaddr = page_address(buf->bv->bv_page) + buf->bv->bv_offset;