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>

2 files changed, 3 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;
 
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index f2b8f558e1bb..2d0bcdd96698 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -166,6 +166,7 @@ aoecmd_ata_rw(struct aoedev *d, struct frame *f)
                 d->inprocess = NULL;
         } else if (buf->bv_resid == 0) {
                 buf->bv++;
+                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;
         }