pktcdvd: don't rely on bio_init() preserving bio->bi_io_vec

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 540bf3676985..ba2f550963bc 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -1133,16 +1133,20 @@ static void pkt_gather_data(struct pktcdvd_device *pd, struct packet_data *pkt)
          * Schedule reads for missing parts of the packet.
          */
         for (f = 0; f < pkt->frames; f++) {
+                struct bio_vec *vec;
+
                 int p, offset;
                 if (written[f])
                         continue;
                 bio = pkt->r_bios[f];
+                vec = bio->bi_io_vec;
                 bio_init(bio);
                 bio->bi_max_vecs = 1;
                 bio->bi_sector = pkt->sector + f * (CD_FRAMESIZE >> 9);
                 bio->bi_bdev = pd->bdev;
                 bio->bi_end_io = pkt_end_io_read;
                 bio->bi_private = pkt;
+                bio->bi_io_vec = vec;
 
                 p = (f * CD_FRAMESIZE) / PAGE_SIZE;
                 offset = (f * CD_FRAMESIZE) % PAGE_SIZE;
@@ -1439,6 +1443,7 @@ static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
         pkt->w_bio->bi_bdev = pd->bdev;
         pkt->w_bio->bi_end_io = pkt_end_io_packet_write;
         pkt->w_bio->bi_private = pkt;
+        pkt->w_bio->bi_io_vec = bvec;
         for (f = 0; f < pkt->frames; f++)
                 if (!bio_add_page(pkt->w_bio, bvec[f].bv_page, CD_FRAMESIZE, bvec[f].bv_offset))
                         BUG();