[Qemu-devel] [PATCH v7 08/19] xen_disk: Switch to byte-based aio block access

[Eric Blake <eblake@redhat.com>]

Sector-based blk_aio_readv() and blk_aio_writev() should die; switch
to byte-based blk_aio_preadv() and blk_aio_pwritev() instead.

Signed-off-by: Eric Blake <eblake@redhat.com>
---
 hw/block/xen_disk.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c
index d4ce380..064c116 100644
--- a/hw/block/xen_disk.c
+++ b/hw/block/xen_disk.c
@@ -554,9 +554,8 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq)
         block_acct_start(blk_get_stats(blkdev->blk), &ioreq->acct,
                          ioreq->v.size, BLOCK_ACCT_READ);
         ioreq->aio_inflight++;
-        blk_aio_readv(blkdev->blk, ioreq->start / BLOCK_SIZE,
-                      &ioreq->v, ioreq->v.size / BLOCK_SIZE,
-                      qemu_aio_complete, ioreq);
+        blk_aio_preadv(blkdev->blk, ioreq->start, &ioreq->v, 0,
+                       qemu_aio_complete, ioreq);
         break;
     case BLKIF_OP_WRITE:
     case BLKIF_OP_FLUSH_DISKCACHE:
@@ -569,9 +568,8 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq)
                          ioreq->req.operation == BLKIF_OP_WRITE ?
                          BLOCK_ACCT_WRITE : BLOCK_ACCT_FLUSH);
         ioreq->aio_inflight++;
-        blk_aio_writev(blkdev->blk, ioreq->start / BLOCK_SIZE,
-                       &ioreq->v, ioreq->v.size / BLOCK_SIZE,
-                       qemu_aio_complete, ioreq);
+        blk_aio_pwritev(blkdev->blk, ioreq->start, &ioreq->v, 0,
+                        qemu_aio_complete, ioreq);
         break;
     case BLKIF_OP_DISCARD:
     {
-- 
2.5.5