Commit d00000f9 authored by Eric Blake's avatar Eric Blake Committed by Kevin Wolf
Browse files

xen_disk: Switch to byte-based aio block access 



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: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent b5772fdd

hw/block/xen_disk.c

+4 −6
Original line number Diff line number Diff line
@@ -554,8 +554,7 @@ 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,

        blk_aio_preadv(blkdev->blk, ioreq->start, &ioreq->v, 0,

                       qemu_aio_complete, ioreq);

        break;

    case BLKIF_OP_WRITE:
@@ -569,8 +568,7 @@ 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,

        blk_aio_pwritev(blkdev->blk, ioreq->start, &ioreq->v, 0,

                        qemu_aio_complete, ioreq);

        break;

    case BLKIF_OP_DISCARD: