Commit 08b6261f authored by Vladimir Sementsov-Ogievskiy's avatar Vladimir Sementsov-Ogievskiy Committed by Kevin Wolf
Browse files

block/commit: use buffer-based io 



Signed-off-by: default avatarVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent 607dbdc4

block/commit.c

+2 −3
Original line number Diff line number Diff line
@@ -48,16 +48,15 @@ static int coroutine_fn commit_populate(BlockBackend *bs, BlockBackend *base, 
                                        void *buf)

{

    int ret = 0;

    QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);



    assert(bytes < SIZE_MAX);



    ret = blk_co_preadv(bs, offset, qiov.size, &qiov, 0);

    ret = blk_co_pread(bs, offset, bytes, buf, 0);

    if (ret < 0) {

        return ret;

    }



    ret = blk_co_pwritev(base, offset, qiov.size, &qiov, 0);

    ret = blk_co_pwrite(base, offset, bytes, buf, 0);

    if (ret < 0) {

        return ret;

    }