-/*
- * For splice reading, we unfortunately cannot (yet) vmsplice the other way.
- * So just splice the data from the file into the pipe, and use regular
- * read to fill the buffer. Doesn't make a lot of sense, but...
- */
-static int fio_splice_read(struct thread_data *td, struct io_u *io_u)
-{
- struct spliceio_data *sd = td->io_data;
- int ret, ret2, buflen;
- off_t offset;
- void *p;
-
- offset = io_u->offset;
- buflen = io_u->buflen;
- p = io_u->buf;
- while (buflen) {
- int this_len = buflen;
-
- if (this_len > SPLICE_DEF_SIZE)
- this_len = SPLICE_DEF_SIZE;
-
- ret = splice(td->fd, &offset, sd->pipe[1], NULL, this_len, SPLICE_F_MORE);
- if (ret < 0) {
- if (errno == ENODATA || errno == EAGAIN)
- continue;
-
- return errno;
- }
-
- buflen -= ret;
-
- while (ret) {
- ret2 = read(sd->pipe[0], p, ret);
- if (ret2 < 0)
- return errno;
-
- ret -= ret2;
- p += ret2;
- }
- }
-
- return io_u->buflen;
-}
-
-/*
- * For splice writing, we can vmsplice our data buffer directly into a
- * pipe and then splice that to a file.
- */
-static int fio_splice_write(struct thread_data *td, struct io_u *io_u)
-{
- struct spliceio_data *sd = td->io_data;
- struct iovec iov[1] = {
- {
- .iov_base = io_u->buf,
- .iov_len = io_u->buflen,
- }
- };
- struct pollfd pfd = { .fd = sd->pipe[1], .events = POLLOUT, };
- off_t off = io_u->offset;
- int ret, ret2;
-
- while (iov[0].iov_len) {
- if (poll(&pfd, 1, -1) < 0)
- return errno;
-
- ret = vmsplice(sd->pipe[1], iov, 1, SPLICE_F_NONBLOCK);
- if (ret < 0)
- return errno;
-
- iov[0].iov_len -= ret;
- iov[0].iov_base += ret;
-
- while (ret) {
- ret2 = splice(sd->pipe[0], NULL, td->fd, &off, ret, 0);
- if (ret2 < 0)
- return errno;
-
- ret -= ret2;
- }
- }
-
- return io_u->buflen;
-}
-
-static int fio_spliceio_queue(struct thread_data *td, struct io_u *io_u)
-{
- struct spliceio_data *sd = td->io_data;
- int ret;
-
- if (io_u->ddir == DDIR_READ)
- ret = fio_splice_read(td, io_u);
- else
- ret = fio_splice_write(td, io_u);
-
- if ((unsigned int) ret != io_u->buflen) {
- if (ret > 0) {
- io_u->resid = io_u->buflen - ret;
- io_u->error = ENODATA;
- } else
- io_u->error = errno;
- }
-
- if (!io_u->error)
- sd->last_io_u = io_u;
-
- return io_u->error;
-}
-
-static void fio_spliceio_cleanup(struct thread_data *td)