return io_u->xfer_buflen;
}
-
/*
* For splice writing, we can vmsplice our data buffer directly into a
* pipe and then splice that to a file.
int ret;
if (io_u->ddir == DDIR_READ) {
- if (sd->vmsplice_to_user)
+ if (sd->vmsplice_to_user) {
ret = fio_splice_read(td, io_u);
- else
+ /*
+ * This kernel doesn't support vmsplice to user
+ * space. Reset the vmsplice_to_user flag, so that
+ * we retry below and don't hit this path again.
+ */
+ if (ret == -EBADF)
+ sd->vmsplice_to_user = 0;
+ }
+ if (!sd->vmsplice_to_user)
ret = fio_splice_read_old(td, io_u);
} else if (io_u->ddir == DDIR_WRITE)
ret = fio_splice_write(td, io_u);
}
/*
- * need some check for enabling this, for now just leave it disabled
+ * Assume this work, we'll reset this if it doesn't
*/
- sd->vmsplice_to_user = 0;
+ sd->vmsplice_to_user = 1;
td->io_ops->data = sd;
return 0;