[PATCH] vhost: Remove unused vhost_dev_{load|save}_inflight

[dave@treblig.org]

From: "Dr. David Alan Gilbert" <dave@treblig.org>

vhost_dev_load_inflight and vhost_dev_save_inflight have been
unused since they were added in 2019 by:

5ad204bf2a ("vhost-user: Support transferring inflight buffer between qemu and backend")

Remove them, and their helper vhost_dev_resize_inflight.

Signed-off-by: Dr. David Alan Gilbert <dave@treblig.org>
---
 hw/virtio/vhost.c         | 56 ---------------------------------------
 include/hw/virtio/vhost.h |  2 --
 2 files changed, 58 deletions(-)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 7c5ef81b55..76f9b2aaad 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1930,62 +1930,6 @@ void vhost_dev_free_inflight(struct vhost_inflight *inflight)
     }
 }
 
-static int vhost_dev_resize_inflight(struct vhost_inflight *inflight,
-                                     uint64_t new_size)
-{
-    Error *err = NULL;
-    int fd = -1;
-    void *addr = qemu_memfd_alloc("vhost-inflight", new_size,
-                                  F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL,
-                                  &fd, &err);
-
-    if (err) {
-        error_report_err(err);
-        return -ENOMEM;
-    }
-
-    vhost_dev_free_inflight(inflight);
-    inflight->offset = 0;
-    inflight->addr = addr;
-    inflight->fd = fd;
-    inflight->size = new_size;
-
-    return 0;
-}
-
-void vhost_dev_save_inflight(struct vhost_inflight *inflight, QEMUFile *f)
-{
-    if (inflight->addr) {
-        qemu_put_be64(f, inflight->size);
-        qemu_put_be16(f, inflight->queue_size);
-        qemu_put_buffer(f, inflight->addr, inflight->size);
-    } else {
-        qemu_put_be64(f, 0);
-    }
-}
-
-int vhost_dev_load_inflight(struct vhost_inflight *inflight, QEMUFile *f)
-{
-    uint64_t size;
-
-    size = qemu_get_be64(f);
-    if (!size) {
-        return 0;
-    }
-
-    if (inflight->size != size) {
-        int ret = vhost_dev_resize_inflight(inflight, size);
-        if (ret < 0) {
-            return ret;
-        }
-    }
-    inflight->queue_size = qemu_get_be16(f);
-
-    qemu_get_buffer(f, inflight->addr, size);
-
-    return 0;
-}
-
 int vhost_dev_prepare_inflight(struct vhost_dev *hdev, VirtIODevice *vdev)
 {
     int r;
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index c75be46c06..461c168c37 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -338,8 +338,6 @@ void vhost_virtqueue_stop(struct vhost_dev *dev, struct VirtIODevice *vdev,
 
 void vhost_dev_reset_inflight(struct vhost_inflight *inflight);
 void vhost_dev_free_inflight(struct vhost_inflight *inflight);
-void vhost_dev_save_inflight(struct vhost_inflight *inflight, QEMUFile *f);
-int vhost_dev_load_inflight(struct vhost_inflight *inflight, QEMUFile *f);
 int vhost_dev_prepare_inflight(struct vhost_dev *hdev, VirtIODevice *vdev);
 int vhost_dev_set_inflight(struct vhost_dev *dev,
                            struct vhost_inflight *inflight);
-- 
2.46.0