This commit moves `MountFd` and `MountFds` into a separate module and uses `Arc<MountFd>` for refcounting instead of rolling our own refcounting.
Supersedes !70 --- https://gitlab.com/virtio-fs/virtiofsd/-/merge_requests/73 _______________________________________________ Virtio-fs mailing list Virtio-fs@redhat.com https://listman.redhat.com/mailman/listinfo/virtio-fs
