fs_vfsp_global
fifovfsp = fs_vfsp_global(fifo_vfsops, fifodev, fifofstype, 1024);
extern vfs_t *fs_vfsp_global(struct vfsops *, dev_t, int, uint_t);
sock_vfsp = fs_vfsp_global(sockfs_vfsops, sockdev, fstype,