nfs_idmap_cache_flush
nfs_idmap_cache_flush(cip);
nfs_idmap_cache_flush(&nig->u2s_ci);
nfs_idmap_cache_flush(&nig->s2u_ci);
nfs_idmap_cache_flush(&nig->g2s_ci);
nfs_idmap_cache_flush(&nig->s2g_ci);
static void nfs_idmap_cache_flush(idmap_cache_info_t *);