NFSD4_CALLBACK_RUNNING
clear_and_wake_up_bit(NFSD4_CALLBACK_RUNNING, &cb->cb_flags);
clear_bit(NFSD4_CALLBACK_RUNNING, &cb->cb_flags);
if (!test_and_set_bit(NFSD4_CALLBACK_RUNNING, &ls->ls_recall.cb_flags)) {
if (test_and_set_bit(NFSD4_CALLBACK_RUNNING, &ncf->ncf_getattr.cb_flags))
if (test_and_set_bit(NFSD4_CALLBACK_RUNNING, &dp->dl_recall.cb_flags))
if (test_and_set_bit(NFSD4_CALLBACK_RUNNING, &clp->cl_ra->ra_cb.cb_flags))
wait_on_bit_timeout(&ncf->ncf_getattr.cb_flags, NFSD4_CALLBACK_RUNNING,
if (!test_and_set_bit(NFSD4_CALLBACK_RUNNING, &cb->cb_flags))