NFS_DELEGATION_DELEGTIME
!test_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags))
set_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags);
clear_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags);
delegation->flags |= BIT(NFS_DELEGATION_DELEGTIME);
if (test_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags))
if (test_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags))
test_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags)) {