CEPH_FEATUREMASK_ 15 include/linux/ceph/ceph_features.h static const uint64_t CEPH_FEATUREMASK_##name = \ CEPH_FEATUREMASK_ 38 include/linux/ceph/ceph_features.h (((x) & (CEPH_FEATUREMASK_##name)) == (CEPH_FEATUREMASK_##name))