kgid_has_mapping
if (!kgid_has_mapping(fsc->user_ns, kgid))
!kgid_has_mapping(current_user_ns(), ctx.stat.gid))
if (!kgid_has_mapping(user_ns, pa->e_gid))
kgid_has_mapping(fs_userns, kgid);
if (!kgid_has_mapping(fc->user_ns, gid))
!kgid_has_mapping(parent_ns, group))
if (!kgid_has_mapping(fc->user_ns, kgid))