powerpc/spufs: convert userns uid/gid mount options to kuid/kgid

Acked-by: Jeremy Kerr <[e-mail]>
Tested-by: Jeremy Kerr <[e-mail]>
Signed-off-by: Dwight Engen <[e-mail]>
Reviewed-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Ben Myers <[e-mail]>

arch/powerpc/platforms/cell/spufs/inode.c

···
 		case Opt_uid:
 			if (match_int(&args[0], &option))
 				return 0;
-			root->i_uid = option;
+			root->i_uid = make_kuid(current_user_ns(), option);
+			if (!uid_valid(root->i_uid))
+				return 0;
 			break;
 		case Opt_gid:
 			if (match_int(&args[0], &option))
 				return 0;
-			root->i_gid = option;
+			root->i_gid = make_kgid(current_user_ns(), option);
+			if (!gid_valid(root->i_gid))
+				return 0;
 			break;
 		case Opt_mode:
 			if (match_octal(&args[0], &option))