coda_ioctl_permission() is safe in RCU mode

return (mask & MAY_EXEC) ? -EACCES : 0; is non-blocking...

Signed-off-by: Al Viro <[e-mail]>

fs/coda/pioctl.c

···
 /* the coda pioctl inode ops */
 static int coda_ioctl_permission(struct inode *inode, int mask, unsigned int flags)
 {
-	if (flags & IPERM_FLAG_RCU)
-		return -ECHILD;
 	return (mask & MAY_EXEC) ? -EACCES : 0;
 }