On 09/23, Waiman Long wrote: > > > + /* > + * In case the signal mask hasn't changed, we won't need to take > + * the lock. The current blocked mask can be modified by other CPUs. > + * To be safe, we need to do an atomic read without lock. As a result, > + * this check will only be done on 64-bit architectures. > + */ > + if ((_NSIG_WORDS == 1) && > + (READ_ONCE(tsk->blocked.sig[0]) == newset->sig[0])) > + return;
so in case you missed my reply to V1, I still think that the comment is wrong and you should drop the _NSIG_WORDS check. Oleg.
