On 12/25/2012 07:27 PM, Oleg Nesterov wrote: > On 12/25, Oleg Nesterov wrote: >> >> And if we add another format we should think >> twice. > > And btw this applies to the whole series. > > I guess that probably you actually need DUMP, not DEQUEUE. but the > latter is not trivial. However, perhaps we can do this assuming that > all other threads are sleeping and nobody can do dequeue_signal(). > Say, we can play with ppos/llseek. If *ppos is not zero, > signalfd_dequeue() could dump the nth entry from list or return 0.
This would be perfect, but isn't it better to preserve the pos semantics -- we do know size of entry we're about to copy, we can treat pos as offset in bytes, not in elements. > Oleg. > > . > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
