On Tue, Apr 03, 2007 at 10:20:02AM -0700, Ulrich Drepper wrote: > Andi Kleen wrote: > > Why do you need a lock for that? I don't see any problem with > > two threads doing that in parallel. The kernel would > > serialize it internally and one would fail, but that shouldn't > > be a problem. > > There is no lock at all at userlevel. I'm talking about locks in the > kernel.
mmap_sem? Your new operation wouldn't solve that neither. There were some proposals to fix mmap_sem (it's a big issue for futexes too) but they're are quite involved. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
