Re: [RFC] NUMA futex hashing

[Andi Kleen]

>
> We may have special case for PRIVATE futexes (they dont need to be chained in 
> a global table, but a process private table)

What do you mean with PRIVATE futex? 

Even if the futex mapping is only visible by a single MM mmap_sem is still needed
to protect against other threads doing mmap.
 
-Andi
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