Re: [patch] 'sticky pages' support in the VM, futex-2.5.38-C5

[Jamie Lokier]

Ingo Molnar wrote:
> futexes were not really designed with COW in mind - they were designed
> to be used in non-COW shared memory. This is a very bad limitation

I thought that futex-based locks were only reliable with PROT_SEM
memory, for architectures that define PROT_SEM (e.g. PPC) -- because of
the need for locking primitives to work in a cache coherent manner.

Is this not so?

-- Jamie