[patches] threaded vma patches (was Re: missing madvise functionality)

[Nick Piggin]

Eric Dumazet wrote:
> Nick Piggin a écrit :
>
> > Eric Dumazet wrote:
> >
> > > I do think such workloads might benefit from a vma_cache not shared 
> > > by all threads but private to each thread. A sequence could 
> > > invalidate the cache(s).
> > >
> > > ie instead of a mm->mmap_cache, having a mm->sequence, and each 
> > > thread having a current->mmap_cache and current->mm_sequence
> >
> >
> > I have a patchset to do exactly this, btw.
>
>
> Could you repost it please ?

Sure. I'll send you them privately because they're against an older
kernel.

> > Anyway what is the status of the private futex work. I don't think that
> > is very intrusive or complicated, so it should get merged ASAP (so then
> > at least we have the interface there).
>
> It seems nobody but you and me cared.

Sad. Although Ulrich did seem interested at one point I think? Ulrich,
do you agree at least with the interface that Eric is proposing? If
yes, then Andrew, do you have any objections to putting Eric's fairly
important patch at least into -mm?

--
SUSE Labs, Novell Inc.
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