Re: [PATCH 0/4] munmap: Flexible mem unmap operation interface forscheduling latency

[Peter Zijlstra]

On Mon, 2011-04-25 at 16:29 -0400, Steven Rostedt wrote:
> On Mon, 2011-04-25 at 21:47 +0200, Peter Zijlstra wrote:
> 
> > Also, -rt doesn't care since it already has preemptible mmu_gather.
> 
> To be fair, he did state:
> 
> >     In general, This is not a critical latency-path on preemption mode
> >     (PREEMPT_VOLUNTARY / PREEMPT_DESKTOP / PREEMPT_RT)

That doesn't parse for me... what does it say? The only one not listed
is the non-preempt option, that wouldn't reschedule no matter what
ZAP_BLOCK_SIZE.
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