Re: [PATCH RFC 00/15] decouple pagefault_disable() from preempt_disable()

From: Peter Zijlstra
Date: Thu May 07 2015 - 07:40:44 EST


On Thu, May 07, 2015 at 01:08:28PM +0200, Ingo Molnar wrote:
> Yes, but I'm wondering what I'm missing: is there any deep reason for
> making pagefaults-disabled sections non-atomic?

This all comes from -rt, where we had significant latencies due to these
things.
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