Re: [PATCH] mm, arch: Complete pagefault_disable abstraction

From: Andrew Morton
Date: Wed Oct 05 2011 - 17:39:12 EST

On Wed, 05 Oct 2011 15:09:29 +0200
Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> Currently we already have pagefault_{disable,enable}() but they're
> nothing more than a glorified preempt_{disable,enable}().

That's not very accurate or useful. Unlike preempt_disable(),
pagefault_disable() will raise the preempt count when CONFIG_PREEMPT=n.
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