From 3d331ad74fa33f0b14a46cf0de8358012d3c1500 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 6 Mar 2014 20:52:32 -0500
Subject: [PATCH] percpu: speed alloc_pcpu_area() up

If we know that first N areas are all in use, we can obviously skip
them when searching for a free one.  And that kind of hint is very
easy to maintain.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Tejun Heo <tj@kernel.org>
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