From ebd8fef304f99da84d4a52ad056f6137ac9652d4 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 8 Sep 2014 09:51:29 +0900
Subject: [PATCH] percpu_counter: make percpu_counters_lock irq-safe

percpu_counter is scheduled to grow @gfp support to allow atomic
initialization.  This patch makes percpu_counters_lock irq-safe so
that it can be safely used from atomic contexts.

Signed-off-by: Tejun Heo <tj@kernel.org>
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