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authorTejun Heo <tj@kernel.org>2013-06-12 20:52:01 -0700
committerTejun Heo <tj@kernel.org>2013-06-13 11:08:26 -0700
commitacac7883ee7bcc32476963bce7baf73d44574dd1 (patch)
tree1ac595ff0f048b4beb74fd59819233b066c2d2f2 /lib/Makefile
parentac899061a93250c28562f05ad94d5c74603415bc (diff)
percpu-refcount: add __must_check to percpu_ref_init() and don't use ACCESS_ONCE() in percpu_ref_kill_rcu()
Two small changes. * Unlike most init functions, percpu_ref_init() allocates memory and may fail. Let's mark it with __must_check in case the caller forgets. * percpu_ref_kill_rcu() is unnecessarily using ACCESS_ONCE() to dereference @ref->pcpu_count, which can be misleading. The pointer is guaranteed to be valid and visible and can't change underneath the function. Drop ACCESS_ONCE(). Signed-off-by: Tejun Heo <tj@kernel.org>
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