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linux/include/linux/percpu-refcount.h
Tejun Heo 4c907baf36 percpu_ref: implement percpu_ref_is_dying() 
Implement percpu_ref_is_dying() which tests whether the ref is dying
or dead.  This is useful to determine the current state when a
percpu_ref is used as a cyclic on/off switch via kill and reinit.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Kent Overstreet <kmo@daterainc.com>
2015-01-06 10:26:10 -05:00

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