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

9.9 KiB

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