| commit | 4fb6e25049cb6fa0accc7f1b7c192b952fad7ac8 | [log] [tgz] |
|---|---|---|
| author | Tejun Heo <tj@kernel.org> | Fri May 09 15:11:53 2014 -0400 |
| committer | Tejun Heo <tj@kernel.org> | Fri May 09 15:42:35 2014 -0400 |
| tree | 6be13f79be6f0bb6dc51ca10431c9737af8aee92 | |
| parent | 2070d50e1cbe3d7f157cbf8e63279c893f375d7f [diff] |
percpu-refcount: implement percpu_ref_tryget() Implement percpu_ref_tryget() which fails if the refcnt already reached zero. Note that this is different from the recently renamed percpu_ref_tryget_live() which fails if the refcnt has been killed and is draining the remaining references. percpu_ref_tryget() succeeds on a killed refcnt as long as its current refcnt is above zero. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Kent Overstreet <kmo@daterainc.com>