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res_counter: Merge res_counter_charge and res_counter_charge_nofail

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These two functions do almost the same thing and duplicate some code.
Merge their implementation into a single common function.
res_counter_charge_locked() takes one more parameter but it doesn't seem
to be used outside res_counter.c yet anyway.

There is no (intended) change in the behaviour.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Glauber Costa <glommer@parallels.com>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Li Zefan <lizefan@huawei.com>
This commit is contained in:
Frederic Weisbecker
2012-04-25 01:11:35 +02:00
committed by Tejun Heo
parent c4c27fbdda
commit 4d8438f044
3 changed files with 40 additions and 45 deletions
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Documentation/cgroups/resource_counter.txt
+2 -2
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@@ -77,11 +77,11 @@ to work with it.
where the charging failed.
d. int res_counter_charge_locked
(struct res_counter *rc, unsigned long val)
(struct res_counter *rc, unsigned long val, bool force)
The same as res_counter_charge(), but it must not acquire/release the
res_counter->lock internally (it must be called with res_counter->lock
held).
held). The force parameter indicates whether we can bypass the limit.
e. void res_counter_uncharge[_locked]
(struct res_counter *rc, unsigned long val)