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percpu: add missing lockdep_assert_held to func pcpu_free_area

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Add a missing lockdep_assert_held for pcpu_lock to improve consistency
and safety throughout mm/percpu.c.

Signed-off-by: Dennis Zhou <dennisz@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Dennis Zhou 2017-06-19 19:28:29 -04:00 committed by Tejun Heo
parent 1328710b8e
commit 5ccd30e40e
1 changed files with 2 additions and 0 deletions
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2
mm/percpu.c
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@ -672,6 +672,8 @@ static void pcpu_free_area(struct pcpu_chunk *chunk, int freeme,
int to_free = 0;
int *p;
lockdep_assert_held(&pcpu_lock);
freeme |= 1; /* we are searching for <given offset, in use> pair */
i = 0;