workqueue: use kmem_cache_free() instead of kfree()

memory allocated by kmem_cache_alloc() should be freed using
kmem_cache_free(), not kfree().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index c273376ff73e6550e411eb9573b37178432d3d9a..154aa12af48e6a29313b6214bcb5c24fbf88e343 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3750,7 +3750,7 @@ static void free_unbound_pwq(struct pool_workqueue *pwq)
 
        if (pwq) {
                put_unbound_pool(pwq->pool);
-               kfree(pwq);
+               kmem_cache_free(pwq_cache, pwq);
        }
 }