linux-kernel - [PATCH 02/21] workqueue: don't free pool->worker

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Message-Id: <1363721306-2030-3-git-send-email-laijs@cn.fujitsu.com>
Date:	Wed, 20 Mar 2013 03:28:02 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org
Cc:	Lai Jiangshan <laijs@...fujitsu.com>
Subject: [PATCH 02/21] workqueue: don't free pool->worker_idr by RCU

pool->worker_idr nor worker->id is not protected by RCU.
don't need to free pool->worker_idr by RCU.

Just free it directly.

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
 kernel/workqueue.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 40f4017..298cefe 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3411,7 +3411,6 @@ static void rcu_free_pool(struct rcu_head *rcu)
 {
 	struct worker_pool *pool = container_of(rcu, struct worker_pool, rcu);
 
-	idr_destroy(&pool->worker_idr);
 	free_workqueue_attrs(pool->attrs);
 	kfree(pool);
 }
@@ -3462,6 +3461,7 @@ static void put_unbound_pool(struct worker_pool *pool)
 		destroy_worker(worker);
 	WARN_ON(pool->nr_workers || pool->nr_idle);
 
+	idr_destroy(&pool->worker_idr);
 	spin_unlock_irq(&pool->lock);
 	mutex_unlock(&pool->manager_mutex);
 	mutex_unlock(&pool->manager_arb);
-- 
1.7.7.6

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