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Subject[PATCH tip/core/rcu 35/86] cgroup,rcu: convert call_rcu(free_cgroup_rcu) to kfree_rcu()
Date
From: Lai Jiangshan <laijs@cn.fujitsu.com>

The rcu callback free_cgroup_rcu() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(free_cgroup_rcu).

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
kernel/cgroup.c | 9 +--------
1 files changed, 1 insertions(+), 8 deletions(-)

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index d5160a8..20451ce 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -806,13 +806,6 @@ static int cgroup_call_pre_destroy(struct cgroup *cgrp)
return ret;
}

-static void free_cgroup_rcu(struct rcu_head *obj)
-{
- struct cgroup *cgrp = container_of(obj, struct cgroup, rcu_head);
-
- kfree(cgrp);
-}
-
static void cgroup_diput(struct dentry *dentry, struct inode *inode)
{
/* is dentry a directory ? if so, kfree() associated cgroup */
@@ -850,7 +843,7 @@ static void cgroup_diput(struct dentry *dentry, struct inode *inode)
*/
BUG_ON(!list_empty(&cgrp->pidlists));

- call_rcu(&cgrp->rcu_head, free_cgroup_rcu);
+ kfree_rcu(cgrp, rcu_head);
}
iput(inode);
}
--
1.7.3.2


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