Commit-ID: a95cded32de3deae13af34715200532e6823cc9f
Gitweb: http://git.kernel.org/tip/a95cded32de3deae13af34715200532e6823cc9f
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Sun, 1 May 2011 23:21:00 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Wed, 20 Jul 2011 14:10:18 -0700
sysctl,rcu: Convert call_rcu(free_head) to kfree
The RCU callback free_head just calls kfree(), so we can use kfree_rcu()
instead of call_rcu().
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
---
kernel/sysctl.c | 11 +++--------
1 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f175d98..11d65b5 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1590,16 +1590,11 @@ void sysctl_head_get(struct ctl_table_header *head)
spin_unlock(&sysctl_lock);
}
-static void free_head(struct rcu_head *rcu)
-{
- kfree(container_of(rcu, struct ctl_table_header, rcu));
-}
-
void sysctl_head_put(struct ctl_table_header *head)
{
spin_lock(&sysctl_lock);
if (!--head->count)
- call_rcu(&head->rcu, free_head);
+ kfree_rcu(head, rcu);
spin_unlock(&sysctl_lock);
}
@@ -1971,10 +1966,10 @@ void unregister_sysctl_table(struct ctl_table_header * header)
start_unregistering(header);
if (!--header->parent->count) {
WARN_ON(1);
- call_rcu(&header->parent->rcu, free_head);
+ kfree_rcu(header->parent, rcu);
}
if (!--header->count)
- call_rcu(&header->rcu, free_head);
+ kfree_rcu(header, rcu);
spin_unlock(&sysctl_lock);
}
--
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