[PATCH tip/core/rcu 79/86] jbd2,rcu: convert call_rcu(free_devcache) to kfree_rcu()

Paul E. McKenney
2011-05-01T13:29:50Z

From: Lai Jiangshan <laijs@cn.fujitsu.com>

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

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>
---
fs/jbd2/journal.c | 7 +------
1 files changed, 1 insertions(+), 6 deletions(-)

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index e0ec3db..13fb464 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2390,11 +2390,6 @@ struct devname_cache {
static struct devname_cache *devcache[1 << CACHE_SIZE_BITS];
static DEFINE_SPINLOCK(devname_cache_lock);

-static void free_devcache(struct rcu_head *rcu)
-{
- kfree(rcu);
-}
-
const char *jbd2_dev_to_name(dev_t device)
{
int i = hash_32(device, CACHE_SIZE_BITS);
@@ -2423,7 +2418,7 @@ const char *jbd2_dev_to_name(dev_t device)
spin_unlock(&devname_cache_lock);
return ret;
}
- call_rcu(&devcache[i]->rcu, free_devcache);
+ kfree_rcu(devcache[i], rcu);
}
devcache[i] = new_dev;
devcache[i]->device = device;
--
1.7.3.2