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[tip/core/rcu,18/28] jbd2,rcu: Convert call_rcu(free_devcache) to kfree_rcu()

Message ID 1307561407-13809-18-git-send-email-paulmck@linux.vnet.ibm.com
State New
Headers show

Commit Message

Paul E. McKenney June 8, 2011, 7:29 p.m. UTC 
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>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
---
 fs/jbd2/journal.c |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)
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Patch

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;