Use the new call_rcu_rt() primitive to immediately free dentries
to slab for UP/CONFIG_PREEMPT. This should improve scheduling
latencies by reducing rcu callback processing time.


 fs/dcache.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN fs/dcache.c~dcache-rcu-latency fs/dcache.c
--- linux-2.6.0-test8-rcu/fs/dcache.c~dcache-rcu-latency	2003-11-30 21:22:02.000000000 +0530
+++ linux-2.6.0-test8-rcu-dipankar/fs/dcache.c	2003-11-30 21:22:16.000000000 +0530
@@ -78,7 +78,7 @@ static void d_free(struct dentry *dentry
 {
 	if (dentry->d_op && dentry->d_op->d_release)
 		dentry->d_op->d_release(dentry);
- 	call_rcu(&dentry->d_rcu, d_callback, dentry);
+ 	call_rcu_rt(&dentry->d_rcu, d_callback, dentry);
 }
 
 /*

_