[PATCH] Fix bug in RCU torture test

[Srivatsa Vaddagiri <vatsa@in.ibm.com>]

While doing some test of RCU torture module, I hit a OOPS in rcu_do_batch,
which was trying to processes callback of a module that was just removed.
This is because we weren't waiting long enough for all callbacks to fire.

Patch below fixes that.

Signed-off-by : Srivatsa Vaddagiri <vatsa@in.ibm.com>


---

 linux-2.6.15-rc5-mm1-root/kernel/rcutorture.c |    3 +--
 1 files changed, 1 insertion(+), 2 deletions(-)

diff -puN kernel/rcutorture.c~rcutorture_fix kernel/rcutorture.c
--- linux-2.6.15-rc5-mm1/kernel/rcutorture.c~rcutorture_fix	2005-12-05 15:33:06.000000000 +0530
+++ linux-2.6.15-rc5-mm1-root/kernel/rcutorture.c	2005-12-05 15:33:17.000000000 +0530
@@ -408,9 +408,8 @@ rcu_torture_cleanup(void)
 	stats_task = NULL;
 
 	/* Wait for all RCU callbacks to fire.  */
+	rcu_barrier();
 
-	for (i = 0; i < RCU_TORTURE_PIPE_LEN; i++)
-		synchronize_rcu();
 	rcu_torture_stats_print();  /* -After- the stats thread is stopped! */
 	printk(KERN_ALERT TORTURE_FLAG
 	       "--- End of test: %s\n",

_


-- 


Thanks and Regards,
Srivatsa Vaddagiri,
Linux Technology Center,
IBM Software Labs,
Bangalore, INDIA - 560017