netdev - [PATCH] core: fix the use of this_cpu

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Date:	Thu, 28 Mar 2013 17:42:41 +0800
From:	roy.qing.li@...il.com
To:	netdev@...r.kernel.org
Subject: [PATCH] core: fix the use of this_cpu_ptr

From: Li RongQing <roy.qing.li@...il.com>

flush_tasklet is not percpu var, and percpu is percpu var, and
	this_cpu_ptr(&info->cache->percpu->flush_tasklet)
is not equal to
	&this_cpu_ptr(info->cache->percpu)->flush_tasklet

1f743b076(use this_cpu_ptr per-cpu helper) introduced this bug.

Signed-off-by: Li RongQing <roy.qing.li@...il.com>
---
 net/core/flow.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/flow.c b/net/core/flow.c
index 7fae135..e8084b8 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -346,7 +346,7 @@ static void flow_cache_flush_per_cpu(void *data)
 	struct flow_flush_info *info = data;
 	struct tasklet_struct *tasklet;
 
-	tasklet = this_cpu_ptr(&info->cache->percpu->flush_tasklet);
+	tasklet = &this_cpu_ptr(info->cache->percpu)->flush_tasklet;
 	tasklet->data = (unsigned long)info;
 	tasklet_schedule(tasklet);
 }
-- 
1.7.10.4

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