remove used member(struct rcu_data::rcu_tasklet)

[Lai Jiangshan]

	Since softirq works for rcu reclaimer, rcu_tasklet is unused now.

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>

diff --git a/kernel/rcupreempt.c b/kernel/rcupreempt.c
index e1cdf19..4270de6 100644
--- a/kernel/rcupreempt.c
+++ b/kernel/rcupreempt.c
@@ -82,7 +82,6 @@ struct rcu_data {
 	spinlock_t	lock;		/* Protect rcu_data fields. */
 	long		completed;	/* Number of last completed batch. */
 	int		waitlistcount;
-	struct tasklet_struct rcu_tasklet;
 	struct rcu_head *nextlist;
 	struct rcu_head **nexttail;
 	struct rcu_head *waitlist[GP_STAGES];


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