rcu: Move rcu_nocb_gp_get() to ->gp_seq
This commit makes rcu_try_advance_all_cbs() use ->gp_seq. It uses rcu_seq_ctr() in order to shift away the state bits, so that the low-order bits of the result may safely be used to index ->nocb_gp_wq[]. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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@ -1852,7 +1852,7 @@ static void rcu_nocb_gp_cleanup(struct swait_queue_head *sq)
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static struct swait_queue_head *rcu_nocb_gp_get(struct rcu_node *rnp)
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{
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return &rnp->nocb_gp_wq[rnp->completed & 0x1];
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return &rnp->nocb_gp_wq[rcu_seq_ctr(rnp->gp_seq) & 0x1];
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}
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static void rcu_init_one_nocb(struct rcu_node *rnp)
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