[PATCH 2/2] srcu: Fix the comparision in srcu_invl_snp_seq()

[Pingfan Liu <kernelfans@gmail.com>]

A seq contains two fields: counter and state.

SRCU_SNP_INIT_SEQ is used as invalid initial value for srcu_node GP
sequence numbers. Hence srcu_invl_snp_seq() should compare both fields
of a seq.

Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: rcu@vger.kernel.org
---
 kernel/rcu/srcutree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index 1c304fec89c0..725c82bb0a6a 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -154,7 +154,7 @@ static void init_srcu_struct_data(struct srcu_struct *ssp)
  */
 static inline bool srcu_invl_snp_seq(unsigned long s)
 {
-	return rcu_seq_state(s) == SRCU_SNP_INIT_SEQ;
+	return s == SRCU_SNP_INIT_SEQ;
 }
 
 /*
-- 
2.31.1