[PATCH -next] rcu: Use the BITS_PER_LONG macro

[Jinjie Ruan]

sizeof(unsigned long) * 8 is the number of bits in an unsigned long
variable, replace it with BITS_PER_LONG macro to make it simpler.

Signed-off-by: Jinjie Ruan <ruanjin...@huawei.com>
---
 kernel/rcu/tree.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index a60616e69b66..b48864df415c 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -5579,8 +5579,7 @@ void rcu_init_geometry(void)
         * Complain and fall back to the compile-time values if this
         * limit is exceeded.
         */
-       if (rcu_fanout_leaf < 2 ||
-           rcu_fanout_leaf > sizeof(unsigned long) * 8) {
+       if (rcu_fanout_leaf < 2 || rcu_fanout_leaf > BITS_PER_LONG) {
                rcu_fanout_leaf = RCU_FANOUT_LEAF;
                WARN_ON(1);
                return;
-- 
2.34.1