[PATCH 6/7 V3] idr: reduce the unneeded check in free_layer()

[Lai Jiangshan <laijs@cn.fujitsu.com>]

If "idr->hint == p" is true, it also implies "idr->hint" is true(not NULL).

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Tejun Heo <tj@kernel.org>
---
 lib/idr.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/idr.c b/lib/idr.c
index 9ed37a7..39158ab 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -145,7 +145,7 @@ static void idr_layer_rcu_free(struct rcu_head *head)
 
 static inline void free_layer(struct idr *idr, struct idr_layer *p)
 {
-	if (idr->hint && idr->hint == p)
+	if (idr->hint == p)
 		RCU_INIT_POINTER(idr->hint, NULL);
 	call_rcu(&p->rcu_head, idr_layer_rcu_free);
 }
-- 
1.7.4.4