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

[Lai Jiangshan]

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

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
---
 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

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