cfq-iosched: Get rid of unnecessary local variable

Use of local varibale "n" seems to be unnecessary. Remove it. This brings
it inline with function __cfq_group_st_add(), which is also doing the
similar operation of adding a group to a rb tree.

No functionality change here.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 2 insertions, 6 deletions

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index e34e142b6dbb..5ad4cae1beb2 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1658,8 +1658,6 @@ static void cfq_service_tree_add(struct cfq_data *cfqd, struct cfq_queue *cfqq,
         cfqq->service_tree = st;
         p = &st->rb.rb_node;
         while (*p) {
-                struct rb_node **n;
-
                 parent = *p;
                 __cfqq = rb_entry(parent, struct cfq_queue, rb_node);
 
@@ -1667,13 +1665,11 @@ static void cfq_service_tree_add(struct cfq_data *cfqd, struct cfq_queue *cfqq,
                  * sort by key, that represents service time.
                  */
                 if (time_before(rb_key, __cfqq->rb_key))
-                        n = &(*p)->rb_left;
+                        p = &parent->rb_left;
                 else {
-                        n = &(*p)->rb_right;
+                        p = &parent->rb_right;
                         left = 0;
                 }
-
-                p = n;
         }
 
         if (left)