linux-kernel - [PATCH 5/6] cfq-iosched: Get rid of unnecessary local variable

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Message-Id: <1349297821-30078-6-git-send-email-vgoyal@redhat.com>
Date:	Wed,  3 Oct 2012 16:57:00 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	linux-kernel@...r.kernel.org, axboe@...nel.dk
Cc:	vgoyal@...hat.com, jmoyer@...hat.com, tj@...nel.org
Subject: [PATCH 5/6] 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@...hat.com>
Acked-by: Jeff Moyer <jmoyer@...hat.com>
---
 block/cfq-iosched.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 6e6e00f..7dc5a49 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)
-- 
1.7.7.6

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