[RFC][PATCH 02/16] writeback: remove redundant list initialization

[Artem Bityutskiy <dedekind1@gmail.com>]

From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

We do not have to call 'INIT_LIST_HEAD()' for list elements
('bdi->bdi_list') before inserting them to the 'bdi_pending_list',
because 'list_add_tail' will initialize the element anyway. Thus,
kill the redundant initialization.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
---
 mm/backing-dev.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index ff5669a..0fad60d 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -416,7 +416,6 @@ static void bdi_add_to_pending(struct rcu_head *head)
 	struct backing_dev_info *bdi;
 
 	bdi = container_of(head, struct backing_dev_info, rcu_head);
-	INIT_LIST_HEAD(&bdi->bdi_list);
 
 	spin_lock(&bdi_lock);
 	list_add_tail(&bdi->bdi_list, &bdi_pending_list);
-- 
1.7.1.1