linux-kernel - [PATCH] blk-throttle: get rid of wrong initialization of 'limits

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Message-Id: <1305125443-5683-1-git-send-email-namhyung@gmail.com>
Date:	Wed, 11 May 2011 23:50:43 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	linux-kernel@...r.kernel.org, Vivek Goyal <vgoyal@...hat.com>
Subject: [PATCH] blk-throttle: get rid of wrong initialization of 'limits_changed'

When a new group is initialized, we should set @tg->limits_changed
to false instead of setting @td->limits_changed. But @td and @tg
are initialized to zero via kzalloc_node(), there is no need to set
it explicitly. Just get rid of them.

Signed-off-by: Namhyung Kim <namhyung@...il.com>
Cc: Vivek Goyal <vgoyal@...hat.com>
---
 block/blk-throttle.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 0475a22a420d..5e241ce2695b 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -201,7 +201,6 @@ static struct throtl_grp * throtl_find_alloc_tg(struct throtl_data *td,
 	RB_CLEAR_NODE(&tg->rb_node);
 	bio_list_init(&tg->bio_lists[0]);
 	bio_list_init(&tg->bio_lists[1]);
-	td->limits_changed = false;
 
 	/*
 	 * Take the initial reference that will be released on destroy
@@ -1060,7 +1059,6 @@ int blk_throtl_init(struct request_queue *q)
 
 	INIT_HLIST_HEAD(&td->tg_list);
 	td->tg_service_tree = THROTL_RB_ROOT;
-	td->limits_changed = false;
 
 	/* Init root group */
 	tg = &td->root_tg;
@@ -1072,7 +1070,6 @@ int blk_throtl_init(struct request_queue *q)
 	/* Practically unlimited BW */
 	tg->bps[0] = tg->bps[1] = -1;
 	tg->iops[0] = tg->iops[1] = -1;
-	td->limits_changed = false;
 
 	/*
 	 * Set root group reference to 2. One reference will be dropped when
-- 
1.7.5

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