linux-kernel - [PATCH 1/2] blk-throttle: Free up policy node associated with deleted rule

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Message-Id: <1319144906-5066-1-git-send-email-vgoyal@redhat.com>
Date:	Thu, 20 Oct 2011 17:08:25 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	linux-kernel@...r.kernel.org, jaxboe@...ionio.com
Cc:	vgoyal@...hat.com, tj@...nel.org
Subject: [PATCH 1/2] blk-throttle: Free up policy node associated with deleted rule

If a rule is being deleted, free up associated policy node. Otherwise
that memory is leaked.

Signed-off-by: Vivek Goyal <vgoyal@...hat.com>
---
 block/blk-cgroup.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index b596e54..4ddf11f 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -1085,6 +1085,7 @@ static int blkiocg_file_write(struct cgroup *cgrp, struct cftype *cft,
 
 	if (blkio_delete_rule_command(newpn)) {
 		blkio_policy_delete_node(pn);
+		kfree(pn);
 		spin_unlock_irq(&blkcg->lock);
 		goto update_io_group;
 	}
-- 
1.7.4.4

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