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cfq-iosched: Fix a memory leak of per cpu stats for root group
author
Vivek Goyal
<vgoyal@redhat.com>
Mon, 23 May 2011 08:02:19 +0000
(10:02 +0200)
committer
Jens Axboe
<jaxboe@fusionio.com>
Mon, 23 May 2011 08:02:19 +0000
(10:02 +0200)
We allocated per cpu stats struct for root group but did not free it.
Fix it.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
block/cfq-iosched.c
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diff --git
a/block/cfq-iosched.c
b/block/cfq-iosched.c
index d646b279c8bbe88faee7a7369f1c26bbe4fc2ab8..0316f6eece0383437cb63364d85b82e259c5eb8c 100644
(file)
--- a/
block/cfq-iosched.c
+++ b/
block/cfq-iosched.c
@@
-3940,6
+3940,11
@@
static void cfq_exit_queue(struct elevator_queue *e)
*/
if (wait)
synchronize_rcu();
+
+#ifdef CONFIG_CFQ_GROUP_IOSCHED
+ /* Free up per cpu stats for root group */
+ free_percpu(cfqd->root_group.blkg.stats_cpu);
+#endif
kfree(cfqd);
}