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cfq_exit_queue() should cancel cfq_data->unplug_work 

Spotted by Nick <gentuu@gmail.com>, perhaps explains the first trace in
http://bugzilla.kernel.org/show_bug.cgi?id=9180.

cfq_exit_queue() should cancel cfqd->unplug_work before freeing cfqd.
blk_sync_queue() seems unneeded, removed.

Q: why cfq_exit_queue() calls cfq_shutdown_timer_wq() twice?

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Oleg Nesterov 2007-10-23 15:08:18 +02:00 committed by Jens Axboe
parent b238b3d4be
commit 4310864b9d
1 changed files with 1 additions and 1 deletions
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2
block/cfq-iosched.c
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@ -2053,7 +2053,7 @@ static void cfq_shutdown_timer_wq(struct cfq_data *cfqd)
{
del_timer_sync(&cfqd->idle_slice_timer);
del_timer_sync(&cfqd->idle_class_timer);
blk_sync_queue(cfqd->queue);
kblockd_flush_work(&cfqd->unplug_work);
}
static void cfq_put_async_queues(struct cfq_data *cfqd)