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blk-mq: Drop explicit timeout sync in hotplug

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After commit 287922eb0b ("block: defer timeouts to a workqueue"),
deleting the timeout work after freezing the queue shouldn't be
necessary, since the synchronization is already enforced by the
acquisition of a q_usage_counter reference in blk_mq_timeout_work.

Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Reviewed-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Gabriel Krisman Bertazi 2016-11-28 15:01:48 -02:00 committed by Jens Axboe
parent d62118b6dd
commit 415d3dab96
1 changed files with 1 additions and 8 deletions
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9
block/blk-mq.c
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@ -2220,16 +2220,9 @@ static void blk_mq_queue_reinit_work(void)
*/
list_for_each_entry(q, &all_q_list, all_q_node)
blk_mq_freeze_queue_start(q);
list_for_each_entry(q, &all_q_list, all_q_node) {
list_for_each_entry(q, &all_q_list, all_q_node)
blk_mq_freeze_queue_wait(q);
/*
* timeout handler can't touch hw queue during the
* reinitialization
*/
del_timer_sync(&q->timeout);
}
list_for_each_entry(q, &all_q_list, all_q_node)
blk_mq_queue_reinit(q, &cpuhp_online_new);