diff options
Diffstat (limited to 'block/elevator.c')
| -rw-r--r-- | block/elevator.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/block/elevator.c b/block/elevator.c index 1f39f6e8ebb9..19a78d5516ba 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -694,12 +694,18 @@ void elevator_init_mq(struct request_queue *q) if (!e) return; + /* + * We are called before adding disk, when there isn't any FS I/O, + * so freezing queue plus canceling dispatch work is enough to + * drain any dispatch activities originated from passthrough + * requests, then no need to quiesce queue which may add long boot + * latency, especially when lots of disks are involved. + */ blk_mq_freeze_queue(q); - blk_mq_quiesce_queue(q); + blk_mq_cancel_work_sync(q); err = blk_mq_init_sched(q, e); - blk_mq_unquiesce_queue(q); blk_mq_unfreeze_queue(q); if (err) { |