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| author | Sagi Grimberg <sagi@grimberg.me> | 2017-07-04 09:57:09 +0300 |
|---|---|---|
| committer | Sagi Grimberg <sagi@grimberg.me> | 2017-07-06 09:49:05 +0300 |
| commit | b52c2e92546ee794a5bbab4d8ea435c1de85a8cb (patch) | |
| tree | 1c08c453408a45a247e6a23204e39aa7f318c9c2 /drivers/block | |
| parent | 8d7b8fafad87c3404f72ce2d36c79c48be1129a6 (diff) | |
| download | linux-b52c2e92546ee794a5bbab4d8ea435c1de85a8cb.tar.gz | |
nbd: quiesce request queues to make sure no submissions are inflight
Unlike blk_mq_stop_hw_queues, blk_mq_quiesce_queue respects the submission path rcu grace. quiesce the queue before iterating on live tags. Reviewed-by: Ming Lei <ming.lei@redhat.com> Acked-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/nbd.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 977ec960dd2f..dea7d85134ee 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -661,9 +661,9 @@ static void nbd_clear_req(struct request *req, void *data, bool reserved) static void nbd_clear_que(struct nbd_device *nbd) { - blk_mq_stop_hw_queues(nbd->disk->queue); + blk_mq_quiesce_queue(nbd->disk->queue); blk_mq_tagset_busy_iter(&nbd->tag_set, nbd_clear_req, NULL); - blk_mq_start_hw_queues(nbd->disk->queue); + blk_mq_unquiesce_queue(nbd->disk->queue); dev_dbg(disk_to_dev(nbd->disk), "queue cleared\n"); } |