From 86f727c07924e9f9b93edc31ba419daccece17c0 Mon Sep 17 00:00:00 2001 From: James Smart Date: Tue, 14 Sep 2021 11:20:08 +0200 Subject: [PATCH] nvme-fc: remove freeze/unfreeze around update_nr_hw_queues Remove the freeze/unfreeze around changes to the number of hardware queues. Study and retest has indicated there are no ios that can be active at this point so there is nothing to freeze. nvme-fc is draining the queues in the shutdown and error recovery path in __nvme_fc_abort_outstanding_ios. This patch primarily reverts 1edbf7e527c4 "nvme-fc: wait for queues to freeze before calling update_hr_hw_queues". It's not an exact revert as it leaves the adjusting of hw queues only if the count changes. Signed-off-by: James Smart [dwagner: added explanation why no IO is pending] Signed-off-by: Daniel Wagner Reviewed-by: Ming Lei Reviewed-by: Himanshu Madhani Reviewed-by: Hannes Reinecke Signed-off-by: Christoph Hellwig --- drivers/nvme/host/fc.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 6ebe68396712c..aa14ad963d910 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2957,9 +2957,7 @@ nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl) dev_info(ctrl->ctrl.device, "reconnect: revising io queue count from %d to %d\n", prior_ioq_cnt, nr_io_queues); - nvme_wait_freeze(&ctrl->ctrl); blk_mq_update_nr_hw_queues(&ctrl->tag_set, nr_io_queues); - nvme_unfreeze(&ctrl->ctrl); } ret = nvme_fc_create_hw_io_queues(ctrl, ctrl->ctrl.sqsize + 1); -- 2.39.5