Re: [PATCH v4 4/8] nvme-fc: Wait with a timeout for queue to freeze
From: Himanshu Madhani <hidden>
Date: 2021-08-02 19:36:47
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On 8/2/21 6:26 AM, Daniel Wagner wrote:
quoted hunk ↗ jump to hunk
Do not wait indifinitly for all queues to freeze. Instead use a timeout and abort the operation if we get stuck. Reviewed-by: James Smart <redacted> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Daniel Wagner <redacted> --- drivers/nvme/host/fc.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 8a903769364f..dbb8ad816df8 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c@@ -2955,7 +2955,14 @@ 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); + if (!nvme_wait_freeze_timeout(&ctrl->ctrl, NVME_IO_TIMEOUT)) { + /* + * If we timed out waiting for freeze we are likely to + * be stuck. Fail the controller initialization just + * to be safe. + */ + return -ENODEV; + } blk_mq_update_nr_hw_queues(&ctrl->tag_set, nr_io_queues); nvme_unfreeze(&ctrl->ctrl); }
Reviewed-by: Himanshu Madhani <redacted> -- Himanshu Madhani Oracle Linux Engineering _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme