Messages in this thread | | | Subject | Re: [PATCH v4 4/8] nvme-fc: Wait with a timeout for queue to freeze | From | Himanshu Madhani <> | Date | Mon, 2 Aug 2021 14:36:09 -0500 |
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On 8/2/21 6:26 AM, Daniel Wagner wrote: > 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 <jsmart2021@gmail.com> > Reviewed-by: Hannes Reinecke <hare@suse.de> > Signed-off-by: Daniel Wagner <dwagner@suse.de> > --- > 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 <himanshu.madhani@oracle.com>
-- Himanshu Madhani Oracle Linux Engineering
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