From: Daniel Wagner <dwagner@suse.de> To: linux-nvme@lists.infradead.org Cc: linux-kernel@vger.kernel.org, James Smart <james.smart@broadcom.com>, Keith Busch <kbusch@kernel.org>, Ming Lei <ming.lei@redhat.com>, Sagi Grimberg <sagi@grimberg.me>, Hannes Reinecke <hare@suse.de>, Wen Xiong <wenxiong@us.ibm.com>, Himanshu Madhani <himanshu.madhani@oracle.com>, Daniel Wagner <dwagner@suse.de>, James Smart <jsmart2021@gmail.com> Subject: [PATCH v5 1/3] nvme-fc: Wait with a timeout for queue to freeze Date: Wed, 18 Aug 2021 14:05:28 +0200 [thread overview] Message-ID: <20210818120530.130501-2-dwagner@suse.de> (raw) In-Reply-To: <20210818120530.130501-1-dwagner@suse.de> 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 7f462af1b02a..8e59e6d142c1 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2963,7 +2963,14 @@ 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); } -- 2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: Daniel Wagner <dwagner@suse.de> To: linux-nvme@lists.infradead.org Cc: linux-kernel@vger.kernel.org, James Smart <james.smart@broadcom.com>, Keith Busch <kbusch@kernel.org>, Ming Lei <ming.lei@redhat.com>, Sagi Grimberg <sagi@grimberg.me>, Hannes Reinecke <hare@suse.de>, Wen Xiong <wenxiong@us.ibm.com>, Himanshu Madhani <himanshu.madhani@oracle.com>, Daniel Wagner <dwagner@suse.de>, James Smart <jsmart2021@gmail.com> Subject: [PATCH v5 1/3] nvme-fc: Wait with a timeout for queue to freeze Date: Wed, 18 Aug 2021 14:05:28 +0200 [thread overview] Message-ID: <20210818120530.130501-2-dwagner@suse.de> (raw) In-Reply-To: <20210818120530.130501-1-dwagner@suse.de> 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 7f462af1b02a..8e59e6d142c1 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2963,7 +2963,14 @@ 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); } -- 2.29.2 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-08-18 12:06 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-18 12:05 [PATCH v5 0/3] Handle update hardware queues and queue freeze more carefully Daniel Wagner 2021-08-18 12:05 ` Daniel Wagner 2021-08-18 12:05 ` Daniel Wagner [this message] 2021-08-18 12:05 ` [PATCH v5 1/3] nvme-fc: Wait with a timeout for queue to freeze Daniel Wagner 2021-08-18 12:05 ` [PATCH v5 2/3] nvme-fc: avoid race between time out and tear down Daniel Wagner 2021-08-18 12:05 ` Daniel Wagner 2021-08-18 12:05 ` [PATCH v5 3/3] nvme-fc: fix controller reset hang during traffic Daniel Wagner 2021-08-18 12:05 ` Daniel Wagner 2021-08-18 12:21 ` Hannes Reinecke 2021-08-18 12:21 ` Hannes Reinecke 2021-08-20 8:48 ` [PATCH v5 0/3] Handle update hardware queues and queue freeze more carefully Daniel Wagner 2021-08-20 8:48 ` Daniel Wagner 2021-08-20 11:55 ` Daniel Wagner 2021-08-20 11:55 ` Daniel Wagner 2021-08-20 15:27 ` James Smart 2021-08-20 15:27 ` James Smart 2021-08-23 8:01 ` Christoph Hellwig 2021-08-23 8:01 ` Christoph Hellwig 2021-08-23 9:14 ` Daniel Wagner 2021-08-23 9:14 ` Daniel Wagner 2021-08-23 9:19 ` Christoph Hellwig 2021-08-23 9:19 ` Christoph Hellwig
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