[PATCH 4/5] nvme: Increase the number of retries for zoned writes

From: Bart Van Assche <bvanassche@acm.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Khazhy Kumykov <khazhy@google.com>,
	Jaegeuk Kim <jaegeuk@kernel.org>,
	Bart Van Assche <bvanassche@acm.org>,
	Keith Busch <kbusch@kernel.org>, Sagi Grimberg <sagi@grimberg.me>,
	Chaitanya Kulkarni <kch@nvidia.com>
Subject: [PATCH 4/5] nvme: Increase the number of retries for zoned writes
Date: Tue, 14 Jun 2022 10:49:42 -0700	[thread overview]
Message-ID: <20220614174943.611369-5-bvanassche@acm.org> (raw)
In-Reply-To: <20220614174943.611369-1-bvanassche@acm.org>

Before removing zone locking, increase the number of retries for zoned
writes to the maximum number of outstanding commands.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Keith Busch <kbusch@kernel.org>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/nvme/host/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index fe0d09fc70ba..347a06118282 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -854,6 +854,10 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns,
 	if (req->cmd_flags & REQ_RAHEAD)
 		dsmgmt |= NVME_RW_DSM_FREQ_PREFETCH;
 
+	if (blk_rq_is_seq_write(req))
+		nvme_req(req)->max_retries += req->q->nr_hw_queues *
+			req->q->nr_requests;
+
 	cmnd->rw.opcode = op;
 	cmnd->rw.flags = 0;
 	cmnd->rw.nsid = cpu_to_le32(ns->head->ns_id);
