diff mbox series

[v3,07/19] nvme: Don't hardcode the data len for pr commands

Message ID 20221026231945.6609-8-michael.christie@oracle.com
State New
Headers show
Series Use block pr_ops in LIO | expand

Commit Message

Mike Christie Oct. 26, 2022, 11:19 p.m. UTC 
Reservation Report support needs to pass in a variable sized buffer, so
this patch has the pr command helpers take a data length argument.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 drivers/nvme/host/core.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

Comments

Keith Busch Oct. 27, 2022, 5:05 p.m. UTC | #1 
On Wed, Oct 26, 2022 at 06:19:33PM -0500, Mike Christie wrote:
> Reservation Report support needs to pass in a variable sized buffer, so
> this patch has the pr command helpers take a data length argument.
> 
> Signed-off-by: Mike Christie <michael.christie@oracle.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>

Looks good.

Reviewed-by: Keith Busch <kbusch@kernel.org>
Chaitanya Kulkarni Nov. 1, 2022, 5:29 a.m. UTC | #2 
On 10/26/22 16:19, Mike Christie wrote:
> Reservation Report support needs to pass in a variable sized buffer, so
> this patch has the pr command helpers take a data length argument.
> 
> Signed-off-by: Mike Christie <michael.christie@oracle.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> ---


Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>

-ck
diff mbox series

Patch

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index dc4220600585..a79fa710d012 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2082,7 +2082,7 @@  static char nvme_pr_type(enum pr_type type)
 }
 
 static int nvme_send_ns_head_pr_command(struct block_device *bdev,
-		struct nvme_command *c, u8 data[16])
+		struct nvme_command *c, u8 *data, unsigned int data_len)
 {
 	struct nvme_ns_head *head = bdev->bd_disk->private_data;
 	int srcu_idx = srcu_read_lock(&head->srcu);
@@ -2091,17 +2091,17 @@  static int nvme_send_ns_head_pr_command(struct block_device *bdev,
 
 	if (ns) {
 		c->common.nsid = cpu_to_le32(ns->head->ns_id);
-		ret = nvme_submit_sync_cmd(ns->queue, c, data, 16);
+		ret = nvme_submit_sync_cmd(ns->queue, c, data, data_len);
 	}
 	srcu_read_unlock(&head->srcu, srcu_idx);
 	return ret;
 }
 	
 static int nvme_send_ns_pr_command(struct nvme_ns *ns, struct nvme_command *c,
-		u8 data[16])
+		u8 *data, unsigned int data_len)
 {
 	c->common.nsid = cpu_to_le32(ns->head->ns_id);
-	return nvme_submit_sync_cmd(ns->queue, c, data, 16);
+	return nvme_submit_sync_cmd(ns->queue, c, data, data_len);
 }
 
 static int nvme_pr_command(struct block_device *bdev, u32 cdw10,
@@ -2118,8 +2118,10 @@  static int nvme_pr_command(struct block_device *bdev, u32 cdw10,
 
 	if (IS_ENABLED(CONFIG_NVME_MULTIPATH) &&
 	    bdev->bd_disk->fops == &nvme_ns_head_ops)
-		return nvme_send_ns_head_pr_command(bdev, &c, data);
-	return nvme_send_ns_pr_command(bdev->bd_disk->private_data, &c, data);
+		return nvme_send_ns_head_pr_command(bdev, &c, data,
+						    sizeof(data));
+	return nvme_send_ns_pr_command(bdev->bd_disk->private_data, &c, data,
+				       sizeof(data));
 }
 
 static int nvme_pr_register(struct block_device *bdev, u64 old,