diff mbox series

[v4,10/18] nvme: Add helper to send pr command

Message ID 20230224174502.321490-11-michael.christie@oracle.com
State Superseded
Headers show
Series [v4,01/18] block: Add PR callouts for read keys and reservation | expand

Commit Message

Mike Christie Feb. 24, 2023, 5:44 p.m. UTC 
Move the code that checks for multipath support and sends the pr command
to a new helper so it can be used by the reservation report support added
in the next patches.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
---
 drivers/nvme/host/pr.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

Comments

Mike Christie March 6, 2023, 5:25 p.m. UTC | #1 
On 3/5/23 3:28 PM, Chaitanya Kulkarni wrote:
>>   
>> +static int nvme_send_pr_command(struct block_device *bdev,
>> +		struct nvme_command *c, void *data, unsigned int data_len)
>> +{
>> +	if (IS_ENABLED(CONFIG_NVME_MULTIPATH) &&
>> +	    bdev->bd_disk->fops == &nvme_ns_head_ops)
>> +		return nvme_send_ns_head_pr_command(bdev, c, data, data_len);
> below else is not needed after above return..


Will fix. Thanks.
Christoph Hellwig March 14, 2023, 5:13 p.m. UTC | #2 
Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

althought I'd also prefer to drop the redundant else.
diff mbox series

Patch

diff --git a/drivers/nvme/host/pr.c b/drivers/nvme/host/pr.c
index 26ad25f7280b..7a1d93da4970 100644
--- a/drivers/nvme/host/pr.c
+++ b/drivers/nvme/host/pr.c
@@ -27,7 +27,7 @@  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, unsigned int data_len)
+		struct nvme_command *c, void *data, unsigned int data_len)
 {
 	struct nvme_ns_head *head = bdev->bd_disk->private_data;
 	int srcu_idx = srcu_read_lock(&head->srcu);
@@ -43,7 +43,7 @@  static int nvme_send_ns_head_pr_command(struct block_device *bdev,
 }
 
 static int nvme_send_ns_pr_command(struct nvme_ns *ns, struct nvme_command *c,
-		u8 *data, unsigned int data_len)
+		void *data, unsigned int data_len)
 {
 	c->common.nsid = cpu_to_le32(ns->head->ns_id);
 	return nvme_submit_sync_cmd(ns->queue, c, data, data_len);
@@ -71,6 +71,17 @@  static int nvme_sc_to_pr_err(int nvme_sc)
 	}
 }
 
+static int nvme_send_pr_command(struct block_device *bdev,
+		struct nvme_command *c, void *data, unsigned int data_len)
+{
+	if (IS_ENABLED(CONFIG_NVME_MULTIPATH) &&
+	    bdev->bd_disk->fops == &nvme_ns_head_ops)
+		return nvme_send_ns_head_pr_command(bdev, c, data, data_len);
+	else
+		return nvme_send_ns_pr_command(bdev->bd_disk->private_data, c,
+					       data, data_len);
+}
+
 static int nvme_pr_command(struct block_device *bdev, u32 cdw10,
 				u64 key, u64 sa_key, u8 op)
 {
@@ -84,13 +95,7 @@  static int nvme_pr_command(struct block_device *bdev, u32 cdw10,
 	c.common.opcode = op;
 	c.common.cdw10 = cpu_to_le32(cdw10);
 
-	if (IS_ENABLED(CONFIG_NVME_MULTIPATH) &&
-	    bdev->bd_disk->fops == &nvme_ns_head_ops)
-		ret = nvme_send_ns_head_pr_command(bdev, &c, data,
-						   sizeof(data));
-	else
-		ret = nvme_send_ns_pr_command(bdev->bd_disk->private_data, &c,
-					      data, sizeof(data));
+	ret = nvme_send_pr_command(bdev, &c, data, sizeof(data));
 	if (ret < 0)
 		return ret;