scsi: cxlflash: Query write_zeroes limit for zeroing

The write_same and write_zeroes limits for SCSI are effectively the same,
so the current code works just fine.  But we plan to remove
REQ_OP_WRITE_SAME support, so switch to querying the write zeroes limit for
a zeroing WRITE SAME operation.

Link: https://lore.kernel.org/r/20220209082828.2629273-2-hch@lst.deReviewed-by: NChaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/cxlflash/vlun.c

@@ -430,8 +430,8 @@ static int write_same16(struct scsi_device *sdev,
 	struct device *dev = &cfg->dev->dev;
 	const u32 s = ilog2(sdev->sector_size) - 9;
 	const u32 to = sdev->request_queue->rq_timeout;
-	const u32 ws_limit = blk_queue_get_max_sectors(sdev->request_queue,
-						       REQ_OP_WRITE_SAME) >> s;
+	const u32 ws_limit =
+		sdev->request_queue->limits.max_write_zeroes_sectors >> s;
 
 	cmd_buf = kzalloc(CMD_BUFSIZE, GFP_KERNEL);
 	scsi_cmd = kzalloc(MAX_COMMAND_SIZE, GFP_KERNEL);