From 2e5d0baa04845dc3a3d7dfa33d7663de270bb146 Mon Sep 17 00:00:00 2001
From: Alexander Solganik <sashas@lightbitslabs.com>
Date: Wed, 21 Sep 2016 14:12:38 -0700
Subject: nvmet: Make dsm number of ranges zero based

This caused the nvmet request data length to be
incorrect.

Signed-off-by: Alexander Solganik <sashas@lightbitslabs.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/target/io-cmd.c b/drivers/nvme/target/io-cmd.c
index 4132b6b..4a96c20 100644
--- a/drivers/nvme/target/io-cmd.c
+++ b/drivers/nvme/target/io-cmd.c
@@ -206,7 +206,7 @@ int nvmet_parse_io_cmd(struct nvmet_req *req)
 		return 0;
 	case nvme_cmd_dsm:
 		req->execute = nvmet_execute_dsm;
-		req->data_len = le32_to_cpu(cmd->dsm.nr) *
+		req->data_len = le32_to_cpu(cmd->dsm.nr + 1) *
 			sizeof(struct nvme_dsm_range);
 		return 0;
 	default:
-- 
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