From b2ee0bc180fb4206101b690c228631f37c465e34 Mon Sep 17 00:00:00 2001
From: Jim Harris <james.r.harris@intel.com>
Date: Mon, 25 Apr 2022 17:43:11 +0000
Subject: [PATCH] nvmf: make acwu 0-based based

ACWU is a 0's based value, and our intent is to
report that our target's ACWU is 1 block.  This means
we should report ACWU as 0, not 1.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I6ad0606be07fd38bc6c2e3a8e4bb78225b3dfadc
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12385
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
---
 lib/nvmf/ctrlr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/nvmf/ctrlr.c b/lib/nvmf/ctrlr.c
index 5e00af7a3..698ea6c00 100644
--- a/lib/nvmf/ctrlr.c
+++ b/lib/nvmf/ctrlr.c
@@ -2664,7 +2664,7 @@ spdk_nvmf_ctrlr_identify_ctrlr(struct spdk_nvmf_ctrlr *ctrlr, struct spdk_nvme_c
 	cdata->maxcmd = transport->opts.max_queue_depth;
 	cdata->sgls = ctrlr->cdata.sgls;
 	cdata->fuses.compare_and_write = 1;
-	cdata->acwu = 1;
+	cdata->acwu = 0; /* ACWU is 0-based. */
 	if (subsystem->flags.ana_reporting) {
 		cdata->mnan = subsystem->max_nsid;
 	}