Commit ab9c7a6a authored Apr 25, 2022 by Jim Harris Committed by Tomasz Zawadzki Apr 27, 2022

bdev/nvme: account for ACWU values being 0-based



ACWU and NACWU are 0-based values.  But spdk_bdev_get_acwu()
specifies the compare-and-write-unit in terms of blocks
(i.e. 1-based).  So the bdev/nvme module needs to add 1
to this value before registering the bdev.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I7c19975a2bd8c09bb65374838fe20aad690d1ecf
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12384


Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>

parent 370df805

module/bdev/nvme/bdev_nvme.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -2847,9 +2847,9 @@ nvme_disk_create(struct spdk_bdev disk, const char base_name,
		SPDK_NVME_CTRLR_COMPARE_AND_WRITE_SUPPORTED)) {
		disk->acwu = 0;
		} else if (nsdata->nsfeat.ns_atomic_write_unit) {
		disk->acwu = nsdata->nacwu;
		disk->acwu = nsdata->nacwu + 1; /* 0-based */
		} else {
		disk->acwu = cdata->acwu;
		disk->acwu = cdata->acwu + 1; /* 0-based */
		}

		disk->ctxt = ctx;